A compound with maximum ionic character is formed from which of the following pairs?

1.	Na and I	2.	Cs and F
3.	Cs and I	4.	Na and F

The crystal lattice of electrovalent compound is composed of :

1. Atoms

2. Molecules

3. Oppositely charged ions

4. Both molecules and ions

Ions are formed from neutral atoms by-

1. Loss of electrons

2. Gain of electrons

3. Sharing of electrons

4. Loss and gain of electrons

Which among the following is the most covalent compound?

Which follows octet rule-

1. FeCl₂

2. AgCl

3. CaCl₂

4. CuCl

The type of bonds present in N₂O₅ are-

1. Only covalent

2. Only ionic

3. Ionic and covalent

4. Covalent and coordinate

Which of the following is not true according to VBT?

The molecule having a high dipole moment among the following is-

1. H₂S

2. BF₃

3. CO₂

4. CCl₄

Allyl cyanide; C₃H₅CN has-

1. 9 sigma bonds and 4 pi bonds

2. 9 sigma bonds, 3 pi bonds and 1 lone pairs

3. 8 sigma bonds and 5 pi bonds

4. 8 sigma bonds, 3 pi bonds and 4 non-bonding electrons.

The hybridization of carbon atoms in C-C single bond of HC≡C-CH=CH₂ is-

1. $s{p}^3-s{p}^3$

2. $s{p}^2-sp$

3. $sp-sp$

4. $s{p}^3-sp$