Questions

Which one of the following forms of phosphorus is most reactive?

Chemical formula for sulphurous acid is:

Why is Carbon Monoxide a pollutant ?

Alkenes were earlier known as ______.

Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?

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.

Books are our ______ friends. They are our guides. We can learn everything from them. The books contain all the great ______ of the world's leaders and we can learn them by reading the books. The books help us find ______ to our questions. The books never fail us. We should read as ______ books as we can. But all books are not good. So we should ______ only good books.

So we should ______ only good books and read them.

If + means division, ­ means multiplication, '÷' means subtraction, x means addition, and < means less than, then which of the following is false?

Choose the CORRECT option if the two sides of a triangle is of length 4 cm and 10 cm and the length of its third side is a cm.