1) Copper sulphate solution is acidic in nature due to
*a) hydrolysis
b) ionisation
c) presence of sulphate ions
d) none of these
2) A white powder, insoluble in water dissolves in ammonium hydroxide, could be
a) barium sulphate
b) aluminium oxide
*c) silver chloride
d) calcium carbonate
3) Epsom salt is
a) ZnSO4 )7H2O
b) FeSO4 )7H2O
*c) MgSO4 )7H2O
d) None of these
4) Biogas mainly contains
a) carbon-di-oxide
b) oxygen
*c) methane
d) nitrogen
5) Acid rain is caused by the pollutants
a) CO and CO2
b) CO2 )and O3
c) N2 andCO2
*d) N2 O andSO2
6) Acetyl salicylic acid is commonly used as
a) tear gas
b) a fertilizer
*c) a pain killer
d) a sedative
7) Which solution will have the highest boiling point?
a) 1% solution of glucose in water
*b) 1% solution of sodium chloride in water
c) 1% solution of zinc sulphate in water
d) 1% solution of urea in water
8) The disaccharide present in milk is
a) sucrose
b) maltose
*c) lactose
d) cellotriose
9) Natural petroleum is a liquid mixture of paraffin hydrocarbons
a) C4 to C12
b) C1 to C20
c) C1 to C40
*d) C5 to CO15
10) Which gas is commonly filled in giant balloons?
a) hydrogen
*b) helium
c) hydrogen sulphide
d) carbon-di-oxide
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