GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 052

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 052

511). The number of isomers in the aromatic organic compound with molecular formula C7H8O
is
A). 2
B). 3
C). 4
D). 5

Answer: 5


   
512). Silver nitrate produces a black stain on skin due to
A). being strong reducing agent
B). its corrosive action
C). its reduction to metallic silver
D). none of these

Answer: its reduction to metallic silver


   
513). Copper sulphate solution is acidic in nature due to
A). hydrolysis
B). ionisation
C). presence of sulphate ions
D). none of these

Answer: hydrolysis


   
514). A white powder, insoluble in water dissolves in ammonium hydroxide, could be
A). barium sulphate
B). aluminium oxide
C). silver chloride
D). calcium carbonate

Answer: silver chloride



515). Epsom salt is
A). ZnSO4.7H2O
B). FeSO4.7H2O
C). MgSO4.7H2O
D). None of these

Answer: MgSO4.7H2O


   
516). Biogas mainly contains
A). carbon-dioxide
B). oxygen
C). methane
D). nitrogen

Answer: methane


   
517). Acid rain is caused by the pollutants
A). CO and CO2
B). CO2 and O3
C). N2 and CO2
D). N2O and SO2

Answer: N2O and SO2



   
518). Acetyl salicylic acid is commonly used as
A). teargas
B). a fertilizer
C). a pain killer
D). a sedative

Answer: a pain killer


   
519). 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

Answer: 1% solution of sodium chloride in water