The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is

Which of the following types of glass can cut off ultraviolet rays?

What is the law in which under the same conditions of temperature and pressure, equal volumes of all gases contain equal number of molecules?

The gas, which comes out on opening a soda water bottle, is :

Which substance is formed by the action of chlorine gas on dry slaked lime?

The temperature point at which solid, liquid and gaseous states may stay together is known as