Class 12 Chemistry MCQ

Test your knowledge with important Class 12 Chemistry MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Class 12 Chemistry MCQs on Bissoy. Bissoy App

• Which of the following has the weakest intermolecular forces?
  ক

  Buna-N

  খ

  Nylon-6,6

  গ

  Polythene

  ঘ

  Polystyrene
• Which of the following is not an elastomer?
  ক

  Buna-S

  খ

  Buna-N

  গ

  PVC

  ঘ

  Neoprene
• Which of the following is not a natural polymer?
  ক

  Rayon

  খ

  Starch

  গ

  Cellulose

  ঘ

  RNA
• Which of the following is soluble in water?
  ক

  Insulin

  খ

  Elastin

  গ

  Fibroin

  ঘ

  Collagen
• Identify the correct statement.
  ক

  Peptide bond is formed by the loss of water molecule

  খ

  A protein is made of only one type of amino acid

  গ

  Dipeptides consists of different amino acids

  ঘ

  Glycylalanine is a tripeptide
• Which of the following element has the highest melting point?
  ক

  Co

  খ

  Zn

  গ

  Ni

  ঘ

  Cr
• Which of the following has the highest density?
  ক

  Os

  খ

  Zn

  গ

  Cr

  ঘ

  Cd
• Which of the following has the highest atomic number?
  ক

  Scandium

  খ

  Titanium

  গ

  Cadmium

  ঘ

  Lanthanum
• Which of the following is radioactive in nature?
  ক

  Oxygen

  খ

  Sulphur

  গ

  Tellurium

  ঘ

  Polonium
• Which of the following statements is not correct?
  ক

  The efficiency of a solid catalyst depends upon its surface area

  খ

  Catalyst operates by providing alternate path for the reaction that involves a lower energy of activation

  গ

  Catalyst lowers the energy of activation of the forward reaction without affecting the energy or activation of the backward reaction

  ঘ

  Catalyst does not affect the overall enthalpy change of the reaction
• Which of the following is the correct order of reactivity of metals?
  ক

  Zn > Mg > Fe > Cu > Ag

  খ

  Zn > Mg > Fe > Ag > Cu

  গ

  Mg > Zn > Fe > Ag > Cu

  ঘ

  Mg > Zn > Fe > Cu > Ag
• Which of the following is a colligative property?
  ক

  Relative lowering of fluid pressure

  খ

  Decrease in boiling point

  গ

  Decrease in freezing point

  ঘ

  Change in volume after mixing
• Which among the following statements is correct?
  ক

  NaCl is a paramagnetic substance

  খ

  Paramagnetic substances behave like an insulator

  গ

  Cobalt is an Antiferromagnetic substance

  ঘ

  On heating, ferrimagnetic substanceslose ferrimagnetism