GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 070

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 070

691). Diabasic acid is
A). acetic acid
B). phosphoric acid
C). sulphuric acid
D). nitric acid

Answer: sulphuric acid


   
692). Element which is an enemy of copper
A). sulphur
B). carbon
C). chlorine
D). nitrogen

Answer: sulphur


   
693). Which one of the following is a chemical reaction?
A). sublimation of camphor
B). combustion of carbon
C). melting of ice
D). dissolution of sugar in water

Answer: combustion of carbon

   
694). The element used in lead pencils is
A). carbon
B). zinc
C). lead
D). tin

Answer: carbon

   
695). Carbon monoxide is
A). acidic
B). basic
C). natural
D). amphoteric

Answer: amphoteric



696). The amount of nitrogen present in atmospheric air is about
A). 0.58
B). 0.78
C). 0.98
D). 0.68

Answer: 0.78


   
697). Molecular weight = a×vapour
density is
A). 1
B). 2
C). 3
D). 4

Answer: 2


   
698). Metal ore, galena contains
A). silver
B). zinc
C). lead
D). magnesium

Answer: lead


   
699). DDT is an
A). insecticide
B). explosive
C). antibiotic
D). enzyme

Answer: insecticide


   
700). Rare gases are
A). di-atomic
B). tri-atomic
C). mono-atomic
D). none of the above

Answer: mono-atomic