Nanoparticles MCQ

Test your knowledge with important Nanoparticles MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Nanoparticles 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
• Which of the following is not a factor affecting the electrostatic interactions between colloidal particles?
  ক

  Mass of the particles

  খ

  Surface potential

  গ

  Mobility of the phases

  ঘ

  Screening length of solvent
• Why does smoke emitted by motorcycles have a blue tinge?
  ক

  Scattering of light

  খ

  Polarization of light

  গ

  Reverse osmosis

  ঘ

  Electrodialysis
• Choose the correct statement from the following options.
  ক

  Colloids do not flocculate

  খ

  True solutions exhibit Tyndall scattering

  গ

  Colloids fail to show Brownian motion

  ঘ

  THF is used to stabilize metallic nanoparticles as colloids
• Which of the following is the Lennard – Jones equation?
  ক

  dG1 = (A/R12) – (B/R6)

  খ

  dN1(t)/dt = -λ1N1(t)

  গ

  fw(Sw) = λw/(λw+λn)

  ঘ

  ∂n/∂t = – (1/ϵ0)∇.qs
• Which of the following is not a colloid?
  ক

  Cytoplasm of living cells

  খ

  Mixture of sand and water

  গ

  Coloured glasses

  ঘ

  Mayonnaise
• What is the phenomenon of migration of colloidal particles under the influence of a spatially uniform electric field known as?
  ক

  Electrophoresis

  খ

  Electrodialysis

  গ

  Electro-osmosis

  ঘ

  Electroluminescence
• Which of the following reactions does not result in colloid formation?
  ক

  5HI + HIO3 ➔ 3I2 + 3H2O

  খ

  AuCl3 + 3SnCl2 ➔ 2Au + 3SnCl4

  গ

  H2S + Br2 ➔ S + 2HBr

  ঘ

  FeCl3 + 3H2S ➔ Fe(OH)3+ 3HCl
• Glucose is frequently used as diluents in the formation of which of the following?
  ক

  Benzosols

  খ

  Sulpher sols

  গ

  Soap sols

  ঘ

  Gold sols
• How can we obtain colloidal dispersion in organic liquids?
  ক

  Destabilize a metallic core using halogens

  খ

  Stabilize a metallic core using lipobhobic surfactants

  গ

  Stabilize a metallic core using NR4Cl

  ঘ

  Destabilize a metallic core using lipophilic surfactants
• Find out a method from the given options that is not used for the preparation of colloids.
  ক

  Double decomposition

  খ

  Vulcanization

  গ

  Peptization

  ঘ

  Hydrolysis
• There are three substances A, B and C with coagulation values as 5, 2.1, and 0.06 for a metal sol respectively. Find out the ratio of their coagulating powers.
  ক

  12.92 : 5 : 0.095

  খ

  0.2 : 0.476 : 16.666

  গ

  3.33 : 0.623 : 1

  ঘ

  0.0267 : 0.08 : 3
• Blood is a true solution.
  ক

  True

  খ

  False
• Select the correctly matched pair from the following options.
  ক

  Sol=Whipped cream; Emulsion=Smoke

  খ

  Foam=Fog; Gel=Agar

  গ

  Aerosol=Lava; Sol=Ice cloud

  ঘ

  Emulsion=Latex; Foam=Soda suds