Chemical Properties of Ethanol

Q.

What is the test to distinguish between ethanol and ethanoic acid?

Q.

When a piece of sodium metal is added to ethanol, the gas formed with effervescence is .............

1. CO₂

2. N₂

3. O₂

4. H₂

Q.

Explain the physical properties of ethanol.

Q.

Write the balanced chemical equations for the following.

Ethanol reacts with sodium at room temperature.

Q.

In cold countries, ethylene glycol is used in car radiators for both winter and summer seasons. Explain

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

1. Acid
2. Base
3. Salt

Q.

State how the conversion of Ethyl alcohol to Ethene

Q.

Which type of compound is formed by the reaction of an alcohol with carboxylic acid?

1. Aldehyde

2. Acid

3. Ketone

4. Ester

Q.

When acetic acid reacts with ethyl alcohol, we add conc. H₂SO₄. It acts as _____ and the process is called _____.

1. Reducing agent, esterification

2. Acid, esterification

3. Dehydrating agent, esterification

4. Oxidizing agent, saponification

Q.

2Na + $2C{H}_{3}C{H}_{2}OH$ $\to$ _______ +$H_2$

1. 2CH₃CH₂O^-Na⁺

2. 2CH₃CHO^-

3. 2CH₃CH₂O^-

4. CH₃O^-Na⁺

Q. Name the organic compound which is:

(e) consumed as a drink,

Q. When ethanol reacts with ethanoic acid in the presence of conc. $H_{2}S{O}_4$, a substance with the fruity smell is produced.

Q. The compound (s) used as an anti-freeze in radiators of automobiles is/are :

1. methyl alcohol
2. ethyl alcohol
3. ethyl alcohol + water
4. methyl alcohol + water

Q.

Write the balanced chemical equation for the heating of ethanol at ${170}^0\mathrm{C}$ in the presence of Conc. Sulphuric acids

Q. What is denatured alcohol

Q. 2 ml of ethanoic acid was taken in each of the three test tubes A, B and C. To these test tubes 2 ml, 4 ml and 8 ml of water was added respectively. Which test tube should contain a clear solution?

1. Both A and B
2. All three test tubes
3. B
4. A

Q.

Write the equation for:

Preparation of ethanol by hydration of $C_2{H}_4$

Q. Which of th following alcohol is used in tincture iodine and cough syrups?

1. Hexanol
2. Pentanol
3. Ethanol
4. Ethanal

Q.

What happens when the vapour of ethanol is passed over the heated copper catalyst at 573 K?

1. Acetone will be formed

2. Ethanoic acid will be formed

3. Ethyl ethanoate will be formed

4. Acetaldehyde will be formed

Q.

An organic compound A is the constituent of antifreeze. This compound on heating with Oxygen forms another organic compound B which has a molecular formula ${\mathbf{C}}_{\mathbf{2}}{\mathbf{H}}_{\mathbf{4}}{\mathbf{O}}_{\mathbf{2}}$. Identify the compounds A and B. Write a chemical equation of the reaction that takes place to form the compound B.

Q.

An organic compound A is a constituent of wine and beer. The compound on heating with potassium dichromate or oxygen forms another compound B. Identify the compound A. Write the chemical equation for the complete reaction that takes place to form compound B. Name the compound B.

Q.

Which of the following gas is liberated during the reaction between sodium and ethanol?

1. H₂

2. O₂

3. CO₂

4. CO

Q. What is denatured alcohol ?

Q.

Give the balanced equation for the following
Preparation of ethanol from monochloroethane and aqueous sodium hydroxide.

Q.

Methyl alcohol is present in many ayurvedic tonics and helps in improvement of appetite.

1. It is converted to glucose and fructose

2. It is converted into glucose and galactose

Q. A gas is evolved when ethanol reacts with sodium. The gas evolved is :

1. hydrogen
2. oxyen
3. carbon dioxide
4. none of the above

Q.

To prevent its use as a beverage, alcohol is denatured by adding:

1. Acetic acid

2. Methanol

3. Methanoic acid

4. Methanal

Q. Sugarcane juice is used to prepare molasses which on fermentation gives :

1. propanol
2. ethenol
3. ethanol
4. methanol

Q. Ethanol reacts with ethanoic acid in presence of anhydrous zinc chloride to form _____________ .

1. methyl acetate
2. ethyl acetate
3. methyl formate
4. ethyl formate

Q. Tincture iodine is :

1. aqueous solution of iodine
2. iodine + KI in ethanol/water mixture
3. aqueous solution of KI
4. solution of iodine in aqueous KI