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Chemistry

Chemistry
Which one element from below list is liquid at room temperature

Bromine
Lead
Argon
Zinc

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Chemistry
Brine refers to :

Sweet water
Starch water
Salt water
Pure water

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Chemistry
An alloy used in making heating elements for electric heating device is

German Silver
Solder
Nichrome
Alloy Steel

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Chemistry
If the equilibrium constants for the systems H2 + I2 ? 2HI and 2HI ? H2 + I2 are K1 and K2 respectively, the relationship between K1 and K2 is :

K 1 = 1 /K2
K1 = K2/2
K1 = K2
K1 = 2K2

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Chemistry
Sulphur dioxide level in the atmosphere can be reduced by using

Static electricity to attract it in factory chimneys
More efficient car engines
Catalytic converters in industry
Low - sulphur fuels

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Chemistry
Carbon footprint can be reduced by

All of these
Commuting by public transport
Recycling waste materials
Using energy efficient appliances

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MORE MCQ ON Chemistry

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