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91. Which of the following is having maximum double bonds? (NTSE Punjab, Stage-I, 2016-17)
Propanone
Benzene
Propene
Propanol
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92. Carbon atom in graphite is combined with how many other carbon atoms? (NTSE Punjab, Stage-I, 2016-17)
1
2
3
4
93. Which of the following organic molecules does not have carbon-carbon double bond? (NTSE Odisha, Stage-I, 2016-17)
C3H40
C3H40 2
C3H80
C6H60
94. Soaps are used to clean clothes. Which one is correct statement in this respect? (NTSE Odisha, Stage-I, 2016-17)
Soap is a sodium salt of an aromatic acid
During cleaning micelles are formed
Using soap hard-water cannot be distinguished
Soap can be used in hard-water for better cleaning of clothes
95. An organic compound A on treating with acidified potassium dichromate solution gives B with molecular mass 60 gm/mol. A on heating with conc. H2S04 at 443 K produces a gas that decolourises bromine water. The compound A is
n-propyl alcohol
iso-propylalcohol
Ethyl alcohol
Acetaldeyhde
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