Secondary School (English Medium) (5 to 8) Class 7 - CBSE Question Bank Solutions for Science

People say that nothing goes waste in a forest. Can you explain, how?

All the needs of animals living in a forest are fulfilled. Justify this statement in a few sentences.

“Forests are our lifeline.” Write five sentences on this topic.

Which of the following is waste water?

Which of the following is waste water?

Open drain system is a breeding place for which of the following?

Open drain system is a breeding place for which of the following?

Water polluted by various human activities causes a number of water borne diseases. Which of the following is not a water borne disease?

Water polluted by various human activities causes a number of water borne diseases. Which of the following is not a water borne disease?

Pick from the following one chemical used to disinfect water.

Pick from the following one chemical used to disinfect water.

In a filtration, plant water is filtered using layers of

In a filtration, plant water is filtered using layers of

Animal waste, oil and urea are some of the organic impurities present in sewage. Name two more organic impurities present in sewage.

Animal waste, oil and urea are some of the organic impurities present in sewage. Name two more organic impurities present in sewage.

A man travelling on a train threw an empty packet of food on the platform. Do you think this is a proper waste disposal method? Elaborate.

A man travelling on a train threw an empty packet of food on the platform. Do you think this is a proper waste disposal method? Elaborate.

Why should we not throw used tea leaves into sink?

Why should we not throw used tea leaves into sink?

Why should we not throw cooking oil and fats down the drain?