What process is involved in achieving green hydrogen?
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Correct answer: (A) Electrolysis Green hydrogen is made by the electrolysis of water with renewable electricity—the water splits into H₂ and O₂. Since the power comes from the sun or the wind, there is no carbon emission.
1 marks · 2024 · Set E
Question 52
Which technology can be used to revive deceased individuals?
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Correct answer: (A) Deepfake Deepfake technology copies a person's face, voice and manner closely enough to make a video in which even someone dead can be shown speaking. AI is the wider field, and a chatbot is only a program that converses.
1 marks · 2024 · Set E
Question 53
In the 2024 cost-of-living index, which country ranks better than India?
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Correct answer: (B) Pakistan On the cost-of-living index of 2024, Pakistan among the countries given was placed better than India.
1 marks · 2024 · Set E
Question 54
Who supported Gandhiji in the 1917 Champaran Satyagraha in support of farmers?
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Correct answer: (B) Rajendra Prasad Rajendra Prasad was foremost among those who stood with Gandhiji in the Champaran Satyagraha of 1917; he later became India's first President. The movement was for peasants forced to grow indigo.
1 marks · 2024 · Set E
Question 55
Which is the moon-like planet?
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Correct answer: (A) Mercury Mercury's surface is pitted with craters like the Moon's and it has almost no atmosphere of its own, which is why it is called the moon-like planet. Mars has a thin atmosphere and the Earth a dense one.
1 marks · 2024 · Set E
Question 56
According to fossil evidence, where is the origin of humankind?
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Correct answer: (A) Rift Valley of Africa
1 marks · 2024 · Set E
Question 57
In India, dry-point settlements are found in:
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Correct answer: (A) Flood-prone areas Dry-point settlements grow where there is a danger of flood—people choose the higher, drier spots to build on.
1 marks · 2024 · Set E
Question 58
In which district of Bihar is paddy production maximum?
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Correct answer: (B) Rohtas Rohtas district grows the most paddy in Bihar and is called the state's rice bowl. The irrigation from the Son canal is the main reason.
1 marks · 2024 · Set E
Question 59
On which mountain is Tehran situated?
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Correct answer: (A) Alburz Tehran, the capital of Iran, lies at the foot of the Alburz range. The Zagros are in western Iran and the Makran in the south-east.
1 marks · 2024 · Set E
Question 60
The highest peak in the Eastern Ghats of India is:
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Correct answer: (C) Mahendragiri The highest peak of the Eastern Ghats is Mahendragiri, in Odisha. Anaimudi belongs to the Western Ghats and Kanchenjunga to the Himalaya.
1 marks · 2024 · Set E
Question 61
Which statement is not a valid reason for depletion of flora and fauna?
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Correct answer: (E) None of the above The spread of agriculture, large development projects, and grazing with the gathering of fuelwood are all genuine causes of the loss of flora and fauna. None of them is an invalid reason.
1 marks · 2024 · Set E
Question 62
In which district of Bihar is silk textile production maximum?
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Correct answer: (B) Bhagalpur Bhagalpur produces the most silk cloth in Bihar and is called the Silk City; its tussar silk is especially well known.
1 marks · 2024 · Set E
Question 63
Who was the Viceroy of India during the Jallianwala Bagh massacre?
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Correct answer: (B) Lord Chelmsford The Jallianwala Bagh massacre took place at Amritsar on 13 April 1919, when Lord Chelmsford was Viceroy. Lord Curzon (1899–1905) is remembered for the partition of Bengal and Lord Irwin (1926–31) for the Gandhi-Irwin Pact.
1 marks · 2024 · Set E
Question 64
Who was the first President of the Indian National Congress?
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Correct answer: (B) W. C. Bonnerjee The first session of the Indian National Congress was held at Bombay in 1885 and its first President was W. C. Bonnerjee.
1 marks · 2024 · Set E
Question 65
Who is also known as the Grand Old Man of India?
