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Download WorksheetWhich of the following in eliminations reaction
Chlorination of ethane
2.Hydration of ethene
3.Conversion of but- 1-ene into but-2-ene
4.Dehydration of ethanol
Which of the following compound gives a primary alcohol upon reaction with phenyl magnesium bromide
2-methyl oxirane
2.ethelyne oxide
3.ethyl formate
4.carbon dioxide
Which of the following compounds would not give tert-butyl alcohol when treated with excess magnesium bromide
Acetyl chloride
2.acetaldehyde
3.methyl acetate
4.acetic anhydride
Which among the following is highest acidic
Phenol
2.Para nitro phenol
3.Acetic acid
4.P-chloro acetic acid
The synthesis of aryl halides from benzene is best accomplished by
Friedel crafts reaction
2.Sandmeyer reaction
3.Heck reaction
4.Swarts reaction
The weight of your body shown on a weighing machine , when you are inside a lift which is going upward with some acceleration will be
Less than your actual weight
2.More than your actual weight
3.Same
4.None
10. If velocity of an electromagnetic wave in a medium is 3×10ˆ8 m/s then find refractive index of medium
A) 1
2.B) 2
3.C) 0.5
4.D) 0.25
9. The focal length of a convex mirror is 20 cm its radius of curvature will be
A) 10 cm
2.B) 20 cm
3.C) 30 cm
4.D) 40 cm
8. A person cannot see clearly an object kept at a distance beyond of 100 cm . Find the nature and the power of lens to be used for seeing clearly the object at infinity
A) concave , -1D
2.B) convex , -1D
3.C) concave , +1D
4.D) none
7. A thin convex lens of focal length 5 cm is used as a simple microscope by a person with normal near point located 25cm away . what is the magnifying power of the microscope
A) MP= 5
2.B) MP=4
3.C) MP= 6
4.D) MP=7
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