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Chemistry

Chemistry
The octane number of zero is assigned to

2-methyl octane
n-heptane
iso-octane
3-methyl octane

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Chemistry
Cyanide poisoning causes death in seconds because

It causes cardiac arrest
It breaks the electron transport chain
It denatures enzymes of the heart/muscle
It causes Lysis of red blood cells

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Chemistry
Which of the following methods is used in determining the number average molar mass of a macromolecule

Osmotic pressure
Light scattering
Viscosity
Sedimentation equilibrium

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Chemistry
Main pollutants released from iron and steel industry are

CO2, H2S and NO2
CO2, NO2 and SO3
NO, SO3 and H2S
CO, CO2 and SO2

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Chemistry
The green colour seen in firework displays is due to the chloride salt of :

Barium
Sodium
Strontium
Calcium

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Chemistry
Aluminium chloride is

Lewis Base
Lewis Acid
Arrhenius Acid
Bronsted Lowry Acid

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