1521: Which of the following is a perception without stimuli?

(a) Hallucination

(b) Illusion

(c) Claustrophobia

(d) None of these
1522: Consider the following pairs: Vitamin Deficiency disease

1. Vitamin C : Scurvy
2. Vitamin D : Rickets
3. Vitamin E : Night blindness

Which of the pairs given above is/are correctly matched?

(a) 1 and 2 only
(b) 3 only
(c) 1, 2 and 3
(d) None
1523: An air bubble in water will act like a

(a) convex mirror

(b) convex lens

(c) concave mirror

(d) concave lens
1524: Which of the following parties were established by Dr. B. R. Ambedkar?

1. The Peasants and Workers Party of India

2. All India Scheduled Castes Federation

3. The Independent Labour Party

Select the correct answer using the codes given below :

(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
1525: The speed of revolution of the earth in its orbit round the sun is

(a) Same throughout the year

(b) Greatest when the earth is nearest to the sun

(c) Greatest when the earth is farthest from the sun

(d) Least when the earth is nearest to the sun