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Chemistry

Chemistry
The number of waves in n x 10th Bohr's orbit are

n2
n3
n
n-2

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

0.4 mole
0.25 mole
0.5 mole
0.2 mole

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Chemistry
Formation of ozone hole is maximum over

India
Africa
Europe
Antarctica

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Chemistry
Sodium is produced by the electrolysis of

Aqueous brine solution
Molten sodium chloride
Its cyanide complex
Molten sodium carbonate

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Chemistry
Which of the following has no unit

Electronegativity
Excitation potential
Electron affinity
Ionization energy

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Chemistry
In surgery, metal pins are used for joining together broken bones. These metal pins remain uncorroded in the body. What is the material of these pins?

Copper
Titanium
Iron
Aluminium

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