VISION ACADEMY

1. Which of the given examples are polar covalent compounds?

• HCl
• H2O
• NH3
• ALL THE MENTIONED COMPOUNDS

2. CCl4 is a non-electrolyte because

• IT DOES NOT CONTAIN ELECTRONS
• IT CONTAIN IONS
• IT CONTAIN ONLY MOLECULES
• NONE

3. Formation of ions from a polar covalent compound when it is dissolved in water is known as

• DISSOCIATION
• IONISATION
• BOTH DISSOCIATION & IONISATION
• NONE

4. Covalent compounds have low M.P. & B.P. because

• Molecules strongly attract each other
• Molecules are far away from each other
• Molecules are very heavy
• Molecules attract each other with a weak Vanderwaal's force of attraction

5.Which compound has two lone pair of electrons?

• CCl4
• H2O
• NH3
• NONE