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

Define the following.

Apiculture

What is Bee wax?

How is the division of labor observed in honey bees?

What are the types of honey bees found in a colony?

Explain the structure of Honey Bee Comb.

How is honey formed?

Discuss the various nutrients present in Honey.

Thickness of a cricket ball is measured by ______.

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

With the help of vernier caliper we can have an accuracy of 0.1 mm and with screw gauge we can have an accuracy of 0.01 mm.

How will you measure the least count of vernier caliper?

The main scale reading while measuring the thickness of a rubber ball using Vernier caliper is 7 cm and the Vernier scale coincidence is 6. Find the radius of the ball.

The magnitude of buoyant force acting on an object immersed in a liquid depends on ______ of the liquid.

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

The weight of fluid displaced determines the buoyant force on an object.

Higher Order Thinking Skill.

How does a fish manage to rise up and move down in water?

In an electrolyte the current is due to the flow of ______.

Electroplating is an example for ______.

Transformer works on ______.

Devices which is used to convert high alternating current to low alternating current is ______.

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

A transformer can step up direct current.

Alcohol can be separated from water by ______.