NEET
- Exam
- NEET
- Subject
- Chemistry
- Chapter
- Redox Reactions
NEET · Chemistry · Redox Reactions
Given below are two statements; one is labelled as Assertion (A)...
Given below are two statements; one is labelled as Assertion (A) and the other is labelled as Reason(R).
Assertion :- Oxidation state of Hydrogen is +1 in (\mathrm{H}_2 \mathrm{O}) while -1 in (\mathrm{CaH}_2).
Reason :- (\mathrm{CaH}_2) is a metal hydride and for metal hydrides, hydrogen is assigned the oxidation number of -1.
In the light of the above statements, choose the most appropriate answer from the options given below :
Options
- ABoth (A) and (R) are correct but (R) is not the correct explanation of (A).
- B(A) is correct but (R) is not correct.
- C(A) is not correct but (R) is correct.
- DBoth (A) and (R) are correct and (R) is the correct explanation of (A).
Correct answer
D. Both (A) and (R) are correct and (R) is the correct explanation of (A).
Step-by-step solution
- Assertion (A): Correct. In (\mathrm{H}_2 \mathrm{O}), hydrogen has an oxidation state of +1 , while in (\mathrm{CaH}_2) (a metal hydride), hydrogen has an oxidation state of -1.
- Reason (R): Correct. In metal hydrides like (\mathrm{CaH}_2), hydrogen is assigned an oxidation state of -1.
Since the reason correctly explains the assertion, both (A) and (R) are correct, and ((\mathrm{R})) is the correct explanation of ((\mathrm{A})).