MHT CET 2021 21th September Evening Shift | MHT CET Year Wise Previous Years Questions

MHT CET 2021 21th September Evening Shift

MCQ (Single Correct Answer)

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Which of the following reactions is a Wurtz - Fittig reaction?

$$\mathrm{C}_6 \mathrm{H}_5 \mathrm{Cl}+\mathrm{CH}_3 \mathrm{Cl}+2 \mathrm{Na} \mathrel{\mathop{\kern0pt\longrightarrow} \limits_{\mathrm{ether}}^{\mathrm{dry}}} \mathrm{C}_6 \mathrm{H}_5-\mathrm{CH}_3+2 \mathrm{NaCl}$$

$$\mathrm{C}_2 \mathrm{H}_5 \mathrm{Cl}+\mathrm{CH}_3 \mathrm{Cl}+2 \mathrm{Na} \mathrel{\mathop{\kern0pt\longrightarrow} \limits_{\mathrm{ether}}^{\mathrm{dry}}} \mathrm{C}_3 \mathrm{H}_8+2 \mathrm{NaCl}$$

$$2 \mathrm{C}_2 \mathrm{H}_5 \mathrm{Cl}+2 \mathrm{Na} \underset{\text { ether }}{\stackrel{\text { dry }}{\longrightarrow}} \mathrm{C}_2 \mathrm{H}_5-\mathrm{C}_2 \mathrm{H}_5+2 \mathrm{NaCl}$$

$$2 \mathrm{C}_6 \mathrm{H}_5 \mathrm{Cl}+2 \mathrm{Na} \underset{\text { ether }}{\stackrel{\text { dry }}{\longrightarrow}} \mathrm{C}_6 \mathrm{H}_5-\mathrm{C}_6 \mathrm{H}_5+2 \mathrm{NaCl}$$

MHT CET 2021 21th September Evening Shift

MCQ (Single Correct Answer)

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Which among the following noble gases reacts with fluorine to give crystalline fluorides?

MHT CET 2021 21th September Evening Shift

MCQ (Single Correct Answer)

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Identify the name of following reaction.

Toluene + chromyl chloride $$\stackrel{\mathrm{CS}_2}{\longrightarrow}$$ complex $$\stackrel{\mathrm{H}_3 \mathrm{O}^{+}}{\longrightarrow}$$ Benzaldehyde

Stephen reaction

Etard reaction

Rosenmund reaction

Wolf-Kishner reaction

MHT CET 2021 21th September Evening Shift

MCQ (Single Correct Answer)

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What is the half-life of a first order reaction if time required to decrease concentration of reactant from 1.0 M to 0.25 M is 10 hour?

12 hour

4 hour

5 hour

10 hour