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

(c) A is false but R is true

(d) Both A and R are false.

Open in App

Solution

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

Both Assertion and Reason are true and Reason is the correct explanation of Assertion

The molecular formula of ethene is $C_{2} H_{4}$ and its empirical formula is $C H_{2}$

Thus, Molecular formula = Empirical formula $\times 2$

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) 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.

(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 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) The temperature at which vapour pressure of a liquid is equal to the external pressure is called boiling temperature.

Reason (R) At high altitude atmospheric pressure is high.

(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 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) At critical temperature liquid passes into gaseous state imperceptibly and continuously.

Reason (R) The density of liquid and gaseous phase is equal to crictical temperature.

(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

(d) A is false but R is true

Join BYJU'S Learning Program

Answer: (a) Both A and R are true and R is the correct explanation of A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion The molecular formula of ethene is C2H4 and its empirical formula is CH2 Thus, Molecular formula = Empirical formula ×2