What message was sent by the Chandrayaan-2 lunar orbiter to Chandrayaan-3’s lander module when it established contact with it in August 2023?
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Correct answer: (C) “Welcome, buddy” When contact was made with the lander of Chandrayaan-3, the orbiter of Chandrayaan-2 sent the message ‘Welcome, buddy’. The older orbiter thus became a communication link for the new mission.
1 marks · 2023 · Set A
Question 52
Name the former President of China who crushed the pro-democracy movement in 1989.
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Correct answer: (B) Yang Shangkun During the pro-democracy movement of 1989 the President of China was Yang Shangkun (1988–1993), and martial law was declared over his signature. Jiang Zemin became President in 1993, after the movement. The Commission's final key gives (C) Jiang Zemin, but the question asks for the President, and in 1989 that office was Yang Shangkun's; option (B) is shown here for that reason.
1 marks · 2023 · Set A
Question 53
Who was elected for a second term as Ireland’s Prime Minister?
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Correct answer: (C) Leo Varadkar Leo Varadkar was elected Prime Minister (Taoiseach) of Ireland for a second term. Sanna Marin led Finland and Robert Abela Malta.
1 marks · 2023 · Set A
Question 54
The African Union was made a permanent member at the G-20 Summit held in India. Who is the Chairman of the African Union?
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Correct answer: (A) Azali Assoumani The African Union was given permanent membership at the G20 summit in New Delhi in 2023; its chairman at the time was Azali Assoumani, President of the Comoros.
1 marks · 2023 · Set A
Question 55
Arrange the following physiographic units of India in ascending order by geographical area: 1. Central Highlands 2. Great Plains 3. Coastal Plains 4. Northern Mountains. Select the correct answer using the codes given below.
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Correct answer: (A) 3, 1, 2, 4 Arranged in ascending order of area, that is from the smallest unit to the largest, the correct order among the options given is 3, 1, 2, 4.
1 marks · 2023 · Set A
Question 56
Arrange the following ranges from north to south: 1. Ladakh 2. Karakoram 3. Pir Panjal 4. Zanskar. Select the correct answer using the codes given below.
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Correct answer: (B) 2, 1, 4, 3 From north to south the order is Karakoram, Ladakh, Zanskar and Pir Panjal, so the correct answer is 2, 1, 4, 3.
1 marks · 2023 · Set A
Question 57
During the monsoon season in India, most cyclones have their origin
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Correct answer: (B) between 10° N and 15° N latitude Most cyclones of the Indian monsoon season form in the Bay of Bengal between 10° N and 15° N, where the sea temperature and the humidity are both favourable.
1 marks · 2023 · Set A
Question 58
Which of the following areas is not landslide-prone?
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Correct answer: (B) Eastern Ghats Landslides happen where the slopes are steep and the rain heavy—the Himalaya and the Western Ghats are such. The Eastern Ghats are lower, broken and of gentler slope, so the risk there is least.
1 marks · 2023 · Set A
Question 59
Which of the following coasts of India is most affected by violent tropical cyclones?
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Correct answer: (B) Coromandel The Coromandel coast faces the Bay of Bengal, where most tropical cyclones form, so it is the most affected. The Malabar and Konkan coasts lie towards the Arabian Sea, where cyclones are fewer.
1 marks · 2023 · Set A
Question 60
When running water cuts through clayey soils and makes deep channels, it leads to
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Correct answer: (A) gully erosion When running water cuts through clayey soil and makes deep channels it is called gully erosion, and such land is known as badland. In sheet erosion the top layer is washed away evenly instead.
1 marks · 2023 · Set A
Question 61
Which of the following receives heavy rainfall in October and November?
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Correct answer: (B) Coromandel Coasts In October and November the monsoon retreats, and the winds that cross the Bay of Bengal bring heavy rain to the Coromandel coast, the eastern coast of Tamil Nadu. In the rest of India the rains are nearly over by then.
1 marks · 2023 · Set A
Question 62
Cultivation of fruits and vegetables is called
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Correct answer: (C) horticulture Growing fruits and vegetables is called horticulture. Growing flowers is floriculture, and farming in general is agriculture.
1 marks · 2023 · Set A
Question 63
Who provided leadership in the districts of Patna, Ara and Shahabad during the Revolt of 1857 in Bihar?
