GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 049
481). Sodium thiosulphate is widely used in photographv. Its main role in photographic is due to
A). reduction
B). oxidation
C). complex formation
D). photo decomposition
Answer: reduction
482). If the percentage of oxygen in a metallic oxide is 33.33%, then its equivalent mass is
A). 66
B). 16
C). 32
D). 50
Answer: 32
483). In nature borax occurs as
A). Tincal
B). Colemanite
C). Tridymite
D). Borasite
Answer: Tincal
484). Match the items of list I with list II and select the correct answer using the codes given below the lists:
List - I List ll
a) Neutral ferric chloride solution 1) identification of sulphur in organic compounds
b) Fehling's solution 2) To identify phenolic group
c) Sodium nitroprusside solution 3) To identify phosphate
d) d) Ammonium molybdate reagent 4) To identify reducing sugars
Codes:
a b c d
A). 3 1 4 2
B). 2 4 1 3
C). 2 3 4 1
D). 3 2 4 1
Answer: 2 4 1 3
485). Petroleum mainly contains
A). aliphatic hydrocarbons
B). aromatic hydrocarbons
C). aliphatic alcohols
D). none
Answer: aromatic hydrocarbons
486). Bhopal gas tragedy of 1984 was caused by one of the following compounds:
A). CO
B). COCl2
C). Methyl isocyanide
D). Methyl isocyanate
Answer: Methyl isocyanate
487). pH of blood is
A). 8
B). 7.4
C). 6.4
D). 4
Answer: 7.4
488). The blue colour of water in the sea is due to
A). absorption of other colours except blue by water molecules
B). scattering of blue light by water molecules
C). refraction of blue light by impurities in sea water
D). reflection of blue sky by sea water
Answer: scattering of blue light by water molecules
489). The acid present In vinegar is
A). CH3COOH
B). H2SO4
C). HCl
D). HNO3
Answer: CH3COOH
490). When a lead storage battery is discharged
A). SO2 is evolved
B). lead is formed
C). lead sulphate is consumed
D). H2SO4 is consumed
Answer: H2SO4 is consumed
A). reduction
B). oxidation
C). complex formation
D). photo decomposition
Answer: reduction
482). If the percentage of oxygen in a metallic oxide is 33.33%, then its equivalent mass is
A). 66
B). 16
C). 32
D). 50
Answer: 32
483). In nature borax occurs as
A). Tincal
B). Colemanite
C). Tridymite
D). Borasite
Answer: Tincal
484). Match the items of list I with list II and select the correct answer using the codes given below the lists:
List - I List ll
a) Neutral ferric chloride solution 1) identification of sulphur in organic compounds
b) Fehling's solution 2) To identify phenolic group
c) Sodium nitroprusside solution 3) To identify phosphate
d) d) Ammonium molybdate reagent 4) To identify reducing sugars
Codes:
a b c d
A). 3 1 4 2
B). 2 4 1 3
C). 2 3 4 1
D). 3 2 4 1
Answer: 2 4 1 3
485). Petroleum mainly contains
A). aliphatic hydrocarbons
B). aromatic hydrocarbons
C). aliphatic alcohols
D). none
Answer: aromatic hydrocarbons
486). Bhopal gas tragedy of 1984 was caused by one of the following compounds:
A). CO
B). COCl2
C). Methyl isocyanide
D). Methyl isocyanate
Answer: Methyl isocyanate
487). pH of blood is
A). 8
B). 7.4
C). 6.4
D). 4
Answer: 7.4
488). The blue colour of water in the sea is due to
A). absorption of other colours except blue by water molecules
B). scattering of blue light by water molecules
C). refraction of blue light by impurities in sea water
D). reflection of blue sky by sea water
Answer: scattering of blue light by water molecules
489). The acid present In vinegar is
A). CH3COOH
B). H2SO4
C). HCl
D). HNO3
Answer: CH3COOH
490). When a lead storage battery is discharged
A). SO2 is evolved
B). lead is formed
C). lead sulphate is consumed
D). H2SO4 is consumed
Answer: H2SO4 is consumed
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