Question

2. Why do doctors
3. Why can't our elbows bend backwards?
4. Why does a blacksmith use heat to make various tools in his busi
A hag of cement kept in the open gets soaked in rain. What will b​

Answer 1

Answer:

2)

3)Our elbow cannot move backwards because it has a hinge joint which allows the movement in one plane only.

4)Blacksmiths work by heating pieces of wrought iron or steel until the metal becomes soft enough for shaping with hand tools, such as a hammer, an anvil and a chisel. ....

5)In due to rain, the cement bag has been wet, then the cement will react with water and will get hardened. This reaction is irreversible in nature and can not be reversed back.