Nuclear Fission is caused by the impact of:

(A) None of these

(B) Neutron

(C) Electron

(D) Proton

What is the correct ascending order for frequencies of the following radiations?
1. Visible
2. X-rays
3. Ultraviolet
4. Radio waves
(A) 4, 1, 3, 2
(B) 1, 3, 2, 4
(C) 4, 3, 1, 2
(D) 3, 2, 4, 1

How many colours the sunlight spectrum has?
(A) Three
(B) Seven    
(C) Five
(D) Four

In the atomic explosion, enormous energy is released, which is due to the:

The age of most ancient geological formations is estimated by:

(A) Ra-Si method

(B) Uranium-Lead method

(C) Potassium-Argon method

(D) C¹⁴-method

Rayon is chemically_____.

(A) Pectin

(B) Cellulose

(C) Amino Acid

(D) Ketone

Which type of fire extinguisher is used for petroleum fire ?

(A) Foam type

(B) Soda acid type

(C) Powder Type

(D) None of these

The type of glass used in making lenses and prism is --

(A) Soft glass

(B) Pyrex glass

(C) Jena glass

(D) Flint glass