Tamil Nadu Primary School Class 4 - Tamil Nadu Board of Secondary Education Question Bank Solutions

Percentage of Oxygen in air is about _______%

Who am I?
I give you oxygen.

We inhale _______ gas.

Find out the energy conversion that takes place in the following.

Speaker ______.

______ is used in gas welding, medicine manufacturing, construction, and transportation.

______ is the only way to conserve rainwater.

Rainwater harvesting was launched by the Tamil Nadu government in 2011.

How many bones are there in an adult human being?

Say true or false.

Heart is made up of muscles.

Say true or false.

Muscles are the soft parts that cover our bones.

Here is Nandini‘s lunch box.

1. Are all the items healthy?
2. Suggest her to remove one food which is not healthy and add one food which is healthy. Give reasons for change.

_______ is an easily digested food.

Which one cannot be preserved by the drying method?

_____ gives us the energy to work and play.

We make Idiyappam by _______ method.

Biriyani is a raw food.

Draw one of your favourite raw food and colour it.

Write about any two preservation methods.

Explain any four food preservation methods.

Write the names of the exotic plants.