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Chemistry

Chemistry
Nucleus of an atom consists of.

Electron, Proton and Neutron
Neutron
Proton and Neutron
Proton

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Chemistry
Which of the following metals form an amalgam with other metals ?

Lead
Tin
Mercury
Zinc

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Chemistry
The ionic radii of N3-, O2-, F- and Na+ follows the order

O2- > F- > Na+ > N3-
N3- > O2- > F- > Na+
Na+ > O2- > N3- > F-
N3- > Na+ > O2- > F-

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Chemistry
The 'solid waste' is also known as

Toxic waste
Sludge
Scrubber
Sedge

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Chemistry
Stalactites and Stalagmites form due to the precipitation of :

MgCl2
CaCO3
MgCO3
CaCl2

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Chemistry
If a buffer solution is diluted its pH

Remains same
Is decreased
Is increased
Will slowly increase and then it will decrease

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