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Correct answer: (C) Kunwar Singh The revolt of 1857 in the Patna, Ara and Shahabad region of Bihar was led by Kunwar Singh of Jagdishpur. Raj Kumar Shukla belonged to the Champaran Satyagraha, a much later time.
1 marks · 2023 · Set A
Question 64
The Partition of Bengal was made effective on
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Correct answer: (C) 16 October, 1905 The partition of Bengal announced by Lord Curzon came into effect on 16 October 1905. People marked that day by tying rakhis to show unity, and the Swadeshi Movement gathered force.
1 marks · 2023 · Set A
Question 65
The Quit India Resolution was adopted by the Congress in Bombay on
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Correct answer: (B) 8 August, 1942 The Quit India resolution was passed by the Congress at the Gowalia Tank maidan in Bombay on 8 August 1942, and Gandhiji gave the call ‘Do or Die’. The next day, 9 August, the senior leaders were arrested.
1 marks · 2023 · Set A
Question 66
The British ruled India for a long period due to the
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Correct answer: (C) policy of Divide and Rule The British followed a policy of divide and rule, widening differences of religion, caste and princely state so that Indians could not resist together. That was the main reason their rule lasted so long.
1 marks · 2023 · Set A
Question 67
Queen Victoria’s Proclamation was issued on which of the following dates?
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Correct answer: (C) 1 November, 1858 After the revolt of 1857 Queen Victoria's Proclamation was read out by Lord Canning at Allahabad on 1 November 1858. With it the Company's rule ended and India passed to the British Crown.
1 marks · 2023 · Set A
Question 68
Which of the following statements is/are correct?
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Correct answer: (D) More than one of the above Raja Ram Mohan Roy was a pioneer of modern education, Swami Dayanand gave the call to return to the Vedas, and Vivekananda took part in the Parliament of World Religions at Chicago in 1893—more than one statement is correct.
1 marks · 2023 · Set A
Question 69
Who among the following became India’s unofficial Ambassador to England?
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Correct answer: (B) Dadabhai Naoroji Dadabhai Naoroji lived in England for many years, building opinion there in India's favour, and was even elected to the British Parliament—which is why he was called India's unofficial Ambassador.
1 marks · 2023 · Set A
Question 70
Who described the Government of India Act, 1935 as a ‘Charter of Slavery’?
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Correct answer: (E) None of the above It was Jawaharlal Nehru who called the Government of India Act, 1935 a ‘Charter of Slavery’. All three names given are wrong, so the answer is ‘None of the above’.
1 marks · 2023 · Set A
Question 71
Laser light beamed at the moon takes 2.56 seconds to return after reflection at the moon’s surface. The radius of the lunar orbit around the earth would be
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Correct answer: (A) 3.84 × 10⁵ km
1 marks · 2023 · Set A
Question 72
The technique used to measure large time intervals is
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Correct answer: (B) radioactive dating
1 marks · 2023 · Set A
Question 73
The voltage across a lamp is V = (6.0 ± 0.1) volt, and current passing through it is I = (4 ± 0.2) ampere. Considering the power consumed P = VI, the power consumed by the electric lamp within the error limit would be
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Correct answer: (A) (24 ± 1.6) watt
1 marks · 2023 · Set A
Question 74
The nearest star to our solar system is 4.29 light-years away. How much is this distance in parsecs?
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Correct answer: (B) 1.323 parsecs
1 marks · 2023 · Set A
Question 75
A capacitor of capacitance C = (2.0 ± 0.1) μF is charged to a voltage V = (20 ± 0.5) volts. The total charge on the capacitor within the error would be
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Correct answer: (A) (40.0 ± 3.0) × 10⁻⁶ C
1 marks · 2023 · Set A
Question 76
Which of the following is the most precise device for measuring length?
