Chapter
Carbon And Its Compounds


Very Short Answer Type QuestionsQ.1. Why is the conversion of Ethanol to ethanoic acid an Oxidation reaction ?
Ans. In ethanoic acid once oxygen atom is more and two hydrogen atoms are less as compared to the ethanol. actually the reactions in which increase of Oxygen and decrease of hydrogen take place are called as Oxidation reaction.


Q.2. how would you distinguish experimentally between an alcohol and a carboxylic acid.
Ans. (i) alcohol does not react with sodium carbonate and no gas is released but, (ii) when carboxylic acid added to sodium carbonate then it reacts very fast and CO2 gas is released. when this gas is passed through lime water, the lime water becomes milky.

Q.3. what are the two properties of Carbon which lead to the huge number of carbon compounds we see around us ?
Ans. The two properties of Carbon which lead to the huge number of carbon compounds we see around us are :
(i) Catention and (ii) Tetra valency.


Q.4. What is a  functional group ?  (imp) (Mp 2015)
Ans. An atom  or  a group of atoms which is specifically attached to an organic compound and is responsible for the characteristics properties of that organic compounds is called functional group.

Q.5. What are oxidising agent ? 

Ans. Some substances are capable of adding oxygen to others, those substances are called as oxidising agent.

Q.6. What are organic compounds ? 
Ans. The compounds in which carbon is present as main element are called organic compounds.

Q.. Which substance is formed by oxidation of alcohol ?

Ans. Acetic acid.

Q.8. Write IUPAC name of first three member of alcohol. 
Ans. (i) Methanol, (ii) Ethanol, (iii) Propanol.

Q.9. What is formaline ? 

Ans. The 40% aqueous solution of formaldehyde is called as formaline.

Short Answer Type Questions
Q.1Explain the formation of scum when hard water is treated with soap.

Ans. In hard water, the carbonate, and bicarbonate of calcium and megnesium are present. They react with soap and from non-dissolving substances. These are called 'scum' so the soap can not give foam in hard water and more soap is used.

Q.2. What is hydrogenation ? What is its industrial application ? 
Ans. The addition of hydrogen to unsaturated hydrocarbon in the presence of catalyst is known as hydrogenation. 
     Industrial application:  In vegetable oils the unsaturated carbon chains are found. These chains on hydrogenation in the presence of nickel catalyst from saturated carbon chains. Thus, vegetable ghee is made on industrial scale. 

Q.3. What are soaps ? How many types of soaps are there ? 
Ans. Soap are sodium or potassium salts of carboxylic acids. Soaps are of three types: 
(i) Hard soaps, (ii) Soft soaps, (iii) Transparent soaps.

Q.4. What are the differences between soap and detergent ? (mp 2009)
Ans. Differences between soap and detergent ;