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Chemistry

Chemistry
Silicon is used in

All of these
Transistors
Semiconductors
Solar energy devices

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Chemistry
Litmus is obtained from

A bacterium
Lichen
An alga
A fungus

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Chemistry
The iron ore magnetite consists of

Fe2O3
Fe3OH4
3Fe2O3 .. 3H2O
FeCO3

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Chemistry
When there are two electrons in the same orbital, they have:

No spin
Same or opposite spin
Opposite spin
Same spin

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Chemistry
The most suitable unit for expressing nuclear radius is :

Fermi
Micron
Nanometre
Angstrom

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Chemistry
The anode in a dry cell consists of

Copper
Zinc
Cadmium
Graphite

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MORE MCQ ON Chemistry

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