1
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

Which of the following does not give a white precipitate with sodium bisulphide?

A

Acetone

B

Formaldehyde

C

Benzophenone

D

Acetaldehyde

2
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

Which of the following molecules has the maximum dipole moment?

A

$\mathrm{NCl}_3$

B

$\mathrm{NF}_3$

C

$\mathrm{NH}_3$

D

$\mathrm{NI}_3$

3
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

The number of radial nodes in $4 s$ and $3 p$ orbitals respectively is

A

2 and 0

B

3 and 1

C

1 and 0

D

2 and 1

4
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

The activation energy for a reaction is $9.0 \mathrm{kcal} / \mathrm{mol}$. The increase in the rate constant when the temperature is increased from 298 K to 308 K is

A

$10 \%$

B

$100 \%$

C

$50 \%$

D

$64 \%$

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