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

Bats are not blind.

Plant proteins are excreted in theTorm of urea, uric acid, or ammonia.

Earthworms come out of their burrow during the summer season.

Earthworm reacts positively to brighter light.

Assertion (A): Infiltration and Percolation are two related but different processes.
Reason (R): They describe the movement of water through the atmosphere.

Assertion (A): The moist skin in earthworms helps in the oxygenation of blood.
Reason (R): The slippery skin of earthworms is kept moist.

Mention the excretory forms of Animal proteins.

How are bats important to humans?

What is the ideal temperature range of earthworms?

Explain briefly the role of earthworms in soil atmosphere, (or) soil health?

What are worm castings? How is it useful?

Discuss the adaptations of earthworms with their applications.

State Faraday’s laws of electromagnetic induction.

The slope of the distance-time graph at any point gives______.

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

Hydraulic press is used in the extraction of oil from oil seeds.

Why does a boat with a hole in the bottom would eventually sink?

Explain the principle, construction and working of a dc motor.

Assertion: For observing the traffic at a hairpin bend in mountain paths a plane mirror is preferred over convex mirror and concave mirror.

Reason: A convex mirror has a much larger field of view than a plane mirror or a concave mirror.

If an object is placed at the focus of a concave mirror, where is the image formed?

1. Complete the diagram to show how a concave mirror forms the image of the object.
2. What is the nature of the image?