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Chemistry

Chemistry
An electric iron has a heating element made of :

Copper
Nichrome
Zinc
Tungsten

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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

ozone
oxygen
helium
methane

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Chemistry
Which one of the following organic compound is used to remove stains of iron compounds?

Phthalic acid
Cinnamic acid
Oxalic acid
Benzoic acid

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Chemistry
Most poisonous pollutant in water is

Detergent
Zinc
Phosphate
Arsenic

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Chemistry
The gas used for filling weather balloons is

Hydrogen
Helium
Air
Nitrogen

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Chemistry
Emulsifier is an agent which

Homogenizes the emulsion
Accelerates the dispersion
Aids the flocculation of emulsion
Stabilizes an emulsion

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MORE MCQ ON Chemistry

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