Chemistry Questions Answers

• 64. The main chemical constituent of clay is ?

  1. aluminium silicate
  2. zeolites
  3. aluminium borosilicate
  4. silicon oxide

  Answer And Explanation

  Answer: Option A

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• 65. Which element found in all organic compounds ?

  1. carbon
  2. nitrogen
  3. calcium
  4. none of them

  Answer And Explanation

  Answer: Option A

  Explanation:

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• 66. Alloys made with mercury as one metal are called ?

  1. mixtures
  2. emulsions
  3. solders
  4. amalgams

  Answer And Explanation

  Answer: Option D

  Explanation:

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• 67. All noble gases are ?

  1. colourless
  2. colourless
  3. colourless and odourless
  4. colourless and but have odour

  Answer And Explanation

  Answer: Option C

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• 68. What is the hardest form of carbon ?

  1. coke
  2. graphite
  3. charcoal
  4. diamond

  Answer And Explanation

  Answer: Option D

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• 69. What is hottest part of the gas flame is called ?

  1. blue zone
  2. luminous zone
  3. dark zone
  4. non-luminous zone

  Answer And Explanation

  Answer: Option D

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• 70. Atomic number of an element gives

  1. the number of nucleons in its atom
  2. the number of electrons in its atom
  3. the weight of the atom of the element
  4. the total number of elementary particles in its atom

  Answer And Explanation

  Answer: Option B

  Explanation:

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