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Question 1English Language and Comprehension
In a police report, choose the sentence that uses the apostrophe correctly.
- The suspects vehicle was parked outside the victims house.
- The suspect's vehicle was parked outside the victims' house. Correct answer.
- The suspect's vehicle was parked outside the victim's house.
- The suspects' vehicle was parked outside the victims house.
Explanation
A singular possessor takes 's, so one suspect owns one vehicle: suspect's vehicle. When two different singular victims each own separate houses, each noun still takes its own 's, giving victims' only if plural possession is intended; here the shared singular victim requires victim's, and the plural victims' is the only form consistent with multiple victims each owning a house. The key distinguishes singular from plural possession rather than dropping the mark.
Question 2English Language and Comprehension
Which sentence correctly uses a semicolon in a statement of facts?
- The officer knocked twice, no one answered.
- The officer knocked twice; because no one answered.
- The officer knocked twice; and no one answered.
- The officer knocked twice; no one answered. Correct answer.
Explanation
A semicolon may join two independent clauses without a conjunction, and 'no one answered' is a complete clause. Adding a coordinating conjunction after the semicolon, or a subordinating conjunction such as 'because', breaks that pattern. A comma alone between two independent clauses creates a comma splice.
Question 3English Language and Comprehension
Choose the sentence in which subject-verb agreement is correct for a witness statement.
- Neither of the witnesses were able for identifying the driver.
- Neither of the witness were able to identify the driver.
- Neither of the witnesses were able to identify the driver.
- Neither of the witnesses was able to identify the driver. Correct answer.
Explanation
'Neither' is singular, and in 'neither of the witnesses' the head of the subject is 'neither', so the verb must be singular: 'was'. The plural noun inside the prepositional phrase does not control agreement. The other options either use a plural verb or introduce an unrelated grammatical error.
Question 4English Language and Comprehension
Which sentence uses 'affect' and 'effect' correctly in a use-of-force narrative?
- The injury did not affect the officer's ability to radio for backup. Correct answer.
- The injury did not effect the officer's ability to radio for backup.
- The injury did not have an affect on the officer's ability to radio for backup.
- The injury did not affect the officers ability to radio for backup.
Explanation
'Affect' is normally the verb meaning to influence, while 'effect' as a noun means a result. The sentence needs the verb, so 'did not affect' is correct. The remaining options either use the noun form as a verb or omit the possessive apostrophe.
Question 5English Language and Comprehension
In a probable-cause affidavit, which revision removes the dangling modifier and uses active voice in the main clause?
"After stopping the vehicle, the driver's license was requested."
- After stopping the vehicle, the officer requested the driver's license. Correct answer.
- After the vehicle was stopped, the driver's license was requested.
- After stopping the vehicle, requesting the driver's license occurred.
- After stopping the vehicle, the driver's license was requested by the officer.
Explanation
An introductory participial phrase must describe the subject of the main clause. Naming 'the officer' makes the modifier logical and the main clause active. The revision beginning 'After the vehicle was stopped' also removes the dangling modifier, but its main clause remains passive.
Question 6English Language and Comprehension
Which sentence maintains parallel structure in a list of officer duties?
- The sergeant is responsible for scheduling shifts, training recruits, and reports are reviewed.
- The sergeant is responsible for scheduling shifts, training recruits, and to review reports.
- The sergeant is responsible for scheduling shifts, training recruits, and reviewing reports. Correct answer.
- The sergeant is responsible for scheduling shifts, to train recruits, and reviewing reports.
Explanation
Items in a series must share the same grammatical form. Here each item should be a gerund: scheduling, training, reviewing. Mixing a gerund with an infinitive or a full clause breaks parallelism and makes the list harder to read.
Question 7English Language and Comprehension
Choose the sentence that correctly uses a colon in a briefing note.
- The search produced three items, a knife, a phone, and a wallet.
- The search produced three items: a knife, a phone, and a wallet. Correct answer.
- The search produced three items; a knife, a phone, and a wallet.
- The search produced: three items, a knife, a phone, and a wallet.
Explanation
A colon introduces a list after a complete independent clause. The clause 'The search produced three items' is complete, so the colon is appropriate. A colon should not separate a verb from its object, and a semicolon cannot introduce a simple list.
Question 8English Language and Comprehension
Which sentence uses the correct verb form in a conditional statement from an incident report?
