Question

Starch and Saliva Experiment, mix test tube A with starch solution (water+starch) and saliva and in test tube B with only starch solution .
Q. Akhil boiled the contents in the test tube A for half an hour before testing it with iodine. Will he get the result? Why?

Answer 1

Answer:

Explanation:

A poster designed by Sangeeth for a poster designing competition based

on the message ‘save earth from global warming’, is presented above. What

inferences can you formulate from this poster?

You have heard about global warming. It is a dangerous phenomenon

which leads to the rise in earth’s temperature. The main reason for global

warming is the increase in the level of carbon dioxide in the atmosphere.

Plants can resist this to a certain extent. Analyse illustration 1.1 given below

based on the indicators and prepare notes in the Science diary.