Questions

Name the international treaty designed to protect the ozone layer from CFCs.

When warm air rises up and cold air from the surrounding areas rushes in to fill its place then this sets up ________________ in air.

In the following passage some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

Life is full of ______ types of experiences.Strange, in fact, are the ways of God.If a man is happy today, he may be ______ unhappy the very next day.Some ______ are pleasant and joyful while others are full of ______ and pain.If at one time a person finds himself on top of the world, at the ______ time he is depressed and downcast.

at the ______ time he is depressed and downcast.

Which of the following is NOT included in the excretory system of human being?

 The difference between exports and imports is called-? 

In terms of size, Venus ranks no. ___ in our Solar System.

Which one of the following is the largest source of electricity in India?