Chemistry
Assertion (A): Atomic mass is expressed in atomic mass unit. Reason (R): Atomic mass is defined as times the mass of carbon-12. 1. Both A and R are true and R is the correct explanation of A. 2. Both A and R are true but R is not the correct explanation of A. 3. A is true but R is false. 4. A is false but R is true.
Related Questions
Assertion (A): Triatomic molecules consist of four atoms.
Reason (R): Monoatomic molecules contain only one atom.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): One litre of hydrogen weighs the same as one litre of oxygen.
Reason (R): One litre of hydrogen contains the same number of molecules as one litre of oxygen.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): Sulphur is an octatomic molecule.
Reason (R): The number of atoms in a molecule of an element is known as atomicity.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): One mole of a gas occupies 24.4 litres at S.T.P.
Reason (R): The mass of one mole of a gas is equal to its molecular mass.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.