Metal And Its Compounds MCQ

Test your knowledge with important Metal And Its Compounds MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Metal And Its Compounds MCQs at Bissoy

• The chemical formula of the Plaster of Paris is
  ক

  CaSO₄

  খ

  $$CaS{O_4} \cdot \frac{1}{2}{H_2}O$$

  গ

  $$CaS{O_4} \cdot {H_2}O$$

  ঘ

  $$CaS{O_4} \cdot 2{H_2}O$$
• Which one among the following chemicals is used as washing soda?
  ক

  Calcium carbonate

  খ

  Calcium bicarbonate

  গ

  Sodium carbonate

  ঘ

  Sodium bicarbonate
• When electricity is passed through an aqueous (saline) solution of sodium chloride, it decomposes into which of the following:
  ক

  NaOH + H₂ + Cl₂

  খ

  NaOH + H₂ + O₂

  গ

  NaOH + HCl + H₂

  ঘ

  NaOH + H₂ + N₂
• . . . . . . . . reacts vigorously with water to form slaked lime.
  ক

  CaCl₂

  খ

  CaO

  গ

  CaCO₃

  ঘ

  Ca(OH)₂
• Who discovered stainless steel?
  ক

  William Howard Lievens

  খ

  Joseph Aspadin

  গ

  Harry Bearley

  ঘ

  James Dysne
• Which of the following metals, if kept in open, immediately ignites a fire?
  ক

  Lead and silver

  খ

  Magnesium

  গ

  Gold and Silver

  ঘ

  Sodium and potassium
• What is deposited on iron in the process of galvanisation?
  ক

  Copper

  খ

  Zinc

  গ

  Tin

  ঘ

  Aluminium
• Bleaching powder is not used for:
  ক

  oxidising chemicals

  খ

  preparing bread

  গ

  bleaching cotton

  ঘ

  disinfecting water
• Aluminium metal is obtained from
  ক

  Pitch blende

  খ

  Graphite

  গ

  Bauxite

  ঘ

  Argentite
• Galvanization is a process in which a layer of zinc is plated to protect iron objects from . . . . . . . .
  ক

  turning

  খ

  rusting

  গ

  being corrosive

  ঘ

  decomposed
• The atomic mass of Calcium is:
  ক

  40

  খ

  24

  গ

  32

  ঘ

  23
• Which of the following has the greatest malleability?
  ক

  gold

  খ

  mercury

  গ

  lithium

  ঘ

  titanium
• The element with atomic number . . . . . . . . will form alkaline oxide.
  ক

  17

  খ

  14

  গ

  11

  ঘ

  7
• Which of the following do not react with water at all?
  ক

  Iron

  খ

  Lead

  গ

  Magnesium

  ঘ

  None of the above
• When one molecule of lead nitrate is heated, then:
  ক

  2 moles of O₂ gas are produced

  খ

  1 mole of NO₂ gas is produced

  গ

  2 moles of NO₂ gas are produced

  ঘ

  3 moles of NO₂ gas are produced
• In the foarth flotation method, the ore powder is kept in a tank filled with mixture . . . . . . . .
  ক

  Water and aluminium

  খ

  Water and pine oil

  গ

  Copper and water

  ঘ

  Water and vegetable oil
• Which of the following is used for water purification?
  ক

  vinegar

  খ

  baking soda

  গ

  alum

  ঘ

  tartaric acid
• Which of the following reactions removes the highly reactive metals from the pure molten ore?
  ক

  Reduction by appropriate agent

  খ

  Electrolysis

  গ

  Calcination

  ঘ

  Roasting
• . . . . . . . . atoms are present in sodium carbonate molecule.
  ক

  6

  খ

  8

  গ

  5

  ঘ

  7
• How many water molecules are present in a molecule of ferrous sulphate crystal?
  ক

  8

  খ

  6

  গ

  5

  ঘ

  7
• Choose odd from the following.
  ক

  Mercury

  খ

  Mercury or quick silver

  গ

  Hydrargyrum

  ঘ

  Bromos
• Sodium calcium silicate is called . . . . . . . .
  ক

  hard glass

  খ

  borosilicate glass

  গ

  soft glass

  ঘ

  jena glass
• Gold is soluble in which of the following:
  ক

  Silver

  খ

  Iron

  গ

  Aquarezia

  ঘ

  Mercury
• Zinc can separate copper from copper sulphate solution, because zinc-
  ক

  is less reactive than copper

  খ

  is more oxidized than copper

  গ

  is more reactive than copper

  ঘ

  is less oxidized than copper
• Which of the following is not a form of Calcium Carbonate?
  ক

  Chalk

  খ

  Gypsum

  গ

  Limestone

  ঘ

  Marble
• What is the common name for Calcium hydroxide solution?
  ক

  Lemonade

  খ

  Dietary Soda

  গ

  Salt solution

  ঘ

  Vinegar
• Galena is the ore of . . . . . . . .
  ক

  lead

  খ

  copper

  গ

  aluminium

  ঘ

  iron
• What is the colour of precipitates formed when carbon dioxide passes through a solution of calcium hydroxide?
  ক

  gray

  খ

  black

  গ

  blue

  ঘ

  white
• Which one of the following materials contains calcium?
  ক

  China clay

  খ

  Corundum

  গ

  Gypsum

  ঘ

  Talc
• Acidity can be cured by taking . . . . . . . . by a person.
  ক

  Vinegar solution

  খ

  Lemon juice

  গ

  Buttermilk

  ঘ

  Baking soda solution