Colloids MCQ

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

• Who discovered Tyndall effect?
  ক

  Pearl Esther Tyndall

  খ

  William Tyndall

  গ

  John Tyndall

  ঘ

  Louisa charlotte Tyndall
• Which form of colloid has gaseous particles dispersed in solid or liquid?
  ক

  Sol

  খ

  Foam

  গ

  Gel

  ঘ

  Emulsion
• Who observed electrophoresis for the first time?
  ক

  Iijima and Robert F. Curl

  খ

  Krätschmer and Huffmen

  গ

  Sir Harold W.Kroto and Richard E.Smalley

  ঘ

  Peter Ivanovich Strakhov & Ferdinand Frederic Ruess
• Blue eye colour of a person is due to Tyndall scattering.
  ক

  True

  খ

  False
• Define Collodion.
  ক

  Colloidal emulsion of nitrocellulose in water

  খ

  Colloidal sols of cellulose nitrate in ether and alcohol

  গ

  Colloidal gel of cellulose acetate in ethyl alcohol

  ঘ

  Colloidal foam of cellulose anhydride in ether
• Identify a factor that is not responsible for bringing stability to colloidal particles.
  ক

  Treatment with polymeric molecules

  খ

  Steric hindrance

  গ

  Flocculation

  ঘ

  Repulsion of colloidal particles
• What is the size range of colloidal particles?
  ক

  < 10-7 cm

  খ

  10-17 to 10-12 cm

  গ

  > 10-5 cm

  ঘ

  10-7 to 10-5 cm
• What is the correct order of process followed in the mechanical dispersion method for colloid formation?
  ক

  Particles are grinded ➔ Suspension of the substance is added into mill ➔ Addition of inert diluents ➔ Dispersion in water forming sols

  খ

  Addition of inert diluents ➔ Particles are grinded ➔ Dispersion in water forming sols ➔ Suspension of the substance is added into mill

  গ

  Suspension of the substance is added into mill ➔ Particles are grinded ➔ Dispersion in water forming sols ➔ Addition of inert diluents

  ঘ

  Dispersion in water forming sols ➔ Suspension of the substance is added into mill ➔ Addition of inert diluents ➔ Particles are grinded
• Bredig arc’s method is not used for the preparation of sols of which of the following metal sols.
  ক

  Gold

  খ

  Platinum

  গ

  Silver

  ঘ

  Vanadium
• Which method of colloid purification uses a phenomenon of diffusion through a permeable membrane?
  ক

  Electrodialysis

  খ

  Electrodecantation

  গ

  Dialysis

  ঘ

  Ultrasonic dispersion
• What happens when a soap bubble is charged?
  ক

  Soap bubbles attract each other

  খ

  Soap bubbles decrease in size

  গ

  Soap bubbles increase in size

  ঘ

  Soap bubbles remain unaffected
• What happens when the ferric chloride solution is added to freshly precipitated ferric hydroxide?
  ক

  Green coloured colloid

  খ

  Brown coloured colloid

  গ

  Red coloured colloid

  ঘ

  Blue coloured colloid
• What is the main difference between colloids and crystalloids?
  ক

  Solubility

  খ

  Reactivity

  গ

  Particle size

  ঘ

  Electrical nature
• Identify the form from the following.
  ক

  Cheese

  খ

  Paint

  গ

  Pumice stone

  ঘ

  Cork
• Identify the foam from the following.
  ক

  Bubbles

  খ

  Cake

  গ

  Froths of air

  ঘ

  Soap
• Identify a gel from the following.
  ক

  Curd

  খ

  Cheese

  গ

  Yogurt

  ঘ

  Yolk
• Identify a sol from the following.
  ক

  Stone

  খ

  Paint

  গ

  Ink

  ঘ

  Rice milk
• Identify the liquid-liquid emulsion from the following.
  ক

  Milk

  খ

  Oil

  গ

  Salt water

  ঘ

  Sugar solution
• Which of the following colloidal combinations is not possible?
  ক

  Liquid in solid

  খ

  Solid in liquid

  গ

  Gas in gas

  ঘ

  Gas in solid
• What is the colloidal solution of liquid and gas called?
  ক

  Aerosol

  খ

  Gel

  গ

  Sol

  ঘ

  Emulsion
• What is a colloidal solution of liquid in liquid called?
  ক

  Foam

  খ

  Form

  গ

  Emulsification

  ঘ

  Solid sol
• What is the colloidal solution of liquid with solid called?
  ক

  Sol

  খ

  Gel

  গ

  Foam

  ঘ

  Form
• What is the colloidal mixture of solid with solid called?
  ক

  Solid sol

  খ

  Liquid sol

  গ

  Sol

  ঘ

  Gel
• What is called a dispersion medium?
  ক

  It is where the dispersed phase settles

  খ

  It is where the solute particles settle

  গ

  It is where the dispersed phase is suspended

  ঘ

  It is the primary medium
• What is called a dispersion phase?
  ক

  It is the main layer

  খ

  It is the secondary layer in which the colloidal particles are dispersed

  গ

  It is the secondary layer

  ঘ

  It is the basic colloidal layer
• What is the size of normal an amino acid?
  ক

  1 to 2 nm

  খ

  2 to 3 nm

  গ

  4 to 5 nm

  ঘ

  2 to 5 nm
• Which of the following form of colloid is considered to be the lightest colloid?
  ক

  Gaseous foam

  খ

  Solid sol

  গ

  Sol

  ঘ

  Liquid sol
• Which of the following form of colloid is considered to be the strongest colloid?
  ক

  Gel

  খ

  Foam

  গ

  Solid sol

  ঘ

  Liquid sol
• During an experiment, accidently iodine got mixed up with a biological sample of proteins and polys. Identify the smallest colloid that can be obtained during the process of separation.
  ক

  Fats

  খ

  Amino acids

  গ

  Polys

  ঘ

  R molecules
• Calculate the size of the colloidal particle present in the mixture of fats and milk from the given data. Amount of milk in litres: 20 Amount of fats in grams: 10 Time taken to mix the ingredients: 20 sec
  ক

  3

  খ

  6

  গ

  4

  ঘ

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