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JSSC Excise Constable study materials
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JSSC Excise Constable practice questions

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Question 1General Knowledge and Current Affairs

The Jharkhand State Sports Promotion Society runs the state's excise constable recruitment. Which body conducts the written examination for this post?

  1. Jharkhand Academic Council
  2. Jharkhand Public Service Commission
  3. Jharkhand State Police Board
  4. Jharkhand Staff Selection Commission Correct answer.

Explanation

The Jharkhand Staff Selection Commission (JSSC) is the state body that advertises and conducts combined competitive recruitment examinations, including the Excise Constable post, while the Excise Department supplies the vacancies and eligibility conditions. JPSC handles civil service level posts, not constable recruitment.

Question 2General Knowledge and Current Affairs

Excise constables in Jharkhand primarily assist in enforcing which law?

  1. The Motor Vehicles Act
  2. The Jharkhand Excise Act and related liquor control rules Correct answer.
  3. The Forest Conservation Act
  4. The Factories Act

Explanation

Excise staff enforce the state excise law, which governs manufacture, transport, sale and possession of liquor and intoxicants, along with allied rules on licences and prohibition. The other statutes fall under forest, transport and labour departments respectively.

Question 3General Knowledge and Current Affairs

Which river forms part of the northern boundary between Jharkhand and Bihar?

  1. The Subarnarekha
  2. The Ganga Correct answer.
  3. The Damodar
  4. The North Koel

Explanation

The Ganga flows along the northern edge of Jharkhand's Sahibganj district and separates it from Bihar. The Subarnarekha and North Koel rise within Jharkhand and flow east or south, while the Damodar runs mainly through the Chota Nagpur plateau.

Question 4General Knowledge and Current Affairs

Which city is the capital of Jharkhand?

  1. Jamshedpur
  2. Bokaro
  3. Ranchi Correct answer.
  4. Dhanbad

Explanation

Ranchi became the capital when Jharkhand was carved out of Bihar on 15 November 2000. Jamshedpur, Dhanbad and Bokaro are major industrial cities but not administrative capitals.

Question 5General Knowledge and Current Affairs

The Tropic of Cancer passes through which Indian state among the following?

  1. Kerala
  2. Punjab
  3. Sikkim
  4. Jharkhand Correct answer.

Explanation

The Tropic of Cancer crosses Jharkhand near Ranchi and also passes through Gujarat, Rajasthan, Madhya Pradesh, Chhattisgarh, West Bengal, Tripura and Mizoram. Kerala, Punjab and Sikkim lie entirely outside this latitude.

Question 6General Knowledge and Current Affairs

Who is the constitutional head of a state government in India?

  1. The Speaker of the Assembly
  2. The Chief Secretary
  3. The Governor Correct answer.
  4. The Chief Minister

Explanation

The Governor is appointed by the President and is the constitutional head of the state, while the Chief Minister heads the elected council of ministers that exercises real executive power. The Chief Secretary is a senior civil servant and the Speaker presides over the legislative assembly.

Question 7General Knowledge and Current Affairs

Which fundamental right was described by Dr B R Ambedkar as the heart and soul of the Constitution?

  1. Right against Exploitation
  2. Right to Equality
  3. Right to Constitutional Remedies Correct answer.
  4. Right to Freedom of Religion

Explanation

Article 32, the right to move the Supreme Court for enforcement of fundamental rights, was called the heart and soul of the Constitution by Ambedkar because it makes the other rights enforceable. The other rights are substantive guarantees but depend on this remedial power.

Question 8General Knowledge and Current Affairs

Which of these is a Kharif crop commonly grown in Jharkhand?

  1. Rice Correct answer.
  2. Mustard
  3. Wheat
  4. Barley

Explanation

Kharif crops are sown with the monsoon rains in June-July and harvested in autumn; rice is the leading Kharif crop of Jharkhand. Wheat, mustard and barley are Rabi crops sown in winter.

Question 9General Knowledge and Current Affairs

A person in Jharkhand is found transporting liquor bottles without a valid permit. Under excise procedure, the constable's immediate duty is to do which of the following?

  1. Seize the contraband, prepare a seizure memo and report to the supervising excise officer Correct answer.
  2. Hand the matter to the local municipal council
  3. Destroy the bottles immediately without any record
  4. Return the bottles after collecting a small fine on the spot

Explanation

Excise enforcement requires lawful seizure, documented in a seizure memo or list prepared in the presence of witnesses, followed by report to the competent excise officer who decides prosecution. Spot fines and undocumented destruction would destroy evidence and violate procedure.

