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Chemistry

Chemistry
The pH of human blood is between :

44052
7.5-8
6.5-7
4.5-5

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Chemistry
The Bhopal gas tragedy was caused by the gas

Methyl Iso Cyanate
Methyl Iso Cyanide
Methyl Cyanide
Methyl chloride

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Chemistry
The ore which is found in abundance in India is

monazite
bauxite
magnetite
fluorspar

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Chemistry
When conc. H2SO4 is added to dry KNO3, brown fumes are evolved. These fumes are due to

SO2
N2O
NO2
SO3

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Chemistry
The trans-uranium elements are the chemical elements with atomic numbers greater than

92
86
89
96

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Chemistry
The high reactivity of fluorine is due to

small size of fluorine atom
its high electro negativity
availability of d-orbitals
strong F - F bond

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