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Chemistry

Chemistry
The heat energy produced when the human body metabolises 1 gram of fat is

39 KJ
1 KJ
29 KJ
30 KJ

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Chemistry
The water pollution in river is measured by the dissolved amount of

Oxygen
Chlorine
Nitrogen
Ozone

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Chemistry
Bleaching powder is prepared by passing :

Chlorine over quick lirne
Chlorine over slaked lime
Carbon dioxide over slaked lime
Oxygen over slaked lime

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

Silver
Nickel
Zinc
Copper

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Chemistry
Concentration of a material which is lethal to 50% animal is called

ADI
LC50
LD50
NOAEL

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Chemistry
Magnalium is an alloy of

Aluminium and Magnesium
Magnesium and Tin
Aluminium and Zinc
Manganese and Magnesium

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