In the process of rusting of iron, the weight of it

Food cans are coated with tin and NOT zinc because ________.

Which vitamin is essential for RBC formation?

What is the pH of pure water?

Which of the following constitutes a food chain ?

Muscle fatigue is due to the accumulation of

What is the chemical formula for water?

Bolometer is used to measure –

What is the percentage of nitrogen present in farm yard manure (FYM) in general?

When a metal reacts with dilute hydrochloric acid, it produces:

A metal plate with a circular hole at the centre is heated. What will happen to the area of the hole?