Class/Course - Class XII

Subject - Chemistry

Total Number of Question/s - 4730


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  • 1. The Solid State - Quiz

    1. In a hypothetical solid, C atoms are found to form cubical close-paced lattice. A atoms occupy all tetrahedral voids and B atoms occupy all tetrahedral voids and B atoms occupy all octahedral voids

    A and B atoms are of appropriate size, so that there is no distortion in the ccp lattice of C atoms. Now, if a plane as shown in the following figure is cut, then the cross section of this plane will look like
    a)
    b)
    c)
    d)

    2. Which of the following has Frenkel defect?
    a) Sodium chloride
    b) Graphite
    c) Silver bromide
    d) Diamond

  • 2. Solutions - Quiz

    1. The relative lowering of vapour pressure is equal to the ratio between the number of
    a) solute molecules to the solvent molecules
    b) solute molecules to the total molecules in solution
    c) solvent molecules to the total molecules in the solution
    d) solvent molecules to the total number of ions of the solute

    2. The vapour pressure of two liquids P and Q are 80 and 60 torr, respectively. The total vapour pressure of solution obtained by mixing 3 moles of P and 2 moles of Q would be
    a) 140 torr
    b) 20 torr
    c) 68 torr
    d) 72 torr

  • 3. Electrochemistry - Quiz

    1. During the electrolysis of the aqueous solution of copper sulpahte using Pt electrodes, the reaction taking place at anode electrode is
    a) Cu2+ + 2e- → Cu
    b) Cu → Cu2+ + 2e-
    c) 2H2O → 4H + O2 + 4e-
    d) H2O + e- $\rightarrow$ + 1/2H2

    2. Given $E^{\circleddash}_{Ag^{\oplus}|Ag} = +0.80V; E^{\circleddash}_{Co^{2+}|Co} = -0.28V, E^{\circleddash}_{Cu^{2+}|Cu} = +0.34 V, E^{\circleddash}_{Zn^{2+}|Zn} = -0.76V$
    Which metal will correct faster?
    a) Ag
    b) Cu
    c) Co
    d) Zn

  • 4. Chemical Kinetics - Quiz

    1. For the reaction : 2HI → H2 + I2, the expressions -d(HI)/dt reprsents
    a) The rate of formation of HI
    b) The rate of disappearance of HI
    c) The instantaneous rate of the reaction
    d) The average rate of reaction

    2. The rate of the first order of reaction is 1.5 × 10-2 mol L-1 min-1 at 0.5 M concentration of the reactant. The half-life of the reaction is
    a) 0.383 min
    b) 23.1 min
    c) 8.73 min
    d) 7.53 min

  • 5. Surface Chemistry - Quiz

    1. The rate of chemisorption:
    a) Decreases with increase of pressure
    b) Increases with increase of pressure
    c) Is independent of pressure
    d) Is independent of temperature

    2. Which of the following catalyst is used during the hydrogenation of oil?
    a) Fe
    b) Ni
    c) Pt
    d) Mo

  • 6. General Principles and Processes of Isolation of Elements - Quiz

    1. Complex formation for cyanide method is used for the extraction of
    a) Cu
    b) Fe
    c) Hg
    d) Ag

    2. Which of the following metal can be reducted by carbon reduction as well as self-reduction?
    a) Fe
    b) Al
    c) Pb
    d) None of these

  • 7. The p-Block Elements - Quiz

  • 8. The d-and f-Block Elements - Quiz

    1. The lanthanide contraction relates to
    a) Atomic radii
    b) Atomic as well as M3+ radii
    c) Valence electrons
    d) Oxidation states

    2. Which one of th following is false for Hg?
    a) It can evolve hydrogen from H2S
    b) It is metal
    c) It has high specific heat
    d) It is less reactive than hydrogen

  • 9. Coordination Compounds - Quiz

    1. [Cr(H2O)6Cl3 (atomic number of Cr = 24) has a magnetic moment of 3.83 BM. The correct distribution of 3d-electrons in the chromium present in the complex is
    a) 3d1xy, 3d1yz, 3d1zx
    b) 3d1xy, 3d1yz, 3d1z2
    c) 3d1(x2 - y2), 3d1z2, 3d1zx
    d) 3d1xy, 3d1(x2 - y2), 3d1xz

    2. Select the correct IUPAC name for
    [Ti(π - C5H5)2 (σ - C5H5)2]:
    a) bis (η5 - cyclopentadiene) bis (cyclopentadiene) titanate(IV)
    b) bis (η5 - cyclopentadienyl) bis (cyclopentadienyl) titanium(IV)
    c) bis (cyclopentadienyl) bis (η5 - cyclopentadienyl) titanate(IV)
    d) bis (η5 - cyclopentadiene) bis (cyclopentadiene titanium(IV)

  • 10. Haloalkanes and Haloarenes - Quiz

  • 11. Alcohols, Phenols and Ethers - Quiz

    1. In Zeisel method for the determination of methoxyl groups, a sample of 2.68 gm of a compound (A) gave 14.08 gm of AgI. If the molecular weight of compound (A) is 134, the number of (-OCH3) groups(s) in the compound (A) is:
    a) 1
    b) 2
    c) 3
    d) 4

    2. Which of the following is not used as inhalation anaesthetic?
    a) Ethoxyethane
    b) Anethole
    c) Ethrane
    d) Isoflurane

  • 12. Aldehydes, Ketones and Carboxylic Acids - Quiz

    1. Acetalidehyde reacts with
    a) electrophiles only
    b) nucleophiles only
    c) free radicals only
    d) both electrophiles and nucleophiles

    2. Which of the following represents the correct order of acidity in the given compounds?
    a) FCH2COOH > CH3COOH > BrCH2COOH > ClCH2COOH
    b) BrCH2COOH > ClCH2COOH > FCH2COOH > CH3COOH
    c) FCH2COOH > ClCH2COOH > BrCH2COOH > CH3COOH
    d) CH3COOH > BrCH2COOH > ClCH2COOH < FCH2COOH

  • 13. Amines - Quiz

  • 14. Biomolecules - Quiz

    1. The correct statement in respect of protein haemoglobin is that it
    a) functions as a catalyst for biological reactions.
    b) maintains blood sugar level.
    c) acts as an oxygen carrier in the blood.
    d) forms antibodies and offers resistance to diseases.

