Ethanol

Q.

Write a short note on the World Wide Web.

Q.

What is rectified spirit?

Q. What is the result of oxidation of ethyl alcohol?

Q.

What is tincture of iodine? Identify the solute and solvent in it.

Q.

Can ethanol be used as a solvent?

Q.

Absolute alcohol is a:

1. 100% ethanol

2. Ethanol+water+phenol

3. 95% ethanol+5% water

4. 95% ethanol + 5% methanol

Q.

What are harmful effects of drinking alcohol? [5 MARKS]

Q.

Describe one reaction of ethanol.

Q.

What is the common name of methanol?

Q. The reaction between ethanol and ethanoic acid in the presence of a mineral acid catalyst is known as:

1. Substitution
2. Esterification
3. Addition
4. Oxidation

Q. What happens when soap is added to alcohol or ethanol?

Q.

Consider the following organic compounds :

$C{H}_{3}OH,C_2{H}_{5}OH,C{H}_{3}COC{H}_{3}C{H}_{3}COOH,C_2{H}_{5}COOH{C}_4{H}_{9}COO{C}_2{H}_{5}C{H}_4{C}_2{H}_{6}C{H}_{3}CHOHCHO$

Out of these compounds :

(a) Which compound is most likely to be sweet-smelling ?

(b) Which compound on treatment with conc. $H_{2}S{O}_4$ at ${170}^{o}C$ forms an alkene ?

(c) Which compound on repeated chlorination forms chloroform ?

(d) which compound is added to alcohol to denature it ?

(e) Which compound is a constituent of vinegar ?

(f) Which compound is used to sterilise wounds and syringes ?

Q. Choose the correct option.
The reaction of ethanoic acid with sodium hydroxide gives

1. sodium ethanoate and water
2. sodium ethoxide and water
3. ethyl ethanoate and water
4. no reaction

Q. Define a functional group with two examples. Write the functional groups for
(i) alcohol
(ii) ketone
(iii) carboxylic acid

Q.

One of the following substances is not added to make denatured alcohol. This is :

(a) methyl alcohol (b) copper sulphate (c) chloroform (d) pyridine

Q.

Discuss briefly two physical and three chemical properties of ethanol. [5 MARKS]

Q.

WWW is based on which model?

Q.

An organic compound 'A' has molecular formula ${\text{C}}_2{\text{H}}_4{\text{O}}_2$and is acidic in nature. On heating with alcohol and conc. sulphuric acid, vapours with pleasant or fruity smell are given out. What is this chemical compound 'A' and what is the chemical equation involved in the reaction? [3 MARKS]

Q.

How are the following obtained :
(a) absolute alcohol,

(b) spurious alcohol,
(c) methylated spirit?

Q. Will micelles formation happen in ethanol?

Q.

Name an organic compound which is used as a thermometric liquid.

Q.

What can we say about the nature of alcohol in a solution?

1. Acidic

2. Neutral

3. Amphoteric

4. Basic

Q.

Who Is Making The Web Standards

1. Mozilla

2. Microsoft

3. World Wide Web

4. The World Wide Web Consortium

Q.

Name one liquid carbon compound which is begin used as an additive in petrol in some countries.

Q.

An organic acid 'X' is a liquid which often freezes during winter time in cold countries. It has the molecular formula $C_2{H}_4{O}_2$. On warming with ethanol in the presence of a few drops of sulphuric acid, a compound ‘Y’ with sweet smell is formed. (i) Identify X and Y. (ii) Write the chemical equation for the reaction involved.

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

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

Q.

How can you prepare carbon dioxide using sodium bicarbonate?

Q.

Which of the following are uses of ethanol?

1. Used in cough syrup.

2. All of the options are correct

3. Used in alcoholic drinks.

4. Used in tincture iodine.

Q. When ethanoic acid is treated with ethanol in presence of $H_{2}S{O}_4$, then the products formed are:

1. ${\mathrm{HCOOC}}_2{H}_5\mathrm{and}{H}_{2}O$
2. $C_2{H}_5{\mathrm{COOCH}}_3\mathrm{and}{H}_{2}O$
3. ${\mathrm{CH}}_3{\mathrm{COOC}}_2{H}_5\mathrm{and}{H}_{2}O$
4. $C_2{H}_5{\mathrm{COOC}}_2{H}_5\mathrm{and}{H}_{2}O$

Q. Question 28
Which of the following represents saponification reaction?
(a) $C{H}_{3}COONa+NaOH\stackrel{CaO}{\to }C{H}_4+N{a}_{2}C{O}_3$
(b) $C{H}_{3}COOH+C_2{H}_{5}OH\stackrel{H_{2}S{O}_4}{\to }C{H}_{3}COO{C}_2{H}_5+H_{2}O$
(c) $2C{H}_{3}COOH+2Na\to 2C{H}_{3}COONa+H_2$
(d) $C{H}_{3}COO{C}_2{H}_5+NaOH\to C{H}_{3}COONa+C_2{H}_{5}OH$