Multiple Choice Questions

What is the major similarity in electric motor and current generator?

What is the reason of increasing acceleration due to gravity, if the earth is compressed to the size of the moon?

Which of the following is tri-hydric alcohol?

Which medicinal plant can be used for the treatment of skin diseases by reducing the blood issues?

Through which valve does the blood flow from right ventricle to lungs?

What is the imaginary line joining two centres of curvature of a lens called?

What is the number of chromosome in reproductive cell of human?

Villagers of a village are being troubled by rats and they conducted a campaign to kill them. What could be the consequence of it?

A fact and two statements related with genetics are given below.
Fact: In vitro fertilization is a process of fertilization where an egg is combined with sperm in a glass vessel and then it is transferred in mother's uterus.
Statements:
- Sperm is not needed for this process
- Surrogate mother can grow the embryo in her uterus.

If number of turns of wire in primary coil of a transformer shown in the diagram is 4 times more than that in secondary coil. What will be the value of secondary voltage?