Question Text
Question 1 :
Which is not a characteristic of natural resources among the following?
Question 2 :
Many marine animals use carbonates dissolved in sea-water to make their shells. Which of the following component is reduced in our atmosphere by this biological phenomenon?<br/>
Question 5 :
When the soil of the greenhouse nurseries is sterilized with methyl bromide gas, it leads to a deficiency of:
Question 10 :
Freon is not recommended to be used in refrigerators because they:
Question 12 :
Mineral nodules present in ocean which can meet shortage of important soil nutrient are<br>
Question 13 :
Nitrogen fixation is inhibited by oxygen. However, in aerobic nitrogen-fixing bacteria, nitrogen is fixed in the presence of oxygen. Nitrogenase in such organisms is protected by which one of the following mechanisms.
Question 23 :
Which one of the following agents affects hatching of silk worm eggs?
Question 27 :
Peptic ulcers in the stomach and duodenum, which cause pain and bleeding are caused by
Question 28 :
Assertion: Sporozoites of malarial parasite enter in the human body due to biting of freshly born female Anopheles mosquito, whose mother was a carrier of malarial parasite.
Reason: Male and female gametocytes of malarial parasites are formed in the human intestine.
Question 30 :
Identify the correct sequence of events in the viral replication process.<br>i. Eclipse<br>ii. Maturation<br>iii. Adsorption<br>iv.Assembly<br>v.Penetration<br>vi.Lysis