(English Medium) ICSE Class 10 - CISCE Question Bank Solutions for Chemistry

Explain the bonding in methane molecule using electron dot structure.

Choose the most appropriate answer from the following list of oxides which fit the description.

A covalent oxide of a metalloid.

Name the following:

The property of element by virtue of which atoms of the element can link to each other in the form of a long chain or ring structure.

An element L consists of molecules.

What type of bonding is present in the particles that make up L?

An element L consists of molecules.

When L is heated with iron metal, it forms a compound, FeL. What chemical term would you use to describe the change undergone by L?

State your observation when excess sodium hydroxide is added to calcium nitrate solution

Give balanced chemical equation to prepare the following salt:

Copper chloride using copper carbonate

1. The percentage composition of a gas is:
   Nitrogen 82.35%, Hydrogen 17.64%.
2. Find the empirical formula of the gas. [N = 14, H = 1]

Define a covalent bond.

What are the conditions necessary for the formation of covalent molecules?

What is the difference between ionic compounds and polar covalent compounds?

What is the difference between ionic compounds and covalent compounds?

What do you understand by polar covalent compounds?

Methane molecule is non-polar molecule. Explain.

Give the characteristic properties of covalent compounds.

Explain the following:
polar covalent compounds electricity.

For each compound mentioned above give the formulae of ions formed in aqueous solution.

State the type of bonding in the following molecule.
Water

State the type of bonding in the following molecule.
Hydroxyl ion

State the type of bonding in the following molecule.

Methane