62
MCQ (Single Correct Answer)
Match the species given in Column I with the shape given in Column II and mark the correct option.
| Column I | Column II | ||
|---|---|---|---|
| A. | $\mathrm{SF_4}$ | 1. | Tetrahedral |
| B. | $\mathrm{BrF_3}$ | 2. | Pyramidal |
| C. | $\mathrm{BrO_3^-}$ | 3. | Sea-saw shaped |
| D. | $\mathrm{NH_4^+}$ | 4. | Bent T-shaped |
A
A - 3, B - 2, C - 1, D - 4
B
A - 3, B - 4, C - 2, D - 1
C
A - 1, B - 2, C - 3, D - 4
D
A - 1, B - 4, C - 3, D - 2
63
MCQ (Single Correct Answer)
Match the items of Columns I and II and mark the correct option.
| Column I | Column II | ||
|---|---|---|---|
| A. | Its partial hydrolysis does not change oxidation state of central atom. | 1. | He |
| B. | It is used in modern diving apparatus. | 2. | XeF$_6$ |
| C. | It is used to provide inert atmosphere for filling electrical bulbs. | 3. | XeF$_4$ |
| D. | Its central atom is in $sp^3 d^2$ hybridisation. | 4. | Ar |
A
A - 1, B - 4, C - 2, D - 3
B
A - 1, B - 2, C - 3, D - 4
C
A - 2, B - 1, C - 4, D - 3
D
A - 1, B - 3, C - 2, D - 4
64
MCQ (Single Correct Answer)
Assertion (A) $\mathrm{N}_2$ is less reactive than $\mathrm{P}_4$.
Reason (R) Nitrogen has more electron gain enthalpy than phosphorus.
A
Both Assertion and Reason are correct statements, and Reason is the correct explanation of the Assertion.
B
Both Assertion and Reason are correct statements, and Reason is not the correct explanation of the Assertion.
C
Assertion is correct, but Reason is wrong statement.
D
Assertion is wrong but Reason is correct statement.
E
Both Assertion and Reason are wrong statements.
65
MCQ (Single Correct Answer)
Assertion (A) $\mathrm{HNO}_3$ makes iron passive.
Reason (R) $\mathrm{HNO}_3$ forms a protective layer of ferric nitrate on the surface of iron.
A
Both Assertion and Reason are correct statements, and Reason is the correct explanation of the Assertion.
B
Both Assertion and Reason are correct statements, and Reason is not the correct explanation of the Assertion.
C
Assertion is correct, but Reason is wrong statement.
D
Assertion is wrong but Reason is correct statement.
E
Both Assertion and Reason are wrong statements.
66
MCQ (Single Correct Answer)
Assertion (A) HI cannot be prepared by the reaction of KI with concentrated $\mathrm{H}_2 \mathrm{SO}_4$.
Reason $(\mathrm{R}) \mathrm{HI}$ has lowest $\mathrm{H}-\mathrm{X}$ bond strength among halogen acids.
A
Both Assertion and Reason are correct statements, and Reason is the correct explanation of the Assertion.
B
Both Assertion and Reason are correct statements, and Reason is not the correct explanation of the Assertion.
C
Assertion is correct, but Reason is wrong statement.
D
Assertion is wrong but Reason is correct statement.
E
Both Assertion and Reason are wrong statements.