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Metals and Their Compounds

200 MCQ questions with answers and explanations · page 5 of 8

Test yourself▶ 25 question test▶ 50 question test

Q101. By applying which substance the bleeding from a cut area stops?

  1. Asodium chloride
  2. Bpotassium chloride
  3. Cammonium chloride
  4. DFerric Chloride
Show answer & explanation

Answer: D) Ferric Chloride

Q102. 'Green Vitriol' or 'Green Kasis' is the popular name of which chemical substance?

  1. Acopper sulphate
  2. Bzinc sulphate
  3. CMagnesium Sulfate
  4. Dferrous sulfate
Show answer & explanation

Answer: D) ferrous sulfate

Q103. By passing water vapour over red hot iron, it is obtained-

  1. ACO+H²
  2. BH²O²
  3. CH₂
  4. DN²
Show answer & explanation

Answer: C) H₂

Q104. The first metal used by humans was

  1. ASleep
  2. Bsilver
  3. Ccopper
  4. DIron
Show answer & explanation

Answer: C) copper

Q105. Name the only metal that is antibacterial.

  1. Asodium
  2. Baluminum
  3. CIron
  4. Dcopper
Show answer & explanation

Answer: D) copper

Q106. Which two metals are not silver in colour?

  1. Asodium and magnesium
  2. Bcopper and gold
  3. CPalladinum and Platinum
  4. Dnickel and zinc
Show answer & explanation

Answer: B) copper and gold

Q107. green basic carbonate layer forms on a metal when exposed to air for some time. That metal is

  1. Acopper
  2. Bsilver
  3. CNickel
  4. Dzinc
Show answer & explanation

Answer: A) copper

Q108. Which of the following metals is present as a common component in brass, bronze and German silver?

  1. Aantimony
  2. Bcopper
  3. CTin
  4. Dzinc
Show answer & explanation

Answer: B) copper

Q109. The calorimeter is made

  1. AIron
  2. Bsilver
  3. Ccopper
  4. Daluminum
Show answer & explanation

Answer: C) copper

Q110. Lightning conductors are made of

  1. AIron
  2. Bcopper
  3. Caluminum
  4. Dsteel
Show answer & explanation

Answer: B) copper

Q111. Bronze is an alloy

  1. Acopper and tin
  2. Bcopper and silver
  3. Ccopper and zinc
  4. Dof tauba and lead
Show answer & explanation

Answer: A) copper and tin

Q112. The best conductor of electricity among the following is

  1. AIron
  2. Bsilicon
  3. CCopper
  4. Dceramic
Show answer & explanation

Answer: C) Copper

Q113. Which metal is sweetened while making gold jewellery?

  1. Acopper
  2. BMercury
  3. CPlatinum
  4. Daluminum
Show answer & explanation

Answer: A) copper

Q114. Which disease is caused by increase in the amount of copper metal in the human body?

  1. ASiderosis
  2. Banemia
  3. Cesophagus
  4. DWilson's disease
Show answer & explanation

Answer: D) Wilson's disease

Q115. The chemical formula of Blue Vitriol is—

  1. ANa²S²O³5H²O
  2. BNa²CO³ 10H²O
  3. CNa²SO⁴ 10H₂O
  4. DCuSO⁴5H²O
Show answer & explanation

Answer: D) CuSO⁴5H²O

Q116. The chemical formula of 'Tutiya' is

  1. ACuS
  2. BCu(OH)²
  3. CCuCl²-2H²O
  4. DCuSO⁴ 5H²O
Show answer & explanation

Answer: D) CuSO⁴ 5H²O

Q117. The enemy element of copper is

  1. ASulphur
  2. BCarbon
  3. Cnitrogen
  4. Dhydrogen
Show answer & explanation

Answer: A) Sulphur

Q118. The chemical name of Blue Vitriol is-

  1. AFerrous Sulphate Heptahydrate
  2. BZinc Sulfate Heptidate
  3. Ccopper sulphate pentahydrate
  4. Dsodium sulfate decahydrate
Show answer & explanation

Answer: C) copper sulphate pentahydrate

Q119. Blue vitriol is

  1. Acopper sulphate
  2. Bcalcium sulphate
  3. CIron Sulphate
  4. Dsodium sulphate
Show answer & explanation

Answer: A) copper sulphate

Q120. Which chemical is used to kill algae in water tanks?

  1. Acopper sulphate
  2. BMagnesium Sulfate
  3. Czinc sulphate
  4. Dnitric acid
Show answer & explanation

Answer: A) copper sulphate

Q121. In electrolytic refining of copper, the electrolyte is a solution of which of the following?

  1. AAcidified Copper Chloride
  2. BAcidified copper sulfate
  3. Cpotassium chloride
  4. Dsodium sulphate
Show answer & explanation

Answer: B) Acidified copper sulfate

Q122. In copper sulphate, sodium carbonate and gypsum, the number of crystallization water molecules is

  1. A5, 10 and 2 respectively
  2. B10, 2 and 5 respectively
  3. C5, 2 and 10 respectively
  4. D2, 5 and 10 respectively
Show answer & explanation

Answer: A) 5, 10 and 2 respectively

Q123. Zinc metal is mainly extracted from which ore?

  1. AZinc Blende
  2. BCalamine
  3. CZincite
  4. DWillemite
Show answer & explanation

Answer: A) Zinc Blende

Q124. For which mineral are the mines of Jawar located in Rajasthan famous?

  1. Acopper
  2. BIron
  3. Cmica
  4. Dzinc
Show answer & explanation

Answer: D) zinc

Q125. Coating a layer of which of the following metals on iron is called 'galvanising'?

  1. Azinc
  2. Bcopper
  3. CCadmium
  4. DTin
Show answer & explanation

Answer: A) zinc

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