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

The causative agent (bacteria) of whooping cough is ______.

Vermicompost is similar to ______ in colour and appearance.

The fastest-growing sector in Agriculture is a ______.

Which one of the following is referred to as red worms? 

Earthworms eat ______ and excrete it in a digested form.

The nutrient-rich materials that are excreted by earthworms know as ______.

Earthworm feeds on inorganic wastes and excretes them in a digested form known as castings.

Define the following.

Compost

List the important methods of vermicomposting.

Write the rules that are followed in writing the symbols of units in SI system.

Which one of the following is most likely not a case of uniform circular motion?

Which of the following graph represents uniform motion of a moving particle?

Is the uniform circular motion accelerated? Give reasons for your answer.

What is meant by uniform circular motion? Give two examples of uniform circular motion.

Explain the construction and working of a hydrometer with diagram.

Heating effect of current is called ______

Name any two appliances which work under the principle of heating effect of current.

When the reflecting surface is curved outwards the mirror formed will be ______.

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

The convex mirror always produces a virtual, diminished and erect image of the object.

Numerical problem.

A concave mirror produces three times magnified real image of an object placed at 7 cm in front of it. Where is the image located? (Ans: 21 cm in front of the mirror)