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General Knowledge on Chemistry | GK Test on Chemistry Page 23
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Chemistry

General Knowledge on Chemistry

(Click on suggested Options to select the answer | Color Red means : Wrong & Green Means: Correct)

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221. The hardest form of carbon is
222. The method that cannot be used for removing permanent hardness of water is
223. The inexpensive and commonly used variety of glass is called soda glass. It is called so because
  • A. was used initially for making bottles of soda(carbonated drink)
  • B. is made using soda(sodium carbonate)
  • C. was initially used for storing sodium carbonate
  • D. is made using soda lime
  • Check Answer | Discussion
224. The Latin word formica means ant. The name formic acid is derived from this Latin word because
  • A. this acid, in ancient times, was used to eliminate ant-hills
  • B. this corrosive acid is secreted by ants to drive away their enemies
  • C. this acid was first obtained by the distillation of ants
  • D. ants are attracted by the odour of this acid
  • Check Answer | Discussion
225. The mass number of an atom is equal to
  • A. the number of protons
  • B. the number of protons and electrons
  • C. the number of nucleons
  • D. the number of neutrons
  • Check Answer | Discussion
226. The high reactivity of fluorine is due to
  • A. its high electro negativity
  • B. small size of fluorine atom
  • C. availability of d-orbitals
  • D. strong F - F bond
  • Check Answer | Discussion
227. The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is
228. The method of concentrating the ore which makes use of the difference in density between ore and impurities is called
229. The inherited traits of an organism are controlled by
230. The mass number of a nucleus is
  • A. always less than its atomic number
  • B. the sum of the number of protons and neutrons present in the nucleus
  • C. always more than the atomic weight
  • D. a fraction
  • Check Answer | Discussion

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