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Correct answer: (C) An optical instrument that can measure length within a wavelength of light
1 marks · 2023 · Set A
Question 77
For photoelectric emission, tungsten requires light of wavelength 2300 Å. If light of wavelength 1800 Å is incident on it, the emission
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Correct answer: (A) takes place
1 marks · 2023 · Set A
Question 78
The wavelength of a photon of energy 1 keV is 1.24 × 10⁻⁹ m. The frequency of a 1 MeV photon would be
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Correct answer: (B) 2.4 × 10²⁰
1 marks · 2023 · Set A
Question 79
The small unit of area used to measure the area of a nuclear cross-section is
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Correct answer: (B) Barn
1 marks · 2023 · Set A
Question 80
Two trains, each travelling at 30 km/hr, are headed towards each other on the same track. A bird that can fly at 60 km/hr flies from the front of one train towards the other when they are 60 km apart. On reaching the other train, the bird flies back to the first. The total distance the bird travels before the trains collide would be
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Correct answer: (A) 60 km
1 marks · 2023 · Set A
Question 81
The displacement of a particle moving along the x-axis is X = 18t + 15t². The instantaneous velocity at t = 25 s would be
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Correct answer: (E) None of the above
1 marks · 2023 · Set A
Question 82
Monochromatic light of frequency 6.0 × 10¹⁴ hertz is produced by a laser. If the power emitted is 2.0 × 10⁻³ watt, the number of photons emitted per second by the laser is
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Correct answer: (B) 5.0 × 10¹⁵
1 marks · 2023 · Set A
Question 83
The speed measured by the speedometer of a scooter is
See answer
Correct answer: (B) instantaneous
1 marks · 2023 · Set A
Question 84
The position of an object is given by x = 2t² + 3t. Its motion would be
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Correct answer: (B) non-uniform
1 marks · 2023 · Set A
Question 85
The position of a body is given by x = A sin ωt. The time at which displacement is maximum would be
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Correct answer: (B) π/(2ω)
1 marks · 2023 · Set A
Question 86
If the change in velocity of a body is equal for equal intervals of time, it is said to move with
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Correct answer: (A) uniform acceleration
1 marks · 2023 · Set A
Question 87
A particle moving in a straight line has displacement x = 10t + 15t², where x is in metres and t is in seconds. Its average acceleration would be
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Correct answer: (E) None of the above
1 marks · 2023 · Set A
Question 88
When a moving object covers equal distances in equal times, its acceleration is said to be
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Correct answer: (A) zero
1 marks · 2023 · Set A
Question 89
A ball is thrown vertically upward with a velocity of 20 m/s from the top of a building. If g = 10 m/s², how high will the ball rise?
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Correct answer: (A) 20 m
1 marks · 2023 · Set A
Question 90
A car moving at 50 km/hr can be stopped by brakes after covering 6 m. What would be the minimum stopping distance if the car is moving at 100 km/hr?
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Correct answer: (A) 24 m
1 marks · 2023 · Set A
Question 91
A cricket ball is thrown at 28 m/s in a direction 30° above the horizontal. The maximum height attained by the ball would be
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Correct answer: (A) 10 m
1 marks · 2023 · Set A
Question 92
A rocket of mass 0.1 kg has fuel of mass 0.02 kg, which it burns in 3 seconds. It starts from rest on a smooth horizontal track and reaches 20 m/s after the fuel has burned out. The thrust on the rocket due to the burning fuel would be
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Correct answer: (B) 2/3 newton
1 marks · 2023 · Set A
Question 93
A block of mass 8 kg, initially at rest, is pulled to the right along a frictionless horizontal surface by a constant force of 12 N. Its velocity after it has moved 3 metres would be
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Correct answer: (A) 3 m/s
1 marks · 2023 · Set A
Question 94
A small pebble of mass 1 gram falling from a cliff 1 km high hits the ground at 50 m/s. The work done by the resistive force would be
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Correct answer: (B) −8.75 joules
1 marks · 2023 · Set A
Question 95
A body of mass m is released from rest from the top of a smooth inclined plane of height h. Just before it hits the ground, its speed is
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Correct answer: (B) (2gh)^(1/2)
1 marks · 2023 · Set A
Question 96
If a spring force is expressed as the difference between the initial and final values of the potential energy function, then the spring force is said to be
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Correct answer: (A) conservative
1 marks · 2023 · Set A
Question 97
The principle of conservation of mechanical energy states that if only conservative forces do work, the mechanical energy
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Correct answer: (A) remains constant
1 marks · 2023 · Set A
Question 98
A block of mass m is extended to position xₘ and released from rest. If its velocity is maximum at a point x between −xₘ and +xₘ, then x would be equal to
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Correct answer: (A) zero
1 marks · 2023 · Set A
Question 99
A person trying to lose weight lifts a 100 kg mass up to 0.5 metre, 1000 times. If the potential energy lost each time he lowers the mass is dissipated, the work done against gravity is
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Correct answer: (E) None of the above
1 marks · 2023 · Set A
Question 100
A child of mass 20 kg rides on a curved slide of height 6 metres, starting from rest at the top. The child’s speed at the bottom would be