Questions

Before transferring the fish, the position is the man with the fish and the bucket of water. After transferring the position is: the man without the fish, but the fish inside the water in the bucket. Thus to know  whether there is any change in weight, it is enough to consider whether there is any change in weight when the fish in air is transferred into the water. The answer is there is no change as when in water though it loses weight due to upthrust of water on it, the level of water increases and exerts an equal force at the bottom.So, (c) is correct.

Makaibari is the world's first tea factory and was established in 1859 in Darjeeling, West Bengal. 

It is most expensive tea in India which costs around 1.12 lakhs for 1 kg of tea.

Hence, Makaibari is the costliest variety of Tea.

An Illustration is a visual image created to accompany words to depict them.

For undo the action or last action [Ctrl + Z] is used.

Monopoly is an economic term that describes a single company or entity controlling one hundred percent of the supply of a particular product. Carnegie Steel is one of the argest monopoly of steel industry during the Gilded age.

A rift valley is formed either due to upheaval of blocks on either sides of a fracture or due to subsidence of block between them.

Serve as debt manager to other banks is not a function of RBI Bank.