GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 047

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 047

461). The substance used in the manufacture of high voltage insulators is
A). natural rubber
B). silicons
C). silicon carbide
D). synthetic rubber

Answer: silicons


  
462). Tobacco is preserved from drying out in
A). glycerol
B). glycol
C). ethanol
D). acetone

Answer: glycol

  
463). Match list l correctly with list II and select your answer using the codes given below:
List-l                                                                List-II
a) Nuclear model of an atom                            1) J. J. Thomson
b) Empirical atomic model                                2) Bohr
c) Elliptical orbits of electrons in an atom          3) Rutherford
d) Model of hydrogen atom                              4) Sommerfeld

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

Answer: 3 1 4 2


  
464). Which one of the following is incorrectly matched?
A). Mohr's salt -          1) FeSO4(NH4)2SO46H2O
B). Basic salt -            2) NaHCO3
C). Basic salt -            3) Cu(OH)NO3
D). Complex salt -       4) K4Fe(CN)6

Answer: Basic salt - 3) Cu(OH)NO3



  
465). Natural rubber is a polymer derived from
A). butadiene isoprene
B). ethylene
C). isoprene
D). propylene

Answer: isoprene



466). Butane dioic acid is
A). malonic acid
B). adipic acid
C). succinic acid
D). glutaric acid

Answer: succinic acid


  
467). carborandum is
A). Si
B). SiC
C). SiO2
D). SiCl4

Answer: SiC


  
468). 20Ca^40 and 19K^40 are
A). isomers
B). isotopes
C). isobars
D). isotones

Answer: isobars

  
469). Epsom salt is
A). ZnSO4.7H2O
B). MgSO4.7H2O
C). FeSO4.7H2O
D). None of these

Answer: MgSO4.7H2O



  
470). Which one of the following is an explosive?
A). Benzene hexachloride
B). Trinitro toluene
C). Tetraethy lead
D). Polyvinyl chloride

Answer: Trinitro toluene