In the following questions, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the option out of the choices given below in each question.

Assertion (A) One atomic mass unit is defined as one-twelfth of the mass of one carbon - 12 atom.

Reason (R) Carbon - 12 isotope is the most abundant isotope of carbon and has been chosen as the standard.

(a) Both A and R are true and R is the correct explanation of A.

(b) Both A and R are true but R is not the correct explanation of A.

(c) A is false but R is true

(d) Both A and R are false

Open in App

Solution

Answer: (b) Both A and R are true but R is not the correct explanation of A.

Both Assertion and Reason are true and Reason is not the correct explanation of Assertion.

Atomic masses of the elements obtained by scientists by comparing with the mass of carbon comes out to be close to the whole number value.

Suggest Corrections

Similar questions

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the option out of the choices given below in each question.

Assertion (A) Combustion of 16g of methane gives 18g of water.

Reason (R) In the combustion of methane, water is one of the products.

(a) Both A and R are true but R are true but R is not the correct explanation of A.

(b) A is true but R is true

(d) Both A and R are false

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the option out of the choices given below in each question.

Assertion (A) The empirical mass of ethene is half of its molecular mass.

Reason (R) The empirical formula represents the simplest whole number ratio of various atoms present in a compound.

(a) Both A and R are true and R is the correct explanation of A.

(b) A is true but R is false

(d) Both A and R are false.

In the following question a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below in each question.

Assertion (A) Liquids tend to have the maximum number of molecules at their surface.

Reason (R) Small liquid drops have spherical shape.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is the correct explanation of A

(d) A is false but R is true

In the following question, a statement fo Assertion (A) followed by a statement fo Reason (R ) is given. Choose the correct option out of the choices given below in each question
Assertion (A) Beryllium carbonate is kept in the atmosphere fo carbon dioxide.
Reason (R) Beryllium carbonate is unstable and decomposes to give beryllium oxide and carbon dioxide.
(a) Both A and R are correct and R is the correct explanation of A
(b) Both A and R are correct but R is not the correct explanation of A
(c) Both A and R are not correct
(d) A is not correct But R is correct

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the option out of the choices given below in each question

Assertion (A) Significant figures for 0.200 is 3 where as for 200 it is 1.

Reason (R) Zero at the end or right of a number are significant provided they are not on the right side of the decimal point.

(a) Both A and R are true and R is correct explanation of A.

(b) Both A and R are true but R is not the correct explanation of A

(d) Both A and R are false.

Join BYJU'S Learning Program