1.
Which of the following would weigh the highest?
3.
A change in the physical state can be brought about:
4.
Which of the following contains maximum number of molecules?
10.
What is the symbol of helium?
11.
What is the mass of 1 mole of nitrogen atoms.
13.
Calculate the mass of 0.5 mole of N atoms
14.
Which of the following statement is not true about an atom?
15.
A change in the physical state can be brought about:
16.
What is the symbol of cobalt?
17.
Which of the following has maximum number of atoms?
18.
Mass of one atom of oxygen is:
19.
What is the mass of 0.5 mole of water molecules?
23.
The chemical symbol for sodium is:
28.
The chemical symbol for nitrogen gas is:
