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Chemistry

Chemistry
German silver, an alloy, does not contain the metal

Copper
Zinc
Silver
Nickel

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Chemistry
Nitrogen fixation is a process of

Assimilation of nitrate
Conversion of molecular nitrogen to ammonia
Conversion of organic nitrogen to proteins
Utilisation of nitrogen gas

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Chemistry
The 'solid waste' is also known as

Sludge
Scrubber
Sedge
Toxic waste

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Chemistry
The heat value of combustion of Gasoline is

47000 kJ/kg
39400 kJ/kg
12600 kJ/kg
14600 kJ/kg

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Chemistry
In arc welding, Argon is used because of its

High calorific value
Low reactivity with metal
Ability to lower the melting point of the metal
High flammability

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Chemistry
Which of the following fuels causes minimum environmental pollution?

Kerosene
Coal
Hydrogen
Diesel

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MORE MCQ ON Chemistry

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