2171: In an electronic watch, the component corresponding to pendulum of a pendulum clock is a
(a) transistor
(b) crystal oscillator
(c) diode
(d) balance wheel
2172: With reference to the Indian freedom struggle, which one of the following statements is not correct?
(a) Hakim Ajmal Khan was one of the leaders to start a nations list and militant Ahrar movement
(b) When the Indian National Congress was formed, Sayyid Ahmad Khan opposed it
(c) The All-India Muslim League which was formed in 1906 vehemently opposed the partition of Bengal and separate electorates
(d) Maulana Barkaullah and Maulana Obeidullah Sindhi were among those who formed a Provisional Government of India in Kabul
2173: Which one of the following pairs of metals constitutes the lightest metal and the heaviest metal, respectively?
(a) Lithium and mercury
(b) Lithium and osmium
(c) Aluminium and osmium
(d) Aluminium and mercury
2174: In the context of digital technologies for entertainment, consider the following statements:
1. In Augmented Reality (AR), a simulated environment is created and the physical world is completely shut out.
2. In Virtual Reality (VR), images generated from a computer are projected onto real-life objects or surroundings.
3. AR allows individuals to be present in the world and improves the experience using the camera of smart-phone or PC.
4. VR closes the world, and transposes an individual, providing complete immersion experience.
Which of the statements given above is/are correct?
(a) 1 and 2 only
(b) 3 and 4
(c) 1, 2 and 3
(d) 4 only
2175: With reference to India, consider the following Central Acts:
1. Import and Export (Control) Act, 1947
2. Mining and Mineral Development (Regulation) Act, 1957
3. Customs Act, 1962
4. Indian Forest Act, 1927
Which of the above Acts have relevance to/bearing on the biodiversity conservation in the country?
(a) 1 and 3 only
(b) 2, 3 and 4 only
(c) 1, 2, 3 and 4
(d) None of the above Acts