Which of the following is a Lewis acid
Which of the following is a Lewis acid
Options
(a) Cl⁻ (b) H₃O⁺ (c) BF₃ (d) C₂H₅OH
Correct Answer:
BF₃
Explanation:
No explanation available. Be the first to write the explanation for this […]
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Aluminium deposited vapours on glass forms a good mirror essentially because
Aluminium deposited vapours on glass forms a good mirror essentially because
Options
(a) it has better shine than Ag (b) it does not scratch (c) coating is much more smoother (d) it does […]
Aluminium oxide is not reduced by chemical reaction since
Aluminium oxide is not reduced by chemical reaction since
Options
(a) reducing agent contaminate (b) the process pollute the environment (c) aluminium oxide is highly stable (d) aluminium oxide is reactive
Correct Answer: […]
In Gabriel phthalimide synthesis, the compound obtained is
In Gabriel phthalimide synthesis, the compound obtained is
Options
(a) p-amine (b) p-alcohol (c) sec-amine (d) amino alcohol
Correct Answer:
p-amine
Explanation:
No explanation available. Be the first to write the explanation for […]
In Lassaigne’s test red colour precipitate is obtained which is due to formation
In Lassaigne’s test red colour precipitate is obtained which is due to formation of
Options
(a) FeCNS (b) Fe(CNS)₂ (c) NaCNS (d) Fe(CNS)₃
Correct Answer:
Fe(CNS)₃
Explanation:
No explanation available. Be the first […]
The change in oxidation state of sulphur when sulphur dioxide is passed
The change in oxidation state of sulphur when sulphur dioxide is passed in an acidified K₂Cr₂O₇ solution is from
Options
(a) 4 to 0 (b) 4 to 2 (c) 4 to 6 (d) […]
Which among the following is an extensive property of the system
Which among the following is an extensive property of the system
Options
(a) Temperature (b) volume (c) Refractive index (d) Viscosity
Correct Answer:
volume
Explanation:
Volume is an extensive property because it depends upon […]
Biuret test is not given by
Biuret test is not given by
Options
(a) proteins (b) carbohydrates (c) polypeptides (d) urea
Correct Answer:
carbohydrates
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Aromatic hydrocarbon shows mostly
Aromatic hydrocarbon shows mostly
Options
(a) substitution electrophilic reactions (b) addition electrophilic reactions (c) substitution nucleophilic reactions (d) addition nucleophilic reactions
Correct Answer:
substitution electrophilic reaction
Explanation:
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The oxidation number of oxygen in O₂PtF₆ is
The oxidation number of oxygen in O₂PtF₆ is
Options
(a) zero (b) 1/2 (c) 1 (d) -1/2
Correct Answer:
1/2
Explanation:
No explanation available. Be the first to write the explanation for this […]