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Chemistry

Chemistry
Which is not an anasthetic agent in surgical operations?

Acetone
Chloroform
Nitrous oxide
Ether

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Chemistry
The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?

100 years
0.01 minute
13 days
3 billion years

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Chemistry
The third shell of an atom can have a maximum of ______ electrons

21
15
18
13

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Chemistry
The wire of flash bulb is made of:

Copper
Silver
Magnesium
Barium

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Chemistry
Heavy metals got their name because compared to other atoms they have

Higher atomic radii
Higher densities
Higher atomic masses
Higher atomic numbers

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Chemistry
Carbon footprint can be reduced by

All of these
Recycling waste materials
Commuting by public transport
Using energy efficient appliances

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MORE MCQ ON Chemistry

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