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Chemistry

Chemistry
Chemical name of vinegar is

Ethanol
Formaldehyde
Acetic acid
Acetone

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Chemistry
Sea water is saltier than rain water because

Sea animals are salt producing
Sea beds have salt producing mines
The air around the sea is saltish
Rivers wash away salts from earth and pour them into the sea

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Chemistry
When ice cubes are made, the entropy of water

Does not change
May either increase or decrease depending on the process used
Decreases
Increases

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Chemistry
Rutherford’s scattering experiment proved the presence of

Electrons in atoms
Neutrons in atoms
Nucleus in atoms
Atoms in all matter

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Chemistry
The charcoal used to decolourise brown sugar solution is

Animal charcoal
Sugar charcoal
Wood charcoal
Coconut charcoal

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Chemistry
Carbon footprint can be reduced by

Recycling waste materials
Commuting by public transport
Using energy efficient appliances
All of these

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MORE MCQ ON Chemistry

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