Q.1
Paraffins are obtained by ______ process from petroleum.
  • a) fractional distillation
  • b) sedimentation
  • c) filtration
  • d) fermentation
Q.2
Paraffins are mostly used as _______
  • a) dye
  • b) lubricant
  • c) catalyst
  • d) coolent
Q.3
Liquid paraffin is used as ________
  • a) Dye
  • b) Medical purposes
  • c) Inhibitor
  • d) Catalyst
Q.4
What is the general formula for Naphthenes?
  • a) CnH2n+2
  • b) CnH2n
  • c) CnH2n-6
  • d) CnH2n-2
Q.5
Naphthenes are also called as _______
  • a) cyclo alkanes
  • b) aromatics
  • c) cyclo alkenes
  • d) cyclo alkynes
Q.6
Naphthenes having more thanC-atoms are called as ________
  • a) cyclo alkenes
  • b) cyclo alkanes
  • c) cyclo paraffins
  • d) cyclo alkynes
Q.7
Olefins are slightly soluble in ___________
  • a) water
  • b) alcohol
  • c) kerosene
  • d) ethanol
Q.8
The chemical structure of Olefins can be given by ________
  • a) –(–CH2—CH2–)n—
  • b)
  • c) –(–CH2—CH–)n—
  • d) –(–CH2—CH3–)n—
Q.9
Olefins containing 2 to 4 carbon atoms are ______ at ordinary temperature.
  • a) solid
  • b) liquid
  • c) gaseous
  • d) semisolid
Q.10
Aromatic compounds are produced from ________
  • a) natural gas
  • b) coal tar
  • c) oil gas
  • d) heavy gas
Q.11
Aromatic compounds are _____ with water.
  • a) dissolves
  • b) immiscible
  • c) forms lump
  • d) easily dissolves
Q.12
The flame colour of the aromatic compounds is ________
  • a) yellow
  • b) orange
  • c) green
  • d) pink
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