Ethanol and Its Properties

Q. Identify X in the given reaction.
${\text{CH}}_3{\text{CH}}_2\text{OH}\text{(aq)}\stackrel{\text{X}}{\to }{\text{CH}}_2={\text{CH}}_2\text{(g)}+{\text{H}}_2\text{O(l)}$

1. Dilute ${\text{H}}_2{\text{SO}}_4$
2. Concentrated ${\text{H}}_2{\text{SO}}_4$
3. Acidified ${\text{KMnO}}_4$
4. Alkaline ${\text{KMnO}}_4$

Q.

Identify the metal ‘$x$’ present in chlorophyll and write the reaction of this metal with ${\mathrm{N}}_2$.

Q. Methanol is used to denature ethanol.

1. False
2. True

Q. Identify the balanced chemical reaction of sodium with ethanol.

1. $2\mathrm{Na}+2{\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}\to 2{\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{ONa}+H_2$
2. $2\mathrm{Na}+{\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}\to 2{\mathrm{CH}}_3\mathrm{CHO}+2\mathrm{NaH}$
3. $2\mathrm{Na}+{\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}\to 2{\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{Na}+H_{2}O$
4. $2\mathrm{Na}+{\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}\to {\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{ONa}+H_2$

Q. Ethanol acts as when it reacts with sodium metal to form sodium ethoxide and hydrogen gas.

1. acid
2. base
3. salt

Q. Methanol is safe to be used for drinking purpose.

1. False
2. True

Q. A dehydration reaction is a reaction in which there is _______ .

1. an addition of water
2. a loss of hydrogen
3. a loss of water
4. an addition of hydrogen

Q. 100% pure form of ethanol is called absolute alcohol.

1. False
2. True

Q. Heating ethanol with excess concentrated sulphuric acid gives ______.

1. butane
2. ethene
3. propyne
4. methane

Q. Which of the following is added to denature ethanol?

1. Methanol
2. Propanol
3. Methanal
4. Propanal