Which of the following organism does not evolve oxygen in photosynthesis?
Options
(a) higher plants (b) Anabaena (c) Rhodospirillum (d) Funaria
Correct Answer:
Rhodospirillum
Explanation:
No explanation available. Be the first to write […]
In cockroach, the ootheca is formed by the secretion of
Options
(a) phallic gland (b) collaterial gland (c) mushroom gland (d) conglobate gland
Correct Answer:
collaterial gland
Explanation:
No explanation available. Be the first […]
The volume of 2.8g of carbon monoxide at 27⁰C and 0.821 atm pressure is (R = 0.0821 lit. atm mol⁻¹ K⁻¹)
Options
(a) 0.3 litre (b) 3 litre (c) 1.5 litre (d) 30 […]
The oxyacid of phosphorus, in which phosphorus has the lowest oxidation state, is
Options
(a) metaphosphoric acid (b) pyrophosphoric acid (c) orthophosphoric acid (d) hypophosphorus acid
Correct Answer:
hypophosphorus acid
Explanation:
No explanation […]
Rhododendron is characteristic of vegetation of
Options
(a) tropical zone (b) gangetic plains (c) alpine zone (d) mangrove belt
Correct Answer:
alpine zone
Explanation:
No explanation available. Be the first to write the […]
In which process,fused sodium hydroxide is eletrolysed at a 330⁰C temperature for extraction of sodium
Options
(a) Castner’s process (b) Cyanide process (c) Down’s process (d) both (b) and (c)
Correct Answer:
Castner’s […]
Which of the following statements is correct regarding the drawbacks of raw rubber
Options
(a) It is plastic in nature (b) It has little durability (c) It has large water-absorption capacity (d) all […]
When the oxygen is inadequate during respiration the condition is called
Options
(a) hypoxia (b) pleurisy (c) asphyxia (d) anoxia
Correct Answer:
hypoxia
Explanation:
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Isotopes used for providing semi conservative replication of DNA are
Options
(a) N¹⁴ and P³¹ (b) N¹⁴ and C¹⁴ (c) N¹⁴ and N¹⁵ (d) C¹⁴ and P³¹
Correct Answer:
N¹⁴ and N¹⁵
Explanation: […]
Mutations caused by mutagenic agents are termed as
Options
(a) spontaneous mutations (b) induced mutations (c) chemical mutations (d) chromosomal mutations
Correct Answer:
induced mutations
Explanation:
No explanation available. Be the first to […]
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