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Non-Metals and Their Compounds

312 MCQ questions with answers and explanations · page 12 of 13

Test yourself▶ 25 question test▶ 50 question test

Q276. Which of the following is the main harmful gas emitted by automobiles that causes air pollution?

  1. Acarbon monoxide
  2. Bmethane
  3. Ccarbon dioxide
  4. Dozone gas
Show answer & explanation

Answer: A) carbon monoxide

Q277. Which of the following gases turns into liquid at the lowest temperature?

  1. Ahydrogen
  2. Boxygen
  3. Chelium
  4. Dnitrogen
Show answer & explanation

Answer: C) helium

Q278. Gunpowder is a mixture.

  1. Aof sand and TNT
  2. Bof TNT and charcoal
  3. Cof niter, sulphur and charcoal
  4. Dof sulfur sand and charcoal
Show answer & explanation

Answer: B) of TNT and charcoal

Q279. How does each carbon atom in graphite form bonds with three other carbon atoms?

  1. Aby creating a three-dimensional structure
  2. Bforming a hexagonal configuration in the same plane
  3. Cforming a square configuration in the same plane
  4. Dforming a pentagonal configuration in the same plane
Show answer & explanation

Answer: B) forming a hexagonal configuration in the same plane

Q280. Which of the following statements is not correct about diamond and graphite?

  1. ADiamond has a tetrahedral structure, while perlite has a hexagonal planar structure
  2. BDiamond and graphite have different physical and chemical properties.
  3. CGraphite is a good conductor of electricity, whereas diamond is not.
  4. DGraphite is soft, but diamond is hard.
Show answer & explanation

Answer: B) Diamond and graphite have different physical and chemical properties.

Q281. Which of the following gases is used to purify drinking water?

  1. Asulfur dioxide
  2. Bchlorine
  3. Ccarbon dioxide
  4. DFluorine
Show answer & explanation

Answer: B) chlorine

Q282. Carbon dioxide is called 'greenhouse gas' because it-

  1. Aabsorbed by green plants
  2. BAllows sunlight to reach the Earth, but does not allow heat to escape
  3. Cemitted by green plants
  4. DAllows heat to enter but does not allow sunlight to escape
Show answer & explanation

Answer: C) emitted by green plants

Q283. Which one of the following is not a monatomic element?

  1. ACopper
  2. Bsodium
  3. CIodine
  4. DBarium
Show answer & explanation

Answer: D) Barium

Q284. Which of the following is monatomic?

  1. Ahydrogen
  2. BSulphur
  3. CPhosphorus
  4. Dhelium
Show answer & explanation

Answer: B) Sulphur

Q285. In a common fire extinguisher, carbon dioxide is produced due to the reaction of

  1. ASodium carbonate and dilute HCI
  2. BSodium bicarbonate and dilute H²SO⁴
  3. CLimestone and dilute H²SO⁴
  4. DMarble Powder and Dilute HCT
Show answer & explanation

Answer: B) Sodium bicarbonate and dilute H²SO⁴

Q286. Graphene is ____

  1. Acarbon alloy
  2. BNanomodel of carbon
  3. Cisotope of carbon
  4. DNone of these
Show answer & explanation

Answer: C) isotope of carbon

Q287. Which glass is used in the manufacture of electric bulbs?

  1. ACrown glass
  2. BPyrex glass
  3. Cflint glass
  4. Dfiber glass
Show answer & explanation

Answer: A) Crown glass

Q288. Which of the following is not a noble gas?

  1. Ahydrogen
  2. Bhelium
  3. CNeon
  4. DOrgan
Show answer & explanation

Answer: A) hydrogen

Q289. Non-metals are generally bad conductors of electricity, but graphite is a good conductor of electricity because_

  1. AIt is a carbon model
  2. BIt has loose electrons
  3. CIt is brittle
  4. DIt forms primary oxides
Show answer & explanation

Answer: A) It is a carbon model

Q290. Which of the following gases comes second in terms of abundance in the Earth's atmosphere?

  1. Aoxygen
  2. Bhydrogen
  3. Cnitrogen
  4. DCO²
Show answer & explanation

Answer: C) nitrogen

Q291. Which of the following acids is a mineral acid?

  1. Acitric acid
  2. Bhydrochloric acid
  3. Cascorbic acid
  4. DTartaric acid
Show answer & explanation

Answer: B) hydrochloric acid

Q292. What is the powerful substance in smoke that affects the eyes?

  1. Aozone
  2. BSo²
  3. CCO²
  4. DPAN
Show answer & explanation

Answer: D) PAN

Q293. Which of the following substances is a supercooled liquid?

  1. Aammonia
  2. Bice cream
  3. CLabdi
  4. Dglass
Show answer & explanation

Answer: D) glass

Q294. Quartz is the crystalline form of which of the following?

  1. Alimestone
  2. Bglass
  3. Cgynoecium
  4. Dof alumina
Show answer & explanation

Answer: C) gynoecium

Q295. Which of the following elements cannot be detected by Lassaigne's test?

  1. AIodine
  2. Bchlorine
  3. CSulphur
  4. Dchlorine
Show answer & explanation

Answer: D) chlorine

Q296. The main gases found in the Sun are ____

  1. Aoxygen and hydrogen
  2. Bhelium
  3. Chydrogen and helium
  4. Dhydrogen
Show answer & explanation

Answer: C) hydrogen and helium

Q297. Which of the following options can be classified as a low carbon compound and not as organic?

  1. Anucleic acids
  2. BPropane
  3. Ccyanides
  4. Dmethane
Show answer & explanation

Answer: C) cyanides

Q298. Which of the following is responsible for global warming?

  1. Amethane
  2. Bcarbon dioxide
  3. Cwater vapor
  4. DAll of the above
Show answer & explanation

Answer: D) All of the above

Q299. Which of the following is a 'greenhouse gas'?

  1. Acarbon dioxide
  2. Bsulfur dioxide
  3. Cmethane
  4. DAll of the above
Show answer & explanation

Answer: D) All of the above

Q300. The three elements that are most commonly used in chemical fertilizers are ____

  1. ANitrogen, sodium, sulfur
  2. BNitrogen, Potassium, Phosphor
  3. CNitrogen, phosphorus, sodium
  4. DCalcium, sodium, sulfur
Show answer & explanation

Answer: B) Nitrogen, Potassium, Phosphor

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