Question 10General Knowledge and Current Affairs

Which of the following best explains why excise duty on liquor is important for Jharkhand's finances?

  1. It is a major own-source revenue for the state, funding welfare and infrastructure Correct answer.
  2. It replaces all other state taxes on goods
  3. It is levied only on imported foreign liquor
  4. It is collected by the Union government and not shared with states

Explanation

Excise duty on liquor is one of the largest own-tax revenues for states such as Jharkhand because alcohol is outside the GST framework and states retain taxing power over it. The revenue supports welfare schemes, roads and schools.

Question 11General Knowledge and Current Affairs

The Damodar Valley Corporation was modelled on which foreign authority?

  1. The Tennessee Valley Authority of the United States Correct answer.
  2. The Thames Water Board of England
  3. The Rhine Commission of Europe
  4. The Aswan Dam Authority of Egypt

Explanation

DVC, set up in 1948, was inspired by the Tennessee Valley Authority and was India's first multipurpose river valley project, combining flood control, irrigation, power and navigation in the Damodar basin. The other bodies are unrelated water management institutions.

Question 12General Knowledge and Current Affairs

Which Jharkhand district is home to the Betla National Park?

  1. Latehar Correct answer.
  2. Koderma
  3. East Singhbhum
  4. Godda

Explanation

Betla National Park lies in the Palamu region of Latehar district and was among India's early tiger reserves. East Singhbhum hosts Dalma sanctuary, while Godda and Koderma have no national park of this name.

Question 13General Knowledge and Current Affairs

The 73rd Constitutional Amendment Act of 1992 deals with which level of government?

  1. The Union executive
  2. Urban local bodies such as municipal corporations
  3. Rural local bodies such as panchayats Correct answer.
  4. The state judiciary

Explanation

The 73rd Amendment added Part IX and the Eleventh Schedule to the Constitution, giving constitutional status to panchayati raj institutions. The 74th Amendment dealt with urban local bodies, and neither touched the Union executive or the judiciary.

Question 14General Knowledge and Current Affairs

Which of the following minerals is Jharkhand best known for producing on a large scale?

  1. Coal Correct answer.
  2. Gold
  3. Petroleum
  4. Bauxite only

Explanation

Jharkhand holds major coal reserves in the Damodar and Rajmahal coalfields and is among India's leading coal producers. Petroleum is not produced here in commercial quantity, bauxite is mined but is not the state's defining mineral, and gold output is negligible.

Question 15General Knowledge and Current Affairs

In the Indian Constitution, 'protection of life and personal liberty' is guaranteed by which article?

  1. Article 25
  2. Article 19
  3. Article 14
  4. Article 21 Correct answer.

Explanation

Article 21 states that no person shall be deprived of life or personal liberty except according to procedure established by law, and courts have read many rights into it. Article 19 covers freedoms of speech and movement, Article 14 equality, and Article 25 religion.

Question 16General Knowledge and Current Affairs

Which of these personalities is associated with the tribal uprisings of the Chota Nagpur region against British rule?

  1. Birsa Munda Correct answer.
  2. Kunwar Singh
  3. Tantia Tope
  4. Mangal Pandey

Explanation

Birsa Munda led the Ulgulan movement among the Mundas of Chota Nagpur against land alienation and British rule, and is commemorated across Jharkhand. Tantia Tope and Kunwar Singh were leaders of the 1857 revolt in other regions, and Mangal Pandey was a sepoy at Barrackpore.

Question 17General Knowledge and Current Affairs

An excise constable notices that a licensed shop is selling liquor beyond permitted hours. Which action fits the legal framework best?

  1. Record the violation in writing and report it to the licensing authority for action Correct answer.
  2. Confiscate the shop's entire stock permanently on the spot
  3. Collect the day's sales proceeds as penalty
  4. Ignore it because the shop holds a licence

Explanation

Licence conditions fix permitted hours, and breach is a matter for the licensing or excise authority, which may suspend or cancel the licence and impose penalties after inquiry. The constable's role is to document and report, not to impose penalties or seize stock permanently without authority.

Question 18General Knowledge and Current Affairs

The Santhal Pargana division of Jharkhand lies mainly in which part of the state?

  1. Far western
  2. Central
  3. North-eastern Correct answer.
  4. South-western

Explanation

The Santhal Pargana division comprises Dumka, Deoghar, Godda, Pakur, Sahibganj and Jamtara in Jharkhand's north-eastern belt bordering Bihar and West Bengal. It is not the central or south-western plateau region.

