Practice

Question 1

10 years ago the ratio of ages of Ramesh and Rajeev was 1 : 3. Five years hence this ratio will become 2 : 3. What is the ratio of their ages at present?

See answer

Correct answer: (B) 3 : 5
Take the ages ten years ago as x and 3x. Five years hence they will be x + 15 and 3x + 15, and 3(x + 15) = 2(3x + 15) gives 3x = 15, that is x = 5. So the present ages are 15 and 25 years, a ratio of 3 : 5.

1 marks · 2023 · Set A

Question 2

If I walk from my house to the station at 5 km per hour, my train will have left the station 7 minutes before I arrive. But if I walk at 6 km per hour, I will reach the station 5 minutes before the train departs. What is the distance between my house and the station?

See answer

Correct answer: (C) 6 km

1 marks · 2023 · Set A

Question 3

The average monthly income of P and Q is ₹5,050. The average monthly income of Q and R is ₹6,250, and the average monthly income of P and R is ₹5,200. What is P’s monthly income?

See answer

Correct answer: (C) ₹4,000
From the conditions P + Q = 10,100, Q + R = 12,500 and P + R = 10,400. Adding all three, 2(P + Q + R) = 33,000, so P + Q + R = 16,500. Taking Q + R from it leaves P = ₹4,000.

1 marks · 2023 · Set A

Question 4

If 30% of P is added to 40% of Q, it becomes 80% of Q. Accordingly, what percentage is Q of P?

See answer

Correct answer: (C) 75%
From the condition 0·3P + 0·4Q = 0·8Q, so 0·3P = 0·4Q and Q = 0·75P. That is, Q is 75% of P.

1 marks · 2023 · Set A

Question 5

A sum of money is to be distributed among A, B, C and D in the proportion 5 : 2 : 4 : 3. If C gets ₹1,000 more than D, what is B’s share?

See answer

Correct answer: (C) ₹2,000
In the ratio 5 : 2 : 4 : 3 the difference between C's and D's shares is 4 − 3 = 1 part, which equals ₹1,000. So one part = ₹1,000 and B's share = 2 parts = ₹2,000.

1 marks · 2023 · Set A

Question 6

A shopkeeper gives a discount of 5% on the selling price of a watch. If he gives a discount of 6%, he will earn a profit ₹15 less than before. What is the marked selling price of the watch?

See answer

Correct answer: (B) ₹1,500

1 marks · 2023 · Set A

Question 7

Three numbers are in the ratio 3 : 4 : 5. The sum of the largest and smallest numbers equals the other number plus 52. What is the smallest number?

See answer

Correct answer: (B) 39
Take the numbers as 3x, 4x and 5x. The sum of the largest and the smallest is 8x, which equals 4x + 52. That gives 4x = 52 and x = 13, so the smallest number is 39.

1 marks · 2023 · Set A

Question 8

If 2^(2n−1) = 1/8^(n−3), then what is the value of n?

See answer

Correct answer: (B) 2

1 marks · 2023 · Set A

Question 9

Which of the following photoelectric devices is most suitable for digital applications?

See answer

Correct answer: (A) Photovoltaic cell
A photo-voltaic cell generates a voltage of itself when light falls on it, so it can be joined straight into a circuit without an external battery—the Commission's key takes that as the most suitable for digital applications.

1 marks · 2023 · Set A

Question 10

The critical mass of a fissionable material is

See answer

Correct answer: (B) The minimum mass needed for a chain reaction
The critical mass of a fissionable material is the least mass at which a chain reaction can keep itself going. Below it the neutrons escape and the reaction stops.

1 marks · 2023 · Set A

Question 11

Which gas is used to force the ripening of fruits?

See answer

Correct answer: (B) Ethylene
Ethylene gas is used to ripen fruit quickly. It is the plant's own natural hormone, which hastens the ripening.

1 marks · 2023 · Set A

Question 12

Which of the following has zero octane number?

See answer

Correct answer: (C) n-octane
On the octane scale n-octane is taken as zero and iso-octane as 100. So the fuel of zero octane number is n-octane.
The Commission's key answers this ‘None of the above’, but n-octane is itself option 3, and the zero of the octane scale is fixed by it. So the answer is taken as 3 here.

1 marks · 2023 · Set A

Question 13

The edible part of litchis is

See answer

Correct answer: (A) Aril
The juicy part of a litchi that we eat is the aril, a fleshy growth that develops around the seed.

1 marks · 2023 · Set A

Question 14

The physical process involved in the release of molecular oxygen from leaves is

See answer

Correct answer: (A) Diffusion
The oxygen made in photosynthesis leaves the leaf through the stomata by diffusion—gases always spread from higher to lower concentration. Transpiration releases water vapour, and osmosis concerns water.

1 marks · 2023 · Set A

Question 15

The process of finding the relative location of genes on a chromosome is called

See answer

Correct answer: (C) Gene mapping
Finding the relative positions of genes on a chromosome, and the distances between them, is called gene mapping; the distance is judged from the frequency of recombination.

