Tamil Nadu Primary School इयत्ता ४ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

Dull materials reflect light.

Define reflection.

The ability to do work is ________.

What is the unit of energy?

Tick (✓) the appropriate one.

When you are sick, what kind of food your mother serves you?

We should avoid eating _______ food, 

Consuming too much oily food is bad for our health.

Write any two food items you should eat when you are sick?

Why water is a good example for all states of matter?

Water exists in ____ states.

______ is the process by which water becomes water vapour.

Roof top harvesting method is used in the agriculture field.

What is freezing?

List out four things that you can reduce, reuse and recycle at home or school.

______ is used to make bags, dustbins, and tooth brushes.

Match the following.

Eco-friendly material is harmful to the environment.

What is meant by eco-friendly material?

You might have seen some huge colourful balloons flying high in malls. Those balloons are filled with nitrogen gas. Write the reason for filling nitrogen gas in balloons.