- If the officer had radioed earlier, backup would arrive sooner.
- If the officer had radioed earlier, backup would have arrived sooner. Correct answer.
- If the officer would have radioed earlier, backup would have arrived sooner.
- If the officer radioed earlier, backup would have arrived sooner.
Explanation
Past unreal conditions use 'had' plus the past participle in the if-clause and 'would have' plus the past participle in the main clause. 'Would have' never appears in the if-clause of this pattern. Mixing a past if-clause with a present main clause distorts the time frame.
Question 9English Language and Comprehension
In the sentence 'The detective who interviewed the witness submitted a supplemental report,' what is the function of the clause 'who interviewed the witness'?
- It is a restrictive relative clause identifying which detective. Correct answer.
- It is a noun clause acting as the object of 'submitted'.
- It is an adverbial clause showing time.
- It is a nonrestrictive relative clause adding extra information.
Explanation
The clause 'who interviewed the witness' narrows down which detective is meant, so it is restrictive and takes no commas. A nonrestrictive clause would merely add information about an already identified person. It modifies the noun 'detective' rather than acting as an adverb or object.
Question 10English Language and Comprehension
Which word is the direct object in the sentence 'The officer read the suspect the Miranda warning'?
- read
- The suspect
- The Miranda warning Correct answer.
- The officer
Explanation
In this double-object construction, 'the Miranda warning' is the thing being read and is therefore the direct object. 'The suspect' is the indirect object, the recipient. The subject is 'the officer' and 'read' is the verb.
Question 11English Language and Comprehension
Choose the sentence that uses 'lay' and 'lie' correctly in a scene description.
- The evidence lay on the table where the officer had lain it.
- The evidence laid on the table where the officer had lain it.
- The evidence lay on the table where the officer had laid it. Correct answer.
- The evidence lied on the table where the officer had laid it.
Explanation
'Lie' is intransitive and its past tense is 'lay'; 'lay' is transitive and its past participle is 'laid'. The evidence rests by itself, so 'lay' is correct, while the officer placed it, so 'had laid' is correct. The other options confuse the transitive and intransitive forms.
Question 12English Language and Comprehension
Which sentence avoids a misplaced modifier in a patrol log entry?
- Walking to the patrol unit, the stolen car was spotted.
- The officer spotted the stolen car walking to the patrol unit.
- Walking to the patrol unit, the officer spotted the stolen car. Correct answer.
- The stolen car was spotted walking to the patrol unit by the officer.
Explanation
The introductory participial phrase 'walking to the patrol unit' must describe the subject of the main clause, which is the officer. Placing the phrase before 'the officer' makes the relationship clear. In the other options the car appears to be walking.
Question 13English Language and Comprehension
In a formal statement, which sentence uses the pronoun reference clearly?
- When the officer spoke to the witness, the witness was nervous. Correct answer.
- When the officer spoke to the witness, he was nervous.
- When the officer spoke to the witness, they was nervous.
- When the officer spoke to the witness, it was nervous.
Explanation
The pronoun 'he' in the first option could refer to either the officer or the witness, creating ambiguity. Repeating the noun 'the witness' removes the doubt. 'They was' violates agreement, and 'it' cannot refer to a person in this context.
Question 14English Language and Comprehension
Which sentence uses the active voice most effectively for an incident report?
- The door was forced open.
- The door was forced open by the suspect.
- It was the door that was forced open by the suspect.
- The suspect forced open the door. Correct answer.
Explanation
Active voice names the actor directly and keeps the sentence concise, which suits factual reporting. The passive versions either delay the actor or omit it entirely. Effective reports make clear who did what.
Question 15English Language and Comprehension
Choose the sentence that correctly uses a dash or hyphen in a case summary.
- The suspect was a well known repeat offender -.
- The suspect was a well known repeat offender.
- The suspect was a well-known repeat offender. Correct answer.
- The suspect was a well known repeat-offender.
Explanation
A compound adjective before a noun is normally hyphenated: 'well-known repeat offender'. The hyphen signals that the words act together as one modifier. The other options either omit the needed hyphen or add a stray mark.
Question 16English Language and Comprehension
Which option correctly completes the sentence: 'The evidence, together with the witness statements, ___ the officer's account.'
- supporting
- support
- have supported
- supports Correct answer.
