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Delhi Police Constable practice questions

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Question 1General Awareness

The Constitution of India was adopted by the Constituent Assembly on which date?

  1. 15 August 1947
  2. 9 December 1946
  3. 26 January 1950
  4. 26 November 1949 Correct answer.

Explanation

The Constituent Assembly adopted the Constitution on 26 November 1949, a date now observed as Constitution Day. The document came into force on 26 January 1950, which is celebrated as Republic Day. 15 August 1947 marks independence, while 9 December 1946 was the Assembly's first sitting.

Question 2General Awareness

Which Article of the Indian Constitution abolishes untouchability?

  1. Article 21
  2. Article 15
  3. Article 14
  4. Article 17 Correct answer.

Explanation

Article 17 abolishes untouchability and forbids its practice in any form, and the Protection of Civil Rights Act 1955 gives it teeth. Article 14 guarantees equality before the law, and Article 15 prohibits discrimination on listed grounds. Article 21 protects life and personal liberty.

Question 3General Awareness

Who is the constitutional head of the Indian Union?

  1. The President Correct answer.
  2. The Chief Justice of India
  3. The Prime Minister
  4. The Speaker of the Lok Sabha

Explanation

The President is the constitutional head of the Union; executive power of the Union is vested in the President and exercised on the advice of the Council of Ministers. The Prime Minister heads the real executive, while the Chief Justice heads the judiciary and the Speaker presides over the Lok Sabha.

Question 4General Awareness

Which body conducts elections to the Lok Sabha and State Legislative Assemblies in India?

  1. Election Commission of India Correct answer.
  2. Comptroller and Auditor General
  3. Union Public Service Commission
  4. NITI Aayog

Explanation

The Election Commission of India, a constitutional body under Article 324, superintends and controls elections to Parliament, State legislatures, and the offices of President and Vice-President. NITI Aayog is a policy think tank, UPSC handles recruitment to civil services, and the CAG audits public accounts.

Question 5General Awareness

The Tropic of Cancer passes through which Indian state?

  1. Rajasthan Correct answer.
  2. Tamil Nadu
  3. Kerala
  4. Punjab

Explanation

The Tropic of Cancer crosses eight Indian states, and Rajasthan is among them, passing near Banswara in its southern part. Kerala and Tamil Nadu lie entirely south of the Tropic, and Punjab lies entirely north of it.

Question 6General Awareness

Which river is known as the 'Sorrow of Bihar'?

  1. Son
  2. Kosi Correct answer.
  3. Damodar
  4. Gandak

Explanation

The Kosi is called the Sorrow of Bihar because it shifts course frequently and floods large parts of north Bihar. The Damodar is known as the Sorrow of Bengal, while the Son and Gandak are tributaries of the Ganga without that nickname.

Question 7General Awareness

Which is the largest gland in the human body?

  1. Pituitary
  2. Thyroid
  3. Pancreas
  4. Liver Correct answer.

Explanation

The liver is the largest gland in the human body, weighing roughly 1.5 kg in adults, and it secretes bile. The pancreas is a mixed gland but much smaller, the thyroid is in the neck, and the pituitary is a pea-sized gland at the base of the brain.

Question 8General Awareness

Who was the founder of the Maurya Empire?

  1. Chandragupta Maurya Correct answer.
  2. Bindusara
  3. Bimbisara
  4. Ashoka

Explanation

Chandragupta Maurya founded the Maurya Empire around 321 BCE with the help of Chanakya, overthrowing the Nanda dynasty. Ashoka and Bindusara were later Mauryan rulers, while Bimbisara belonged to the Haryanka dynasty of Magadha.

Question 9General Awareness

The Battle of Plassey was fought in which year?

  1. 1857
  2. 1764
  3. 1757 Correct answer.
  4. 1707

Explanation

The Battle of Plassey was fought in 1757, when the English East India Company under Robert Clive defeated Siraj-ud-Daulah, the Nawab of Bengal. 1764 marks the Battle of Buxar, 1857 the Revolt, and 1707 the death of Aurangzeb.

