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Chemistry

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

Thomson
Hund
Sommerfeld
Rutherford

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Chemistry
Which of the following is the petroleum wax ?

Carnauba wax
Jojoba wax
Paraffin wax
Bees wax

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Chemistry
The wire of flash bulb is made of:

Barium
Magnesium
Copper
Silver

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Chemistry
Percentage of lead in lead pencils is

31-66
40
80

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Chemistry
Solder metal is an alloy of

Copper and zinc
Copper and tin
Lead and antimony
Lead and tin

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Chemistry
By-product obtained by soap industry is

Naphthalene
Caustic soda
Glycerol
Caustic potash

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MORE MCQ ON Chemistry

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