36: Assertion (A) :
Insect resistant transgenic cotton has been produced by inserting Bt gene.
Reason (R) :
The Bt gene is derived from a bacterium.
(a) Both A and R are true, and R is the correct explanation of A
(b) Both A and R are true, but R is not a correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
37: The rainbow and the rainbow-like colours seen on a thin film of oil on a water surface are two phenomena. They are
(a) Similar in nature and both are due to refraction of light
(b) Different in nature and rainbow is due to interference of light, while colour of thin film is due to diffraction
(c) Similar in nature and both are due to interference of light
(d) Different in nature and rainbow is due to refraction, while colour of thin film is due to interference of light
38: The most important fishing grounds of the world are found in the regions where
(a) warm and cold atmospheric currents meet
(b) rivers drain out large amounts of fresh water into the sea
(c) warm and cold oceanic currents meet
(d) continental shelf is undulating
39: Match List I with List II and select the correct answer using the codes given below the lists :
List I List II
I. Potassium bromide (A) Fertiliser
II. Potassium nitrate (B) Photography
III. Potassium sulphate (C) Bakery
IV. Mono-potassium tartarate (D) Gunpowder
Codes:
(a) I-B, II-D, III-A, IV-C
(b) I-B, II-D, III-C, IV-A
(c) I-D, II-B, III-C, IV-A
(d) I-D, II-B, III-A, IV-C
40: Which of the following features are associated with the architecture of Tughlaq period? Select the correct answer using the codes
given below the features.
1. Sloping walls.
2. Deliberate attempt to combine the principles of the arch, the lintel and the beam in the buildings.
3. Placing the buildings especially the tombs on a high platform.
(a) 1 only
(b) 1 and 3
(c) 2 and 3
(d) 1 and 2