Question

b). -CH2
out of given four alternatives.
1) The image obtained by concave lens is always
a) virtual and errect
b) real and inverted.
c) virtual and inverted
d) real and errect
2) While going from one member to the next in to a homologous series
group is added.
a)-CH
c) -CH,
d) -CH,
4.
3) The chemical reaction of iron nail with copper sulphate solution is
reaction. a) combination b) decomposition
c) displacement d) double displacement
4) The relative humidity at the dew point is
a) 60% b) 40%
c) 100% d) 50%
5) The refractive index of is the highest
a) diamond b) crown glass c) ruby
d) ice​

Answer 1

Answer:

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Answer 2

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