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Chemistry

Chemistry
The fiber least prone to catch fire is

Cotton
Polyester
Terylene
Nylon

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Chemistry
The maximum number of isomers for an alkene with molecular formula C4H8 is

3
2
5
4

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Chemistry
The first metal used by man was

iron
gold
copper
bronze

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Chemistry
The orientation of an atomic orbital is governed by

Magnetic quantum number
Spin quantum number
Principal quantum number
Azimuthal quantum number

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Chemistry
Which of these acids is not organic in origin?

Oxalic acid
Citric acid
Sulphuric acid
Lactic acid

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Chemistry
In an oxygen molecule, two atoms are united by

Four bonds
One bond
Three bonds
Two bonds

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