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Chemistry

Chemistry
The oxidation number of nickel in K4[Ni(CN)4] is

Zero
8
–4
4

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Chemistry
Percentage of carbon in steel ranges from

4.0 to 6.0
1.5 to 3.0
0.1 to 1.5
3.0 to 4.0

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Chemistry
In an oxygen molecule, two atoms are united by

One bond
Four bonds
Two bonds
Three bonds

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Chemistry
Hardness of the water is commonly measured in terms of

Calcium carbonate equivalents
Calcium sulphate equivalents
Magnesium carbonate equivalents
Magnesium sulphate equivalents

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Chemistry
Cement containing excess amount of lime

Is quick setting
Becomes more strong
Is slow setting
Cracks during setting

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Chemistry
Epsom salt is used

In paper industry
As purgative
In softening water
In making tooth paste

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MORE MCQ ON Chemistry

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