821: The following persons came to India at one time or another :
I. Fa-Hien
II. I-Tsing
III. Megasthenese
IV. Hieun-Tsang
The correct chronological sequence of their visits is :
(a) III, I, II, IV
(b) III, I, IV, II
(c) I, III, II, IV
(d) I, III, IV, II
822: A and B are two fixed points in a field. A cyclist C moves such that ACB is always a right angle. In this context, which one of the following statements is correct?
(a) The path followed by the cyclist is an ellipse
(b) The path followed by the cyclist is a circle
(c) The path followed by the cyclist is an exponential curve
(d) This type of motion is not possible
823: Consider the following statements about acetylene :
I. It is used in welding industry.
II. It is raw material for preparing plastics.
III. It is easily obtained by mixing silicon carbide and water.
Of these statements :
(a) I and II are correct
(b) I and III are correct
(c) II and III are correct
(d) I, II and III are correct
824: Consider the following events in Indian Freedom Movement :
1. Singh Sabha Movement
2. Quit India Movement
3. Dandi March
4. Gurdwara Reform Movement
The correct chronological sequence of these events is
(a) 1, 4, 3, 2
(b) 4, 1, 2, 3
(c) 2, 3, 4, 1
(d) 3, 2, 1, 4
825: Consider the following statements:
1. Non-function of lachrymal gland is an important symptom of deficiency of Vitamin A.
2. Deficiency of Vitamin B1 can lead to indigestion and heart enlargement.
3. Vitamin C deficiency can lead to pain in the muscles.
4. Deficiency of Vitamin D causes increased loss of Ca++ in urine.
Which of the statements given above are correct?
(a) 1 and 2
(b) 2, 3 and 4
(c) 1, 3 and 4
(d) 1, 2, 3 and 4