Question 10General Awareness

Which constitutional amendment lowered the voting age in India from 21 to 18 years?

  1. 73rd Amendment
  2. 61st Amendment Correct answer.
  3. 44th Amendment
  4. 42nd Amendment

Explanation

The 61st Constitutional Amendment Act, 1988, reduced the voting age from 21 to 18 years by amending Article 326, and it took effect in 1989. The 42nd and 44th Amendments dealt with other changes, and the 73rd Amendment concerned Panchayati Raj.

Question 11General Awareness

In which schedule of the Indian Constitution are the languages recognised as official languages listed?

  1. Ninth Schedule
  2. Eighth Schedule Correct answer.
  3. Sixth Schedule
  4. Seventh Schedule

Explanation

The Eighth Schedule lists the languages recognised by the Constitution, and Article 344 provides for a Commission and Committee of Parliament on official language. The Sixth Schedule deals with tribal areas, the Seventh divides powers between the Union and States, and the Ninth contains laws shielded from judicial review.

Question 12General Awareness

A money bill can be introduced in the Indian Parliament only on the recommendation of which authority?

  1. The Finance Secretary
  2. The Vice-President
  3. The President Correct answer.
  4. The Speaker

Explanation

Under Article 117, a money bill can be introduced only in the Lok Sabha and only on the recommendation of the President. The Speaker certifies whether a bill is a money bill, but does not recommend its introduction, and the Vice-President has no role in this.

Question 13General Awareness

Which writ is issued to a public authority to compel it to perform a duty imposed by law?

  1. Habeas Corpus
  2. Certiorari
  3. Mandamus Correct answer.
  4. Quo Warranto

Explanation

Mandamus literally means 'we command' and is issued to compel a public authority to perform a legal duty it has failed to perform. Habeas Corpus secures release from unlawful detention, Certiorari quashes a lower court's order, and Quo Warranto questions a person's authority to hold public office.

Question 14General Awareness

The Western Ghats are also known by which name?

  1. Sahyadri Correct answer.
  2. Vindhya Range
  3. Aravalli Hills
  4. Nilgiri Hills

Explanation

The Western Ghats are called the Sahyadri in Maharashtra and Karnataka. The Aravalli and Vindhya ranges lie in central and western India, and the Nilgiris are a southern part of the Western Ghats rather than another name for the whole range.

Question 15General Awareness

Which soil type is most suitable for cotton cultivation in India?

  1. Alluvial soil
  2. Desert soil
  3. Laterite soil
  4. Black soil Correct answer.

Explanation

Black soil, also called regur or black cotton soil, retains moisture well and is rich in iron, lime and magnesia, making it ideal for cotton. Laterite soil suits tea and cashew, alluvial soil suits rice and wheat, and desert soil is sandy and poor in humus.

Question 16General Awareness

Which vitamin deficiency causes scurvy?

  1. Vitamin A
  2. Vitamin D
  3. Vitamin B12
  4. Vitamin C Correct answer.

Explanation

Scurvy results from a deficiency of Vitamin C, also called ascorbic acid, and causes bleeding gums and poor wound healing. Vitamin A deficiency causes night blindness, B12 deficiency causes pernicious anaemia, and Vitamin D deficiency causes rickets.

Question 17General Awareness

Who wrote the book 'Discovery of India'?

  1. Jawaharlal Nehru Correct answer.
  2. Subhas Chandra Bose
  3. Mahatma Gandhi
  4. Rabindranath Tagore

Explanation

Jawaharlal Nehru wrote 'The Discovery of India' while imprisoned at Ahmednagar Fort during 1942 to 1946. Gandhi's autobiography is 'My Experiments with Truth', Tagore wrote 'Gitanjali', and Bose wrote works such as 'The Indian Struggle'.

Question 18General Awareness

The Rowlatt Act of 1919 was passed to allow the government to do which of the following?

  1. Abolish the zamindari system
  2. Grant dominion status to India
  3. Introduce separate electorates
  4. Detain suspects without trial Correct answer.

