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

Name the following pollutants:

Any two chemicals leading to the formation of ozone holes.

Match the items in column I with the closely related ones in column II.

The following picture depicts a certain phenomenon

1. Name the phenomenon and explain it.
2. Enlist the sources that are responsible for the above mentioned phenomenon.
3. List out the effects of the above phenomenon on humans.

What is Ozone?

Discuss in detail the process of ozone depletion.

Is ozone depletion related to global warming?

What is the difference between stratospheric and ground level ozone?

Which Gas is present in large amount in the upper part of stratosphere.

Number of Oxygen atom in Ozone.

The chemicals leading to the formation of ozone holes.

Give Technical Terms:

The chemicals leading to the formation of ozone holes.

Fill in the Blanks:

The ______ is the layer of the atmosphere that contains the protective ozone layer

What is cytokinesis?

Fill in the Blanks:

______ is manmade compounds that have been widely used as refrigerants and in spray propellants and foam blowing.

True or False:

Ozone in the Troposphere is a harmful pollutant.

Ozone is abundant in this layer. Ozone heats this layer as it absorbs from incoming ultraviolet radiation from the sun:

Explain the significance of mitosis.

Give Reasons for the following
The mitosis is called equational division.

Differentiate between
Centrifugal cytokinesis and Centripetal cytokinesis.

Give a labeled diagram to illustrate amitosis.