1. Which of the following is a colligative property?
a) Surface tension
b) Osmotic pressure
c) Viscosity
d) Density
Ans: (b) Osmotic pressure
2. What is the unit of molality?
a) mol/L
b) mol/kg
c) g/L
d) kg/mol
Ans:(b) mol/kg
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3. Which law governs the solubility of gases in liquids?
a) Henry’s law
b) Raoult’s law
c) Dalton’s law
d) Boyle’s law
Ans: (a) Henry’s law
4. Which type of deviation is shown by ethanol and water mixture?
a) Positive
b) Negative
c) No deviation
d) None of these
Ans: (b) Negative
5. Van’t Hoff factor (i) for K₂SO₄ in water is:
a) 1
b) 2
c) 3
d) 4
Ans: (c) 3
6. Which of the following statements is true for a galvanic cell?
a) Oxidation occurs at the cathode
b) Reduction occurs at the anode
c) Electrons flow from the anode to the cathode
d) Anode is positive
Ans: (c) Electrons flow from anode to cathode
7. What is the standard electrode potential of the hydrogen
electrode?
a) 0.00 V
b) 1.00 V
c) -0.76 V
d) 0.34 V
Ans: (a) 0.00 V
8. Which electrolyte is used in a dry cell?
a) H₂SO₄
b) KOH
c) NH₄Cl
d) NaOH
Ans: (c) NH₄Cl
9. Which of the following is a primary cell?
a) Lead storage battery
b) Fuel cell
c) Dry cell
d) Nickel-cadmium cell
Ans: (c) Dry cell
11. The rate of reaction is affected by:
a) Temperature
b) Concentration
c) Catalyst
d) All of these
Ans: (d) All of these
12. What is the unit of rate constant for a first-order reaction?
a) s⁻¹
b) mol L⁻¹ s⁻¹
c) L mol⁻¹ s⁻¹
d) L² mol⁻² s⁻¹
Ans: (a) s⁻¹
13. Half-life of a first-order reaction is:
a) Proportional to initial concentration
b) Independent of initial concentration
c) Inversely proportional to initial concentration
d) Depends on pressure
Ans: (b) Independent of initial concentration
14. The Arrhenius equation represents the effect of ______ on
reaction rate.
a) Catalyst
b) Temperature
c) Pressure
d) Concentration
Ans: (b) Temperature
15. Activation energy is the:
a) Minimum energy required for a reaction to occur
b) Maximum energy required for a reaction
c) Energy of the reactants
d) Energy of the products
Ans: (a) Minimum energy required for a reaction to occur
16. Which element is not a transition metal?
a) Fe
b) Zn
c) Cr
d) Mn
Ans: (b) Zn
17. KMnO₄ is used as:
a) Reducing agent
b) Oxidizing agent
c) Both
d) None
Ans: (b) Oxidizing agent
18. Lanthanide contraction is due to:
a) Poor shielding by 4f electrons
b) High nuclear charge
c) Both (a) and (b)
d) None of these
Ans: (c) Both (a) and (b)
19. Which of the following is a radioactive element?
a) Ce
b) U
c) La
d) Y
Ans: (b) U
20. Which of the following is a transition element?
a) Ca
b) Sc
c) Na
d) K
Ans: (b) Sc
21. Which of the following is a chelating ligand?
a) CN⁻
b) EDTA
c) NH₃
d) Cl⁻
Ans: (b) EDTA
22. Which theory explains the colour and magnetic properties of
coordination compounds?
a) VBT
b) Crystal field theory
c) Molecular orbital theory
d) Band Theory
Ans: (b) Crystal field theory
23. Oxidation state of Co in [Co(NH₃)₆]³⁺ is:
a) +1
b) +2
c) +3
d) 0
Ans: (c) +3
24. Which is a bidentate ligand?
a) NH₃
b) C₂O₄²⁻
c) CN⁻
d) Cl⁻
Ans: (b) C₂O₄²⁻
25. Which ligand causes the highest crystal field splitting?
a) CN⁻
b) Cl⁻
c) H₂O
d) OH⁻
Ans: (a) CN⁻
26. Which of the following will undergo SN1 reaction most easily?
a) CH₃Cl
b) (CH₃)₃CBr
c) CH₃CH₂Br
d) CH₃CH₂Cl
Ans: (b) (CH₃)₃CBr
27. Which of the following is used as an anaesthetic?
a) CHCl₃
b) CCl₄
c) CH₂Cl₂
d) CF₂Cl₂
Ans: (a) CHCl₃
28. Which of the following undergoes nucleophilic substitution
reaction most easily?