1 marks · 2023 · Set A

Question 16

The spore mother cell in bryophytes is

See answer

Correct answer: (B) Diploid
A bryophyte's life cycle is gametophyte-dominant, but the capsule belongs to the sporophyte. Its spore mother cell is diploid, and by meiosis it gives haploid spores.

1 marks · 2023 · Set A

Question 17

In which year was the National Green Tribunal (NGT) established by the Government of India for the protection of the environment and forests?

See answer

Correct answer: (A) 2010

1 marks · 2023 · Set A

Question 18

Which Indian city started the first underwater metro?

See answer

Correct answer: (E) None of the above
India's first underwater metro began in Kolkata, running through a tunnel under the Hooghly. All three cities given are wrong, so the answer is ‘None of the above’.

1 marks · 2023 · Set A

Question 19

Under India’s G20 Presidency, where was the Tourism Working Group Meeting held?

See answer

Correct answer: (B) Srinagar (Jammu and Kashmir)
Under India's G20 Presidency the Tourism Working Group Meeting was held at Srinagar in Jammu and Kashmir.

1 marks · 2023 · Set A

Question 20

Who among the following won the silver medal in the National Under-17 Girls Wrestling Championship?

See answer

Correct answer: (B) Nirjala

1 marks · 2023 · Set A

Question 21

Who won the 2022 International Booker Prize for the novel Tomb of Sand?

See answer

Correct answer: (A) Geetanjali Shree and Daisy Rockwell
The International Booker Prize for 2022 went jointly to the author Geetanjali Shree and the translator Daisy Rockwell for ‘Tomb of Sand’—the first work in Hindi to win it.

1 marks · 2023 · Set A

Question 22

Who was the Chief Guest on India’s 74th Republic Day?

See answer

Correct answer: (B) Abdel Fattah El-Sisi
The Chief Guest at India's 74th Republic Day (2023) was the President of Egypt, Abdel Fattah El-Sisi.

1 marks · 2023 · Set A

Question 23

In which district of Bihar has the first floating solar power plant been built?

See answer

Correct answer: (A) Darbhanga
Bihar's first floating solar power plant was built in Darbhanga district, with the panels floated on the surface of a pond. That saves land, and the coolness of the water lets the panels work more efficiently.

1 marks · 2023 · Set A

Question 24

Which of the following has received a GI tag in Bihar?

See answer

Correct answer: (A) Maghai Paan
Maghai Paan of Bihar carries a Geographical Indication tag, which marks a product as belonging to a particular place by its qualities and reputation.

1 marks · 2023 · Set A

Question 25

Match List I with List II: List I: a. Char, b. Kankar, c. Kayal, d. Mand. List II: 1. Punjab plain, 2. Delta, 3. Bangar, 4. Coastal plain. Select the correct answer using the codes below.

See answer

Correct answer: (B) a–2, b–3, c–4, d–1
The matching runs thus—‘char’ is the new alluvium of the delta, ‘kankar’ the lumps of lime found in the old alluvium of the bangar, ‘kayal’ the lagoon of the coastal plain, and ‘mand’ the low ground of a river's old course in the Punjab plain. So a-2, b-3, c-4, d-1.

1 marks · 2023 · Set A

Question 26

Which of the following tributaries does not join the Brahmaputra River from the north?

See answer

Correct answer: (E) None of the above
The Subansiri, the Belsiri and the Manas all join the Brahmaputra from the north, so the answer is ‘None of the above’. The chief tributaries from the south are the Kopili and the Dhansiri.

1 marks · 2023 · Set A

Question 27

In which Indian state is the Likhapani Glacier located?

See answer

Correct answer: (A) Arunachal Pradesh

1 marks · 2023 · Set A

Question 28

The Magadha and Anga plains are parts of

See answer

Correct answer: (B) Middle Ganga plain

1 marks · 2023 · Set A

Question 29

Which of the following pairs of waterfalls and rivers is not correctly matched?

See answer

Correct answer: (D) More than one of the above
The Jog falls are on the Sharavati—that pair is right. But both Kapildhara and Dhuandhar are on the Narmada, not on the Kaveri or the Godavari. Two pairs being wrong, the answer is ‘more than one’.

1 marks · 2023 · Set A

Question 30

Arrange the following Indian seaports from north to south: 1. Kakinada, 2. Machilipatnam, 3. Nagapattinam, 4. Visakhapatnam. Select the correct answer using the codes below.

See answer

Correct answer: (B) 4, 1, 2, 3

1 marks · 2023 · Set A

Question 31

The Agreement on the Kosi Irrigation and Hydroelectricity Plan was signed in 1954 between which two countries?

See answer

Correct answer: (C) India and Nepal

1 marks · 2023 · Set A

Question 32

In which climatic division does Bihar fall according to R. L. Singh’s classification scheme?

See answer

Correct answer: (B) Subhumid transitional
In R. L. Singh's classification Bihar falls in the subhumid transitional climatic division—the belt between the humid east and the drier west.

