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Chemistry

Chemistry
The natural source of hydro-carbon is

Carbohydrates
Biomass
Coal
Crude oil

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Chemistry
Interveinal necrotic spots on leaves appear due to

NO2injury
O3injury
SO2injury
HF injury

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Chemistry
Biofertilizers convert nitrogen to ________ .

Nitrogenase
Ammonia
Amino acids
Nitrates

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Chemistry
Which of the following electrodes is used in strongly alkaline solution

Mercury - mercuric oxide electrode
Mercury - mercurous sulphate electrode
Mercury - mercurous chloride electrode
Silver - silver chloride electrode

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Chemistry
Which gas is most stable at room temperature

O2
F2
N2
H2

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Chemistry
How many neutrons does iron have

26
30
8
13

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MORE MCQ ON Chemistry

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