SSLC (English Medium) Class 9 - Tamil Nadu Board of Secondary Education Question Bank Solutions

______ is the study of patterns, and processes in the natural world and their modifications by human activities.

The biosphere is a ______ and ______ and system.

The cyclic flow of nutrients between non-living and living factors of the environment is termed as ______ cycle.

______ is the reverse of vaporization.

Match the following:

Assertion (A): Biosphere is a dynamic and stable system.
Reason (R): There is a constant interaction between biotic and abiotic components in the biosphere.

Name three Biogeochemical cycles.

List the forms of Precipitation.

How are clouds and fogs formed?

According to you, which process of the water cycle is adversely affected by human activities?

Define standard unit.

State whether true or false. If false, correct the statement.

The foundations of high-rise buildings are kept wide so that they may exert more pressure on the ground.

Define electric field.

The unit of magnetic flux density is ______.

The SI Unit of magnetic field induction is ______.

State whether true or false. If false, correct the statement.

Fleming’s Left hand rule is also known as Dynamo rule.

State Fleming’s Left Hand Rule.

Define magnetic flux density.

______ has the same properties throughout the sample.

Which of the following are pure substances? Ice, Milk, Iron, Hydrochloric acid, Mercury, Brick and Water.