Which of the following gases is present under pressure in soft drinks?
1). Oxygen
2). Nitrogen
3). Carbon dioxide
4). Nitrous oxide
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2. The major harmful gas emitted by automobile vehicles which causes air pollution is
3. The Bhopal tragedy was caused by the gas
4. Which of the following is not a derivative of barbituric acid?
5. The 'Blue Water Policy' was introduced by the Portugese leader_________
6. Anions are formed by _____.