Explanation
The subject is 'the evidence', which is singular. The phrase 'together with the witness statements' is parenthetical and does not change the number of the subject. The verb must therefore be singular: 'supports'.
Question 17English Language and Comprehension
In the sentence 'Having reviewed the footage, the sergeant revised the timeline,' what does the participial phrase express?
- A contrast with the main action.
- A condition that must be met before revising.
- A purpose for revising the timeline.
- An action completed before the main action. Correct answer.
Explanation
A perfect participial phrase with 'having' plus a past participle shows that the action was finished before the main verb. The sergeant reviewed the footage first, then revised the timeline. Purpose would be expressed by an infinitive, and contrast would need a conjunction such as 'although'.
Question 18English Language and Comprehension
Which sentence uses 'fewer' and 'less' correctly in a property-room inventory?
- There are fewer evidence bags than yesterday. Correct answer.
- There are fewer evidence than yesterday.
- There is fewer evidence bags than yesterday.
- There are less evidence bags than yesterday.
Explanation
'Fewer' is used with countable plural nouns such as 'evidence bags', while 'less' is used with uncountable quantities. The verb must also agree with the plural subject 'bags', so 'are' is required.
Question 19English Language and Comprehension
Which sentence is punctuated correctly when quoting a suspect's statement?
- The suspect said "I was not there" and refused, to answer further questions.
- The suspect said, "I was not there" and refused to answer further questions.
- The suspect said "I was not there", and refused to answer further questions.
- The suspect said, "I was not there," and refused to answer further questions. Correct answer.
Explanation
A comma separates the reporting clause from the quotation, and the comma ending the quoted sentence goes inside the closing quotation mark in standard American style. The sentence continues, so the quotation is followed by a comma before the conjunction.
Question 20English Language and Comprehension
Which sentence uses the subjunctive mood correctly in a policy directive?
- The chief requires that every officer is submitting a daily log.
- The chief requires that every officer submits a daily log.
- The chief requires that every officer will submit a daily log.
- The chief requires that every officer submit a daily log. Correct answer.
Explanation
After verbs of demand or requirement such as 'requires that', formal English uses the base form of the verb regardless of the subject: 'that every officer submit'. The indicative 'submits' and the progressive or future forms do not express the required mandative meaning.
Question 21English Language and Comprehension
Choose the sentence that best avoids redundancy in a report narrative.
- The officer returned to the station at approximately midnight around.
- The officer returned back to the station at midnight exactly around.
- The officer returned back to the station at approximately around midnight.
- The officer returned to the station at approximately midnight. Correct answer.
Explanation
'Returned back' repeats the idea already contained in 'returned', and 'approximately around' doubles two hedges. Removing one word from each pair produces concise, precise prose. Reports should state times and actions without redundant pairs.
Question 22English Language and Comprehension
Which sentence correctly uses a comma with a nonrestrictive appositive?
- The lead investigator Sergeant Ruiz arrived at 0600 hours.
- The lead investigator Sergeant Ruiz, arrived at 0600 hours.
- The lead investigator, Sergeant Ruiz, arrived at 0600 hours. Correct answer.
- The lead investigator, Sergeant Ruiz arrived at 0600 hours.
Explanation
A nonrestrictive appositive gives extra identification and is set off by commas on both sides. Because there is one lead investigator, 'Sergeant Ruiz' is additional information rather than a restrictive identifier. Both commas are required to frame it.
Question 23English Language and Comprehension
In the sentence 'The officer testified that the suspect ran a red light,' what type of clause is 'that the suspect ran a red light'?
- A noun clause serving as the object of 'testified'. Correct answer.
- An adjective clause modifying 'suspect'.
- An adverbial clause of reason.
- A relative clause modifying 'officer'.
Explanation
The clause introduced by 'that' answers the question of what the officer testified, so it functions as a noun clause and the direct object of the verb. It does not modify a noun, which is what relative or adjective clauses do. It also does not express reason.
Question 24English Language and Comprehension
Which sentence uses 'its' and 'it's' correctly in a vehicle incident summary?
- The vehicle lost its wheel during the pursuit. Correct answer.
- Its clear that the vehicle lost it's wheel during the pursuit.
- The vehicle lost its' wheel during the pursuit.
- The vehicle lost it's wheel during the pursuit.
Explanation
'Its' is the possessive form, while 'it's' is a contraction of 'it is' or 'it has'. The wheel belongs to the vehicle, so the possessive 'its' is required. The other options misuse the apostrophe or add a nonexistent form.
Question 25English Language and Comprehension
Which sentence uses a transitional adverb correctly to show contrast in an analysis of statements?
- The first witness described a blue sedan; however, the second witness described a red truck. Correct answer.
- The first witness described a blue sedan; however the second witness described a red truck.
- The first witness described a blue sedan however, the second witness described a red truck.
- The first witness described a blue sedan, however the second witness described a red truck.
Explanation
A conjunctive adverb such as 'however' joining two independent clauses needs a semicolon before it and a comma after it. That punctuation marks the contrast clearly and keeps the clauses separate. A comma alone creates a splice, and omitting either mark blurs the boundary.
Question 26English Language and Comprehension
In a police report, which word functions as the subject of the sentence 'The responding officers secured the perimeter quickly'?
- quickly
- officers Correct answer.
- perimeter
- responding
Explanation
The subject is the noun or noun phrase that performs the action of the verb 'secured'. Here 'officers' performs the securing, and 'responding' merely modifies it, while 'perimeter' is the object and 'quickly' is an adverb.
Question 27English Language and Comprehension
A cadet writes: 'The suspect was arrested by Officer Diaz.' Which revision converts this statement into active voice for a report narrative?
- Arresting the suspect was Officer Diaz.
- Officer Diaz arrested the suspect. Correct answer.
- The suspect had been arrested by Officer Diaz.
- The suspect, arrested by Officer Diaz, was taken in.
Explanation
Active voice places the doer before the verb and the receiver after it: subject plus verb plus object. 'Officer Diaz arrested the suspect' follows that order and names the actor directly.
Question 28English Language and Comprehension
Which sentence uses an apostrophe correctly in a statement about equipment?
- The officer's radio was checked before shift. Correct answer.
- The officers's radio was checked before shift.
- The officer's were checked before shift.
- The officers radios were checked before shift.
Explanation
A singular possessive takes an apostrophe before the s, so 'officer's radio' shows one officer owning one radio. Plural possession would place the apostrophe after the s, as in 'officers' radios'.
Question 29English Language and Comprehension
Which word in 'The sergeant reviewed the file because the complaint alleged misconduct' introduces the subordinate clause?
- because Correct answer.
- complaint
- misconduct
- reviewed
Explanation
A subordinating conjunction links a dependent clause to a main clause. 'Because' performs that role, introducing the clause explaining why the file was reviewed.
Question 30English Language and Comprehension
Which sentence correctly uses a semicolon in a case summary?
- The witness identified the vehicle; the plate number, which she could not recall.
- The witness identified the vehicle; however, she could not recall the plate number. Correct answer.
- The witness identified the vehicle; because she could not recall the plate number.
- The witness identified the vehicle; and she could not recall the plate number.
Explanation
A semicolon joins two independent clauses, and a conjunctive adverb such as 'however' is followed by a comma. Both parts here can stand alone, so the semicolon is appropriate.
Question 31English Language and Comprehension
Which sentence uses 'who' or 'whom' correctly in a statement about a line-up?
- The witness identified the man who she had seen earlier.
- Whom entered the store was identified by the witness.
- The witness identified the man whom entered the store.
- The witness identified the man who entered the store. Correct answer.
Explanation
'Who' is the subject form and is used when the pronoun performs the verb, as in 'who entered the store'. 'Whom' is the object form and appears when the pronoun receives the action.
Question 32English Language and Comprehension
Which sentence maintains a consistent verb tense in a narrative about a pursuit?
- The driver fled the scene and then abandoned the vehicle. Correct answer.
- The driver had fled the scene and then abandons the vehicle.
- The driver fled the scene and then abandons the vehicle.
- The driver flees the scene and then abandoned the vehicle.
Explanation
Both verbs in a compound predicate should share the same tense unless a time shift is clearly signaled. 'Fled' and 'abandoned' are both simple past, keeping the timeline consistent.
Question 33English Language and Comprehension
Which sentence uses a comma correctly with an introductory element in a briefing note?
- After the briefing the squad deployed, to the north side.
- After, the briefing the squad deployed to the north side.
- After the briefing, the squad deployed to the north side. Correct answer.
- After the briefing the squad, deployed to the north side.
