Free & Premium Study Material · Online Courses · Instant Download+91 99398 78821 · support@downloadstore.in
downloadstoreSTUDY MATERIAL
LoginRegister🛒0

Metals and Their Compounds

200 MCQ questions with answers and explanations · page 6 of 8

Test yourself▶ 25 question test▶ 50 question test

Q126. To protect iron from rust, a protective layer of zinc is applied on it, by what name is this process known?

  1. Agalvanization
  2. Bsmelting
  3. CAnnealing
  4. Dwelding
Show answer & explanation

Answer: A) galvanization

Q127. 'Khaira' disease of paddy is caused due to the deficiency of which element?

  1. Anitrogen
  2. Bzinc
  3. Ccalcium
  4. DMagnesium
Show answer & explanation

Answer: B) zinc

Q128. Which one of the following is a metal?

  1. Achlorine
  2. BZinc
  3. CNeon
  4. DIodine
Show answer & explanation

Answer: B) Zinc

Q129. Which of the following oxides shows both acidic and basic properties

  1. Azinc oxide
  2. Bcopper oxide
  3. Cmagnesium oxide
  4. Dcalcium oxide
Show answer & explanation

Answer: A) zinc oxide

Q130. What is Philosopher's Wool?

  1. AZnO
  2. BZnCO³
  3. CZnS
  4. DZnSO⁴
Show answer & explanation

Answer: A) ZnO

Q131. White Vitriol is

  1. ACuSO⁴ 5H²O
  2. BZnSO⁴ 7H²o
  3. CFeSO⁴ 7H²O
  4. DMgSO⁴7H²O
Show answer & explanation

Answer: B) ZnSO⁴ 7H²o

Q132. Lithopone is

  1. ABaSO⁴ + ZnS
  2. BBaS + ZnSO⁴
  3. CBaSO³+ ZnSO⁴
  4. DZnSO³+ BaSO⁴
Show answer & explanation

Answer: A) BaSO⁴ + ZnS

Q133. Coating of wooden objects to protect them from insects

  1. Aof zinc chloride
  2. Bof sodium chloride
  3. Cof ammonium chloride
  4. Dof silver bromide
Show answer & explanation

Answer: A) of zinc chloride

Q134. Which of the following is used as a 'rodenticide'?

  1. AZinc Carbonate
  2. BZinc Chloride
  3. CZinc Sulfide
  4. DZinc Phosphide
Show answer & explanation

Answer: D) Zinc Phosphide

Q135. The pungent substance used in dyeing is

  1. Acalcium hydroxide
  2. Baluminum sulfate
  3. Ccalcium carbonate
  4. Dzinc phosphate
Show answer & explanation

Answer: D) zinc phosphate

Q136. The metal which reacts with hot sodium hydroxide solution to give hydrogen gas is

  1. ACu
  2. BFe
  3. CAg
  4. DZn
Show answer & explanation

Answer: D) Zn

Q137. Silver is mainly extracted from which ore?

  1. Aargentite
  2. BNative Silver
  3. CKanrajiright
  4. DCalamine
Show answer & explanation

Answer: A) argentite

Q138. For the extraction of which the cyanide method is used?

  1. Asilver
  2. BSleep
  3. Ccopper
  4. Dzinc
Show answer & explanation

Answer: A) silver

Q139. Which of the following is the best conductor of electricity

  1. AMica
  2. Bcopper
  3. CGold
  4. Dsilver
Show answer & explanation

Answer: D) silver

Q140. Which of the following pairs is correctly matched?

  1. ASilver Iodide Horn Silver
  2. BSilver Chlorite Artificial Rain
  3. CZinc Phosphide Rat Poison
  4. DZinc sulfide Zinc sulfide
Show answer & explanation

Answer: C) Zinc Phosphide Rat Poison

Q141. Why do silver utensils turn black after some time?

  1. ADue to the formation of nitrate coating on silver
  2. BDue to the formation of sulphide coating on silver
  3. CDue to formation of chloride coating on silver
  4. DDue to the formation of an oxide coating on the square
Show answer & explanation

Answer: B) Due to the formation of sulphide coating on silver

Q142. Silver articles turn black when kept in the open for a long time due to the formation of which of the following?

  1. AH²S
  2. BAgS
  3. CAgSO⁴
  4. DAgS
Show answer & explanation

Answer: D) AgS

Q143. The horn is silver

  1. AAgCl
  2. BAgBr
  3. CAgNO³
  4. DAgl
Show answer & explanation

Answer: A) AgCl

Q144. Why is silver nitrate usually stored in coloured bottles?

  1. AIt gets oxidised in air
  2. BIt vaporizes in white bottles
  3. CIt explodes in sunlight
  4. DIt decomposes in sunlight
Show answer & explanation

Answer: D) It decomposes in sunlight

Q145. The chemical name of lunar caustic is

  1. Asodium sulphate
  2. Bsilver nitrate
  3. Ccalcium carbonate
  4. Dmercuric chloride
Show answer & explanation

Answer: B) silver nitrate

Q146. Which of the following is coated on the photographic plate?

  1. ASilver Oxide
  2. Bsilver bromide
  3. CSilver Chloride
  4. DSilver Iodide
Show answer & explanation

Answer: B) silver bromide

Q147. Which chemical is used to cause artificial rain?

  1. Asodium iodide
  2. Bsilver bromide
  3. Cethyl bromide
  4. DSilver Iodide
Show answer & explanation

Answer: D) Silver Iodide

Q148. Which of the following metals is found in the free state?

  1. Aaluminum
  2. BSleep
  3. CIron
  4. DCC
Show answer & explanation

Answer: B) Sleep

Q149. The most malleable and malleable metal is

  1. ASleep
  2. Blead
  3. Caluminum
  4. Dsilver
Show answer & explanation

Answer: A) Sleep

Q150. What is the king of metals?

  1. ASleep
  2. Bsilver
  3. CIron
  4. Daluminum
Show answer & explanation

Answer: A) Sleep

1…45678
← Isotopes, Isobars, and IsotonesNature and Composition of Matter →
💬