The United Nations Assembly declared as the

Which element gives hardness to stainless steel?

Which is the correct IUPAC name for CH₃CH₂CH(CH₃)CH₂OH?

In which medium, velocity of sound is maximum?

Which gas is used to convert vegetable oils into solid fats?

Which of the following cannot be cut by a knife?

A galvanometer is used to:

Atomic number =

Heat stored in water vapour is –

Which of the following pair of element – atomicity is correct?

I. Helium – monoatomic

II. Oxygen – triatomic

What is the pH of a neutral solution at 25°C?