Question

1. Covalent bond was explained by [ ]

a) Bohr b) Dalton c) Lewis d) Thomson

2. Which of the following is the example of covalent molecule [ ]

a) F2 b) Cl2 c) HCl d) All of the above

3. The covalent compounds which contains the central atom with a valency is higher than ‘3’ is

[ ]

a) PCl5 b) SO3 c) Both a and b d) HCl

4. The type of bond present in CH4, molecule is [ ]

a) Polar covalent b) Non – polar covalent

c) Ionic bond d) None of these

5. The type of bond present, when the molecule is unsymmetrical and electrically neutral separation

of charges takes place is called [ ]

a) Non – polar covalent bond b) Polar covalent bond

c) Ionic bond d) Electrovalent bond

6. Among the following compound having lowest melting point [ ]

a) NaCl b) CaCl2 c) CH4 d) KCl

7. Among the following non – polar molecule with polar bonds is [ ]

a) NH3 b) O2 c) CCl4 d) NCl3

8. The molecule which obey the octet rule [ ]

a) H2 b) CO2 c) SF6 d) PF5

9. Among the following molecule is shared by one pair of electron between two atoms is

a) CO2 b) SO2 c) HCl d) O2 [ ]

10. Among the following molecule which contain both polar and non – polar bonds

a) PCl5 b) SO2 c) HCN d) H2O2 [ ]​

Answer 1

Answer:

1.Lewis 2.all of these 3.both a and b 4. ionic bond 5.polar covalent bond 6. nacl 7. ncl3 8. Sf6 9.O2 10.so2

Answer 2

Itna baara qstn...plzz.....

Repost it by sub division parts .....

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