Which statement is/are correct ?...

Which statement is/are correct ?

`C_(2)H_(5)Br` reacts with alcoholic KOH to form ` C_(2)H_(5)OH`

`C_(2)H_(5)OH` when treated with metallic sodium gives ethane.

`C_(2)H_(5)Br` when treated with sodium ethoxide forms diethyl ether.

`C_(2)H_(5)Br` with AgCN forms ethyl cyanide.

Text Solution

Verified by Experts

The correct Answer is:

`C_(2)H_(5) Br + NaOC_(2)H_(5) to underset("Diethyl ether")(C_(2)H_(5)) -O-C_(2)H_(5) + NaBr`

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Which statements is/are correct

At time t=0, the `S_(1)` is closedinstantaneous current in the closed circuit will 25 mA

The key `S_(1)` is kept closed for long time such that capacitors are fully charged. Now key `S_(2)` is closed at this time the instantaneous current across `30 Omega` resistor between P & Q will be 0.2 A

If key `S_(1)` is kept closed for long time such that capacitors are fulley charged the voltage across `C_(1)` will be 4V.

IF `S_(1)` is kept closed for long time such that capacitors are fully charged the voltage difference between P & Q will be 10V.

Refer to Q. No. (8) above. Which statements is/are correct ?

Both reactions (i) and (ii) proceed via `SN^(2)` mechanism.

Both reactions (i) and (ii) proceed vai `SN^(1)` mechanism.

Reaction (i) proceeds via `SN^(1)` and reaction (ii) via `SN^(2)` mechanism.

Reaction (i) proceeds bia `SN^(2)` and reaction (ii) via `SN^(1)` mechanism.

Which statement's is/are correct ?

Physical adsorption is multilayer non-directional and non-specifice

Chemical adsorption takes more time to attain equilibrium

Physical adsorption is due to free valence of atoms

Chemical adsorption is stronger than physical adsorption.