Which of the following interchange of signs would make

What is the main constituent of biogas?

Who is known as father of Green Revolution in India?

Protons were discovered by

Which of the following is a non-metal?

What is the chemical name of bleaching powder?

Milk tastes sour when kept in the open for sometimes due to the formation of-

Which substance is commonly used as a thermometric material in thermometers due to its expansive properties under temperature changes?

What is the chemical name for baking soda?

Soap is prepared by boiling caustic soda with -

Which statement about carbon credits is incorrect?