a) Benzyl chloride
b) Vinyl chloride
c) Chloroethane
d) Chlorobenzene
Ans: (a) Benzyl chloride
29. Freons are mainly used as:
a) Antiseptics
b) Refrigerants
c) Fertilizers
d) Medicines
Ans: (b) Refrigerants
30. DDT is a:
a) Polymer
b) Pesticide
c) Antibiotic
d) Fuel
Ans: (b) Pesticide
31. Phenol is more acidic than ethanol because:
a) Phenoxide ion is resonance stabilized
b) Ethoxide ion is resonance stabilized
c) Both are equally acidic
d) Phenol does not release H⁺ ions
Ans: (a) Phenoxide ion is resonance stabilized
32. Which reagent is used to distinguish between alcohols and
phenols?
a) Fehling’s solution
b) Iodoform test
c) Neutral FeCl₃
d) Lucas reagent
Ans: (c) Neutral FeCl₃
33. Which compound is commonly known as wood spirit?
a) Ethanol
b) Methanol
c) Phenol
d) Glycerol
Ans: (b) Methanol
34. Ethers can be cleaved by:
a) Dilute H₂SO₄
b) Conc. HBr
c) NaOH
d) KMnO₄
Ans: (b) Conc. HBr
35. Which of the following is used as an antiseptic?
a) Benzene
b) Phenol
c) Ethanol
d) Ether
Ans: (b) Phenol
36. Which test is used to distinguish between aldehydes and
ketones?
a) Lucas test
b) Tollens’ test
c) Fehling’s test
d) Both (b) and (c)
Ans: (d) Both (b) and (c)
37. Which of the following undergoes the iodoform test?
a) Benzaldehyde
b) Acetone
c) Formaldehyde
d) Ethanol
Ans: (b) Acetone
38. Which of the following has the highest boiling point?
a) Alcohol
b) Aldehyde
c) Ketone
d) Ether
Ans: (a) Alcohol
39. What is the functional group of carboxylic acids?
a) –OH
b) –COOH
c) –CHO
d) –CO–
Ans: (b) –COOH
40. The reduction of aldehydes leads to the formation of:
a) Alcohols
b) Ketones
c) Carboxylic acids
d) Esters
Ans: (a) Alcohols
41. Which amine reacts with Hinsberg reagent to form a soluble
product?
a) Primary amine
b) Secondary amine
c) Tertiary amine
d) Quaternary ammonium salt
Ans: (a) Primary amine
42.Which reagent is used to convert nitrobenzene into aniline?
a) LiAlH₄
b) Zn/HCl
c) K₂Cr₂O₇
d) NaOH
Ans: (b) Zn/HCl
43. Which of the following amines is most basic?
a) NH₃
b) CH₃NH₂
c) C₆H₅NH₂
d) (C₂H₅)₂NH
Ans: (d) (C₂H₅)₂NH
44. What is the product of the reaction between aniline and bromine
water?
a) o-Bromoaniline
b) p-Bromoaniline
c) 2,4,6-Tribromoaniline
d) Aniline does not react with bromine water
Ans: (c) 2,4,6-Tribromoaniline
45. Which of the following is a secondary amine?
a) NH₃
b) CH₃NH₂
c) (CH₃)₂NH
d) (CH₃)₃N
Ans: (c) (CH₃)₂NH
46. Glucose is an example of:
a) Disaccharide
b) Monosaccharide
c) Polysaccharide
d) Protein
Ans: (b) Monosaccharide
47. Which of the following is NOT a polysaccharide?
a) Starch
b) Glycogen
c) Cellulose
d) Sucrose
Ans: (d) Sucrose
48. The bond between two amino acids in a protein is called:
a) Glycosidic bond
b) Peptide bond
c) Phosphodiester bond
d) Hydrogen bond
Ans: (b) Peptide bond
49. Which of the following is an essential amino acid?
a) Glycine
b) Alanine
c) Lysine
d) Proline
Ans: (c) Lysine
50. Which nucleic acid is responsible for protein synthesis?
a) DNA
b) tRNA
c) rRNA
d) Both (b) and (c)
Ans: (d) Both (b) and (c)
