46: The trees of spruce, fir, pine, etc. are found in which of the following natural regions of the earth?
(a) Laurentian type
(b) Alpine type
(c) Taiga type
(d) Siberian type
47: Match List I with List II and select the correct answer by using codes given below the lists :
List I List II
I. Vitamin : (A) Pepsin
II. Enzyme : (B) Carotene
III. Hormone : (C) Keratin
IV. Protein : (D) Progesterone
Codes:
(a) I - A, II - B, III - C, IV - D
(b) I - B, II - A, III - D, IV - C
(c) I - B, II - A, III - C, IV - D
(d) I - A, II - B, III - D, IV - C
48: If water contracts on freezing, which of the following would happen?
(a) Icebergs will completely float on the surface of water
(b) Ice would become more dense
(c) Lakes would freeze from top to bottom
(d) Rocks will crack due to freezing or internal water
49: Match List I with List II and select the correct answer using the codes given below the lists :
List I List II
(Minerals) (Mining area)
I. Graphite (A) Bellary
II. Lead (B) Didwana
III. Salt (C) Rampa
IV. Silver (D) Zawar
Codes:
(a) I-C, II-D, III-A, IV-B
(b) I-A, II-D, III-B, IV-C
(c) I-C, II-A, III-D, IV-B
(d) I-B, II-C, III-A, IV-D
50: Consider the following statements:
1. Molasses is a by-product of sugar production process.
2. Bagasse obtained in the sugar mills is used as a fuel in the boilers to generate steam for the sugar factories.
3. Sugar can only be produced from sugarcane as the raw material.
Which of these statement are correct?
(a) 1 and 2
(b) 2 and 3
(c) 1 and 3
(d) 1, 2 and 3