Chemical Bonding (CBSE Class 11) JEE/NEET

Find the number of sigma bonds in ethene.

• 10

• 7

• 5

• 6

Which of the following compound is having at least one lone pair (Central Atom) ?

• NH3

• BeCl2

• HCl

• BF3

Find the number of pi bonds in Calcium Carbide (CaC2)

• 5

• 1

• 2

• None of these

Which of the following is more colvalent ? 

• LiF

• LiCl

• LiBr

• LiI

In which of the following, ionic, covalent and coordinate bonds are present ?

• Ammonia

• Water

• Sodium isocyanide

• Potassium bromide

Non polar compound like hydrogen also can be converted into liquid at 1k because of

• Ionic bonds

• Vander waal’s forces

• Hydrogen bonds

• None of these

An element A can give 2e– and another element B can take 1e– the formula of the compound

• A2B

• A2B2

• AB2

• AB

Among the following, the compound with more ionic nature is

• CsCl

• CsBr

• CsI

• CsF

Which among the following is not a favorable factor for the formation of ionic bond ?

• Low charge on the cation

• Large size of anion

• Small size of anion

• High electron affinity of atom

In ammonium ion the covalency of nitrogen is

• 3

• 4

• 5

• 2