Atoms and Molec...

Choose the correct answer from the options given below.
In water, the hydrogen-to-oxygen mass ratio is:

Which of the following substance is made up of only one type of particle?

Sugar, salt, water, ammonia are:

When did Maharishi Kanad give the idea of parmanu ?

The accepted unit of atomic and molecular mass is:

What is atomic mass of $$He$$ in amu $$(u)$$ units?

What is the proportion of hydrogen and oxygen by weight in water?

The molecular mass of a compound containing only one nitrogen atom can be

Which one of the following is the standard for atomic mass?

The time in seconds it would take to spend Avogadro's number of rupees at the rate of $$10$$ lakh rupees per second is :