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

When the solid (Solute) dissolves in a liquid (Solvent), it becomes a solution.

______ is the major difference between true solutions, suspensions, and colloids.

What do you understand by the term solute with reference to a solution?

What is the solvent?

State the law of reciprocal proportion.

Prove that in the following example, Sulphur and Oxygen combine using the law of reciprocal proportions.

Correct the wrong statement given below:

Magnesium hydroxide is used in whitewashing buildings.

Give the sequence of the events occurring during the prophase of mitosis.

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.