Secondary School (English Medium) (5 to 8) कक्षा ६ - CBSE Question Bank Solutions for Science

Three identical towels of red, blue and green colour are hanging on a clothes line in the sun. What would be the colour of shadows of these towels?

A football match is being played at night in a stadium with flood lights ON. You can see the shadow of a football kept at the ground but cannot see its shadow when it is kicked high in the air. Explain.

A student had a ball, a screen and a torch in working condition. He tried to form a shadow of the ball on the screen by placing them at different positions. Sometimes the shadow was not obtained. Explain.

In the following arrangement shown in the following figure, the bulb will not glow if the ends A and B are connected with

Paheli is running short of connecting wires. To complete an electric circuit, she may use a ______.

In which of the following circuits A, B and C given in the following figure, the cell will be used up very rapidly?

Will the bulb glow in the circuit shown in the following figure? Explain.

Paheli connected two bulbs to a cell as shown in the following figure.

She found that filament of bulb B is broken. Will the bulb A glow in this circuit? Give reason.

Boojho has a cell and a single piece of connecting wire. Without cutting the wire in two, will he be able to make the bulb glow? Explain with the help of a circuit diagram.

Which of the following sources of protein is different from others?

A bar magnet is cut into two pieces A and B, from the middle, as shown in the following figure.

Will the two pieces act as individual magnets? Mark the poles of these two pieces. Suggest an activity to verify your answer.

What is not true about air?

Mountaineers carry oxygen cylinders with them because ______.

Boojho took an empty plastic bottle, turned it upside down and dipped its open mouth into a bucket filled with water. He then tilted the bottle slightly and made the following observations.

1. Bubbles of air came out from the bottle.
2. Some water entered the bottle.
3. Nitrogen gas came out in the form of bubbles and oxygen got dissolved in water.
4. No bubbles formed, only water entered the bottle.

Which observations is/are correct?

Which of the following components of air is present in the largest amount in the atmosphere?

The components of air which are harmful to living beings are ______.

Usha took a lump of dry soil in a glass and added water to it till it was completely immersed. She observed bubbles coming out. The bubbles contain ______.

State whether the following statement is true or false. If false, correct them.

Plants consume oxygen for respiration.

State whether the following statement is true or false. If false, correct them.

Plants produce oxygen during the process of making their own food.

State whether the following statement is true or false. If false, correct them.

Air helps in the movements of sailing yachts and gliders but plays no role in the flight of birds and aeroplanes.