Related Questions

Which of the following statements must be false? I. Debaters Y and C are never selected together. II. Debaters Z and B are never selected together . III. Debaters Z and D are never selected together .
A Only I
B Only II
C Only III
D All of these
City High School must put together a debating team consisting of four debaters.There are candidates of equal ability : X,Y and Z who are all seniors; and A,B,C and D who are all juniors..The school requires that there should be two seniors and two juniors in the team.It is also necessary that all of the debaters be able to work with one another. *Debaters Y and A cannot work together. *Debaters Z and C cannot work together. *Debaters A and B cannot work together. which of the following statements must be false? 1.Debaters Y and C are never selected together. 2.Debaters Z and D are never selected together. 3.Debaters Z and D are never selected together.
A Only I
B Only II
C Only III
D All of these
Reactor used in the production of polyvinyl chloride (PVC) is made of
A Nickel or glass lined steel
B Aluminium
C Tantalum
D Lead
Polyvinyl alcohol is used as a
A Cation/anion exchanger
B Water soluble adhesive
C Textile fibre
D Non-sticky coating on frying pans
Polyvinyl chloride (PVC) is
A A thermosetting material
B A condensation polymerisation product
C Made by employing emulsion polymerisation
D None of these
Polyvinyl chloride containers are not suitable for storing
A Foodstuffs
B Woolen clothes
C Metallic powder
D None of these
Polyvinyl chloride (PVC)
A Is produced by polycondensation reaction
B Uses either emulsion or suspension polymerisation methods
C Can be made thermosetting by adding a plasticiser
D Softening temperature is 200°C
For obtaining vinyl chloride acetate, the method used, is
A Addition polymerization
B Condensation polymerization
C Co-polymerization
D None of these
The molecularity and the order of reaction respectively, for the hydrolysis of methyl acetate in presence of acids are
A 2 & 1
B 11 & 2
C 2 & 2
D 1 & 1
__________ polymer is produced by the copolymerisation of vinyl chloride-vinyl acetate.
A Fibrous
B Leathery
C Rubbery
D Hard

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