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

Waxing of moon means______.

True or False – If False give the correct answer 

On a full moon day, when the Sun is setting in the west, moon rises in the West.

True or False – If False give the correct answer

The word crescent refers to the phases where the moon is less than half illuminated.

True or False – If False give the correct answer

The planet Venus in our solar system doesn’t have a moon.

The word______ refers to the phases where the moon is less than half illuminated

A synthetic fibre which has similar properties to wool is______.

True or False

It is good to wear clothes made of synthetic fibres while cooking.

Crossword

Across

1. Fibre that is used as synthetic wool.

2. A plastic used for making water bottles.

3. A long chain made of small repeatingmonomers.

4. Another name for this semi-synthetic fibre is artificial silk.

Down

5. A type of fibre that is naturally obtained from a cocoon.

6. A synthetic fibre classified as polyester.

7. A polymer used for making rope.

List the advantages of synthetic fibres.

Sorter’s Disease is otherwise known as ______.

Anthrax is caused by ______.

True or False – If False give the correct answer

Pencillin is the best medicine for curing Anthrax.

Water: pipe: Electric current:: ______

Copper: conductor: wood:: ______

Length: metre scale: current:: ______

Milli ampere: micro ampere: 10^-3A:: ______.

Write the symptoms of Anthrax

How should we treat animals?

Assertion: Pencillin or ciprofloxacin

Reason: These medicines cures cow pox.

The SI unit of speed is ______.