In addition to hydrogen the other abundant element present on Suns surface is
1). Helium
2). Neon
3). Argon
4). Oxygen
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2. Conversion of chemical energy into electrical energy occurs in
3. Cinnabar is an ore/mineral of
4. When a spoon is to be electroplated with nickel the spoon is
5. Which gas does not form the part of atmosphere ?
6. 435: Conduction band electrons have more mobility than holes because they
8. The molecular mass of a gas is