Question Bank for Chemistry in Class XII standard : Just Exam

Class/Course - Class XII

Subject - Chemistry

Total Number of Question/s - 4730

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1. The Solid State - Quiz

1. The ratio of the volume of a tetragonal lattice unit cell to that of a hexagonal lattice unit cell is (both having same respective lenghts)
a) $\frac{\sqrt{3}}{2}abc$
b) $\frac{2}{3\sqrt{3}}$
c) $\frac{2}{\sqrt{3}}\frac{a^{2}b}{b}$
d) 1

2. Which of the following metal oxides is anti-ferromagnetic in nature?
a) MnO₂
b) TiO₂
c) VO₂
d) CrO₂
2. Solutions - Quiz

1. Which of the following 0.10M aqueous solution will have the lowest freezing point?
a) Al₂(SO₄)₃
b) C₅H₁₀O₅
c) KI
d) C₁₂H₂₂O₁₁

2. The freezing point of 1m NaCl solution assuming NaCl to be 100% dissociated in water is (K_f = 1.86 K m^-1)
a) -1.86⁰C
b) -3.72⁰C
c) +1.86⁰C
d) +3.72⁰C
3. Electrochemistry - Quiz

1. The standard electrode potential of metal of ion (Ag/Ag^⊕) and metal-insoluble salt salt anion (Ag|AgCl | $Cl^{\circleddash}$) are related
a) $E^{\circleddash}_{Ag^{\oplus}|Ag}$ = $E^{\circleddash}_{Cl^{\circleddash}|AgCl|Ag} + \frac{RT}{F}ln K_{sp}$
b) $E^{\circleddash}_{Cl^{\circleddash}|AgCl|Ag}$ = $E^{\circleddash}_{Ag^{\oplus}|Ag} + \frac{RT}{F}ln K_{sp}$
c) $E^{\circleddash}_{Ag^{\oplus}|Ag}$ = $E^{\circleddash}_{Cl^{\circleddash}|AgCl|Ag} + \frac{RT}{F}ln \frac{\left [Cl^{\circleddash} \right ]}{K_{sp}}$
d) $E^{\circleddash}_{Cl^{\circleddash}|AgCl|Ag}$ = $E^{\circleddash}_{Ag^{\oplus}|Ag} + \frac{RT}{F}ln \frac{K_{sp}}{\left [Cl^{\circleddash} \right ]}$

2. What is the potential of the cell containing two hydrogen electrodes as represented below?

a) -0.236 V
b) -0.0591 V
c) 0.236
d) 0.0591 V
4. Chemical Kinetics - Quiz

1. If the rate of a reaction is equal to rate reaction, the order of the reaction is
a) 2
b) 3
c) 0
d) 1

2. A → B, ΔH = -10kJ mol^-1. E_A(f) = 50kJ mol^-1, then E_a of B → A will be
a) 40 kJ mol^-1
b) 50 kJ mol^-1
c) -50 kJ mol^-1
d) 60kJ mol^-1
5. Surface Chemistry - Quiz

1. Which is not the correct statement for a catalyst?
a) It does not alter E_{a

b) The surface of a catalyst adsorbs reactants

c) Catalyst may form intermediates with reactants
d) Action of enzyme catalyst is always specific

2. Aluminium hydroxide forms a positively charged sol. Which of the following ionic substance should be most effective in coagulating the sol?

a) NaCl

b) CaCl₂

c) Fe₂(SO₄)₃
d) K₃PO₄}
6. General Principles and Processes of Isolation of Elements - Quiz

1. Which of the following metals can be extracted by smelting?
a) Aluminium
b) Magnesium
c) Iron
d) None of these

2. Extraction of silver from Ag₂S by the use of sodium cyanide is an example of
a) Roasting
b) Hydrometallurgy
c) Electrometallurgy
d) Smelting.
7. The p-Block Elements - Quiz
8. The d-and f-Block Elements - Quiz

1. Which transition metal has lowest density?
a) Sc
b) Ti
c) Zn
d) La

2. Which of the following is not the characteristic of zinc?
a) It is volatile metal
b) It dissolves in alkali forming sodium zincate
c) It is brittle at very high temperatures
d) Zinc dust is used as a reducing agent
9. Coordination Compounds - Quiz

1. Which of the following can be termed as mixed complex?
a) K₄[Fe(CN)₆]
b) [Cu(NH₃)₄]SO₄
c) [Co(NH₃)₄NO₂Cl]Cl
d) K₂FeSO₄

2. Which of the following organometallic compound is a σ and π bonded?
a) [Fe(η⁵ - C₅H₅)₂]
b) K[PtCl₃(η²-C₂H₄)]
c) [Co(CO)₅NH₃]²⁺
d) [Fe(CH₃)₃]
10. Haloalkanes and Haloarenes - Quiz
11. Alcohols, Phenols and Ethers - Quiz

1. Brandy is distilled from fermented fruits, rum is distilled from molasses, Bourbon whisky from corn, rye whisky from rye, scotch whisky from barley, Irish whisky from potatoes, Saki from rice, and beer from……
a) Malt
b) Yeast
c) Grapes
d) Apples

2. HBr reacts fastest with:
a) 2-Methyl prpan-2-ol
b) Propan-1-ol
c) Propan-2-ol
d) 2-Methyl propan-1-ol
12. Aldehydes, Ketones and Carboxylic Acids - Quiz

