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CHEMISTRY

Chemistry
The source of energy that causes the least global warming is

Coal
Petroleum
Geothermal energy
Natural Gas

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Chemistry
Which of the following fuels causes minimum environmental pollution?

Kerosene
Hydrogen
Diesel
Coal

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Chemistry
Biofertilizers convert nitrogen to ________ .

Ammonia
Nitrates
Nitrogenase
Amino acids

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Chemistry
The elements in the modern Periodic table are arranged according to their

Mass number
Atomic number
Neutron number
Atomic Weight

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Chemistry
Periodic table contains how many periods

10
7
8
6

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