The acid which is secreted by the glands in the stomach wall is
1). sulphuric acid
2). hydrochloric acid
3). nitric acid
4). phosphoric acid
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1. Which among the following elements is found in maximum percentage in the human body ?
2. Which of the following is used as filler in tyre of rubber ?
3. Helium gas is filled in ballons because
4. The process which does not evolve CO2 in air is
5. Alcoholic ( OH) group can be identified by
6. Percentage of lead in lead pencils is
7. Which among the following is false about acids?
9. Which of the following is the main nitrogenous waste in humans ?