10 years ago, the ratio of Ramesh’s and Rajeev’s ages was 1:3. In 5 years, it will be 2:3. What is the ratio of their present ages?
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Correct answer: (B) 3:5
1 marks · 2023 · Set A
Question 2
Walking from home to the station at 5 km/h, my train leaves 7 minutes before I arrive. At 6 km/h, I reach 5 minutes before departure. What is the distance from home to the station?
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Correct answer: (C) 6 km
1 marks · 2023 · Set A
Question 3
The average monthly incomes of P and Q, Q and R, and P and R are ₹5,050, ₹6,250, and ₹5,200, respectively. What is P’s monthly income?
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Correct answer: (C) ₹4,000
1 marks · 2023 · Set A
Question 4
If 30% of P is added to 40% of Q, the result is 80% of Q. What percentage of P is Q?
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Correct answer: (C) 75%
1 marks · 2023 · Set A
Question 5
Money is distributed among A, B, C and D in the ratio 5:2:4:3. If C gets ₹1,000 more than D, what is B’s share?
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Correct answer: (C) ₹2,000
1 marks · 2023 · Set A
Question 6
A shopkeeper gives a 5% discount on a watch’s marked selling price. At a 6% discount, his profit would be ₹15 less. What is the marked selling price?
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Correct answer: (B) ₹1,500
1 marks · 2023 · Set A
Question 7
Three numbers are in the ratio 3:4:5. The largest plus the smallest equals the middle number plus 52. What is the smallest number?
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Correct answer: (B) 39
1 marks · 2023 · Set A
Question 8
If 2^(2n−1) = 1/8^(n−3), what is n?
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Correct answer: (B) 2
1 marks · 2023 · Set A
Question 9
Which photoelectric device is most suitable for digital applications?
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Correct answer: (A) Photovoltaic cell
1 marks · 2023 · Set A
Question 10
The critical mass of a fissionable material is
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Correct answer: (B) the minimum mass needed for a chain reaction
1 marks · 2023 · Set A
Question 11
Which gas is used to force the ripening of fruits?
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Correct answer: (B) Ethylene
1 marks · 2023 · Set A
Question 12
Which of the following has zero octane number?
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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
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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
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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 locations of genes on a chromosome is called
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Correct answer: (C) gene mapping
1 marks · 2023 · Set A
Question 16
A spore mother cell in bryophytes is
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Correct answer: (B) diploid
1 marks · 2023 · Set A
Question 17
In which year did the Government of India establish the National Green Tribunal for the protection of the environment and forests?
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Correct answer: (A) 2010
1 marks · 2023 · Set A
Question 18
Which Indian city started the first underwater metro?
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Correct answer: (E) None of the above
1 marks · 2023 · Set A
Question 19
Under India’s G20 Presidency, where was the Tourism Working Group Meeting held?
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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 won the silver medal in the National Under-17 Girls Wrestling Championship?
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Correct answer: (B) Nirjala
1 marks · 2023 · Set A
Question 21
Who won the 2022 International Booker Prize for the novel Tomb of Sand?
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Correct answer: (A) Geetanjali Shree and Daisy Rockwell
1 marks · 2023 · Set A
Question 22
Who was the Chief Guest at India’s 74th Republic Day?
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Correct answer: (B) Abdel Fattah El-Sisi
1 marks · 2023 · Set A
Question 23
In which Bihar district was the first floating solar power plant built?
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Correct answer: (A) Darbhanga
1 marks · 2023 · Set A
Question 24
Which of the following has received a GI tag in Bihar?
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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: a. Char; b. Kankar; c. Kayal; d. Mand. List II: 1. Punjab plain; 2. Delta; 3. Bangar; 4. Coastal plain. Select the correct code.
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Correct answer: (B) 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?
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Correct answer: (E) None of the above
1 marks · 2023 · Set A
Question 27
Likhapani Glacier is located in which Indian state?
