Which of the following chemical reaction follow law of conservation of mass?

Which of following statement is incorrect for Dolton’s atomic theory?

If 5.3 g of sodium carbonate reacted with 6 g of acetic acid to forms 2.2 g of carbon dioxide, 0.9 g water and ‘x’ g of sodium acetate. The value of ‘x’ is

Order of the radius of atoms

1 amu equal to the _______.

Which of the following is an atom?

Molecular formula of aluminum oxide.

One mole is equal to ________.

Which of the following statement is correct?

If 12 g of carbon has ‘x’ atoms, then the number of atoms in 24 g of magnesium will be _____.

Which of the following is correct symbol for copper?

Which of the following is the formula of common salt?

Which have the maximum number of atoms?

In water, the proportion of oxygen and hydrogen by mass is

The weight of one mole of atoms of an element equal to _________.