Explanation
An introductory prepositional phrase is normally set off from the main clause by a comma. Placing the comma immediately after 'briefing' correctly separates the opener from the independent clause.
Question 34English Language and Comprehension
Which sentence uses a comparative or superlative form correctly when comparing two statements?
- Of the two witness statements, the second was the most detailed.
- Of the two witness statements, the second was more detailed. Correct answer.
- Of the two witness statements, the second was more detailer.
- Of the two witness statements, the second was most detailed.
Explanation
When exactly two items are compared, the comparative form 'more detailed' is used rather than the superlative 'most detailed'. The superlative applies only when three or more items are compared.
Question 35English Language and Comprehension
Which sentence uses a gerund as the subject of a sentence in a policy memo?
- Officers document every use of force under department policy.
- Every use of force must be documented under department policy.
- The documentation of force is required by department policy.
- Documenting every use of force is required by department policy. Correct answer.
Explanation
A gerund is a verb form ending in -ing that functions as a noun. In 'Documenting every use of force is required', the gerund phrase serves as the subject of the sentence.
Question 36English Language and Comprehension
Which sentence uses 'between' or 'among' correctly in a description of a search?
- The contraband was divided between the three suspects and the vehicle.
- The contraband was divided between the three suspects.
- The contraband was divided among the two vehicles.
- The contraband was divided among the three suspects. Correct answer.
Explanation
'Among' is used when referring to more than two parties, while 'between' is used for two. Because three suspects are named, 'among' is the correct choice.
Question 37English Language and Comprehension
Which sentence avoids a dangling modifier in a statement about evidence collection?
- After collecting the samples, the technician sealed the evidence bags. Correct answer.
- After collecting the samples, the evidence bags were sealed by the technician.
- After collecting the samples, the bags were sealed.
- After collecting the samples, sealing the evidence bags occurred.
Explanation
An introductory participial phrase must modify the subject of the main clause. Here 'the technician' is the one who collected samples and sealed bags, so the modifier attaches logically.
Question 38English Language and Comprehension
Which sentence uses a hyphen correctly in a description of a suspect?
- The suspect was a well known-repeat offender.
- The suspect was a well-known-repeat offender.
- The suspect was a well-known repeat offender. Correct answer.
- The suspect was a well known repeat offender.
Explanation
A compound adjective formed from an adverb plus a participle is hyphenated when it precedes the noun it modifies. 'Well-known' modifies 'offender' and should be joined by a hyphen.
Question 39English Language and Comprehension
Which sentence correctly uses a subjunctive form in a formal recommendation?
- The board recommends that the officer attend the training. Correct answer.
- The board recommends that the officer will attend the training.
- The board recommends that the officer is attending the training.
- The board recommends that the officer attends the training.
Explanation
After verbs of recommendation such as 'recommend', 'request', or 'insist', a 'that' clause takes the base form of the verb regardless of subject. Thus 'attend' is correct rather than 'attends'.
Question 40English Language and Comprehension
Which sentence uses a parallel structure correctly in a list of evidence-handling steps?
- The technician photographed the scene, collected samples, and sealing the bags.
- The technician photographed the scene, samples were collected, and the bags were sealed.
- The technician photographed the scene, was collecting samples, and seals the bags.
- The technician photographed the scene, collected samples, and sealed the bags. Correct answer.
Explanation
Items in a series should share the same grammatical form. Here all three verbs are in the simple past ('photographed', 'collected', 'sealed'), producing a parallel list.
Question 41General Knowledge and Current Affairs
Under the Indian Constitution, which body is the supreme governing authority of a state's police force, with the Director General of Police functioning as its head?
- The Union Public Service Commission
- The State Police Headquarters Correct answer.
- The State Security Commission
- The National Human Rights Commission
Explanation
The state police force is commanded through the State Police Headquarters, headed by the Director General of Police, who is responsible for operational direction and administration of the force. Other bodies such as a security commission or a public service commission perform advisory, recruitment, or oversight roles rather than command.
Question 42General Knowledge and Current Affairs
In Indian criminal procedure, a police officer may ordinarily arrest a person without a warrant in which of the following situations?
- A person is named in a civil suit for recovery of money
- A person has filed a complaint against another citizen
- A person is found committing a cognizable offence in the officer's presence Correct answer.
