SSLC (English Medium) कक्षा ९ - Tamil Nadu Board of Secondary Education Question Bank Solutions

Write any two uses of total internal reflection.

What are the examples of total internal reflection in nature?

Excretion means ______.

Which is the major excretory product in humans?

Write a note on the skin.

The nasal spray vaccine can be administered to ______ patients.

Dengue is known as ______ fever.

Swine flu spreads through the air by an acute respiratory virus.

List the precautionary measures to avoid Avian Influenza.

Amal, a thirteen-year-old boy is suffering from fever, headache, body pain, vomiting, and diarrhea. He finds it difficult to breathe.

1. Diagnose the disease.
2. What is the causative agent?
3. What prevention and control measures can be taken?

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

Liquid–liquid colloids are called gel.

Explain Tyndall effect and Brownian movement with suitable diagram. 

The intensity of scattered light depends on the type of colloidal solution and the size of the colloidal particles.

Classify colloids based on the physical state of the dispersed phase and the dispersion medium.

A colloidal solution is a ______.

The solution of soap in water is ______.

What are colloidal solutions?

Mention the stages of meiotic Prophase -I.

Why is meiosis called reductional division and mitosis equational division?

If the cell (A) has undergone one mitotic division and another cell (B) has completed its meiotic division. The number of cells produced in A and B would be
Cell A: Cell B: