Which of the following acts as both reducing and oxidising agent
Which of the following acts as both reducing and oxidising agent Options (a) H₂SO₄ (b) H₂O₂ (c) KOH (d) KMnO₄…
7 years ago
UP2001
The oxidation number of As in H₂AsO₄⁻ is
The oxidation number of As in H₂AsO₄⁻ is Options (a) 6 (b) 5 (c) -7 (d) 9 Correct Answer: 5Explanation:No…
7 years ago
Pollen kitt substance is supplied by
Pollen kitt substance is supplied by Options (a) tapetum (b) endothecium (c) microspore mother cell (d) middle layer Correct Answer:…
7 years ago
0.765 gm of acid gives 0.55 g of CO₂ and 0.12 g of H₂O.Then find the ratio
0.765 gm of acid gives 0.55 g of CO₂ and 0.12 g of H₂O.Then find the ratio of the percentage…
7 years ago
Which is used in the preparation of azo-dyes
Which is used in the preparation of azo-dyes Options (a) Nitrobenzene (b) Aniline (c) Benzaldehyde (d) Chlorobenzene Correct Answer: AnilineExplanation:No…
7 years ago
The adjacent sheets are bonded together in graphite with
The two adjacent sheets are bonded together in graphite with Options (a) van der waals forces (b) ionic bonds (c)…
7 years ago
The constituents of porland cement are
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+clayExplanation:The essential…
7 years ago
Which of the following about fluorine is not correct
Which of the following about fluorine is not correct Options (a) The electron affinity of chlorine is greater than fluorine…
7 years ago
Haemophilia is due to mutation in
Haemophilia is due to mutation in Options (a) Y chromosome (b) X and Y chromosomes (c) X chromosome (d) autosomal…
7 years ago
Mutation cannot explain
Mutation cannot explain Options (a) mimicry (b) industrial melanism (c) connecting link (d) living fossils Correct Answer: living fossilsExplanation:First, there…
7 years ago