71: Who, among the following, was known as a "Nirguna" reformer ?
(a) Chaitanya
(b) Kabir
(c) Surdas
(d) Tulsidas
72: Which one of the following stars is nearest to the earth ?
(a) Polaris
(b) Alpha Centauri
(c) Sun
(d) Sirius
73: 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
74: Which of the following Five-Year Plans was terminated one year before its completion?
(a) Second
(b) Third
(c) Fourth
(d) Fifth
75: Which one of the following processes in the bodies of living organisms is a digestive process ?
(a) Breakdown of proteins into amino acids
(b) Breakdown of glucose into CO2 and H2O
(c) Conversion of glucose into glycogen
(d) Conversion of amino acids into proteins