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Correct answer: (B) Dadabhai Naoroji Dadabhai Naoroji is called the Grand Old Man of India. With his theory of the drain of wealth he showed that British rule was carrying India's wealth away.
1 marks · 2024 · Set E
Question 66
Which of the following movements was started by M. K. Gandhi?
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Correct answer: (D) More than one of the above The Quit India Movement (1942) and the Non-Cooperation Movement (1920) were both begun by Mahatma Gandhi. The Swadeshi Movement started in 1905 against the partition of Bengal, before Gandhiji had even returned to India. So more than one option is correct.
1 marks · 2024 · Set E
Question 67
Who was the leader of the Bardoli Satyagraha?
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Correct answer: (A) Sardar Vallabhbhai Patel The Bardoli Satyagraha of 1928 was led by Vallabhbhai Patel. After that successful stand against the raised land revenue, the women there gave him the title ‘Sardar’.
1 marks · 2024 · Set E
Question 68
Who among the following was not associated with the Home Rule Movement?
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Correct answer: (E) None of the above Annie Besant, Bal Gangadhar Tilak and Sarojini Naidu were all associated with the Home Rule Movement, so ‘None of the above’ is the answer.
1 marks · 2024 · Set E
Question 69
Who founded the Bihar Provincial Congress Committee in 1920?
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Correct answer: (A) Dr. Rajendra Prasad The Bihar Provincial Congress Committee was founded in 1920 by Dr Rajendra Prasad, later the first President of India. Anugrah Narayan Sinha was his colleague, and Jayaprakash Narayan of a later generation.
1 marks · 2024 · Set E
Question 70
The All India Kisan Sabha was founded in Bihar in 1936 under whose leadership?
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Correct answer: (C) Swami Sahajanand Saraswati The All India Kisan Sabha was founded in 1936 and its first President was Swami Sahajanand Saraswati, who raised the peasant movement from Bihar.
1 marks · 2024 · Set E
Question 71
A digital circuit can be made by repeated use of the:
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Correct answer: (D) More than one of the above
1 marks · 2024 · Set E
Question 72
Which statement is correct for digital circuits?
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Correct answer: (E) None of the above
1 marks · 2024 · Set E
Question 73
Which of the following is an example of digital electronics?
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Correct answer: (D) More than one of the above
1 marks · 2024 · Set E
Question 74
An OR gate has 4 inputs. How many words will its truth table have?
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Correct answer: (C) 16
1 marks · 2024 · Set E
Question 75
When does a negative-level-triggered flip-flop change state?
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Correct answer: (A) When the clock is negative
1 marks · 2024 · Set E
Question 76
What is the result of 1010 AND 1100 in binary?
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Correct answer: (A) 1000
1 marks · 2024 · Set E
Question 77
What are the outputs of a half-adder circuit?
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Correct answer: (A) Sum and Carry
1 marks · 2024 · Set E
Question 78
Which of the following is a type of Read Only Memory (ROM)?
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Correct answer: (D) More than one of the above
1 marks · 2024 · Set E
Question 79
What is a PLA?
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Correct answer: (B) Programmable Logic Array
1 marks · 2024 · Set E
Question 80
How many select lines are required for an 8-to-1 multiplexer?
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Correct answer: (B) 3
1 marks · 2024 · Set E
Question 81
Convert decimal 1234 to binary, octal and hexadecimal. Which option correctly represents these conversions?
How many distinct binary search trees can be created from 4 distinct keys?
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Correct answer: (C) 14
1 marks · 2024 · Set E
Question 98
Assume an integer is 4 bytes. What is the output of this program? #include <stdio.h> int main(){ int i=5,j=10,k=15; printf("%d ",sizeof(k /= i+j)); printf("%d",k); return 0; }
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Correct answer: (C) 4 15
1 marks · 2024 · Set E
Question 99
Which statement about Big-O notation is true?
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Correct answer: (B) It represents the upper bound of an algorithm’s runtime
1 marks · 2024 · Set E
Question 100
Which of the following is not a step in the Divide and Conquer algorithm?