31. Which one gives a mixture of hydrocarbons on halogenations ?
(A) Ethane
(B) Ethyl alcohol
(C) Ethene
(D) Ethyne
(A) Ethane
(B) Ethyl alcohol
(C) Ethene
(D) Ethyne
32. Baeyer’s test shows the presence of ?
(A) A double bond
(B) A triple bond
(C) Both A and B
(D) No bond
(A) A double bond
(B) A triple bond
(C) Both A and B
(D) No bond
33. Which one is the least reactive ?
(A) Propane
(B) Ethene
(C) Ethyne
(D) Ethane
(A) Propane
(B) Ethene
(C) Ethyne
(D) Ethane
34. Ethane reacts with chlorine in the presence of ?
(A) Sunlight
(B) Water
(C) Carbon tetra chloride
(D) Ether
(A) Sunlight
(B) Water
(C) Carbon tetra chloride
(D) Ether
35. ______________ is a factor related to blood clotting.
(A) Vitamin K
(B) Vitamin A
(C) Vitamin C
(D) Vitamin E
(A) Vitamin K
(B) Vitamin A
(C) Vitamin C
(D) Vitamin E
36. The coldest region in atmosphere is ?
(A) Mesopause
(B) Stratosphere
(C) Tropopause
(D) Stratopause
(A) Mesopause
(B) Stratosphere
(C) Tropopause
(D) Stratopause
37. The freezing point of water is ___________ celcius.
(A) 1
(B) 2
(C) 0
(D) 3
(A) 1
(B) 2
(C) 0
(D) 3
38. The total volume of water present on earth surface is ?
(A) 1.3 Trillion KM3
(B) 1.7 KM3
(C) 1.33 Million KM3
(D) 1.386 Billion KM3
(A) 1.3 Trillion KM3
(B) 1.7 KM3
(C) 1.33 Million KM3
(D) 1.386 Billion KM3
39. The vital function of protoplasm is due to the presence of ?
(A) Water
(B) Fats
(C) Minerals
(D) Calcium
(A) Water
(B) Fats
(C) Minerals
(D) Calcium
40. The quantity of fresh water present on eat is only about ?
(A) 2.5%
(B) 0.04%
(C) 2.2%
(D) 3.6%
(A) 2.5%
(B) 0.04%
(C) 2.2%
(D) 3.6%