Heena Sharma, Shubhankat Vats and, Rashmi Gupta Solutions for Chapter: Periodic Tests, Exercise 13: SAMPLE QUESTION PAPER

_____ takes part in the formation of lysosome.

A quantity has a value of $-9.0 \mathrm{m} {\mathrm{s}}^{-1}$. It may be the :

Salt can be recovered from its solution by evaporation. Suggest some other technique for the same.

Why is a person hurt less when he falls on a spongy surface?

Differentiate between bone and cartilage functionally.

In desert plants have thick waxy epidermis. Why?

A bullet of mass $20 \mathrm{g}$ is fired from a pistol of mass $2 \mathrm{kg}$ with a horizontal velocity of $150 \mathrm{m}/\mathrm{s}$. Calculate the recoil velocity of the pistol.

Distinguish between physical and chemical changes in a tabular form with giving examples.