PB1997 Archives

Which of the following organism does not evolve oxygen in photosynthesis? Options (a) higher plants (b) Anabaena (c) Rhodospirillum (d)…

5 years ago

In cockroach, the ootheca is formed by the secretion of Options (a) phallic gland (b) collaterial gland (c) mushroom gland…

5 years ago

The volume of 2.8g of carbon monoxide at 27⁰C and 0.821 atm pressure is (R = 0.0821 lit. atm mol⁻¹…

7 years ago

The oxyacid of phosphorus, in which phosphorus has the lowest oxidation state, is Options (a) metaphosphoric acid (b) pyrophosphoric acid…

7 years ago

Rhododendron is characteristic of vegetation of Options (a) tropical zone (b) gangetic plains (c) alpine zone (d) mangrove belt Correct…

7 years ago

In which process,fused sodium hydroxide is eletrolysed at a 330⁰C temperature for extraction of sodium Options (a) Castner's process (b)…

7 years ago

Which of the following statements is correct regarding the drawbacks of raw rubber Options (a) It is plastic in nature…

7 years ago

When the oxygen is inadequate during respiration the condition is called Options (a) hypoxia (b) pleurisy (c) asphyxia (d) anoxia…

7 years ago

Isotopes used for providing semi conservative replication of DNA are Options (a) N¹⁴ and P³¹ (b) N¹⁴ and C¹⁴ (c)…

7 years ago

Mutations caused by mutagenic agents are termed as Options (a) spontaneous mutations (b) induced mutations (c) chemical mutations (d) chromosomal…

7 years ago