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

Identify the stage of mitosis from the below picture. List the chromosomal events in this stage.

The tubular filtrate is finally known as ______.

Calcium carbide is used to ______.

______ is an intentionally added adulterant in milk.

Carnauba wax is coated on apples to increase the taste.

Coffee powder adulterated with tamarind powder floats in water.

Chalk powder is an adulterant used in common salt.

Assertion (A): Bananas are kept at room temperature.
Reason (R): In a refrigeration-bananas ripen fast.

Assertion (A): Fruits and vegetables are placed at the bottom of a food pyramid.
Reason (R): They must be consumed in more quantities for good health.

How are adulterants classified?

Name the adulterants used in

1. Tea leaves
2. Chilli powder.

Give a simple technique to detect adulteration in milk.

Food should be pure, nutritious, and free from any adulteration for proper maintenance of human health.

How does microbial contamination occur?

Explain the types of adulterants.

Explain some simple techniques used to detect adulterants at home.

Explain a method to find the thickness of a hollow tea cup.

Numerical Problem.

Find the thickness of a five rupee coin with the screw gauge, if the pitch scale reading is 1 mm and its head scale coincidence is 68.

List the safety features while handling electricity

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

The angle of deviation depends on the refractive index of the glass.