Question

(A) Write the correct option number form given option below.
(1) If the refractive index of glass with respct to an is 3/2 what is the
(5)
refractive index of air with respect to glass?
(a)
(b) 3
(c) 3
(2) In galvanizing a thin coat of metal .............. is applied on iron or steel.
(a) Tin
(b) Chromium (c) Zinc (d) Nickel
(3) .... reaction occurs when iron nail is placed in aqueous solution of
copper sulphate.
(a) Displacement (b) Oxidation
(c) Decomposition (d) Combination
(4) Metal .... has the highest melting point.
ta) Tungsten (b) Sodium (c) Mercury (d) Gallium
(5) The persons having myopia use the spectacles of ...... lenses.
(a) Concate (b) Contex (c) Bicontex (d) Bifocal
estions
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Answer 1

Answer:

bhn kucch jada hi lamba option ho gaya hai sorry