Questions

Shortest of all the days is observed on Decenber 22

The oldest generally accepted fossils of large animals range in age from 565 to 550 million years old.

The Law of Definite Proportion states that the same compound, wherever found or however made, always contains the same elements combined together in the same fixede ratio by weight.

The government on 28th December, 2016 appointed Viral Acharya as the Deputy Governor of the RBI. He will be joining the ranks of NS Vishwanathan, SS Mundra, R Gandhi as one of four Deputy Governors under RBI Governor Urjit Patel. Acharya has been serving as a Professor of Economics at the New York University Stern School of Business since 2008.

TST 7.5 is a raising edge-triggering interrupt.

Lagoons are formed along the coasts by the action of winds and waves. They are commonly found off the deltas of large rivers such as the Nile and Ganges.

In chemistry, a metal is an element that readily forms positive ions (cations) and has metallic bonds. Metals are opaque, lustrous elements that are good conductors of heat and electricity. Most metals are malleable and ductile and are, in general, denser than the other elemental substances.

Examples of metals are aluminium, copper, iron, tin, gold, lead, silver, titanium, uranium, and zinc.

Here Se - Selenium is an element but is not a metal, S - Sulphur is not a metal and I - Iodine is also not a metal.

Hence, Zn - Zinc is the only metal in the given options.