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Chemistry

Chemistry
Glycol is used to manufacture which of the following ?

Nylon
Rubber
Terylene
Artificial silk

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Chemistry
Which of the following is not soluble in water ?

Zinc sulphate
Sodium sulphate
Lead Sulphate
Potassium sulphate

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Chemistry
The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is

oxygen
methane
helium
ozone

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Chemistry
Liquid Nitrogen boils at

97 Kelvin
54 kelvin
77 kelvin
82 Kelvin

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Chemistry
Which is a natural colloid ?

Cane-sugar
Urea
Sodium chloride
Blood

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Chemistry
The most commonly used chemicals in the artificial rainmaking or cloud seeding are

Silver Iodide (Ag I)
Dry Ice (Frozen CO2)
All of these
Sodium Chloride (NaCl)

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