Chemistry MCQ

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• Soldering of two metals is possible because of the property of :
  ক

  Viscosity

  খ

  Osmosis

  গ

  Cohesion

  ঘ

  Surface tension
• Which of the following substance is highly plastic ?
  ক

  Quartz

  খ

  Mica

  গ

  Granite<br>

  ঘ

  Clay
• Which of the following has the highest lattice energy?
  ক

  KF

  খ

  CsF

  গ

  NaF

  ঘ

  RbF
• The aprotic solvent is
  ক

  H₂O

  খ

  C₆H₆

  গ

  HF

  ঘ

  NH₃
• Which of the following partially miscible liquid pairs has both lower and upper critical solution temperature?
  ক

  Water and Phenol

  খ

  Aniline and n-hexane

  গ

  Glycerine and m-toluene

  ঘ

  Water and diethyl aniline
• Which one is the most dense liquid from the below?
  ক

  Water

  খ

  Choloform

  গ

  Gasolin

  ঘ

  None of the above
• A solution is
  ক

  A homogeneous mixture of two or more substances<br>

  খ

  A solid dissolved in a liquid

  গ

  A solid dissolved i water

  ঘ

  A mixture of two liquids
• Molality of pure water is
  ক

  18.00

  খ

  1.80

  গ

  5.55

  ঘ

  55.5
• Which of the following methods is used in determining the number average molar mass of a macromolecule?
  ক

  Viscosity

  খ

  Osmotic pressure

  গ

  Sedimentation equilibrium

  ঘ

  Light scattering
• Which colour is produce by Arsenic during flame test?
  ক

  Green

  খ

  Red

  গ

  Crimson

  ঘ

  Blue
• Silver nitrate solution is kept in brown bottles in laboratory because
  ক

  It reacts with ordinary white bottles

  খ

  Brown bottles stops the passage of light through it<br>

  গ

  Brown bottles do not react with it

  ঘ

  Brown bottles react with it
• What is a Bakelite ?
  ক

  Solution

  খ

  Acid

  গ

  Base

  ঘ

  Polymer
• Natural rubber is a polymer of
  ক

  Vinyl acetate

  খ

  Propene

  গ

  Isoprene

  ঘ

  Styrene
• The monomers of dacron are
  ক

  Decane and decanol

  খ

  Decanone and decanol

  গ

  Ethylene glycol and terephthalic acid

  ঘ

  Ethylene glygol and phthalic acid
• Silicone is a polymer of
  ক

  Tetraalkyl silane

  খ

  Silicon tetrachloride

  গ

  Dialkyl dichloro silane

  ঘ

  Silane
• Neoprene is a polymer of
  ক

  Chloroprene

  খ

  Isoprene

  গ

  Isobutane

  ঘ

  Isopentane
• Neoprene is prepared by polymerisation of which of the following
  ক

  2-chloro-1, 3-butadiene

  খ

  2-methyl 1, 3-butadiene

  গ

  1,3-butadiene

  ঘ

  Acrylonitrile
• The polymer obtained by the condensation of hexamethylene diamine and adipic acid is :
  ক

  Nylon 66

  খ

  Terylene

  গ

  Tollen's

  ঘ

  Bakelite
• PVC is obtained by the polymerisation of
  ক

  Propane<br>

  খ

  Vinyl chloride

  গ

  Styrene

  ঘ

  Acetylene
• A polymeric substance used to make parachute is
  ক

  Rayon

  খ

  Viscose

  গ

  Cotton

  ঘ

  Terylene
• The name of plastic polymer from which combs, toys, bowls etc., can be made, is
  ক

  Polyurethane

  খ

  Polystyrene

  গ

  Metallic polysulphides

  ঘ

  Teflon
• The basic chemical building block of natural rubber obtained from trees is
  ক

  Isoprene

  খ

  Vinyl Chloride

  গ

  Acetylene

  ঘ

  Neoprene
• Natural rubber is the polymer of :
  ক

  Isoprene<br>

  খ

  Styrene<br>

  গ

  Butadiene<br>

  ঘ

  Ethylene
• The polymerisation of which often following is used in manufacturing of polythene in industry ?
  ক

  Methane

  খ

  Styrene

  গ

  Acetylene

  ঘ

  Ethylene
• The polymer used in making plastic crockery is
  ক

  Decron

  খ

  Nylon

  গ

  Bakelite<br>

  ঘ

  Melamine
• Which of the following is not an addition polymer?
  ক

  Nylon

  খ

  PVC

  গ

  Polythene

  ঘ

  Polystyrene
• The buffer action of blood is due to the presence of
  ক

  HCI and NaCI

  খ

  CI^– and ^2–

  গ

  CI^– and ^–

  ঘ

  ^– and H₂CO₃
• Aluminium chloride is
  ক

  Bronsted Lowry Acid

  খ

  Arrhenius Acid

  গ

  Lewis Acid

  ঘ

  Lewis Base
• The unit of ionic product of water (Kw) is :
  ক

  Mol² let^-1

  খ

  Mol² let^-2

  গ

  Mol^-1 let^-2

  ঘ

  Mol^-1 let^-1
• Haloarenes are more stable than haloalkanes due to
  ক

  Resonance effect

  খ

  Inductive effect

  গ

  Hyper conjugative effect

  ঘ

  All of them