Related Questions

Phthalic anhydride is produced by the oxidation of
A Naphthalene
B Benzene
C Toluene
D Aniline
Molten phthalic anhydride is stored in a/an __________ vessel.
A Aluminium
B Nickel clad steel
C Lead lined steel
D Glass lined steel
Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale.
A Nickel
B Vanadium
C Alumina
D Iron
Manufacture of phthalic anhydride uses __________ as a catalyst.
A Ni
B Cr
C V2O5
D Al2O3
Polycondensation of saturated dicarboxylic acid with polyhydric alcohol produces
A Epoxy resin
B Polyamide
C Alkyd resin
D Phenolic resin
Phthalic anhydride is made by the
A Oxidation of naphthalene
B Oxidation of benzene
C Dehydrogenation of ethyl benzene
D None of these
Phthalic anhydride is used
A In making PVC
B As plasticisers
C In insecticides manufacture
D For making nylon-6
Alkyd resin e.g., glyptal resin formed by phthalic anhydride and glycerene is not used
A For surface coating of automobiles & air crafts
B For fibre making
C As plasticiser for PVC & nitrocellulose
D For film forming materials
In what ratio should a 20% methyl alcohol solution be mixed with a 50% methyl alcohol solution so that the resultant solution has 40% methyl alcohol in it?
A 1 : 2
B 2 : 1
C 1 : 3
D 3 : 1
The alcohol and water in a mixture are in the ratio of 7 : 8 respectively. If 11 litre water is added to it, then the ratio of alcohol and water in the new mixture becomes 3 : 5. What is the total quantity (in litres) of the alcohol in the new mixture?
A 21
B 24
C 35
D 32

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