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

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.

Why does a ray of light bend when it travels from one medium to another?

Explain with diagrams how refraction of incident light takes place from

1. rarer to denser medium
2. denser to rarer medium
3. normal to the surface separating the two media.

Numerical problems.

The speed of light in water is 2.25 × 10⁸ ms^–1. If the speed of light in vacuum is 3 × 10⁸ ms^–1, calculate the refractive index of water.

How does the water kept in an earthen pot remain cool?

Explain how does SONAR work?

State the Gay Lussac’s law of combining volumes. Explain with an illustration.

Mention any two vital functions of human kidney

What is micturition?

Higher Order Thinking Skill

Why do you think that urine analysis is an important part of medical diagnosis?

AGMARK is used to certify ______ and ______ products in India.

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

ISI mark is mandatory to certify agricultural products.

Give abbreviation for the following.

ISI-