CARBON AND ITS COMPOUND
Q-1 Write the next homologue of each of the following : (i) C2 H4 (ii) C4H6
Ans- (i) C 3H6 (ii) C5H8
Q-2 What are covalent compounds? Why are they different from ionic
compounds? List their three characteristic properties.
Ans- Covalent compounds are those compounds which are formed by sharing
of electrons between two atoms .
Covalent compounds Ionic compound
1- Melting and Boiling point are low 1- Melting and Boiling point are High
2-Bad conductor of Electricity 2-Good conductor of Electricity in
molten state
3- Non Metal only 3- it can be Metal or Non Metal
4- Solid,Liquid,gases 4- Generally Solid
5- It formed by Sharing of Electrons 5- it formed by complete transfer of
Electron
6- Insoluble in Water 6- Soluble in water
Eq- NaCl Eq- N2, , O2
(i) Generally have low melting and boiling points.
(ii) Generally insoluble or less soluble in water but soluble in organic
solvents.
(iii)Do not conduct electricity
Q-3 When ethanol reacts with ethanoic acid in the presence of conc. H2 SO4 ,
a substance with fruity smell is produced.
Answer the following : (i) State the class of compounds to which the fruity
smelling compounds belong. Write the chemical equation for the reaction
and write the chemical name of the product formed.
(ii) State the role of conc. H2 SO4 in this reaction.
Ans - (i) Esters
Chemical equation – O2 H3 CH2 CHO O || C 3 CH 4 SO 2 HConc. OH 2 CH 3
CHOH O || C 3 CH 1 Product’s chemical name – Ethyl
ethanoate ½ (ii) Conc. H2SO4 acts as a dehydrating agent (Helps in the
removal of water formed in the reaction)
Q-1 Write the next homologue of each of the following : (i) C2 H4 (ii) C4H6
Ans- (i) C 3H6 (ii) C5H8
Q-2 What are covalent compounds? Why are they different from ionic
compounds? List their three characteristic properties.
Ans- Covalent compounds are those compounds which are formed by sharing
of electrons between two atoms .
Covalent compounds Ionic compound
1- Melting and Boiling point are low 1- Melting and Boiling point are High
2-Bad conductor of Electricity 2-Good conductor of Electricity in
molten state
3- Non Metal only 3- it can be Metal or Non Metal
4- Solid,Liquid,gases 4- Generally Solid
5- It formed by Sharing of Electrons 5- it formed by complete transfer of
Electron
6- Insoluble in Water 6- Soluble in water
Eq- NaCl Eq- N2, , O2
(i) Generally have low melting and boiling points.
(ii) Generally insoluble or less soluble in water but soluble in organic
solvents.
(iii)Do not conduct electricity
Q-3 When ethanol reacts with ethanoic acid in the presence of conc. H2 SO4 ,
a substance with fruity smell is produced.
Answer the following : (i) State the class of compounds to which the fruity
smelling compounds belong. Write the chemical equation for the reaction
and write the chemical name of the product formed.
(ii) State the role of conc. H2 SO4 in this reaction.
Ans - (i) Esters
Chemical equation – O2 H3 CH2 CHO O || C 3 CH 4 SO 2 HConc. OH 2 CH 3
CHOH O || C 3 CH 1 Product’s chemical name – Ethyl
ethanoate ½ (ii) Conc. H2SO4 acts as a dehydrating agent (Helps in the
removal of water formed in the reaction)
