Exploring Substances: Acidic, Basic, and Neutral — Science STD 7 — Question

Which type of lens forms always a virtual image?

Which product in formed after anaerobic respiration in calf muscles?

In a mercury thermometer, the level of mercury rises when its bulb comes in contact with a hot object. What is the reason for this rise in the level of mercury?

Give two examples of insectivorous plants.

Give the reason behind variations found in the forests of different regions.

Fill in the Blank. The water and air are _______ conductors of heat.

How are we able to see an object which are not self-illuminating like a book or chair?

Paheli wants to know whether roots, which are underground also take in oxygen. If so, how?

Give two examples of acidic substances.

In places of hot climate, it is advised that the outer walls of houses be painted white. Explain.