If and are two values of a for which the unit vector is linearly dependent with and then is equal to

if , then

For such questions, we should know different formulae.

 ions are more stable than  ions because  ions _________ as compared to  ions

Equivalent weight of HCHO in the following reaction  is 30. A can be

Which of the following statement is incorrect?

Which of the following ore does NOT show the correct formula?

The quadratic equation whose roots are I and  where 

In zone-refining method the molten zone

Four newly  married couples are dancing at a function the selection of the partner is random. The number of ways that exactly one husband  is not dancing with his own wife is

There are 12 intermediate stations on a railway line between 2 stations. The number  number of ways that a train can be made to stop at 4 of these intermediate stations no two of these halting stations being consecutive is

The number of ways of forming an arrangement of 4 letters from the letters of the word "IITJEE" is