1 marks · 2023 · Set A

Question 33

In which session of the Indian National Congress was the resolution of ‘Purna Swaraj’ adopted?

See answer

Correct answer: (B) Lahore Session, 1929
The resolution of ‘Purna Swaraj’ was adopted at the Lahore session of the Congress in 1929, presided over by Jawaharlal Nehru. The first Independence Day was kept on 26 January 1930.

1 marks · 2023 · Set A

Question 34

What was an initial objective of the ‘Kuka Movement’ in Punjab?

See answer

Correct answer: (A) To purify the Sikh religion

1 marks · 2023 · Set A

Question 35

Who described the Revolt of 1857 as the ‘First Indian War of Independence’?

See answer

Correct answer: (A) V. D. Savarkar
Vinayak Damodar Savarkar, in his book ‘The Indian War of Independence, 1857’, called the revolt India's first war of independence. R. C. Majumdar disagreed with that view.

1 marks · 2023 · Set A

Question 36

Where was the first instance of organized non-cooperation in the history of Indian peasantry held?

See answer

Correct answer: (A) Bihar and Bengal
The first instance of organised non-cooperation in the history of the Indian peasantry is found in Bihar and Bengal, where the peasants forced to grow indigo together refused to sow it.

1 marks · 2023 · Set A

Question 37

Which portfolio did Dr. Rajendra Prasad hold in the Interim Government of 1946?

See answer

Correct answer: (C) Food and Agriculture
In the Interim Government of 1946 Dr Rajendra Prasad was given the Food and Agriculture portfolio. He went on to be President of the Constituent Assembly and the country's first President.

1 marks · 2023 · Set A

Question 38

Who particularly urged Gandhiji to visit Champaran to witness the miseries of the ryots?

See answer

Correct answer: (B) Rajkumar Shukla
It was the Champaran peasant Rajkumar Shukla who urged Gandhiji again and again to come and see the misery there, and the Champaran Satyagraha began in 1917.

1 marks · 2023 · Set A

Question 39

On which date did the Muslim League observe the ‘Day of Deliverance’?

See answer

Correct answer: (A) 22 December 1939
The Muslim League observed the ‘Day of Deliverance’ on 22 December 1939, after the Congress ministries resigned.

1 marks · 2023 · Set A

Question 40

Who laid the foundation stone of National College and Bihar Vidyapeeth?

See answer

Correct answer: (C) Mahatma Gandhi
The foundation stone of the National College and of Bihar Vidyapeeth was laid by Mahatma Gandhi—both were national institutions of education set up during the Non-Cooperation Movement.

1 marks · 2023 · Set A

Question 41

کیا وہ نمرود کی خدائی تھی، بندی میں مرا بھلا نہ ہوا، کیا، کیا کہیں گے؟

See answer

Correct answer: (A) استفہام

1 marks · 2023 · Set A

Question 42

دردِ منت کشِ دوا نہ ہوا، میں نہ اچھا ہوا برا نہ ہوا۔ اچھا اور برا میں کون سا رشتہ ہے؟

See answer

Correct answer: (C) تضاد

1 marks · 2023 · Set A

Question 43

’یاد کرو‘ میں فعل کیا ہے؟

See answer

Correct answer: (C) فعل امر

1 marks · 2023 · Set A

Question 44

’بنتے ہیں ترے سائے میں سب شجر و بہمن‘، ’سائے‘ کے کیا معنی ہیں؟

See answer

Correct answer: (B) پناہ

1 marks · 2023 · Set A

Question 45

’گرمی سے مضطرب تھا زمانہ زمین پر، بجھ جاتا تھا جو گرمی تھا دامن زمین پر‘—اس شعر میں کون سی صنعت استعمال ہوئی ہے؟

See answer

Correct answer: (C) مبالغہ

1 marks · 2023 · Set A

Question 46

’عبید‘ کیا ہے؟

See answer

Correct answer: (D) حسبِ بالا میں سے ایک سے زائد

1 marks · 2023 · Set A

Question 47

’لشکر کش و تاجدار تھا وہ، دشمن کش و شہسوار تھا وہ‘—’کش‘ میں کون سی صنعت ہے؟

See answer

Correct answer: (C) تجنیس محرّف

1 marks · 2023 · Set A

Question 48

لفظ ’افضل‘ کیا ہے؟

See answer

Correct answer: (C) اسم تفضیل

1 marks · 2023 · Set A

Question 49

’نظم‘ کے لغوی معنی کیا ہیں؟

See answer

Correct answer: (A) لڑی پرونا

1 marks · 2023 · Set A

Question 50

خالق نے دیتے تھے چار فرزند: عاقل، دانا، ذکی، خردمند۔ چار فرزند کی مصرع ثانی میں چار صنعتیں ترتیب سے بیان ہوئی ہیں؛ بتائیے کون سی صنعت ہے؟

See answer

Correct answer: (C) لف و نشر مرتب

1 marks · 2023 · Set A

TRE1 — General Studies And Urdu