GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 109

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 109

1081). The filament of gas-filled electric bulb is made of
A). platinum
B). tungsten
C). copper
D). silver

Answer: tungsten


   
1082). The dry ice is
A). ice blocks free from liquid water
B). ice mixed with sodium chloride
C). solid carbon dioxide
D). solidified heavy water

Answer: solid carbon dioxide


   
1083). 2n^2 formula was given by
A). Rutherford
B). Goldstein
C). Bohr-Bury
D). Chadwick

Answer: Bohr-Bury

   
1084). The value of ionic product of water at 298K is
A). 1×10^-7mol^2.L^-2
B). 1×10^-14mol^2.L^-2
C). 1×10^14mol^2.L^-2
D). 1×10^7mol^2.L^-2

Answer: 1×10^-14mol^2.L^-2


   
1085). The enzyme which converts glucose into ethyl alcohol is
A). diastase
B). invertase
C). zymase
D). maltase

Answer: zymase



1086). Sodium salts of fatty acids are
A). hard soaps
B). soft soaps
C). toilet soaps
D). shaving creams

Answer: hard soaps


   
1087). Which of the following concentrated acid mixtures is used to prepare aqua regia?
A). HCl+H2SO4
B). HCL+HNO3
C). HNO3+H2SO4
D). HCl+H3PO4

Answer: HCL+HNO3



   
1088). Which of the following is used as fungicide?
A). Carbon
B). Carbon tetrachloride
C). Sulphur
D). Copper

Answer: Sulphur


   
1089). The source of tartaric acid is
A). vinegar
B). lemon juice
C). grapes
D). milk

Answer: grapes


   
1090). Which of the following is not an ore?
A). Bauxite
B). Malachite
C). Zinc blende
D). Wrought iron

Answer: Wrought iron