Q. 68

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

Assertion (A) : Some metals like platinum and palladium, can be used as storage media for hydrogen.

Reason (R) : Platinum and palladium can absorb large volumes of hydrogen.

(i) Statements A and R both are correct and R is the correct explanation of A.

(ii) A is correct but R is not correct.

(iii) A and R both are correct but R is not the correct explanation of A.

(iv) A and R both are false.

Answer :

(i) Statements A and R both are correct and R is the correct explanation of A.


Some metals like platinum and palladium can be used as storage media for hydrogen as they will not react with the atomic hydrogen due to their inertness.


They absorb large volumes of hydrogen as they have high surface area which allows hydrogen to get adsorbed over their surface.


These properties are utilized in many chemical reactions where hydrogen adsorbed over Pt or Pd is used as a catalyst.


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