In each of the following two questions two statements are given one labelled as the Assertion(A) or Statement I and the other labelled as the reason (R) or statement II. Examine these statements carefully and mark the correct choice as per following instructions
Assertion (A) - The standard unit for expressing the mass of an atom is a.m.u.
Reason (R) - a.m.u. is also called avogram

Assertion (A): The standard unit of expressing the mass of atom is amu. Reason (R ): amu is also called as avogram.

Assertion (A): The standard unit of expressing the mass of atom is amu. Reason (R ): amu is also called as avogram.

In each of the following two questions two statements are given one labelled as the Assertion(A) or Statement I and the other labelled as the reason (R) or statement II. Examine these statements carefully and mark the correct choice as per following instructions Assertion (A) - The atomic mass of an element is not only relative but is average relative mass of an atom Reason (R) - The average word is essential because the element, in general, is a mixture of different isotopes and atomic mass is the average of these relative atomic mass.

In each of the following two questions two statements are given one labelled as the Assertion(A) or Statement I and the other labelled as the reason (R) or statement II. Examine these statements carefully and mark the correct choice as per following instructions Assertion (A) - Both 12 g of carbon and 27 g of aluminium will have 6.12xx10^(23) atoms Reason (R) - Gram atomic mass of an element contains Avogadro number of atoms

In each of the following two questions two statements are given one labelled as the Assertion(A) or Statement I and the other labelled as the reason (R) or statement II. Examine these statements carefully and mark the correct choice as per following instructions Assertion (A) - Relative atomic mass of boron is 10.8 Reason (R) - Boron has two isotopes B-10 and B-11 with percentage abundance of 19.6% and 80.4% respectively.

In each of the following two questions two statements are given one labelled as the Assertion(A) or Statement I and the other labelled as the reason (R) or statement II. Examine these statements carefully and mark the correct choice as per following instructions Assertion (A) - Both 106 g of sodium carbonate and 12 g of graphite have same number of carbon atoms Reason (R) - Both 106 g sodium carbonate and 12 g of graphite contain 1 g-atom of carbon

In each of the following two questions two statements are given one labelled as the Assertion(A) or Statement I and the other labelled as the reason (R) or statement II. Examine these statements carefully and mark the correct choice as per following instructions Assertion (A) - Both 106 g of sodium carbonate and 12 g of graphite have same number of carbon atoms Reason (R) - Both 106 g sodium carbonate and 12 g of graphite contain 1 g-atom of carbon

In each of the following two questions two statements are given one labelled as the Assertion(A) or Statement I and the other labelled as the reason (R) or statement II. Examine these statements carefully and mark the correct choice as per following instructions Assertion (A) - Both 32 g of SO_(2) and 8g of CH_(4) have same number of molecules Reason (R) - Equal moles of substances have equal number of molecules

In each of the following two questions two statements are given one labelled as the Assertion(A) or Statement I and the other labelled as the reason (R) or statement II. Examine these statements carefully and mark the correct choice as per following instructions Assertion (A) - Pure water obtained from different sources, such as river, well, spring, sea etc. always contains hydrogen and oxygen in ratio of 1:8 by mass Reason (R) - Mass of reactants and products during chemical or physical changes is always constant

In each of the following two questions two statements are given one labelled as the Assertion(A) or Statement I and the other labelled as the reason (R) or statement II. Examine these statements carefully and mark the correct choice as per following instructions Assertion (A) - One mole of water molecules at 4^(@)C should occupy the volume of 18 mL Reason (R) - Water contains H_(2)O molecules bonded by intermolecular H-bonds.