Explanation

The Rowlatt Act allowed the government to arrest and detain persons suspected of sedition without trial, which triggered nationwide protests and the Jallianwala Bagh massacre. Separate electorates came through the Morley-Minto reforms, and zamindari abolition and dominion status were unrelated demands.

Question 19General Awareness

Which is the highest mountain peak entirely within Indian territory?

  1. Kanchenjunga
  2. K2
  3. Nanda Devi Correct answer.
  4. Nanga Parbat

Explanation

Nanda Devi in Uttarakhand is the highest peak lying entirely within India. Kanchenjunga lies on the India-Nepal border, K2 is in Pakistan-occupied territory, and Nanga Parbat lies in Pakistan.

Question 20General Awareness

The Panchayati Raj system was given constitutional status by which amendment?

  1. 86th Amendment
  2. 52nd Amendment
  3. 74th Amendment
  4. 73rd Amendment Correct answer.

Explanation

The 73rd Amendment Act, 1992, inserted Part IX and the Eleventh Schedule, giving constitutional status to Panchayati Raj institutions. The 74th Amendment did the same for urban local bodies, the 52nd dealt with anti-defection, and the 86th concerned education.

Question 21General Awareness

The 'Doctrine of Basic Structure' was propounded in which case?

  1. Maneka Gandhi v. Union of India
  2. Shankari Prasad v. Union of India
  3. Kesavananda Bharati v. State of Kerala Correct answer.
  4. Golaknath v. State of Punjab

Explanation

In Kesavananda Bharati v. State of Kerala (1973), the Supreme Court held that Parliament can amend the Constitution but cannot destroy its basic structure. Golaknath and Shankari Prasad dealt with the amendability of fundamental rights, and Maneka Gandhi expanded Article 21.

Question 22General Awareness

Which Article of the Indian Constitution provides for the appointment of a Finance Commission?

  1. Article 356
  2. Article 280 Correct answer.
  3. Article 324
  4. Article 263

Explanation

Article 280 provides for a Finance Commission constituted every five years to recommend the distribution of taxes between the Union and States. Article 263 covers inter-state councils, Article 324 the Election Commission, and Article 356 President's Rule.

Question 23General Awareness

Which of the following is the correct sequence of the Gupta rulers?

  1. Samudragupta, Chandragupta I, Chandragupta II
  2. Samudragupta, Chandragupta II, Chandragupta I
  3. Chandragupta I, Samudragupta, Chandragupta II Correct answer.
  4. Chandragupta II, Samudragupta, Chandragupta I

Explanation

Chandragupta I established the Gupta Empire, his son Samudragupta expanded it through conquests, and Chandragupta II, also called Vikramaditya, succeeded him. This order is confirmed by the Allahabad Pillar inscription and coins.

Question 24General Awareness

A person is detained by the police without being informed of the grounds of arrest. Which fundamental right is primarily violated?

  1. Article 22 Correct answer.
  2. Article 25
  3. Article 19
  4. Article 20

Explanation

Article 22 protects persons arrested or detained and requires that they be informed of the grounds of arrest and allowed to consult a lawyer. Article 19 covers freedoms such as speech and movement, Article 20 protects against ex-post-facto laws and double jeopardy, and Article 25 protects religious freedom.

Question 25General Awareness

Which of the following best explains why the Indian Constitution is described as 'quasi-federal'?

  1. It has a strong Centre with residuary powers and emergency provisions Correct answer.
  2. It provides for a single citizenship and an independent judiciary
  3. It has a bicameral legislature at the Centre
  4. It divides powers between the Union and States under a written Constitution

Explanation

The Constitution borrows federal features such as a written Constitution and division of powers but tilts towards the Centre through residuary powers under Article 248, appointment of Governors, and emergency provisions. This centralising tilt makes it quasi-federal. A single citizenship and bicameralism alone do not explain the label.

Question 26General Awareness

Which body in India is constitutionally responsible for conducting elections to the Lok Sabha and the State Legislative Assemblies?

  1. Election Commission of India Correct answer.
  2. Union Public Service Commission
  3. Comptroller and Auditor General of India
  4. NITI Aayog

Explanation

Article 324 of the Constitution establishes the Election Commission of India and vests it with the superintendence, direction and control of elections to Parliament, State legislatures, the office of President and the office of Vice-President. It functions as an independent constitutional authority. The other bodies listed perform planning, recruitment or audit functions, not election management.

