GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 068

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 068

671). The oxidation number chromium in K2Cr2O7 is
A). 6
B). 3
C). 1
D). 0

Answer: 6


   
672). The indicator used in the titration between KMnO4 and FeSO4 is
A). phenolphthalein
B). methyl orange
C). methyl red
D). none

Answer: none


   
673). ᐃH=

A). ᐃE+ᐃnRT
B). ᐃE-ᐃnRT
C). ᐃE + RT^ᐃn
D). ᐃE-RT^ᐃn

Answer: ᐃE+ᐃnRT



   
674). The shape of methane is
A). square planar
B). square pyramidal
C). tetrahedron
D). octahedron

Answer: tetrahedron


   
675). If pH = 7, pOH = ?
A). zero
B). 7
C). 14
D). none of these

Answer: 7


   


676). The lewis base among the following is
A). NH3
B). NH4Cl
C). NaOH
D). Al(OH)3

Answer: Al(OH)3


  
677). The non reducing sugar among the following is
A). glucose
B). fructose
C). sucrose
D). maltose

Answer: fructose


   
678). The one, which is not a colligative property, is
A). elevation of boiling point
B). viscosity
C). lowering of vapour pressure
D). osmotic pressure

Answer: viscosity


   
679). The ion that does not cause hardness of water is
A). Na^+
B). Mg^2+
C). CO3^2-
D). HCO3^+

Answer: Na^+



   
680). Rocket fuel is
A). oxygen
B). oxygen and methane
C). ozone
D). hydrazine and dinitrogen tetroxide

Answer: hydrazine and dinitrogen tetroxide