Ionic Bond

1. There will be total 20  MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying.

1. A polar covalent bond will be formed in which one of these pair of atoms:

Cl₂

N₂

HF

H₂

Question 1 of 20

2. Dipole moment is expresssed in what units?

Volt

Debye units

Siemens

Coulomb

Question 2 of 20

3. A bond with maximum covalent character is found between:

Atoms of same size

Atoms having large differences in electronegativities

Chemically similar atoms

Identical atoms

Question 3 of 20

4. Which of the following will have highest melting point?

KI

KBr

KCl

KF

Question 4 of 20

5. The number of electrons which an atom contributes for sharing while forming Covalent bond is known as its:

Acceptor

Covalency

Donor

Valency

Question 5 of 20

6. Why is LiI more covalent than LiF?

Polarisability

Because I has low ionization enthalpy

Because of larger size of I- than F-, I- gets polarized to a greater extent

Because F has higher electron gain enthalpy

Question 6 of 20

7. Select the molecule from the following which has polar bond but dipole moment is zero.

HCl

CO₂

H₂O

NF₃

Question 7 of 20

8. Which of these compounds is most likely to be ionic?

CBr₄

H₂O

SrBr₂

GaAs

Question 8 of 20

9. Ionic bond is present in which of the following species:

CCl₄

NaBr

O₂

CHCl₃

Question 9 of 20

10. The compound which contains both ionic and covalent bond is:

H₂

KCl

CH₃Cl

KCN

Question 10 of 20

11. Among the following compounds highest lattice energy is present in:

CsCl

CsI

CsBr

CsF

Question 11 of 20

12. Element X is strongly electropositive and Y is strongly electronegative. Both are univalent. The compound formed would be:

X → Y

X+Y−

X− Y+

X – Y

Question 12 of 20

13. Polarization is the distortion of the shape of an anion by the cation. Which of the following statements is correct?

Maximum polarization is done by a cation of high charge

Minimum polarization is done by a cation of small size.

A large cation is likely to bring large degree of polarization

A smaller anion is likely to undergo high degree of polarization

Question 13 of 20

14. Among the following compounds, polar covalent bond is present in:

N₂

Cl₂

HCl

O₂

Question 14 of 20

15. The types of bond present in NH₄Cl are:

Ionic and covalent

Ionic, covalent and coordinate

Ionic

Ionic and coordinate

Question 15 of 20

16. In which of these pairs of atoms would the bond be the least polar (i.e., lowest percent ionic character)?

H₂O

H₂S

HCl

BF₃

Question 16 of 20

17. When an element of very low ionisation potential reacts with an element of very high electron affinity:

A polar covalent bond is formed

A weak ionic bond is formed

A strong ionic bond is formed

A coordinate bond is formed

Question 17 of 20

18. Though H₂O and CO₂ are triatomic molecules, why is CO₂ a non - polar molecule?

Due to linear structure

Because C forms double bonds

Due to linear structure, bond dipoles of two C = O bonds cancel each other

Because CO₂ is gas

Question 18 of 20

19. Among the following bonds, the most ionic bond is formed between:

Cs and Cl

Al and Cl

H and Cl

C and Cl

Question 19 of 20

20. The electrovalent linkage is present in:

CHCl₃ molecule

CCl₄ molecule

NaBr molecule

O₂ molecule

Question 20 of 20

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