Electric Current and its Effects — Science STD 7 — Question

Define non-uniform motion.

Fill in the blanks.

The rhythmic expansion and contraction of the heart is called ______.

What is the approximate length of small intestine?

Why does a turmeric stain on white shirt is turned to red when it is washed with soap?

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?

Name the different types of teeth.

Mention the name of lens which can converge the sun's rays to a point and burn a hole in the piece of paper.

Give an example of chemical change in which heat, light, sound and unpleasant gases are produced.

How can you prepare turmeric paper?

Name the male reproductive unit of the flower.