Flocculation or coagulation of protoplasm is the
Options
(a) interchangeability between sol and gel states (b) ability to scatter that beam of light (c) erratic zig-zag movements of protoplasmic particles (d) ability of protoplasm […]
If the ratio of the rates of diffusion of two gases A and B is 4 : 1. Then the ratio of their densities in the same order is
Options
(a) 16 : […]
A secondary amine could be prepared readily from the starting material
Options
(a) alkyl isocyanide (b) alkyl cyanide (c) alkanamide (d) phthalimide and alkyl halide
Correct Answer:
alkyl isocyanide
Explanation:
Secondary amines […]
The bacteriosatic antibiotic among the following is
Options
(a) erythromycin (b) penicillin (c) aminoglycoside (d) ofloxacin
Correct Answer:
erythromycin
Explanation:
Antibiotics have either cidal (killing) effect or static (inhibitory) effect on microbes. Erythromycin […]
The most easily hydrolysed molecule under SN1 conditions is
Options
(a) allyl chloride (b) ethyl chloride (c) iso-propyl chloride (d) benzyl chloride
Correct Answer:
benzyl chloride
Explanation:
hydrolysis of alkyl halides depends on the […]
The carboxylic acid of least strength among the following is
Options
(a) p-nitrobenzoic acid (b) p-methylbenzoic acid (c) p-chlorobenzoic acid (d) p-methoxybenzoic acid
Correct Answer:
p-methoxybenzoic acid
Explanation:
No explanation available. Be the […]
In the electrolysis of aqueous solution of CuSO₄ using copper electrodes, the process that takes place at the anode is
Options
(a) SO₄²⁻ → SO₄ +2e⁻ (b) Cu → Cu⁺ + e⁻ (c) […]
Which one of the following has maximum laevorotatory nature
Options
(a) D-glucose (b) D-fructose (c) Sucrose (d) Invert sugar
Correct Answer:
D-fructose
Explanation:
When fructose solution is placed in a polariser it rotates the plane polarized […]
The most acidic among the following is
Options
(a) p-cresol (b) o-cresol (c) p-nitrophenol (d) p-chlorophenol
Correct Answer:
p-nitrophenol
Explanation:
No explanation available. Be the first to write the explanation for this question […]
Among the following the least thermally stable is
Options
(a) K₂CO₃ (b) Na₂CO₃ (c) BaCO₃ (d) Li₂CO₃
Correct Answer:
Li₂CO₃
Explanation:
No explanation available. Be the first to write the explanation for this […]
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