Questions

Find the odd one out.

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9 questions · self-marked practice — reveal the answer and mark yourself.

Question 11 Mark
Lubricants, Electrodes, Ornaments, Arc Lamps
Answer
Ornaments. Ornaments are made from diamonds while rest all are made from graphite.
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Question 21 Mark
Peat, Charcoal, Lignite, Bituminous
Answer
Charcoal. Charcoal is a non-crystalline form of carbon while rest all are types of coal.
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Question 31 Mark
Carbohydrates, Coal, Proteins, Fats
Answer
Coal. Coal is a fossil fuel while rest all are carbonaceous nutrients.
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Question 41 Mark
Cotton, Silk, Proteins, Wool
Answer
Proteins. Proteins are carbonaceous nutrients while rest all are natural fibres.
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Question 51 Mark
Coal, Petroleum, Natural gas, Cotton
Answer
Cotton. Cotton is a natural fibre while rest all are fossil fuels.
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Question 61 Mark
Diamond, Fullerene, Graphite, Methane.
Answer
Methane. It is a marsh gas while rest are allotropes of carbon.
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Question 71 Mark
$C_2H_2, C_3H_8, C_2H_6, CH_4.$
Answer
$C_2H_2$​​​​​​​. It is an unsaturated hydrocarbon with triple bonds while rest are saturated hydrocarbons with single bonds between two carbon atoms.
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Question 81 Mark
$CH_4, C_2H_6, C_3H_8, CaCO_3.$
Answer
$CaCO_3.$ It is a salt which is an inorganic’ compound, while rest are hydrocarbon compounds, i.e. organic compounds.
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Question 91 Mark
Propane, Methane, Ethene, Pentane.
Answer
Ethene. It is an unsaturated hydrocarbon with double bond between two carbon atoms while rest are saturated hydrocarbons with single bond between two carbon atoms.
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