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Non-Metals and Their Compounds

312 MCQ questions with answers and explanations · page 3 of 13

Test yourself▶ 25 question test▶ 50 question test

Q51. Carbon atoms have ______

  1. A6e. 6p and 12n
  2. B6e. 6p and 6n
  3. C6e. 12p and 6n
  4. D12e, 6p and 6n
Show answer & explanation

Answer: B) 6e. 6p and 6n

Q52. Which of the following elements forms the most compounds with hydrogen?

  1. Aoxygen
  2. Bnitrogen
  3. CCarbon
  4. DTin
Show answer & explanation

Answer: C) Carbon

Q53. Different forms of the same chemical element are called—

  1. Aanion
  2. Bcation
  3. Cbuffer
  4. Dallotrope
Show answer & explanation

Answer: D) allotrope

Q54. The property due to which the same element is found in many forms is called

  1. Apolymerization
  2. Bisobar
  3. Cisotopes
  4. Dmismatch
Show answer & explanation

Answer: D) mismatch

Q55. 'Diamond' and 'Graphite' are allotropes of what?

  1. ASilicon
  2. BSelinian
  3. CCarbon
  4. DTin
Show answer & explanation

Answer: C) Carbon

Q56. Which of the following does not contain carbon?

  1. ADiamond
  2. Bgraphite
  3. CCoal
  4. DNone of these
Show answer & explanation

Answer: D) None of these

Q57. Which of the following substances is not an allotrope of carbon?

  1. ADiamond
  2. BGraphene
  3. Cfly ash
  4. DFullerene
Show answer & explanation

Answer: C) fly ash

Q58. Which of the following forms is an allotrope of Chiminster fullerene?

  1. APhosphorus
  2. BIron
  3. CCarbon
  4. DBoron
Show answer & explanation

Answer: C) Carbon

Q59. Which of the following statements is not correct?

  1. ABuckminsterfullerene is an allotrope of carbon
  2. BDiamond is a good conductor of electricity
  3. Cgraphite is a good conductor of electricity
  4. DEach carbon atom in graphite is bonded to three other carbon atoms.
Show answer & explanation

Answer: B) Diamond is a good conductor of electricity

Q60. Which of the following is a basic element?

  1. ASand
  2. BDiamond
  3. Cmarble
  4. DSugar
Show answer & explanation

Answer: B) Diamond

Q61. What is the pure form of carbon?

  1. ADiamond
  2. Bgraphite
  3. CCharcoal
  4. DFullerene
Show answer & explanation

Answer: A) Diamond

Q62. Which of the following is the hardest substance ever?

  1. Awakeminster fullerene
  2. BDiamond
  3. Cgraphite
  4. DIron
Show answer & explanation

Answer: B) Diamond

Q63. What is a carat in relation to a diamond?

  1. Aaccuracy
  2. BBurden
  3. CMass
  4. Ddensity
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Answer: B) Burden

Q64. Which of the following is not a form of carbon?

  1. ALampblack
  2. BHematite
  3. Cgraphite
  4. DCharcoal
Show answer & explanation

Answer: B) Hematite

Q65. Which of the following non-metals is a good conductor of electricity?

  1. Abromine
  2. Bgraphite
  3. CIodine
  4. DCrypton
Show answer & explanation

Answer: B) graphite

Q66. Which of the following is used in pencils?

  1. APhosphorus
  2. BCharcoal
  3. Cgraphite
  4. DSulphur
Show answer & explanation

Answer: C) graphite

Q67. The positive rod of a dry cell is—

  1. Acopper
  2. Bof graphite
  3. Cof zinc
  4. Dof brass
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Answer: B) of graphite

Q68. Which of the following is a good lubricant?

  1. Adiamond powder
  2. Bgraphite powder
  3. Cmolten carbon
  4. Dalloy of carbon and iron
Show answer & explanation

Answer: B) graphite powder

Q69. The moderator used in nuclear reactor is ____

  1. Aplain water
  2. Bgraphite
  3. CUranium
  4. DRadium
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Answer: B) graphite

Q70. What is determined by radiocarbon dating?

  1. Aof human age
  2. Bof the age of the Earth
  3. Cof the age of rocks
  4. Dof the age of the fossils
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Answer: D) of the age of the fossils

Q71. It is used to decolourise raw sugar_

  1. Awood charcoal
  2. BSugar Charcoal
  3. CAnimal Charcoal
  4. DCoconut Charcoal
Show answer & explanation

Answer: C) Animal Charcoal

Q72. By passing water vapour over red hot carbon, it is obtained ___

  1. Awater gas
  2. Bproducer gas
  3. CL.P.G.
  4. DCNG
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Answer: A) water gas

Q73. The property of catenation is strong in ............

  1. ACarbon
  2. BSulphur
  3. CSilicon
  4. Dnitrogen
Show answer & explanation

Answer: A) Carbon

Q74. The use of diamond as a jewel depends on which of its properties?

  1. Ahigh value
  2. Brefractive index
  3. Cextreme hardness
  4. Dbad conductivity
Show answer & explanation

Answer: B) refractive index

Q75. Carborundum is another name for which of the following?

  1. Acalcium carbide
  2. Bcalcium oxide
  3. Csilicon carbide
  4. Dsilicon oxide
Show answer & explanation

Answer: C) silicon carbide

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