During which decade did India see a negative population growth?

At the present rates of population growth of India and China, by which year is India likely to overtake China as the world’s most populous country?

What percentage of World’s population lives in India?

The toxicity of which of the following heavy metals leads to liver cirrhosis?

Nichrome is useda as heating element because of its

Supplements containing which of the following metals are generally prescribed for persons suffering from anaemia?