SSLC (English Medium) कक्षा ८ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

______ is so hard that it can scratch glass.

When carbon dioxide is passed through lime water ______.

The reaction of H₂ gas with oxygen gas to form water is an example of ______.

Both CO₂ and H₂ gases are ______.

______ is the chemical name of rust.

______ is the chemical name of slaked lime.

______ is the chemical name of limestone.

______ is a chemical substance is used in whitewashing.

When milk is mixed with coffee decoction, the colour of milk and decoction changes due to ______.

Acid rain is a result of ______.

What is thermochemical reactions?

What is the difference between reactants and products?

Write the effects of chemical reactions.

What are the chemical reactions that occur in everyday life?

About 78% of the volume of air is ______.

The first scientific theory about atoms was given by J J. Thomson.

In which one of the following state's water is present on Earth?

Citric acid is present in ______.

An acid is ______.

Acids are ______ in taste.