51: Which of the following can be said as the 'Theory of Darwin'

(a) Survival of the fittest and struggle for existence

(b) Weak and strong always maintain a fixed proportion

(c) Different species do not arise by genetic mutation

(d) None of these
52: A cube of side 2 units is placed in a rectangular coordinate system with its centre at the origin. The coordinates of a set of 4 non-adjacent corners is

(a) (1, 1, 1); (-1, -1, -1); (1, -1, -1);

(b) (1, 1, 1); (-1, 1, 1); (1, -1, 1); (1, 1, -1)

(c) (1, 1, 1); (-1, -1, -1); (-1, 1, 1); (1, -1,-1)

(d) (-1, -1, -1); (1, 1, -1);. (-1, 1, 1); (-1, 1, -1)
53: Consider the following events during India's freedom struggle:

1. Chauri-Chaura Outrage

2. Minto-Morley Reforms

3. Dandi March

4. Montague-Chelmsford Reforms

Which one of the following is the correct chronological order of the events given above?

(a) 1-3-2-4
(b) 2-4-1-3
(c) 1-4-2-3
(d) 2-3-1-4
54: Which of the following discoveries is/are associated with Einstein?

(i) Theory of relativity

(ii) Quantum theory

(iii) Radio activity

(iv) Rocket propulsion

(a) (i) & (ii)

(b) (i), (ii) & (iii)

(c) (i), (ii) & (iv)

(d) (i) only
55: Consider the following statements:

1. The first telegraph line in India was laid between Kolkata (formerly Calcutta) and Diamond Harbour.

2. The first Export processing zone in India was set up in Kandla.

Which of the statements given above is/are correct?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2