Page 372 - General Knowledge

GENERAL KNOWLEDGE 2019

61. Which among the following can be used as a preservative in Tomato Juice?
A. Sodium Chloride
B. Sodium carbonate
C. Sodium benzoate
D. Sodium Lauril Sulphate

62. Which among the following gas has lowest auto-ignition temperature?
A. Methane
B. Hydrogen
C. Ethylene
D. Carbon Di Sulphide

63. Which among the following is the most stable form of carbon under standard conditions?
A. Charcoal
B. Graphite
C. Diamond
D. Amorphous carbon

64. Which among the following statement is correct?
A. Both Melting point & Boiling Point of Heavy water are higher than normal water
B. Both Melting point & Boiling Point of Heavy water are lower than normal water
C. Melting point is higher and Boiling Point is lower than normal water
D. Melting point is lower and Boiling Point is higher than normal water

65. Which among the following gives hissing sound when dissolved into H2O?
A. CaCO2
B. Ca(OH)2
C. CaO
D. CaCl2

66. What is the number of naturally occurring Halogens in the periodic table?
A. 3
B. 4
C. 5
D. 6

67. Which among the following is the lowest atomic number element without any stable
isotopes?
A. Technetium
B. Molybdenum
C. Ruthenium
D. Niobium

68. Which among the following is the main constituent of malleable metal alloy Pewter ?
A. Copper
B. Zinc

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