Class10th Chemistry Chapter 3


Total Marks: 19

1. Organic Chemistry is the study of
Hydrocarbons Derivatives of hydrocarbons Both a and b None of them
2. According to old concept, organic compounds can be derived from
Living things Non-living things Both a and b None of them
3. According to new concept, organic compounds can be derived from
Living things Non-living things Both a and b None of them
4. In a laboratory first organic compound was synthesized by
G.N Lewis Charles Fredrick Wohler Arrhenius
5. The first organic compound synthesized in laboratory was
Carbohydrate Protein Urea None of them
6. Urea in laboratory was synthesized from
Organic compound In-organic compound Both a and b None of them
7. The inorganic compound from which urea was synthesized in laboratory was
Ammonium hydroxide Carbonate Ammonium cyanate Carbide
8. Organic compounds composed of carbon and hydrogen only are called
Hydrocarbons Derivatives of hydrocarbons In-organic compounds Both a and b
9. Organic compounds having at least one electronegative atom including C and H are called
Hydrocarbons Derivatives of hydrocarbons Organic compounds Both b and c
10. The bond most commonly present in organic compounds is
Ionic bond Covalent bond Coordinate covalent bond Dipole-dipole interactions
11. In alkanes the carbon atoms are linked together by
Double covalent bond Single covalent bond Triple covalent bond All of the above
12. Amines can be identified by
–OH functional group –NH2 functional group –O- functional group –CO- functional group
13. Ethers can be identified by
–OH functional group –COR functional group –O- functional group –X functional group
14. Ketones can be identified by:
–COOH functional group –NH2 functional group –COH functional group –CO- functional group
15. Aldehydes can be identified b
–CO- functional group –COH functional group –X functional group –CN functional group
16. Carboxylic acids can be identified by
–CO- functional group –COH functional group –COOH functional group –COOR functional group
17. Esters can be identified by
–COOH functional group –COOR functional group –CONH2 functional group –OH functional group
18. The specialty of aromatic compounds is that they have
Lone pair of electrons Alternate single and double bond Dissolve in every type of solvent Their reaction rates are very fast
19. Hydrocarbons are
Polar in nature Non-polar in nature Both a and b None of them