Question 27General Awareness

The Tropic of Cancer passes through which of the following Indian states?

  1. Kerala
  2. Rajasthan Correct answer.
  3. Punjab
  4. Karnataka

Explanation

The Tropic of Cancer at roughly 23.5 degrees north latitude crosses India through Gujarat, Rajasthan, Madhya Pradesh, Chhattisgarh, Jharkhand, West Bengal, Tripura and Mizoram. Rajasthan lies on this line, near its southern districts. Kerala, Punjab and Karnataka lie entirely north or south of it.

Question 28General Awareness

Which part of the human body produces insulin?

  1. Spleen
  2. Liver
  3. Kidney
  4. Pancreas Correct answer.

Explanation

Insulin is secreted by the beta cells of the islets of Langerhans located in the pancreas. It lowers blood glucose by promoting cellular uptake and storage of glucose. Deficiency or ineffectiveness of insulin leads to diabetes mellitus. The liver, kidney and spleen do not produce insulin.

Question 29General Awareness

Who among the following founded the Servants of India Society in 1905?

  1. Bipin Chandra Pal
  2. Bal Gangadhar Tilak
  3. Lala Lajpat Rai
  4. Gopal Krishna Gokhale Correct answer.

Explanation

Gopal Krishna Gokhale founded the Servants of India Society in Pune in 1905 to train dedicated public workers for social reform and national service. Gokhale was a moderate leader who favoured constitutional methods and mentored Mahatma Gandhi. The other leaders named were associated with the Extremist wing or other organisations.

Question 30General Awareness

The Reserve Bank of India was established in which year?

  1. 1947
  2. 1955
  3. 1949
  4. 1935 Correct answer.

Explanation

The Reserve Bank of India began operations on 1 April 1935 under the Reserve Bank of India Act, 1934, initially as a shareholders' bank. It was nationalised in 1949, the year the Banking Regulation Act also came into force. Its establishment preceded independence, so 1947 is not the founding year.

Question 31General Awareness

Which of the following is the correct order of the layers of the atmosphere from the Earth's surface upward?

  1. Troposphere, Mesosphere, Stratosphere, Thermosphere
  2. Troposphere, Stratosphere, Mesosphere, Thermosphere Correct answer.
  3. Mesosphere, Troposphere, Thermosphere, Stratosphere
  4. Stratosphere, Troposphere, Mesosphere, Thermosphere

Explanation

The atmosphere is layered by temperature behaviour: the troposphere lies nearest the surface, followed by the stratosphere containing the ozone layer, then the mesosphere where meteors burn up, and finally the thermosphere. The troposphere holds most weather phenomena and the stratosphere warms with height. Any sequence that places the stratosphere or mesosphere out of order is incorrect.

Question 32General Awareness

The Fundamental Duties were added to the Indian Constitution on the recommendation of which committee?

  1. Ashok Mehta Committee
  2. Sarkaria Commission
  3. Balwant Rai Mehta Committee
  4. Swaran Singh Committee Correct answer.

Explanation

Fundamental Duties were inserted by the 42nd Amendment Act, 1976, on the recommendation of the Swaran Singh Committee, which had suggested a set of citizen obligations. They were placed in Article 51A of Part IVA. A further duty on education for children was added by the 86th Amendment in 2002.

Question 33General Awareness

Which of the following pairs of Indian dance form and its state of origin is correctly matched?

  1. Kuchipudi - Tamil Nadu
  2. Kathakali - Kerala Correct answer.
  3. Bharatanatyam - Odisha
  4. Sattriya - Manipur

Explanation

Kathakali is a classical dance-drama tradition of Kerala, known for elaborate makeup, costumes and mime. The other classical forms have different homes: Bharatanatyam belongs to Tamil Nadu, Kuchipudi to Andhra Pradesh and Sattriya to Assam. Matching each form to its correct state is the key to this question.

