Page 373 - General Knowledge

GENERAL KNOWLEDGE 2019

C. Tin
D. Bismuth

69. How many parts are of other metals in a 17 carat Gold?
A. 3
B. 5
C. 7
D. 9

70. Which among the following does not come under carbon Group of Periodic Table?
A. silicon
B. germanium
C. tin
D. selenium

71. Which among the following is not correctly matched?
A. Sodium: Natrium
B. Pottassium : Kalium
C. Mercury :Hydrargyrum
D. Arsenic : Stibium

72. The chemical oxygen demand COD test is commonly used to measure which of the
following?
A. amount of organic compounds in water
B. amount of oxygen in water
C. amount of oxygen in a chemical
D. amount of oxygen used in a oxygenation process

73. Which among the following is an organic mineral?
A. Amber
B. Hornblende
C. Angite
D. Analcime

74. Liming is the application of calcium and magnesium rich materials to soil in various forms,
including marl, chalk, limestone, or hydrated lime. What is the purpose of liming?
A. Increase the Soil pH
B. Increase the bacteria activity
C. Both A & B
D. Decrease the bacterial activity

75. Who among the following established that genetic code of all organisms is spelled out in
three-letter words, each set of three nucleotides codes for a specific amino acid?
A. Hargobind Khorana
B. Barbara McClintock
C. Theodor O. Diener
D. Joseph L. Goldstein

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