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Chemistry

Chemistry
Which of the following is not an addition polymer

Polystyrene
Polythene
Nylon
PVC

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Chemistry
Which of the following is used to denature ethanol ?

Propyl alcohol
Methyl alcohol
Methane
Phenol

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Chemistry
Copper substances when exposed to air gains a green coating due to the formation of:

CuO
Cu(NO3)2
CuSO4
CuCO3 Cu(OH)2

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

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

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Chemistry
Exposure to mixtures of chemicals are greater than expected on the basis of effects of exposure to each chemical individually. This is known as

Additives
Synergism
Independent
Antagonism

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Chemistry
The method of concentrating the ore which makes use of the difference in density between ore and impurities is called

leaching
liquation
magnetic separation
levigation

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MORE MCQ ON Chemistry

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