- Section 1
1. |
Ordinary table salt is sodium chloride. What is baking soda? |
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2. |
Ozone hole refers to |
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3. |
Pine, fir, spruce, cedar, larch and cypress are the famous timber-yielding plants of which several also occur widely in the hilly regions of India. All these belong to |
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5. |
Movement of cell against concentration gradient is called |
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