Question

please answer all these questions... as 1,2nd 3 are of 3 marks..... 4 to 7 are of 2 marks nd 8 nd 9 are of 3 marks

Answer 1

1. Because Benzene is a Unsaturated Compound while ethane is a Saturated Compound.
3.CH4(Methane) causes greenhouse effect.
5. (i) Group 16
    (ii) Period 3
    (iii) 6 valence electrons
    (iv) valency is 2
6. Through Placenta.
7. Effect is Atmospheric Refraction. It is due to variation in densities between different layers.
8. (a) Bacteria, Fungi
   
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