Questions

The disease that has been eradicated from the world is small pox. Smallpox was an infectious disease caused by one of two virus variants, Variola major and Variola minor. The last naturally occurring case was diagnosed in October 1977 and the World Health Organization (WHO) certified the global eradication of the disease in 1980.

The State Executive has temporary law-making power in emergent situations under the Constitution of India. And the Governor is the head of the State Executive. So, the ordinance making power confers on him by the Constitution itself. But this is not a discretionary power. The ordinance making power of the Governor is co-extensive with the legislative power of the State Legislature to make laws. He can promulgate ordinances only on the subjects on which the State Legislature has power to make laws under the Constitution.

An ionic bond is formed between two molecules when transfer of valency electrons take place between them. 

Among the given options, CH4 is a non polar molecule with symmetrical tetrahedral shape.

Afghan-India Friendship Dam is previously called as Salma Dam between India and Afghanistan on Hari river.