Pyrethrin is got from
Options
(a) Azadirachta indica (b) Chrysanthemum cinerariifolium (c) Urtica dioica (d) Tagetes erecta
Correct Answer:
Chrysanthemum cinerariifolium
Explanation:
No explanation available. Be the first to write the explanation for […]
Some blue green algae can be used as biofertilizer as they are
Options
(a) Photosynthetic (b) Surrounded by mucilage (c) Growing every where (d) Capable of fixing nitrogen
Correct Answer:
Capable of fixing […]
Which of the following compound react with NaHCO3 solution to give sodium salt and carbon dioxide
Options
(a) Phenol (b) Acetic acid (c) n-hexanol (d) Nitric acid
Correct Answer:
Acetic acid
Explanation:
CH₃COOH(Acetic […]
Caprolactum is the monomer of
Options
(a) nylon-6 (b) glyptal (c) dacron (d) melamine
Correct Answer:
nylon-6
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
When formaldehyde is polymerised in the presence of dilute H₂SO₄, the compound obtained is
Options
(a) paraldehyde (b) para-formaldehyde (c) metaldehyde (d) trioxyformaldehyde
Correct Answer:
trioxyformaldehyde
Explanation:
No explanation available. Be the first […]
Which of the following trivalent ion has the largest atomic radii in the lanthanide series
Options
(a) La (b) Pm (c) Ce (d) Lu
Correct Answer:
La
Explanation:
No explanation available. Be the […]
Concentrated sulphuric acid is always dilute by adding
Options
(a) water to acid (b) alcohol to acid (c) acid to water (d) distilled water to acid
Correct Answer:
acid to water
Explanation:
Concentrated […]
When 10 g of a non-volatile solute is dissolved in 100 g of benzene , it raises boiling point by 1⁰ C then molecular mass of the solute is (Kb for benzene = 2.53 km⁻¹) […]
The ratio of radii of planets A and B is K₁ and ratio of accelerations due to gravity on them is K₂. The ratio of escape velocities from them will be
Options
(a) […]
Which of the following cytoplasmic granules contain histamine?
Options
(a) basophils (b) eosinophils (c) acidophils (d) neutrophils
Correct Answer:
basophils
Explanation:
No explanation available. Be the first to write the explanation for this […]
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