Question 19General Knowledge and Current Affairs

Which article of the Constitution provides for the appointment of a Governor for each state?

  1. Article 153 Correct answer.
  2. Article 163
  3. Article 155
  4. Article 161

Explanation

Article 153 provides that there shall be a Governor for each state, and Article 155 states that the Governor is appointed by the President. Article 161 covers pardoning power and Article 163 the council of ministers advising the Governor.

Question 20General Knowledge and Current Affairs

Jharkhand's economy is often described as mineral-rich but employment-light. Which reasoning best supports this description?

  1. Agriculture employs nobody in the state
  2. Mining and heavy industry are capital-intensive and absorb relatively few workers per unit of output Correct answer.
  3. All minerals are exported unprocessed without any local employment
  4. The state has no mineral reserves at all

Explanation

Capital-intensive mining, steel and power plants generate large output but fewer jobs per rupee invested than labour-intensive manufacturing or services, so growth in these sectors may not translate into proportional employment. The other statements are factually false exaggerations.

Question 21General Knowledge and Current Affairs

A constable seizes illicit liquor from a vehicle. Which sequence best protects the case during trial?

  1. Send the bottles to the police station without any list or seal
  2. Keep the bottles in the vehicle until the trial begins
  3. Hand the bottles to the driver for safe custody
  4. Prepare a seizure list with witnesses, seal and label samples, and deposit them with the authorised excise store Correct answer.

Explanation

Chain of custody is central to excise prosecutions: a contemporaneous seizure list signed by independent witnesses, proper sealing and labelling, and deposit in an authorised store make the sample admissible and prevent tampering allegations. Loose handling weakens the prosecution.

Question 22General Knowledge and Current Affairs

Which statement about the Sixth Schedule of the Constitution is accurate in the Jharkhand context?

  1. It abolishes all panchayats in tribal areas
  2. It applies automatically to the whole of Jharkhand
  3. It provides autonomous district and regional councils for certain tribal areas, and Jharkhand has sought its extension to tribal belts Correct answer.
  4. It deals only with Union territories

Explanation

The Sixth Schedule currently covers tribal areas of Assam, Meghalaya, Tripura and Mizoram through autonomous councils, and there have been demands to extend similar provisions to Jharkhand's tribal regions. It does not apply automatically statewide, nor does it abolish panchayats.

Question 23General Knowledge and Current Affairs

Which pair correctly matches a Jharkhand city with its principal industrial identity?

  1. Ranchi - coal mining
  2. Bokaro - mica mining
  3. Dhanbad - automobile manufacturing
  4. Jamshedpur - iron and steel Correct answer.

Explanation

Jamshedpur hosts Tata Steel and is identified with iron and steel production. Bokaro is a steel town, Dhanbad is the coal capital, and Ranchi is an administrative and educational centre.

Question 24General Knowledge and Current Affairs

Consider a scenario where a constable is offered money by a shopkeeper to overlook a stock shortage. Which principle of public conduct should guide the constable?

  1. Integrity and impartial enforcement of the excise law regardless of inducement Correct answer.
  2. Deference to whoever holds the shop licence
  3. Loyalty to the local trader community
  4. Discretion to accept gifts if the amount is small

Explanation

Civil servants and police personnel are bound by conduct rules that prohibit accepting gratification and require impartial enforcement of the law. Accepting even a small gift in return for official forbearance is misconduct and may amount to a criminal offence.

Question 25General Knowledge and Current Affairs

Which of the following best describes the significance of the Chotanagpur Tenancy Act of 1908 for Jharkhand?

  1. It nationalised all forests in India
  2. It created the state of Jharkhand
  3. It abolished the zamindari system across India
  4. It restricted transfer of tribal land to non-tribals to protect customary land rights Correct answer.

Explanation

The Chotanagpur Tenancy Act regulated land transfers in the Chota Nagpur region and restricted alienation of tribal land to non-tribals, a protection still invoked today. Zamindari abolition came through post-independence laws, statehood came in 2000, and forest nationalisation was a different legal process.

Question 26General Knowledge and Current Affairs

Which body in Jharkhand is responsible for preparing and presenting the state budget in the Legislative Assembly?

  1. The Governor's Secretariat
  2. The State Finance Department headed by the Finance Minister Correct answer.
  3. The Jharkhand Public Service Commission
  4. The Accountant General of Jharkhand

Explanation

Under the parliamentary system adopted in the states, the Finance Department prepares the annual financial statement and the Finance Minister presents it in the Vidhan Sabha. The Governor causes it to be laid before the House under Article 202, but does not prepare it.

Question 27General Knowledge and Current Affairs

The Tana Bhagat movement of the early twentieth century in Chota Nagpur is best remembered for which characteristic?

  1. Organising industrial workers in the coal mines of Dhanbad
  2. Campaigning for a separate Muslim-majority province in eastern India
  3. Demanding abolition of the zamindari system through armed insurrection
  4. Combining tribal religious reform with non-violent resistance and later links to Gandhian nationalism Correct answer.

Explanation

The Tana Bhagats, led by figures such as Jatra Bhagat, blended a reformist tribal faith with refusal to pay rent and taxes, and they later identified with Gandhi's non-cooperation movement. Their method was largely non-violent rather than an armed uprising.

Question 28General Knowledge and Current Affairs

In India, which authority conducts elections to the Lok Sabha and to the state legislative assemblies?

  1. The NITI Aayog
  2. The Supreme Court of India
  3. The Election Commission of India Correct answer.
  4. The Ministry of Home Affairs

Explanation

Article 324 vests the superintendence, direction and control of elections to Parliament and state legislatures in the Election Commission of India. It is a constitutional body independent of the executive.

Question 29General Knowledge and Current Affairs

Which Jharkhand town is known as a major centre of the Indian steel industry and hosts a plant of the Steel Authority of India?

  1. Hazaribagh
  2. Bokaro Steel City Correct answer.
  3. Chaibasa
  4. Deoghar

Explanation

Bokaro Steel City houses the Bokaro Steel Plant, one of SAIL's integrated steel plants, and is among India's principal steel-producing centres. The other towns named are administrative or pilgrimage centres without integrated steel plants.

Question 30General Knowledge and Current Affairs

A constable learns that a licensed country-liquor shop has been receiving supplies from a distillery whose licence has expired. Which action is most consistent with excise enforcement procedure?

  1. Advise the shopkeeper to sell the stock quickly before inspection
  2. Seize the stock, record the facts in writing and report to the supervising excise officer for further action Correct answer.
  3. Collect a cash penalty from the shopkeeper on the spot and close the matter
  4. Ignore the matter because the shop's own licence is still valid

Explanation

Excise law makes possession of duty-paid liquor from an unauthorised source an offence, so the constable must document the seizure and place the case before the competent excise authority. Field staff cannot compound offences or impose penalties themselves.

Question 31General Knowledge and Current Affairs

Which of the following is the correct description of the role of the Comptroller and Auditor General in relation to state finances?

  1. It approves the state budget before presentation
  2. It audits the accounts of the state and reports to the legislature Correct answer.
  3. It disburses salaries to state government employees
  4. It fixes the rates of state taxes each year

Explanation

The CAG audits receipts and expenditure of the Union and the states and submits audit reports that are placed before the legislature. The reports inform legislative scrutiny but do not replace the legislature's own financial control.

Question 32General Knowledge and Current Affairs

Which feature of Jharkhand's demography makes the state notable among Indian states?

  1. It has the lowest literacy rate in the country
  2. It has the highest population density among all Indian states
  3. It has no urban population according to the census
  4. It has one of the largest shares of Scheduled Tribe population among major states Correct answer.

Explanation

Jharkhand's population includes a substantial Scheduled Tribe component, one of the largest shares among Indian states, reflecting its tribal heritage in the Chota Nagpur plateau. The state is not the most densely populated, does have significant urban centres, and its literacy rate is not the lowest.

Question 33General Knowledge and Current Affairs

A constable on night patrol finds a sealed godown that is not listed in the excise records but contains crates bearing excise labels. Which first step best protects the integrity of the case?

  1. Secure the premises, prepare a seizure memo with witnesses and inform the excise officer Correct answer.
  2. Return the crates to the nearest licensed shop without recording anything
  3. Break open the crates to count the bottles before doing anything else
  4. Ask the owner to remove the stock before the morning inspection

Explanation

Securing the scene and preparing a contemporaneous seizure memo with independent witnesses preserves the chain of custody and evidentiary value. Unrecorded handling or removal of goods destroys the case.

Question 34General Knowledge and Current Affairs

Which statement about the Panchayati Raj system in Jharkhand is accurate?