Question 34General Awareness

Who was the first woman to become the Chief Minister of an Indian state?

  1. Sucheta Kripalani Correct answer.
  2. Vijaya Lakshmi Pandit
  3. Indira Gandhi
  4. Sarojini Naidu

Explanation

Sucheta Kripalani became Chief Minister of Uttar Pradesh in 1963, making her the first woman to head an Indian state government. Indira Gandhi became Prime Minister in 1966, but that is a Union office. Sarojini Naidu and Vijaya Lakshmi Pandit held governorships and diplomatic posts rather than a chief ministership.

Question 35General Awareness

Which of the following is the chemical name of baking soda?

  1. Sodium carbonate
  2. Sodium bicarbonate Correct answer.
  3. Sodium chloride
  4. Calcium carbonate

Explanation

Baking soda is sodium bicarbonate, formula NaHCO3, a mild base that releases carbon dioxide when heated or treated with acid, which makes dough rise. Sodium carbonate is washing soda, calcium carbonate is limestone or chalk, and sodium chloride is common salt. Each has distinct properties and household uses.

Question 36General Awareness

Which of the following is the largest public sector bank of India by assets?

  1. Punjab National Bank
  2. Canara Bank
  3. State Bank of India Correct answer.
  4. Bank of Baroda

Explanation

The State Bank of India is the largest public sector bank in India in terms of assets, branches and deposits, tracing its lineage to the Imperial Bank of India, which was nationalised in 1955. It has absorbed associate banks and other entities over time. The other banks named are large but smaller than SBI.

Question 37General Awareness

Which of the following is the correct sequence of the four Ashramas in the traditional Hindu scheme of life?

  1. Vanaprastha, Brahmacharya, Grihastha, Sannyasa
  2. Brahmacharya, Vanaprastha, Grihastha, Sannyasa
  3. Grihastha, Brahmacharya, Sannyasa, Vanaprastha
  4. Brahmacharya, Grihastha, Vanaprastha, Sannyasa Correct answer.

Explanation

The classical ashrama scheme moves from student life (brahmacharya) to householder duties (grihastha), then to gradual withdrawal (vanaprastha) and finally to renunciation (sannyasa). This order reflects stages of duty and detachment across a lifetime. Sequences that place the householder stage before studentship or renunciation before withdrawal are incorrect.

Question 38General Awareness

A candidate wins a Lok Sabha seat by defeating the nearest rival by a margin of votes. Which voting method does this outcome illustrate?

  1. First-past-the-post system Correct answer.
  2. Cumulative voting
  3. List system of proportional representation
  4. Proportional representation by single transferable vote

Explanation

In the first-past-the-post system, the candidate with the highest number of valid votes wins, even without an absolute majority, and the margin over the runner-up is simply the difference in votes. India uses this method for Lok Sabha and Assembly elections. Proportional representation with a single transferable vote is used for President and Vice-President elections and for Rajya Sabha seats.

Question 39General Awareness

A person who is a citizen of India by birth later voluntarily acquires the citizenship of another country. Under the Citizenship Act, 1955, what is the effect on Indian citizenship?

  1. Indian citizenship is terminated automatically upon such acquisition Correct answer.
  2. Indian citizenship is suspended until the person returns to India
  3. Indian citizenship continues because it was acquired by birth
  4. Indian citizenship is retained if the person informs the local police station

Explanation

Section 9 of the Citizenship Act, 1955 provides that a citizen of India who voluntarily acquires the citizenship of another country ceases to be a citizen of India. The mode by which Indian citizenship was originally obtained, such as birth, does not protect against this rule. There is no provision for suspension or for retention merely by informing the police.

Question 40General Awareness

A state government wishes to introduce a new tax on agricultural income within its territory. Which constitutional position applies?

  1. The state cannot levy it because the Constitution permits only the Union to tax income, including agricultural income
  2. The state may levy it only with the prior approval of the Finance Commission
  3. The state may levy it because agriculture is a state subject under the Seventh Schedule Correct answer.
  4. The state cannot levy it because taxes on agricultural income fall within the Union List

Explanation

Entry 46 of the State List empowers states to impose taxes on agricultural income, while Entry 82 of the Union List allows the Union to tax income other than agricultural income. This division lets states raise revenue from agriculture and prevents double taxation of the same base. The Finance Commission recommends revenue sharing but does not authorise state taxation.

