1
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Calculate the radius of first orbit of He$^+$.

A
24.45 pm
B
13.23 pm
C
48.62 pm
D
39.46 pm
2
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify reagent 'A' used in the following reaction?

A
$\xrightarrow[\Delta]{\text { dil. } / \mathrm{HCl}}$
B
$\xrightarrow[\text { low temp. }]{\mathrm{NaNO}_2+\mathrm{HCl}}$
C
$\xrightarrow[\Delta]{\mathrm{H}_3 \mathrm{O}^{+}}$
D
$\mathrm{NaOH}, 623 \mathrm{~K}$
3
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Acidic buffer solution is prepared by mixing proportionate quantity of

A
strong acid and its salt with weak base.
B
strong base and its salt with weak acid.
C
weak acid and its salt with strong base.
D
weak base and its salt with strong acid.
4
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which among the following is NOT a feature of $\mathrm{S}_{\mathrm{N}} 2$ mechanism?

A
Single step mechanism.
B
Backside attack of nucleophile.
C
Formation of planar carbocation intermediate.
D
Involves simultaneous bond breaking and bond forming.
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