  1. Elections to panchayats are conducted under the supervision of the State Election Commission Correct answer.
  2. Panchayats have no role in implementing welfare schemes
  3. Panchayats function only in urban municipal areas
  4. The Governor directly appoints all panchayat members

Explanation

Under Article 243K, the superintendence, direction and control of panchayat elections vest in a State Election Commission. Panchayats are rural local bodies that also help implement welfare schemes at the grassroots.

Question 35General Knowledge and Current Affairs

The Damodar is significant to Jharkhand's industrial belt mainly because it

  1. forms the state's boundary with Nepal
  2. dries up completely during the monsoon season
  3. supports a chain of dams and reservoirs supplying water and power to the coal and industrial region Correct answer.
  4. is the state's only navigable river for large cargo ships

Explanation

The Damodar Valley project created a series of dams and reservoirs that provide water, flood control and hydro-electric power to the coal and industrial belt of Jharkhand and West Bengal. The river does not border Nepal and is not used by large cargo vessels.

Question 36General Knowledge and Current Affairs

Which of the following is the correct constitutional provision regarding the official language of Jharkhand?

  1. Each district may choose its own official language independently
  2. Hindi is the official language of the state as provided by the state legislature Correct answer.
  3. The Union Parliament decides the official language of every state
  4. Only English may be used for all state government business

Explanation

A state legislature may adopt one or more languages used in the state as its official language, and Jharkhand has adopted Hindi for official purposes. Districts cannot independently fix official languages, and the Union does not decide this for states.

Question 37General Knowledge and Current Affairs

A constable is asked by a local trader to help move a consignment of molasses-based liquor past a check post without duty payment. Which response is legally and ethically correct?

  1. Agree but keep the transaction off the official record
  2. Decline but warn the trader in advance about the check-post schedule
  3. Decline, report the request to superiors and ensure the consignment is checked as per rules Correct answer.
  4. Agree, provided the trader pays the duty later in instalments

Explanation

Excise evasion is a criminal offence, and a public servant who assists it commits misconduct as well as abets the offence. The correct course is refusal, reporting the approach, and applying normal checking procedure.

Question 38General Knowledge and Current Affairs

Which statement best explains why Jharkhand receives substantial central transfers despite being mineral-rich?

  1. Mineral wealth is taxed only by local bodies, leaving the state with no revenue
  2. The state's own tax base is modest relative to its population and development needs, so Finance Commission devolution and centrally sponsored schemes matter greatly Correct answer.
  3. The Constitution bars mineral-rich states from levying any taxes
  4. Jharkhand has refused all central assistance since its creation

Explanation

Although Jharkhand holds large mineral reserves, royalties and mining-related revenue are limited compared with the state's development needs, so central devolution and grants form an important part of its finances. Mineral taxation is not reserved to local bodies, and no constitutional bar of the kind described exists.

Question 39General Knowledge and Current Affairs

Which of the following correctly pairs a Jharkhand place with its well-known association?

  1. Rajmahal - iron-ore mining centre
  2. Dhanbad - principal tea-growing district
  3. Netarhat - major seaport
  4. Jamshedpur - Tata Steel plant Correct answer.

Explanation

Jamshedpur grew around the Tata Iron and Steel Company plant established in 1907 and remains a steel city. Netarhat is a hill station, Rajmahal is a historic town on the Ganga, and Dhanbad is associated with coal rather than tea.

Question 40General Knowledge and Current Affairs

A constable is offered a bribe to under-report the closing stock of a liquor shop. Which principle of public service does accepting the money most directly violate?

  1. The principle of seniority-based promotion
  2. The principle of maximum revenue collection by any means
  3. The principle of local language preference in office work
  4. The principle of integrity and impartial discharge of public duty Correct answer.

Explanation

A public servant is expected to act with honesty and impartiality, and accepting a bribe to falsify records breaches both the criminal law on corruption and the conduct rules. Revenue maximisation, seniority and language preference are unrelated to the situation.

Question 41General Science

In a Jharkhand forest, a constable observes an animal with a scaly, keratin-covered body that lays eggs and feeds its young with milk. Which class of vertebrates does this animal belong to?

  1. Mammalia Correct answer.
  2. Reptilia
  3. Amphibia
  4. Aves

Explanation

Mammals are defined by mammary glands that produce milk for the young; the pangolin is a scaly mammal, since its scales are keratin and it still suckles its offspring. Egg-laying does not exclude it from Mammalia, because monotremes also lay eggs. Reptiles have scales but never produce milk.

