Question

some imp topics for science board exams.hope this helps you.
1.snells law
2.refractive index
3.why is star twinkle
4.tydall effect
5.right hand thumb rule
6.flemings right and left hand rule
7.short circuiting
8.decomposition reaction with example
9.combition reaction
10.double displacement reaction
11.redox reaction
12.rencitity and how to prevent it
13.corrosion and how to prevent
14.character of acid and base
15.explain the importance of variation
16.explain the importance of DNA copying
17.dihydrate and monohydrate cross
18.aquas rega
19.difference b/w Mendeleev's and modern periodic table.

these are some important heading Which help you to score good.

Answer 1

thanks a lot :))

I was really Searching for them :))