NEET Questions Solved


Which does not show Tyndall effect?

(a) Emulsion

(b)Blood

(c)milk

(d)sugar solution

Difficulty Level:

  • 20%
  • 20%
  • 13%
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Butter is a colloid form in which:

(a) fat is dispersed in solid casein

(b) fat globules are dispersed in water

(c) water is dispersed in fat

(d) suspension of casein is in water

Difficulty Level:

  • 22%
  • 30%
  • 44%
  • 7%
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The cotterells precipitator is used to :

(a) neutralize charge on carbon particles in air in smoke

(b) coagulate carbon atoms of smoke

(c) bring in cataphoresis in carbon particles

(d) all of the above

(d) The negatively charged carbon particles in air (smoke) are moved towards anode due to cataphoresis, where they are neutralized to left free air. The process is used to control air pollution.

Difficulty Level:

  • 14%
  • 16%
  • 9%
  • 63%
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Foam is a colloidal solution of:

(a) gaseous particles dispersed in gas                (c) solid particles dispersed in a liquid

(b) gaseous particles dispersed in a liquid           (d) solid particles dispersed in gas

Difficulty Level:

  • 9%
  • 46%
  • 32%
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A liquid aerosol is a colloidal system of:

(a)a liquid dispersed in a solid

(b)a liquid dispersed in a gas

(c)a gas dispersed in a liquid

(d) a solid dispersed in a gas

Difficulty Level:

  • 10%
  • 62%
  • 21%
  • 9%
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Alum helps in purifying water by:

(a) forming Si complex with clay particles

(b) sulphate part which combines with the dirt and removes it

(c) aluminium which coagulates the mud particles

(d) making mud water soluble

Difficulty Level:

  • 13%
  • 26%
  • 59%
  • 5%
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Clouds, mist, fog and aerosols are colloidal solution of:

(a) solid in a gas

(b) gas in a solid

(c) liquid in a gas

(d) gas in a liquid

Difficulty Level:

  • 14%
  • 7%
  • 71%
  • 10%
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Gold number is the index for:

(a)protective power of lyophilic colloid

(b)purity of gold

(c)metallic gold

(d)electroplated gold

Difficulty Level:

  • 87%
  • 9%
  • 5%
  • 2%
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Egg albumin is:

(a)reversible colloid

(b)lyophilic colloid

(c)protective colloid

(d)all of these

Difficulty Level:

  • 7%
  • 21%
  • 17%
  • 57%
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Milk contains a protein that is very good for health. The protein is:

(a) caffeine

(b) calciferol

(c) keratin

(d) casein

Difficulty Level:

  • 3%
  • 6%
  • 9%
  • 83%
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