Question 41Reasoning

In a coded language, DELHI is written as EFMIJ. Using the same code, how would POLICE be written?

  1. QPMJDF Correct answer.
  2. QPNJDF
  3. OPMJDF
  4. QPMJDE

Explanation

Each letter of the word moves one step forward in the English alphabet: D→E, E→F, and so on. Applying the same shift to POLICE gives Q, P, M, J, D, F in order.

Question 42Reasoning

Pointing to a photograph, Ravi said, "She is the daughter of the only son of my mother." How is the girl in the photograph related to Ravi?

  1. Niece
  2. Cousin
  3. Sister
  4. Daughter Correct answer.

Explanation

The only son of Ravi's mother is Ravi himself. The daughter of Ravi is therefore his own daughter, so the girl in the photograph is Ravi's daughter.

Question 43Reasoning

Find the next number in the series: 3, 6, 11, 18, 27, ?

  1. 40
  2. 42
  3. 38 Correct answer.
  4. 36

Explanation

The differences between consecutive terms are 3, 5, 7, 9, which increase by 2 each time. The next difference should be 11, and 27 + 11 = 38.

Question 44Reasoning

If South-East becomes North, North-East becomes West, and so on, then what will West become?

  1. South-East Correct answer.
  2. North-East
  3. South
  4. North-West

Explanation

The whole compass is rotated by 135 degrees anticlockwise, since South-East turning into North is a 135-degree turn. Applying the same 135-degree anticlockwise rotation to West lands on South-East.

Question 45Reasoning

Which word cannot be formed using only the letters of the word EXAMINATION, with each letter used as often as it appears in that word?

  1. ANIMATION
  2. NOMINATE Correct answer.
  3. MOTION
  4. NATION

Explanation

EXAMINATION contains one E, but NOMINATE requires two E letters, so it cannot be built from the given letters. The other three words use only letters available in sufficient quantity.

Question 46Reasoning

Complete the analogy: Constable is to Police Station as Soldier is to ______.

  1. Barracks Correct answer.
  2. Uniform
  3. Parade
  4. Weapon

Explanation

A constable is posted at and works from a police station, so the pair links a person to the place of duty. A soldier similarly works from and lives at barracks, making that the matching relationship.

Question 47Reasoning

Five students A, B, C, D and E sit in a row facing north. A is to the immediate left of B. C is at the extreme right end. D is not adjacent to C. E sits between A and D. Who sits at the extreme left end?

  1. D
  2. E Correct answer.
  3. A
  4. B

Explanation

With C at the right end and D not next to C, E must sit between A and D, placing E at the left end followed by A, D, B and C. Therefore E occupies the extreme left position.

Question 48Reasoning

Choose the number that does not belong to the group: 121, 144, 169, 180.

  1. 121
  2. 144
  3. 180 Correct answer.
  4. 169

Explanation

The numbers 121, 144 and 169 are perfect squares (11 squared, 12 squared and 13 squared). The number 180 is not a perfect square, so it is the odd one out.

Question 49Reasoning

If in a certain year 15 August falls on a Wednesday, what day of the week will 2 October of the same year be?

  1. Thursday
  2. Wednesday
  3. Tuesday
  4. Monday Correct answer.

Explanation

From 15 August to 2 October there are 48 days (16 remaining days of August plus 30 in September plus 2 in October). Since 48 divided by 7 leaves a remainder of 6, counting six days forward from Wednesday gives Monday.

Question 50Reasoning

A man walks 5 km towards the north, turns right and walks 3 km, then turns right again and walks 5 km. How far is he from his starting point and in which direction?

  1. 3 km east Correct answer.
  2. 5 km north
  3. 3 km west
  4. 8 km east

Explanation

Walking 5 km north, then 3 km east, then 5 km south cancels the northward movement. He ends up 3 km to the east of the starting point.