1786: Retina in the eyes acts as a ........ in the camera.

(a) Lens

(b) Shutter

(c) Film

(d) None of these
1787: The product life cycle from inception to demise is shown in the graph. Match List I with List II and select the correct answer using the codes given below the Lists :

Codes:

(a) I-A, II-D, III-B, IV-C
(b) I-A, II-D, III-C, IV-B
(c) I-D, II-A, III-B, IV-C
(d) I-D, II-A, III-C, IV-B
1788: Which one of the following is not an essential micronutrient for plants ?
(a) Boron
(b) Zinc
(c) Sodium
(d) Copper
1789: Soils of Western Rajasthan have a high content of

(a) Aluminium

(b) Calcium

(c) Nitrogen

(d) Phosphorus
1790: Whose autobiography is the book "My Music, My Life"?

(a) Pandit Ravi Shankar
(b) Ustad Amjad Ali Khan
(c) Pandit Shiv Kumar Sharma
(d) Ustad Zakir Hussain