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General Knowledge on Chemistry

(Click on suggested Options to select the answer | Color Red means : Wrong & Green Means: Correct)
41. The process of decomposing organic waste in the presence of air is termed as
42. A mixture of sodium chloride and naphthalene can be separated by
43. Which one among the following polymers is used to make personal armour such as combat helmets, ballistic face masks, and ballistic vests?
44. Which one of the following pollutants contains in water due to modern agricultural practices lead to 'methemoglobinaemia' when combines with our blood haemoglobin?
45. Which one among the following polymers is used for making bullet-proof material?
46. A body is charged negatively. It implies that
  • A. it has lost some of its protons
  • B. it has lost some of its electrons
  • C. it has gained some electrons from outside
  • D. None of the above
  • Check Answer | Discussion
47. A pale blue gas with a fish-like odour restores the colour of a blackened lead painting . The gas is also used as rocket fuel. It Is
48. A person is weak, sterile and has very poor eyesight. These are the symptoms because of a pollutant
49. A polymer which is used for making ropes and carpet fibres is
50. The bleaching action of chlorine occurs in the presence of

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