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CHEMISTRY

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

Petroleum
Natural Gas
Coal
Geothermal energy

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Chemistry
Which of the following fuels causes minimum environmental pollution?

Diesel
Kerosene
Coal
Hydrogen

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Chemistry
Biofertilizers convert nitrogen to ________ .

Nitrogenase
Nitrates
Ammonia
Amino acids

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

Neutron number
Atomic number
Atomic Weight
Mass number

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Chemistry
Periodic table contains how many periods

8
10
6
7

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