Which of the following acts as both reducing and oxidising agent
Options
(a) H₂SO₄ (b) H₂O₂ (c) KOH (d) KMnO₄
Correct Answer:
H₂O₂
Explanation:
No explanation available. Be the first to write the […]
The oxidation number of As in H₂AsO₄⁻ is
Options
(a) 6 (b) 5 (c) -7 (d) 9
Correct Answer:
5
Explanation:
No explanation available. Be the first to write the explanation for this […]
Pollen kitt substance is supplied by
Options
(a) tapetum (b) endothecium (c) microspore mother cell (d) middle layer
Correct Answer:
tapetum
Explanation:
No explanation available. Be the first to write the explanation for […]
0.765 gm of acid gives 0.55 g of CO₂ and 0.12 g of H₂O.Then find the ratio of the percentage of carbon and hydrogen
Options
(a) 19 : 2 (b) 18 : 11 […]
Which is used in the preparation of azo-dyes
Options
(a) Nitrobenzene (b) Aniline (c) Benzaldehyde (d) Chlorobenzene
Correct Answer:
Aniline
Explanation:
No explanation available. Be the first to write the explanation for this […]
The two adjacent sheets are bonded together in graphite with
Options
(a) van der waals forces (b) ionic bonds (c) metallic bonds (d) covalent bonds
Correct Answer:
van der waals forces
Explanation:
The two […]
The constituents of porland cement are
Options
(a) CaCO₃+clay+sand (b) CaCO₃+aluminium silicate (c) CaCO₃+clay+SiO₂ (d) CaCO₃+gypsum+clay
Correct Answer:
CaCO₃+gypsum+clay
Explanation:
The essential constituents of portland cement are CaO, silica, alumina, magnesium oxide, and […]
Which of the following about fluorine is not correct
Options
(a) The electron affinity of chlorine is greater than fluorine (b) The bond energy of fluorine is less than chlorine (c) Fluorine does […]
Haemophilia is due to mutation in
Options
(a) Y chromosome (b) X and Y chromosomes (c) X chromosome (d) autosomal chromosomes
Correct Answer:
X chromosome
Explanation:
No explanation available. Be the first to […]
Mutation cannot explain
Options
(a) mimicry (b) industrial melanism (c) connecting link (d) living fossils
Correct Answer:
living fossils
Explanation:
First, there are no living fossil animals; either it’s a fossil or an […]
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