ICSE ICSE Class 7 - CISCE Question Bank Solutions

Write true or false of the following statement.

A rose appears red in light of all the colours.

Write true or false of the following statement.

A black paper absorbs light of all the colours and reflects none.

Write true or false of the following statement.

The primary colours are red, blue and green.

Fill in the blank 

The colour of an opaque object is the colour of light which it _______

 Fill in the blank

Magenta, cyan and yellow are the ________ colours.

A red rose is seen in green light. It will appear ______.

 Select the correct alternative

The primary colours are

What are the primary colours ? Name the three primary colours.

What are the secondary colours ? Name the three secondary colours.

Fill in the blank with the appropriate colour

 Blue + _______ = Cyan

Fill in the blank with the appropriate color

Red + Blue + _______ = White

Fill in the blank with the appropriate colour

Red + Blue = _______

Fill in the blank with the appropriate colour

Green + Red = ______

The leaves appear green when seen in white light. Give a reason.

A rose appears red in white light. How will it appear in
green light? Give a reason for your answer.

Why does a piece of paper appear white in sunlight ? How would you expect it to appear when viewed in red light?

A piece of paper appears black in sunlight. What will be its colour when seen in red light?

A rose appears red in white light. How will it appear in red light? 
Give a reason for your answer.

Define the term current.

Write true or false for a given statement.

Wool is a conductor of electricity.