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Chemistry

Chemistry
How many neutrons does iron have

30
26
13
8

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Chemistry
Extensively used nitrogenous fertilizer is

Ammonium sulphate
Ammonium nitrate
Urea
Nitro-lime

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Chemistry
Silicon is a

Nonconductor
Insulator
Semiconductor
Conductor

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Chemistry
Total number of halogen elements found in the periodic table is

3
8
5
13

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Chemistry
Which one of the following is not a characteristic feature of alloys? They are

Homogeneous systems
Compounds
Solutions
Mixtures

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Chemistry
In sugar solution,

Both are solvents
Both are solutes
Sugar is solute, water is solvent
Sugar is solvent, water is solute

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