Chemistry Solved Questions and Answers Set 16

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Q.1:- The conduction of electricity through the electrolyte solution is due to ?

  1. Movement of molecules of electrolyte
  2. Movement of ions of electrolyte
  3. Movement of separate atom
  4. Movement of particles of the solvent

Q.2:- Quantity of electricity is measure in ?

  1. Ampere second
  2. Ampere
  3. Ampere second-1
  4. Ampere-1 second

Q.3:- The separation of colloidal particles from those of molecular dimensions is called ?

  1. Dialysis
  2. Photolysis
  3. Peptization
  4. Pyrolysis

Q.4:- When a strong beam of light is passed through a colloidal solution, the light is ?

  1. Reflected
  2. Scattered
  3. Both a and b
  4. None of these

Q.5:- The blue colour of water in the sea is due to ?

  1. Refraction of the blue light by the impurities in sea water
  2. Scattering of blue light by water molecules
  3. Refraction of blue sky by sea water
  4. Absorption of other colours except the blue colour by water molecules

Q.6:- Cyanide process is used for extraction of ?

  1. Ag
  2. Au
  3. Cu
  4. Zn

Q.7:- Which one of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torchlights, electric shavers etc ?

  1. Nickel and Cadmium
  2. Zinc and Carbon
  3. Lead and Peroxide and Lead
  4. Iron and Cadmium

Q.8:- The most abundant metal in the Earth’s crust is ?

  1. Magnesium
  2. Aluminium
  3. Calcium
  4. Iron
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Q.9:- Which one of the following mineral does not contain Oxygen ?

  1. Haematite
  2. Bauxite
  3. Cryolite
  4. Calcite

Q.10:- During the process of electrolytic refining of Copper, some metals present as impurity settle as anode mud. These are ?

  1. Pb and Zn
  2. Ag and Au
  3. Sn and Ag
  4. Fe and Ni

Q.11:- Which of the following ores contains both calcium and magnesium ?

  1. Lime stone
  2. Dolomite
  3. Epsom salt
  4. Carnallite

Q.12:- Which of the following acts as an antidote to HgCl2 poisoning ?

  1. Yellow of egg
  2. Egg of fish
  3. White of egg
  4. Egg

Q.13:- The ore of Aluminium is ?

  1. Chalco pyrites
  2. Hematite
  3. Fluorspar
  4. Bauxite

Q.14:- The metal used for making air crafts and rockets is ?

  1. Lead
  2. Aluminium
  3. Nickel
  4. Copper

Q.15:- What is the most reactive metal ?

  1. Sodium
  2. Calcium
  3. Iron
  4. Potassium

Q.16:- The process used for removal of hardness of water is ?

  1. Baeyer
  2. Hoope
  3. Calgon
  4. Serpeck

Q.17:- The chief one of Aluminium is ?

  1. Kaolin
  2. Feldspar
  3. Cryolite
  4. Bauxite

Q.18:- Which one of the following elements is metalloid ?

  1. Si
  2. Pb
  3. Ge
  4. C

Q.19:- The superior type of laboratory apparatus are made of ?

  1. Sodalime glass
  2. Hard glass
  3. Flint glass
  4. Pyrex glass
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Q.20:- Permanent hardness of water is due to the presence of ?

  1. Sulphates of Sodium and Potassium
  2. Sulphates of Magnesium and Calcium
  3. Carbonates of Sodium and Magnesium
  4. Bicarbonates of Magnesium and Calcium

Q.21:- Which is the best fertilizer ?

  1. Phospahtic slag
  2. Triple phosphate
  3. Super phosphate
  4. None of these

Q.22:- Brimstone is another name of ?

  1. Lapis Lazuli
  2. Phosphorous
  3. Sulphur
  4. Sodium

Q.23:- Photographic plates are coated with a film of ?

  1. AgCl
  2. AgBr
  3. AgI
  4. AgNO3

Q.24:- The coloured discharge tubes for advertisement mainly contain ?

  1. Neon
  2. Argon
  3. Helium
  4. Xenon

Q.25:- The most abundant elements is ?

  1. Silicon
  2. Calcium
  3. Nitrogen
  4. Oxygen

 

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