General Knowledge on Chemistry

(Click on suggested Options to select the answer \| Color Red means : Wrong & Green Means: Correct)
151. Vermicompost is a/an A. inorganic fertilizer B. toxic substance C. organic bio fertilizer D. synthetic fertilizer Check Answer \| Discussion 152. The purity of 14 carat gold is A. 14.6% B. 30% C. 58.4% D. 75.5% Check Answer \| Discussion 153. Chromium oxide is used as an ingredient in paints to obtain A. green colour B. blue colour C. red colour D. violet colour Check Answer \| Discussion 154. Biogas consists of mainly A. methane B. ethane C. butane D. carbon dioxide Check Answer \| Discussion 155. The coil in a heater is made of A. nichrome B. tungsten C. copper D. iron Check Answer \| Discussion 156. Which one of the following is used to slow down the speed of the neutrons in the nuclear reactor ? A. Controlling rod B. Moderator C. Coolant D. Accelerator Check Answer \| Discussion 157. The bond which is present between water molecules is A. electrovalent bond B. hydrogen bond C. vander Waals' bond D. covalent bond Check Answer \| Discussion 158. The most of the mass of the atom can be found in A. electrons B. charges C. nucleus D. electron cloud Check Answer \| Discussion 159. Which one among the followingis used in making lead pencils? A. Charcoal B. Graphite C. Coke D. Carbon black Check Answer \| Discussion 160. Which one of the following is a major constituent of biogas? A. Carbon dioxide B. Methane C. Hydrogen D. Nitrogen dioxide Check Answer \| Discussion
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General Knowledge on Chemistry

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