The S.I. unit of radioactivity is
Options
(a) Roentgen (b) Rutherford (c) Curie (d) Becquerel
Correct Answer:
Becquerel
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
In the case of auto catalysis
Options
(a) product catalyses (b) solvent catalyses (c) reactant catalyses (d) heat produced in the reaction catalyses
Correct Answer:
product catalyses
Explanation:
No explanation available. Be the […]
Chloride ion and potassium ion are isoelectronic. Then
Options
(a) potassium ion is relatively bigger (b) depends on the other cation and anion (c) their sizes are same (d) chlorine ion is bigger […]
Chemical bond implies
Options
(a) attraction and repulsion (b) attraction and repulsion balanced at a particular distance (c) attraction (d) repulsion
Correct Answer:
attraction and repulsion balanced at a particular distance
Explanation:
No […]
The total number of canines in the permanent dental set of humans is
Options
(a) 8 (b) 12 (c) 6 (d) 4
Correct Answer:
4
Explanation:
No explanation available. Be the first to […]
A gamete normally contains
Options
(a) many alleles of a gene (b) all alleles of a gene (c) two alleles of a gene (d) one allele of a gene
Correct Answer:
many alleles […]
HIV decreases natural immunity of body by
Options
(a) attacking T-lymphocytes (b) attacking B-lymphocytes (c) destroying antibodies (d) destroying erythrocytes
Correct Answer:
attacking T-lymphocytes
Explanation:
After infection HIV starts to destroy the T- […]
An organic acid without a carboxylic acid group is
Options
(a) picric acid (b) oxalic acid (c) vineger (d) ascorbic acid
Correct Answer:
picric acid
Explanation:
No explanation available. Be the first to […]
When one of the slits of Young’s experiment is covered with a transport sheet of thickness 4.8 mm, the central fringe shifts to a position originally occupied by the 30th bright fringe. What should be […]
In nuclear fission, the percentage of mass converted into energy is about
Options
(a) 10% (b) 0.01% (c) 0.10% (d) 1%
Correct Answer:
0.10%
Explanation:
No explanation available. Be the first to write […]
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