GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 051

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 051

501). Mohr's salt is
A). (NH4)2Fe(SO4)26H2O
B). (NH4)Fe(SO4)25H2O
C). (NH4)2Fe(SO4)24H2O
D). (NH4)Fe(SO4)26H2O

Answer: (NH4)2Fe(SO4)26H2O



   
502). The absorbent used in colour chromato-graphic method is
A). silica gel
B). benzene
C). acetone
D). ether

Answer: silica gel


   
503). The number of orbitals in f sub-shell energy level is
A). 3
B). 2
C). 5
D). 6

Answer: 6


   
504). In the periodic table, the elements present in the groups from 3 to 12 are known as
A). s-block
B). p-block
C). d-block
D). f-block

Answer: d-block


   
505). The effect which represents the splitting spectral lines by external magnetic field is
A). Zeeman effect
B). Stark effect
C). Raman effect
D). None of these

Answer: Zeeman effect


   
506). Match the following
Molecule                                Shape
a) Ammonia                           1) linear
b) Water                               2) planer
c) Borontrifluoride                   3) V-shaped
d) Carbon-dioxide                   4) Pyramid

Codes:
a b c d
A). 3 2 1 4
B). 3 1 4 2
C). 4 3 2 1
D). 1 2 3 4

Answer: 4 3 2 1


   
507). On the right hand side of the periodic table are the
A). metals
B). non-metals
C). metalloids
D). rare earths

Answer: non-metals


   
508). A solution of sodium acetate in water will
A). turn red litmus to blue
B). turn blue litmus to red
C). decolourise litmus
D). none of these

Answer: turn blue litmus to red


   
509). Which of the following elements electronegative?
A). oxygen
B). chlorine
C). nitrogen
D). fluorine

Answer: fluorine

   
510). Which one of the following is incorrectly matched?
A). Mohr's salt - FeSO4(NH4)2SO46H2O
B). Basic salt - NaCHO3
C). Basic salt - Pb(OH)NO3
D). Coordination salt (complex) - K[Ag(CN)2]

Answer: Basic salt - NaCHO3