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Chemistry

Chemistry
The number of electrons presents in H+ is

three
zero
one
two

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Chemistry
Which of the following is not an addition polymer

Nylon
Polythene
PVC
Polystyrene

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Chemistry
The monomers of dacron are

Ethylene glygol and phthalic acid
Decane and decanol
Ethylene glycol and terephthalic acid
Decanone and decanol

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Chemistry
Bee sting contains

An alkaline liquid
An acidic liquid
A corrosive liquid
A salt solution

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Chemistry
Which of the following laser types is used in a laser printer?

Dye laser
Gas laser
Semiconductor laser
Excimer laser

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Chemistry
Which of the following metals has least melting point ?

Gold
Silver
Mercury
Copper

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