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Chemistry

Chemistry
Colour imparted to the Bunsen flame by strontium salt is

Crimson red
Bluish green
Apple-green
Brick red

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Chemistry
Among the fuels given below, the one with highest calorific value is

Natural gas
Wood
Coal
Coke

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Chemistry
Ionisation energy of nitrogen is greater than that of oxygen because nitrogen has

Stable half filled 2p sub level
High bond dissociation energy
High nuclear charge
Smaller atomic radius

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Chemistry
The new strain of bacteria produced by biotechnology in alcohol industry is

Escherichia coli
Bacillus subtilis
Pseudomonas putida
Saccharomyces cerevisiae

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Chemistry
The heaviest naturally occurring element is:

Polonium
Mercury
Uranium
Thorium

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Chemistry
Which one out of the following helps in burning ?

Carbon monoxide
Nitrogen
Oxygen
Carbon dioxide

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MORE MCQ ON Chemistry

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