Ozone consists of
1). Oxygen only
2). Oxygen and Nitrogen
3). Hydrogen and Carbon
4). Oxygen and Carbon
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1. The acid present in red ants is
2. Of the following commonly used materials, the one that is not an alloy is
3. The National Chemical Laboratoly (India) is located in
4. The gas used for artificial ripening of green fruit is
6. Submarines move under water. They have engines that run on
8. Rusting of iron takes place due to