False External fertilisation occurs only in water and not on land. Syngamy of gametes outside the female body/outer environment, notably in... View Article
During the processing of coal to get coke, coal tar and coal gas are also obtained. Coal gas is obtained during the processing of coal to get... View Article
Testing reactivity of metals Set up the two test tubes. Take a clean copper nail and an iron nail. Place the copper wire in a solution of iron... View Article
In the soil, nitrogen gets enriched by cyanobacteria or blue-green algae. They convert atmospheric nitrogen to nitrites or nitrates. They are... View Article
