Questions

Tin and Silver are malleable and good conductors of electricity. The other combinations have a non metal in them which are bad conductors.

True, the carbon in the ocean originates from the atmosphere. The oceanic surface water absorbs the carbon dioxide gas from the atmosphere and dissolves in it.

Lines of latitude measure north-south position between the poles.

Lines of latitude are imaginary reference lines that describe how far north or south a location on the Earth is from the Equator. The equator is defined as 0 degrees, the North Pole is 90 degrees north, and the South Pole is 90 degrees south. Lines of latitude are all parallel to each other, thus they are often referred to as parallels.

In the atom bomb, isotopes of uranium are  disintegrated with the release of a large amount of energy. Hence, the process is nuclear fission.

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Headquarters Kolkata, West Bengal, IndiaCoal India Limited (CIL) is an Indian state-controlled coal mining company headquartered in Kolkata, West Bengal, India and the largest coal-producing company in the world and a Maharatna company.