Diaphragms are contraceptive devices used by the females. Choose the correct option from the statements given below:

1. They are introduced into the uterus
2. They are placed to cover the cervical region
3. They act as physical barriers for sperm entry
4. They act as spermicidal agents

During the agricultural revolution, all of the following transformed the economy, except

The number of live births per thousand persons in a year is termed as

Which of the following states/union territories has the lowest sex ratio in India?

This is the method of abortion most commonly used during the first trimester.

From the sexually transmitted diseases mentioned below, identify the one which does not specifically affect the sex organs:

Flood can be prevented by

Which pill is known as " the abortion pill"?

What does NPP stand for?

What does census provide us?