Methane contributes towards global warming so it is called a _________________ gas.

 

Carbon dioxide is one of the gases that cause the _________.

Out of all known elements, the minimum number is of ______.

Which of the following has largest atomic radius?

___ is the transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase.

Dried fruit like raisins when soaked in water, bulge and get filled with water. What is the scientific reason that explains this daily life event?

The most abundant of the rare gases i ?

What is the purpose of adding Gypsum to the cement?

Which of the following statements is INCORRECT?

I) Bleaching powder is a pale yellow powder

II) Dry NH3 gas turns red litmus blue

III) The pH of rain water is nearly 7

IV) The pH of acid rain is nearly 5.6