Seven persons, M, N, O, P, Q, R and S are of different

Which name is commonly used for "Sirius," the brightest star visible outside our solar system? 

What process is primarily used to convert seawater into drinkable water?

Match the following.

When red blood cells are placed in the three types of solution below, what will happen to the cell?

What does 'Hoar Frost' directly convert from?

The number of ______ is equal to the difference between the mass number of the atom and the atomic number.

Which gas is commonly used for the artificial ripening of fruits?

What is the shape of the Milky Way galaxy?

Compressed natural gas (CNG) primarily consists of which component?

Sequencing of ‘human genome’ was successfully done in the year

Which planet in our solar system has no atmosphere at all?