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

______ has the highest latent heat of fusion.

One gram of water requires ______ of heat to raise its temperature by l°C.

Water is circulated around the car engine using the ______ pump and the heat is absorbed.

What is the taste of distilled water & boiled water?

What are the physical properties of pure water?

The common salt is ______.

Match the following:

Assertion: A salt is produced when an acid is neutralized by a base.
Reason: A salt can be acidic, basic, or neutral.

Write the chemical equation for the reaction of bases with metal oxides.

When lignite becomes darker and harder over time ______ coal is formed.

Which one among the following is an extremely strong but lightweight material is used in mountain bikes and tennis rackets?

______ coal is black and dull coal.

______ is used to make face packs and cosmetics.

Activated carbon, used in filters for water and air purification and in ______ machines is obtained from coal.

Coal helps to create alumina refineries.

Coke is used in the preparation of dyes, explosives, paints synthetic fibers, and pesticides.

Coal is also known as black diamond owing to its precious nature.

What is deep mining?

Explain the destructive distillation of Coal.

______ is absent in bacteria.