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Chemistry

Chemistry
When conc. H2SO4 is added to dry KNO3, brown fumes are evolved. These fumes are due to

SO2
NO2
N2O
SO3

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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
Which of the following is not a nucleon?

Positron
Electron
Neutron
Proton

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Chemistry
Glycol is added to aviation gasoline because it

Reduces consumption of petrol
Reduces evaporation of petrol
Increases efficiency of petrol
Prevents freezing of petrol

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Chemistry
What is the element required for solar energy conversion ?

Beryllium
Tantalum
Ultra pure carbon
Silicon

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Chemistry
The chemical name of baking soda is

Sodium chloride
Sodium nitrate
Sodium bicarbonate
Sodium carbonate

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