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Chemistry

Chemistry
Brass is a

Heterogeneous mixture
Element
Homogeneous mixture
Compound

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Chemistry
Nylon is made up of :

Polyethylene
Polyester
Polyamide
Polypropylene

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Chemistry
Match the List-I with List-II and select the correct answer using the codes given below the listsList-I (Green house gas)List-II(Major source)F.Carbondioxide1.Enteric fermentation in cattleG.Methane2.Burning of fossilH.Chloroflro carbons3.Mercury compounds in waste waterJ.Nitrous oxide4.Nylon production 5.Air conditioner and refrigeration unitsCodes :FGHJA.2154B.3421C.3241D.1234

B
D
A
C

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Chemistry
If all bullets could not be removed from gun shot injury of a man, it may cause poisoning by

Iron
Arsenic
Mercury
Lead

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Chemistry
Which one is a sublime substance?

Iodine
Sugar
Potassium Iodide
Table salt

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Chemistry
If lime water is kept in the air, it turns milky due to presence of :

Nitrogen
Oxygen
Sulphurdioxide
Carbondioxide

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