Question 42General Science

During evidence handling, a constable must identify a substance that dissolves in water, conducts electricity in solution and turns blue litmus red. Which type of substance is it?

  1. A neutral salt
  2. A base
  3. An acid Correct answer.
  4. A metal

Explanation

Acids release hydrogen ions in water, which conduct electricity and turn blue litmus red. Bases turn red litmus blue, while neutral salts leave litmus unchanged. The litmus colour change is the decisive test here.

Question 43General Science

A vehicle is reported to be moving at a steady 54 km/h. What distance does it cover in 20 seconds?

  1. 270 metres
  2. 150 metres
  3. 300 metres Correct answer.
  4. 1080 metres

Explanation

Convert the speed to metres per second by multiplying by 5/18: 54 km/h equals 15 m/s. Multiplying 15 m/s by 20 s gives 300 metres. Conversion before multiplication is the key step in such speed-distance problems.

Question 44General Science

A constable reads that the normal human body temperature is about 37 degrees Celsius. What is this value on the Fahrenheit scale?

  1. 37 degrees Fahrenheit
  2. 98.6 degrees Fahrenheit Correct answer.
  3. 66.6 degrees Fahrenheit
  4. 100 degrees Fahrenheit

Explanation

The conversion formula is F = (9/5)C + 32. Substituting 37 gives 66.6 + 32, which equals 98.6 degrees Fahrenheit. This is the familiar clinical normal temperature.

Question 45General Science

Which part of the human eye contains the light-sensitive cells that convert light into nerve impulses?

  1. Iris
  2. Retina Correct answer.
  3. Sclera
  4. Cornea

Explanation

The retina lines the back of the eye and holds rods and cones, the photoreceptor cells that generate nerve signals. The cornea and lens only focus light, while the iris controls pupil size. Signals from the retina travel along the optic nerve to the brain.

Question 46General Science

A body is dropped from rest and falls freely under gravity, taking air resistance as negligible. Which statement about its motion is correct?

  1. Both its velocity and acceleration remain constant
  2. Its velocity remains constant while its acceleration increases
  3. Its acceleration decreases as its velocity increases
  4. Its acceleration remains constant while its velocity increases Correct answer.

Explanation

In free fall the only force is gravity, so acceleration stays equal to g, about 9.8 m/s squared. Velocity, however, changes by g every second, so it keeps increasing. This distinction between constant acceleration and changing velocity is fundamental in kinematics.

Question 47General Science

Which gas makes up the largest proportion of the Earth's atmosphere by volume?

  1. Carbon dioxide
  2. Nitrogen Correct answer.
  3. Argon
  4. Oxygen

Explanation

Nitrogen accounts for roughly 78 percent of the atmosphere by volume, while oxygen is about 21 percent. Carbon dioxide and argon are present only in trace amounts. This composition matters for respiration and combustion studies.

Question 48General Science

A constable notes that iron objects left in damp air develop a reddish-brown coating. What is the chemical name of this coating?

  1. Iron(II) sulphate
  2. Calcium carbonate
  3. Sodium chloride
  4. Hydrated iron(III) oxide Correct answer.

Explanation

Rust is hydrated iron(III) oxide, formed when iron reacts with oxygen and moisture. Iron sulphate is a salt formed with sulphuric acid, and calcium carbonate is chalk or limestone. Sodium chloride is common salt and plays no part in the rust coating itself.

Question 49General Science

A constable must lift a 60 kg box using a single fixed pulley. Ignoring friction and the pulley's own weight, what effort is needed? (Take g as 10 m/s squared.)

  1. 300 N
  2. 1200 N
  3. 60 N
  4. 600 N Correct answer.

Explanation

A single fixed pulley changes the direction of force but gives no mechanical advantage, so the effort equals the load's weight. Weight is mass times g, that is 60 times 10, giving 600 newtons. The pulley only lets the constable pull downward instead of lifting upward.

Question 50General Science

Two resistors of 6 ohms and 3 ohms are connected in parallel across a 12 V supply. What is the total current drawn from the supply?

  1. 6 A Correct answer.
  2. 4 A
  3. 0.5 A
  4. 2 A

Explanation

The parallel equivalent resistance is found from 1/R = 1/6 + 1/3 = 1/2, so R equals 2 ohms. Using Ohm's law, current is 12 V divided by 2 ohms, which gives 6 amperes. Alternatively, branch currents of 2 A and 4 A add to the same total.