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Chemistry

Chemistry
Peroxyacetyl nitrate is a

Plant hormone
Acidic dye
Secondary pollutant
Vitamin

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Chemistry
Who modified Bohr's theory by introducing elliptical orbits for electron path

Hund
Thomson
Rutherford
Sommerfeld

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Chemistry
What are the number of moles of CO2 which contains 16 g of oxygen?

0.25 mole
0.4 mole
0.5 mole
0.2 mole

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Chemistry
'All the four quantum numbers of two electrons in an atom are not the same.' It is the law of –

Exclusion Principle of Pauli
Hund's rule of maximum multiplicity
Avogadro's Law
Uncertainty Principle of Hiesenberg

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Chemistry
Aluminium chloride is

Lewis Base
Arrhenius Acid
Lewis Acid
Bronsted Lowry Acid

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Chemistry
What happens when a chemical bond is formed ?

Energy is always absorbed
Energy is neither released nor absorbed
Energy in always released
More energy is released than is absorbed

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MORE MCQ ON Chemistry

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