The narrowest and most numerous tubes of lungs are termed as
1). Bronchus
2). Alveoli
3). Bronchioles
4). Hilum
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1. One of the constituents of tear gas is
2. What should a person on a freely rotating turn table do to decrease his (angular) speed ?
3. The presence of ozone in the stratosphere is responsible for
4. Which of the following metals form an amalgam with other metals ?
5. The common name for the compound having formal NaOH is
6. Refrigerators keep food unspoiled because
7. Mangrove plants show vivipary. This is —
8. The owl can see most clearly in total darkness because
9. Silver halides are used in photographic plates because they are