Atoms of an element differ from those of all other elements in

Nuclear fission is caused by the impact of:

Which of the following rays are the most penetrating?

How many colours the sunlight spectrum has?

Which is/are the important raw material(s) required in cement industry?

Which type of fire extinguisher is used for petroleum fire?

Which of the following is commonly called a 'poly-amide'?

Epoxy resins are used as

Detergents used for cleaning clothes and utensils contain?

Which of the following is used for removing air bubbles from glass during its manufacture?