    2. The functional group which is found in amino acid is:
    a) -COOH
    b) -NH2
    c) -CH3
    d) Both (a) and (b)

  • 15. Polymers - Quiz

  • 16. Chemistry in Everyday Life - Quiz

  • 17. Nuclear Chemistry - Quiz

    1. Which of the following is artificial radioactive series?
    a) 4n + 1
    b) 4n + 2
    c) 4n
    d) 4n + 3

    2. The SI unit of radioactivity is
    a) Curie
    b) Micro-curie
    c) Rutherford
    d) Becquerel

  • 18. p-Block Group 16 Elements (Oxygen Family) - Quiz

    1. Hypo is used in photography because of its
    a) Complexing ability
    b) Solubility in water
    c) Reducing behaviour
    d) Sensitivity to light

    2. Which shows maximum catenation property?
    a) Se
    b) Te
    c) Po
    d) S

  • 19. p-Block Group 17 Element (Halogen Family) - Quiz

    1. HBr and HI may be obtained by heating bromide and iodine with syrupy phosphoric acid not with H2SO4 because H2SO4 is
    a) A weaker acid
    b) Less stable
    c) An oxidising agent
    d) A reducing agent

    2. Which one of the following represents the raction between fluorine and cold NaOH (dil.)?
    a) 2F2 + 4NaOH $\rightarrow$ 4NaF + 2H2O + O2
    b) 3F2 + 6NaOH $\rightarrow$ 5NaF + NaFO3 + 3H2O
    c) F2 + 2NaOH $\rightarrow$ NaF + NaOF + H2O
    d) 2F2 + 2NaOH $\rightarrow$ 2NaF + OF2 + H2O

  • 20. p-Block Group 18 Element (Inert Gases) - Quiz

    1. Xenon tetrafluoride has hybridisation and structure as
    a) sp3 tetrahedral
    b) sp3d2 square planar
    c) sp3d2 pyramidal
    d) sp3d3 octahedral

    2. Xenon best reacts with
    a) the most electropositive element
    b) the most electronegative element
    c) the hydrogen halides
    d) non-metals

  • 21. Grignard Reagents & Organometallic Compounds - Quiz

    1. (A) is:
    a)
    b)
    c)
    d) None of these

    2. Me3C-MgCl on reaction with D2O produces:
    a) Me3CD
    b) Me3COD
    c) (CD)3CD
    d) (CD)3COD

  • 22. Oxydation 7 Reduction of Organic Compounds - Quiz

    1.
    The products (A), (B) and (C) are:
    a)
    b)
    c)
    d)

    2.
    The product (A) is:
    a)
    b)
    c)
    d)

  • 23. Aliphetic & Aromatic Aldehyde and Ketones - Quiz

    1. The distillation of bleaching powder and acetone gives:
    a) CHCl3
    b) Chloral
    c) CH3Cl
    d) CCl4

    2. What happens when CCl4 is treated with AgNO3 solution?
    a) NO2 is evolved.
    b) A white precipitate of AgCl is formed
    c) CCl4 will dissolves in AgNO3 solution
    d) No reaction

  • 24. Carboxlic Acid & Its Derivatives - Quiz

    1. Which of the following tests would help in the distinction of HCOOH and CH3COOH?
    a) Treatment with Tollens reagent
    b) Treatment with NaOH
    c) Treatment with Na
    d) Formation of their respective amides

    2. The decreasing order of ester formation with acetic acid in the presence of $H^{\oplus }$ is:

    a) (I)>(III)>(II)>(IV)
    b) (I)>(II)>(III)>(IV)
    c) (IV)>(II)>(III)>(I)
    d) (IV)>(III)>(II)>(I)

  • 25. Organic Compounds with Functional Group - Quiz

    1. Tertiary nitro compounds cannot show tautomerism because:
    a) They are very stable.
    b) They isomerise to give secondary nitro compounds.
    c) They do not have labile hydrogen atom.
    d) They are highly reactive.

    2. Which of the following represents the poisonous gas which caused the tragedy in Bhopal in 1984?
    a) CH3C=N=S
    b) CH3-N=C=O
    c) CH3-N=C=S
    d) CH3-O-N=C

  • 26. Synthetic and Natural Polymer - Quiz

    1. Which of the following is used in paints ?
    a) Terylene
    b) Chloroprene
    c) Glyptal
    d) Nylon

    2. Which one is a synthetic polymer?
    a) Starch
    b) Silk
    c) Protein
    d) Neopprene

  • 27. p-Block Group 15 Elements (Nitrogen Family - Quiz

    1. Basicity of H3PO4 and H3PO3 are
    a) 3, 3
    b) 3, 2
    c) 2, 3
    d) 2, 2

    2. NH3 has pyramidal structure with HNH bond angle of 1070 It forms complexes with cation which of the following does not form complex with NH3?
    a) Ag
    b) Cu2+
    c) Cd2+
    d) Pb2+