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

Choose the correct answer from the options given below
Condition favorable for formation of a covalent bond is

Choose the correct answer from the options given below 
Which one is not example of polar covalent compound?

(a) Compound X consists of molecules.
Choose the letter corresponding to the correct answer from the choices (a), (b), (c) and (d) given below
The type of bonding in X will be

(a) Compound X consists of molecules.
Choose the letter corresponding to the correct answer from the choices (a), (b), (c) and (d) given below
X is likely to have a :

(a) Compound X consists of molecules.
Choose the letter corresponding to the correct answer from the choices (a), (b), (c) and (d) given below
In the liquid state, X will

Acids dissolve in water to produce positively charged ions. Draw the structure of these positive ions.

Explain why carbon tetrachloride does not dissolve in water.

Name a neutral covalent molecule which contains one lone pair of electrons.

In the formation of electrovalent compounds, electrons are transferred from one element to another. How are electrons involved in the formation of a covalent compound?

The electronic configuration of N2 is 2, 5. How many electrons in the outer shell of a N atom are not involved in the formation of a nitrogen molecule?

Fill in the blank with correct word from the bracket.
Melting and boiling points of covalent compounds are generally ______ (low, high).

What is the term defined below?

A bond formed by a shared pair of electrons, each bonding atom contributing one electron to the pair.

Give a reason as to why hydrogen chloride can be termed as a polar covalent compound.

Compare the compounds carbon tetrachloride and sodium chloride with regard to solubility in water and electrical conductivity.

The molecule which contains a triple covalent bond is ______.

Explain the bonding in methane molecule using electron dot structure.

An element L consists of molecules.

1. Which type of bond is present in the particles that make up L?
2. When L is heated with iron metal, it forms a compound FeL. What chemical term would you use to describe change undergone by L?
   

An element L consists of molecules.
Why L is heated with iron metal, it forms a compound FeL. What chemical term would you use to describe the change undergone by L?

The following table shows the electronic configuration of the elements W, X, Y, Z:

Answer the following questions based on the table above:

What type of bond is formed between Y and Z.

The particles present in strong electrolytes are