Questions

A barometer is a tool that measures air pressure

A rising barometer indicates increasing air pressure, a falling barometer indicates decreasing air pressure.

In space, there is a nearly complete vacuum, so the air pressure is zero.

Padmalaya Nanda from Odisha will represent India at the 2017 Little Miss Universe beauty pageant competition, which is scheduled to be held in Georgia, United States from May 31. She will compete against 15 other contestants from around the world for the title of Little Miss Universe. Beside this, she will also lead India in the 2017 Little Miss World contest in Greece.

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.