Light — Science STD 7 — Question

In which of the following processes new offspring with special characters is produced by selecting parents?

The liquid metal used in thermometer is

Maximum temperature occurs in:

The bulb has a thin wire called:

Which colour absorbs more heat?

Breathing is a process that
(i) provides O₂ to the body.
(ii) breaks down food to release energy.
(iii) helps the body to get rid of CO₂.
(iv) produces water in the cells.
Which of the following gives the correct combination of functions of breathing?

Which of the following metal catches fire when it comes in contact with water?

Distance:

An ideal mirror:

Manisha took a little bit of soil from her garden and mixed it with water. When she dipped a blue litmus in it, the litmus turned red. By adding which of the following to her garden will she get better plant growth?