1ordinary table salt is sodium chloride what is baking

Question

1)Ordinary table salt is sodium chloride. What is baking soda

2)Ozone hole refers to

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

4)Pollination is best defined as

5)Plants receive their nutrients mainly from

6)Movement of cell against concentration gradient is called