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Chemistry

Chemistry
Saline soil contains

Hard rocks
High concentration of salt
Lot of moisture
None of these

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Chemistry
Curd is sour due to presenceof

Lactic acid
Acetic acid
Tartaric acid
Oxalic acid

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Chemistry
Candle is a mixture of

Paraffin was and stearic acid
Higher fatty acids and stearic acid
Bees wax and stearic acid
Bees wax and paraffin wax

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Chemistry
Which of the following is not a nucleon?

Proton
Neutron
Electron
Positron

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Chemistry
The most common cause of pollution of air is

Sulphur dioxide
Smoke
Carbon dioxide
Carbon monoxide

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Chemistry
Which of the following is used as non-stick coating for cooking utensils?

Teflon
Polystyrene
Perspex
Styrofoam

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