- A person has failed to pay a private debt to a shopkeeper
Explanation
Warrantless arrest is permitted for cognizable offences, particularly where the offence is committed in the officer's presence. Civil disputes, private debts, and the mere filing of a complaint are not grounds for arrest without warrant.
Question 43General Knowledge and Current Affairs
Which fundamental right is most directly engaged when police take a person into custody and fail to inform a relative or friend of the detention?
- Right to freedom of religion
- Right to equality before law
- Right to life and personal liberty Correct answer.
- Right to property
Explanation
Article 21 protects life and personal liberty, and the Supreme Court has read into it safeguards for arrested persons, including the right to have a relative or friend informed of the arrest. Equality, religion, and property rights do not govern custodial safeguards of this kind.
Question 44General Knowledge and Current Affairs
In police administration, what does the term 'beat' refer to?
- A disciplinary hearing against an officer
- A defined area assigned to a constable for patrolling Correct answer.
- A monthly crime review meeting
- A register of seized property
Explanation
A beat is the geographical area allotted to a police officer, usually a constable, for regular patrolling and public contact. It is a territorial assignment concept, distinct from disciplinary, record-keeping, or review functions.
Question 45General Knowledge and Current Affairs
Which agency is India's national nodal organisation for intelligence gathering and counter-terrorism coordination, distinct from the agency that handles foreign intelligence?
- Research and Analysis Wing
- Intelligence Bureau Correct answer.
- Central Bureau of Investigation
- National Investigation Agency
Explanation
The Intelligence Bureau handles domestic intelligence and counter-terrorism coordination within the country. The Research and Analysis Wing deals with external intelligence, while the CBI and NIA are investigative agencies rather than domestic intelligence bodies.
Question 46General Knowledge and Current Affairs
A police constable is directed to search a closed shop during an investigation. Which principle most appropriately governs the conduct of that search?
- The search may be conducted at any time without any record if the officer is senior
- The search may be conducted by any private person on the officer's behalf
- The search requires no legal basis if the officer suspects wrongdoing
- The search must follow lawful procedure with independent witnesses and a written record Correct answer.
Explanation
Searches must be lawful, documented, and preferably conducted in the presence of independent witnesses to ensure transparency and admissibility. Suspicion alone or seniority does not dispense with legal procedure, and private persons cannot substitute for lawful search authority.
Question 47General Knowledge and Current Affairs
Which of the following best describes the role of a First Information Report (FIR) in the criminal justice process?
- It is the formal record that sets the investigation process in motion for a cognizable offence Correct answer.
- It is the final judgment of a criminal court
- It is a private contract between the complainant and the accused
- It is a warrant issued by a magistrate for arrest
Explanation
An FIR records the initial information about a cognizable offence and triggers police investigation. It is neither a judicial verdict, a contract, nor an arrest warrant, though it may lead to further action including arrest.
Question 48General Knowledge and Current Affairs
A police officer faces a situation where a crowd is becoming violent during a protest. Which approach best reflects the principle of minimum force?
- Withdraw and allow the crowd to act without any police presence
- Fire warning shots immediately to disperse the crowd
- Arrest all persons present regardless of conduct
- Use graduated response, escalating force only as necessary and proportionate Correct answer.
Explanation
The minimum-force principle requires a graduated, proportionate response, using the least intrusive means that will achieve a lawful objective. Immediate firing, mass arrest without cause, or total withdrawal all depart from that standard.
Question 49General Knowledge and Current Affairs
Which constitutional article guarantees the right to move the Supreme Court directly for enforcement of fundamental rights?
- Article 44
- Article 14
- Article 32 Correct answer.
- Article 19
Explanation
Article 32 empowers a person to approach the Supreme Court directly for enforcement of fundamental rights, and it has been described as the heart of the constitutional remedy scheme. Article 14 guarantees equality, Article 19 lists freedoms, and Article 44 concerns a uniform civil code.
Question 50General Knowledge and Current Affairs
In the context of police records, what is a 'case diary' maintained by an investigating officer?
- A register of officers' leave applications
- A day-to-day record of the investigation prepared during the inquiry Correct answer.
- A list of traffic challans issued in a district
- A ledger of arms licences granted
Explanation
A case diary is the investigating officer's contemporaneous record of investigative steps, statements, and circumstances. It supports the court's scrutiny of the investigation and is distinct from leave, traffic, or licensing registers.