3441: Optical fibre works on the principle of

(a) total internal reflection

(b) refraction

(c) scattering

(d) interference
3442: In the November 1998 Composite Dialogue Process between India and Pakistan, three contentious issues listed below as 1, 2 and 3 were discussed.

Contentious Issues

1. Disengagement of troops
2. Settlement of boundary dispute
3. Sharing river water

Match the issues with the areas marked in the map as A, B and C and select the correct answer using the codes give below :

Codes:

(a) A-2, B-1, C-3
(b) A-2, B-3, C-1
(c) A-1, B-3, C-2
(d) A-3, B-2, C-1
3443: Which of the following is not an element of the bone?

(a) Calcium

(b) Phosphorus

(c) Carbon

(d) Oxygen
3444: Which one of the following soil types of India is rendered infertile by the presence of excess iron ?

(a) Desert sand

(b) Alluvial

(c) Podzolic

(d) Lateritic
3445: Match List I with List II and select the correct answer using the codes given below the Lists :

List I List II

(Bone) (Name)

I. Breast-bone (A) Clavicle
II. Collar-bone (B) Patella
III. Knee-cap (C) Scapula
IV. Shoulder blade (D) Sternum

Codes:

(a) I-D, II-A, III-C, IV-B
(b) I-A, II-D, III-C, IV-B
(c) I-A, II-D, III-B, IV-C
(d) I-D, II-A, III-B, IV-C