SCIENCE IMPORTANT QUESTION FOR CLASS 9
Ans =Gold foil
2) According to which scientist atom is indivisible
Ans= Delton
3) Wright symbol of iron
Ans=Fe
4) Air is
Ans= Mixture
5)What is the the boiling point of water
Ans= 100 degree Celsius
6) What is the percentage of of carbon dioxide
Ans=0.03%
7)What is the reason of decay of of ozone layer
Ans=Chlorofluorocarbon
8)How much area surrounded by water
Ans=75%
9)Which of the following responsible for infected disease
a) Air b)microbes c) all of these
Ans = all of these
10)Out of these which disease caused by virus
a) Cholera b)malaria c)dengue
Ans= dengue
11) Bat is belong to phylum
a)Aves b)amphibian c)reptiles d)mammals
Ans=mammals
12)Cnidocytes are present in in
Ans=Cnidaria
Hydrogen=H
Carbon=C
Magnesium=Mg
Phosphorus=P
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