3471: Which one of the following is the correct chronological order of the formation as full States of the Indian Union ?
(a) Sikkim-Arunachal Pradesh-Nagaland-Haryana
(b) Nagaland-Haryana-Sikkim-Arunachal Pradesh
(c) Sikkim-Haryana-Nagaland-Arunachal Pradesh
(d) Nagaland-Arunachal Pradesh-Sikkim-Haryana
3472: The substitution of steel for wooden ploughs in agricultural production is an example of
(a) labour-augmenting technological progress
(b) capital-augmenting technological progress
(c) capital-reducing technological progress
(d) None of the above
3473: What is the tissue culture?
(a) Preparation of fragments of the cells of organism for biochemical examination
(b) Japanese culture
(c) Name given to a special type of surgery
(d) None of the above
3474: The Ryotwari Settlement was introduced by the British in the
(a) Bengal Presidency
(b) Madras Presidency
(c) Bombay Presidency
(d) Madras and Bombay Presidencies
3475: With reference to 'fuel cells' in which hydrogen-rich fuel and oxygen are used to generate electricity. Consider the following statements :
1. If pure hydrogen is used as a fuel, the fuel cell emits heat and water as by-products.
2. Fuel cells can be used for powering buildings and not for small devices like laptop computers.
3. Fuel cells produce electricity in the form of Alternating Current (AC).
Which of the statements given above is / are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3