GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 044

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 044

431). Which one of the following is not contained in Portland cement?
A). Ca3Al2O6
B). Ca3SiO5
C). CaSiO4
D). Ca3(PO4)2

Answer: Ca3(PO4)2



  
432). Which one of the following fertilizers has the maximum percentage of nitrogen?
A). Ammonium sulphate
B). Urea
C). Calcium cyanamide
D). Calcium ammonium nitrate

Answer: Urea


  
433). Which one of the following metals occurs in nature in free state?
A). Gold
B). Sodium
C). Aluminium
D). Connor

Answer: Gold


  
434). Zinc is not present in
A). brass
B). bronze
C). solder
D). german silver

Answer: bronze


  
435). Dynamite was invented by
A). Edison
B). Fleming
C). Nobel
D). Bell

Answer: Nobel



436). Periodic table was given by
A). Faraday
B). Mendeleev
C). Arrhenius
D). Lavoisier

Answer: Mendeleev


  
437). Reduction is addition of
A). hydrogen
B). water
C). oxygen
D). benzene

Answer: hydrogen


  
438). The galvanised iron pipes are coated with
A). tin
B). lead
C). copper
D). zinc

Answer: zinc

  
439). Which one of the following is a mixture?
A). lime
B). table salt
C). sugar
D). sea water

Answer: sea water

  
440). The correct sequence in decreasing order of the proportion of the given gases in the atmosphere is
A). argon, carbon-di-oxide, oxygen
B). carbon-di-oxide, oxygen, argon
C). oxygen, argon, carbon-di-oxide
D). argon, oxygen, carbon-di-oxide

Answer: oxygen, argon, carbon-di-oxide