Match List I with List II and select the correct answer using the code given below the Lists List I ...........

General Science (NDA) Chemistry

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Match List I with List II and select the correct answer using the code given below the Lists:

List I (Noble gas) List II (Use)

A. Argon 1. In lights for advertising display

B. Neon 2. Airport landing lights and in light houses

C. Krypton 3. Light in photographer’s flash gun

D. Xenon 4. In tungsten filament to last longer

Code:

A B C D

3 1 2 4

3 2 1 4

4 2 1 3

4 1 2 3

Explanation:

Noble gas, any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table. The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og). The noble gases are colourless, odourless, tasteless, nonflammable gases. They traditionally have been labeled Group 0 in the periodic table because for decades after their discovery it was believed that they could not bond to other atoms; that is, that their atoms could not combine with those of other elements to form chemical compounds. Their electronic structures and the finding that some of them do indeed form compounds has led to the more appropriate designation, Group 18.