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)

-0

Which among the following is NOT an example of one-dimensional nanostructure?

Nano shells

Nanowires

Nanotubes

Fibres

MHT CET 2021 21th September Evening Shift

MCQ (Single Correct Answer)

-0

For a first order reaction, intercept of the graph between $$\mathrm{\log\frac{[A]_o}{[A]_t}}$$(Y-axis) and conc. (X-axis) is equal to

$$\mathrm{-\frac{k}{2.303~K}}$$

$$\mathrm{-\log[A]_o}$$

zero

$$\mathrm{\frac{2.303}{K}}$$

MHT CET 2021 21th September Evening Shift

MCQ (Single Correct Answer)

-0

The pH of 0.005 M KOH is 9.95. Calculate the [OH$$^-$$] ?

6.71 $$\times$$ 10$$^{-4}$$ M

1.12 $$\times$$ 10$$^{-4}$$ M

4.45 $$\times$$ 10$$^{-5}$$ M

8.91 $$\times$$ 10$$^{-5}$$ M

MHT CET 2021 21th September Evening Shift

MCQ (Single Correct Answer)

-0

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

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

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

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

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

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