1. In which of the following the number of carbon atoms does not remain same when carboxylic acid is obtained by oxidation?
a) CH₃COCH₃
b) CCl₃CH₂CHO
c) CH₃CH₂CH₂OH
d) CH₃CH₂CHO

2. When m-chlorobenzaldehyde is treated with 50% KOH solution, the product(s) obtained is (are)
a)
b)
c)
d)
13. Amines - Quiz
14. Biomolecules - Quiz

1. The enzyme which hydrolyses triglycerides to fatty acids and glycerol is called:
a) Maltose
b) Lipase
c) Zymase
d) Pepsin

2. Which of the following statements is incorrect?
a) α-D-glucose are enantiomers.
b) D-Glyceraldehyde and L-glyceraldehyde are epimers.
c) The reserve carbohydrate of animals is glycogen.
d) Few aldohexoses which react with phenylhydrazine to give identical osazones are epimers.
15. Polymers - Quiz
16. Chemistry in Everyday Life - Quiz
17. Nuclear Chemistry - Quiz

1. One curie of activity is equivalent to
a) 3.7 x 10⁷ disintegrations per second
b) 3.7 x 10¹⁰ disintegrations per second
c) 3.7 x 10⁴ disintegrations per second
d) None

2. Atoms with the same atomic number and different mass members are called
a) Isobars
b) Isomers
c) Isotones
d) Isotopes
18. p-Block Group 16 Elements (Oxygen Family) - Quiz

1. Which one of the following is an amphoteric oxide?
a) MnO₂
b) ZnO
c) CaO
d) CO₂

2. About H₂SO₄, which of the following statements is incorrect?
a) It acts as a reducing agent
b) It acts as an oxidising agent
c) It acts as dehydrating agent
d) It is highly viscous
19. p-Block Group 17 Element (Halogen Family) - Quiz

1. The halogen having the smallest covalent radius is
a) I
b) Cl
c) Br
d) F

2. The boiling points of halogens increase with increase in molecular weight, it is because
a) As the size increases molecules undergo association leading to higher stability
b) Bond strength increases due to increase in electronegativity
c) van der Waals force increase with increase in number of electrons per mole
d) None of the above
20. p-Block Group 18 Element (Inert Gases) - Quiz

1. Inert gases such as helium behave like ideal gases over a wide range of temperature. However, they condense into the solid state at very low temperature. It indicates that at very low temperature there is a
a) weak attractive force between the atoms
b) weak repulsive force between the atoms
c) strong attractive forces between the atoms
d) strong repulsive force between the atoms

2. Compounds formed when the noble gases get entrapped in the cavities of crystal lattices of certain organic and inorganic compouns are known as
a) interstitial compounds
b) clathrates
c) hydrates
d) picrates
21. Grignard Reagents & Organometallic Compounds - Quiz

1. Benzonitrile on reaction with C₂H₅MgBr, followed by hydrolysis, gives
a)
b)
c)
d)

2. The order of reactivity of phenyl magnesium bromide with the following compounds is:
a) II > III > I
b) I > III > II
c) II > I > III
d) All react with the same rate
22. Oxydation 7 Reduction of Organic Compounds - Quiz

1. Which of the following compounds will not give haloform reaction?
a) α-Phenyl ethanol
b) Acetopenone
c) Ethyl bromide
d) (MeCO)₂O

2.
(A) is:
a)
b)
c)
d) No reaction
23. Aliphetic & Aromatic Aldehyde and Ketones - Quiz

1. Which of the following undergoes nitration most readily?
a) Toluene
b) Styrene
c) Chlorobenzene
d) Phenol

2. Which of the following is not aromatic in nature?
a)
b)
c)
d)
24. Carboxlic Acid & Its Derivatives - Quiz

1. Mark the correct order of increasing reactivity.
a) CH₃CONH₂ < CH₃COOC₂H₅ < CH₃COCl
b) CH₃COOC₂H₅ < CH₃COCl < CH₃CONH₂
c) CH₃COCl < CH₃CONH₂ < CH₃COOC₂H₅
d) CH₃COOC₂H₅ < CH₃CONH₂3COCl

2. The reaction of HCOOH with conc. H₂SO₄ gives:
a) CO₂
b) CO
c) Oxalic acid
d) Acetic acid
25. Organic Compounds with Functional Group - Quiz

1. Methyl cyanide on treatment with methyl magnesium bromide followed by subsequent hydrolysis gives:
a) Propanone
b) Ethanone
c) Ethanal
d) Propanal

2. Which of the following groups will facilitate the electrophilic attack on benzene ring?
a) -NO₂
b) -CHO
c) -Cl
d) -SO₃H
26. Synthetic and Natural Polymer - Quiz

1. Which of the following is not a condensation polymer?
a) Nylon-6,6
b) PTFE
c) Dacron
d) Glyptal

2. The interparticle forces between linear chains in Nylon-6,6 are:
a) H-bonds
b) Covalent bonds
c) Ionic bonds
d) Coordinate bonds
27. p-Block Group 15 Elements (Nitrogen Family - Quiz

1. The reaction between NH₂^⊝ and N₂O gives
a) NO
b) N₂O₅
c) NH₂NH₂
d) N₃^⊝

2. Silver chloride issolves in excess of NH₄OH. The cation present in solution is
a) [Ag(NH₃)]^⊕
b) [Ag(NH₃)4]^⊕
c) [Ag(NH₃)2]^⊕
d) [Ag(NH₃)₆]^⊕

Color

Chemistry [Class XII]

Class/Course - Class XII

Subject - Chemistry

Total Number of Question/s - 4730