The practise of having two wives or husbands at a time is called :

Answer: Option B

Explanation:

Bureaucracy means नौकरशाही.

Democracy means Government by the People (प्रजातंत्र).

Gerontocracy means Government by old men.

Kekistocracy means Government run by worst citizen.

Answer: Option B

Explanation:

Foeticide means murder of a foetus.

Fratricide means murder of one's brother.

Homicide means murder of a man/woman.

Answer: Option D

Explanation:

Psephologist meaning in Hindi : चुनाव विश्लेषक

Anthropologist means One who studies the evolution of mankind (मानवविज्ञानी).

Cartographer means One who draws maps (मानचित्रकार).

Laxicographer means One who complies a dictionary (कोश-लेखक).

Answer: Option D

Explanation:

Drone means sound made by Beetles.

Jingle means sound of the bells.

Chrip means sound of the birds.

Answer: Option B

Explanation:

Mew means Sound of the cats.

Clank means Sound of the chains.

Low means Sound of the Cattle.