What position has India got in the World Press Freedom Index -2021 released?

Read the given statement(s) and conclusions carefully and select which of the conclusions logically follow(s) from the 8 statement(s).
Statement: Sound is produced when something. Vibrates. The vibrating body causes the medium around it to vibrate.
Conclusions:
I. By medium, they mean only Air.
II. Sound is produced by vibration.

What comes next in the given series?
6C, 10F, 14I, 18L, ?

Pointing to a woman. Raghav said. "Her son is my daughter's uncle". How is the woman related to Raghav?

Select the institution that does not belong to the group.

Find the next number in the series.
4, 9, 20, 43, ?

If A is the sister of C and C is the wife of D. How D is related to A?

Choose the mirror image for the following figure.