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Organic Chemistry

243 MCQ questions with answers and explanations · page 4 of 10

Test yourself▶ 25 question test▶ 50 question test

Q76. Methane is a colorless, odorless, non-toxic, but flammable gas. What is its common name?

  1. Ablue vitriol
  2. Blaughing gas
  3. CHeating gas
  4. DMarsh gas
Show answer & explanation

Answer: D) Marsh gas

Q77. Methane gas is produced in the laboratory by

  1. Aheating sodium acetate with sodalime
  2. BBy heating sodium propionate with sodalime
  3. CBy heating sodium benzoate with sodalime
  4. Dnone of these
Show answer & explanation

Answer: A) heating sodium acetate with sodalime

Q78. Which of the following is known as 'Marsh Gas'?

  1. AEthene
  2. Bchlorine
  3. CAthene
  4. Dmethane
Show answer & explanation

Answer: D) methane

Q79. Which gas is mainly present in the mixture of gases coming out of a septic tank?

  1. Amethane
  2. Bammonia
  3. Chydrogen
  4. Dnitrogen
Show answer & explanation

Answer: A) methane

Q80. What is the main component of 'Gobar Gas'?

  1. AAthene
  2. Bmethane
  3. CPropane
  4. DAcetylene
Show answer & explanation

Answer: B) methane

Q81. The main component of natural gas is ____

  1. Amethane
  2. BEthane
  3. Cbutane
  4. Dhydrogen
Show answer & explanation

Answer: A) methane

Q82. Which one of the following is the largest component of biogas?

  1. Acarbon dioxide
  2. Bmethane
  3. Chydrogen
  4. Dhydrogen sulfide
Show answer & explanation

Answer: B) methane

Q83. Which of the following is the main component of LPG?

  1. Amethane
  2. BAthene
  3. CPropane
  4. Dbutane
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Answer: D) butane

Q84. The gas produced due to decomposition of vegetation in marshy areas is ____

  1. Acarbon monoxide
  2. Bcarbon dioxide
  3. Csulfur dioxide
  4. Dmethane
Show answer & explanation

Answer: D) methane

Q85. The gas used for cooking is mainly

  1. Amixture of N² and O²
  2. Bcarbon monoxide
  3. Cmethane
  4. Dcarbon dioxide
Show answer & explanation

Answer: C) methane

Q86. Which of the following gases causes explosions in coal mines?

  1. Acarbon dioxide
  2. Bnitrogen
  3. Cmethane
  4. Dbutane
Show answer & explanation

Answer: C) methane

Q87. Which of the following gases is used in cigarette lighters?

  1. Abutane
  2. Bmethane
  3. CPropane
  4. DRadon
Show answer & explanation

Answer: A) butane

Q88. For safety reasons, what is filled in LPG cooking gas cylinders to make the gas smell good, so that leakage can be detected quickly?

  1. Aglycol
  2. Bglycerol
  3. CMercaptan
  4. Dalcohol
Show answer & explanation

Answer: C) Mercaptan

Q89. The refrigerant 'Freon' is ____

  1. Acalcium tetrachloride
  2. BDifluoro dichloro methane
  3. CFluorspar and Feldspar
  4. DHydrofluoric acid
Show answer & explanation

Answer: B) Difluoro dichloro methane

Q90. Which gas is present in both natural gas and biogas?

  1. Amethane
  2. Bbutane
  3. Chydrogen
  4. Dcarbon monoxide
Show answer & explanation

Answer: A) methane

Q91. The gas which is emitted from paddy fields and increases the temperature of the land is ____

  1. Anitrogen
  2. Bcarbon dioxide
  3. Ccarbon monoxide
  4. Dmethane
Show answer & explanation

Answer: D) methane

Q92. The shape of ethylene molecule is ____

  1. Acoplanar
  2. BAngular
  3. Clinear
  4. Drhombic
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Answer: A) coplanar

Q93. The plastic obtained by polymerization of ethylene is ____

  1. ATeflon
  2. BBakelite
  3. CNylon
  4. Dpoly ethylene
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Answer: D) poly ethylene

Q94. Which poisonous gas is formed when ethylene reacts with sulphur monochloride?

  1. ALucite
  2. Bmustard gas
  3. Cchloropicrin
  4. DSerine
Show answer & explanation

Answer: B) mustard gas

Q95. Which one of the following was used as a chemical weapon in World War I?

  1. Acarbon monoxide
  2. Bhydrogen cyanide
  3. Cmustard gas
  4. Dsteam coal gas
Show answer & explanation

Answer: C) mustard gas

Q96. Ethyne is an example of_

  1. Atriple bond compound
  2. Bsubcovalent bond
  3. Csingle bond compound
  4. Dof a compound containing a double bond
Show answer & explanation

Answer: A) triple bond compound

Q97. Which gas is produced by the reaction of water on calcium carbide?

  1. Amethane
  2. BEthane
  3. CEthylene
  4. DAcetylene
Show answer & explanation

Answer: D) Acetylene

Q98. Which one of the following fuels is used in gas welding?

  1. ALPG
  2. BEthylene
  3. Cmethane
  4. DAcetylene
Show answer & explanation

Answer: D) Acetylene

Q99. Which gas is used for artificial ripening of fruits?

  1. AAthene
  2. BAcetylene
  3. CPropane
  4. Dmethane
Show answer & explanation

Answer: B) Acetylene

Q100. Which organic compound by the name of 'Narsilen' is used as an anesthetic in surgery?

  1. AYear
  2. Bchloroform
  3. CEthane
  4. DAcetylene
Show answer & explanation

Answer: D) Acetylene

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