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Chemistry

Chemistry
Which of the following elements is not present in stainless steel?

Nickel
Chromium
Iron
Tungsten

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Chemistry
Brass is a solution of molten copper in

Solid zinc
Molten tin
Gaseous zinc
Molten zinc

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Chemistry
Which of the following is caused by the higher concentration of Nitrogen and Phosphorous ?

Eutrophication
Hardness
Alkalinity
Acidity

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Chemistry
London smog is found in

Summer during day time
Summer during morning time
Winter during morning time
Winter during day time

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Chemistry
Cyanide poisoning causes death in seconds because

It causes cardiac arrest
It causes Lysis of red blood cells
It breaks the electron transport chain
It denatures enzymes of the heart/muscle

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Chemistry
The gas produced in marshy places due to decomposition of vegetation is

Carbon monoxide
Carbon dioxide
Methane
Sulphur dioxide

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MORE MCQ ON Chemistry

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