Measurement of Time and Motion — Science STD 7 — Question

Name the product formed by the reaction of sulphur and oxygen.

Name the term used for organisms that respire using anaerobic mode. Give an example of any such organism.

Which is the most common indicator?

Name the part of digestive canal involved in absorption of food.

How can you say that ripening of a fruit is a chemical change?

Note the changes in shape, size or state : Adding beetroot extract to water

Pick the odd-one-out from each of the groups given below on the basis of respiratory organs. Give reason for your answer. Lizard, cow, earthworm, snake.

Allow the light coming out of the other face of the prism to fall on a white sheet of paper or a white wall. Explain your observation.

Name the different types of teeth.

Give the word equation of the process of respiration.