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Correct answer: (A) Arunachal Pradesh
1 marks · 2023 · Set A
Question 28
The Magadha and Anga plains are parts of the
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Correct answer: (B) middle Ganga plain
1 marks · 2023 · Set A
Question 29
Which waterfall–river pair is not correctly matched?
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Correct answer: (D) More than one of the above
1 marks · 2023 · Set A
Question 30
Arrange these Indian seaports from north to south: 1. Kakinada; 2. Machilipatnam; 3. Nagapattinam; 4. Visakhapatnam.
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Correct answer: (B) 4, 1, 2, 3
1 marks · 2023 · Set A
Question 31
The 1954 Agreement on the Kosi Irrigation and Hydroelectricity Plan was signed between which two countries?
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Correct answer: (C) India and Nepal
1 marks · 2023 · Set A
Question 32
According to R. L. Singh’s classification scheme, Bihar falls in which climatic division?
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Correct answer: (B) Subhumid transitional
1 marks · 2023 · Set A
Question 33
At which session of the Indian National Congress was the resolution of ‘Purna Swaraj’ adopted?
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Correct answer: (B) Lahore Session, 1929
1 marks · 2023 · Set A
Question 34
What was an initial objective of the Kuka Movement in Punjab?
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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’?
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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?
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Correct answer: (A) Bihar and Bengal
1 marks · 2023 · Set A
Question 37
Which portfolio did Dr. Rajendra Prasad hold in the Interim Government of 1946?
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Correct answer: (C) Food and Agriculture
1 marks · 2023 · Set A
Question 38
Who particularly urged Gandhiji to visit Champaran to witness the miseries of the ryots?
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Correct answer: (B) Rajkumar Shukla
1 marks · 2023 · Set A
Question 39
On what date did the Muslim League observe the ‘Day of Deliverance’?
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Correct answer: (A) 22 December 1939
1 marks · 2023 · Set A
Question 40
Who laid the foundation stone of National College and Bihar Vidyapeeth?
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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
When a solid is converted from one shape to another, its volume will
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Correct answer: (B) remain unaltered
1 marks · 2023 · Set A
Question 42
The Cartesian coordinates of A, B and C are (1, −1), (3, −4) and (5, −7), respectively. What type of triangle is ΔABC?
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Correct answer: (E) None of the above
1 marks · 2023 · Set A
Question 43
A sweet seller has 420 Kaju Burfis and 150 Badam Burfis. They are to be stacked with the same number in each stack, using the least tray area. How many stacks are formed?
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Correct answer: (B) 19
1 marks · 2023 · Set A
Question 44
Let x + 2y + 4 = 0 and −4x + 2y − 3 = 0 be two straight lines. Then
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Correct answer: (E) None of the above
1 marks · 2023 · Set A
Question 45
Pritam takes 16 minutes to complete one lap of a circular sports field and Rana takes 20 minutes. Starting together from the same point in the same direction, after how long will they both meet at the starting point?
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Correct answer: (A) 80 minutes
1 marks · 2023 · Set A
Question 46
What is the largest number that divides 450, 577 and 704, leaving remainders 9, 10 and 11, respectively?
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Correct answer: (A) 63
1 marks · 2023 · Set A
Question 47
If α, β and γ are the zeros of x³ − 6x² − x + 30, what is αβ + βγ + γα?
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Correct answer: (B) −1
1 marks · 2023 · Set A
Question 48
If sin θ = m/n, what is (tan θ + 4)/(4 cot θ + 1)?
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Correct answer: (E) None of the above
1 marks · 2023 · Set A
Question 49
If the nth term of an arithmetic progression is 2n + 1, the sum of its first three terms is
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Correct answer: (B) 15
1 marks · 2023 · Set A
Question 50
Triangles ABC and DBC share base BC and lie on opposite sides of BC. If O is the intersection of diagonals AD and BC, then Area(ΔABC)/Area(ΔDBC) equals