SSLC (English Medium) Class 7 - Tamil Nadu Board of Secondary Education Question Bank Solutions

______ of colour is the method of creating colour by mixing various proportions of two (or) three distinct colours of light.

The image of symmetrical letters like A, H, I, M, R, K, T, and U are not affected by lateral inversion.

We can not get white light when we mix seven colours.

What is meant by synthesis of colour?

Why are we able to see the tap water in a glass even though it is colorless?

Write a note on the manufacturing of glass.

Magnetic effect of current was discovered by ______.

______ are also used to remove splinters of steel or iron in hospitals dealing with eye injuries.

Edison used a ______ wire coil is a vacuum glass and discovered the first electric bulb in 1879.

______ cells cannot be recharged after use.

What do you mean by the magnetic effect?

What are MCBs? How do they work?

A chemical reaction happens when electricity passes through various conducting liquids.

Explain the following:

Short circuit.

Animals belonging to the phylum ______ are mostly parasites.

Name the following:

A phylum that has hermaphrodite animals.

______ is not a characteristic of Phylum Echinodertnata.

Mention two features of phylum Echinodermata.

Give an account on the classification of invertebrates with few general features and examples.

Bones with air cavities ate seen in ______.