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Chemistry

Chemistry
Chloroform can be used as

Analgesic
Antibiotic
Antimalarial
Anaesthetic

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Chemistry
Atomic number is the number equal to

None of these
Neutrons
Electrons
Protons

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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?

3 billion years
0.01 minute
100 years
13 days

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Chemistry
Diamonds are glittering and attractive because light incident on them undergoes

Multiple internal reflections
Hundred percent transmission
Multiple surface reflections
Highest refraction

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Chemistry
Hard water and soft water can be distinguished by using

Detergent
Liquid soap
Dilute acid
Ordinary soap

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Chemistry
The electronic configuration of an atom having atomic number ‘20’ is

2, 10, 8
2, 8, 8, 2
2, 6, 8, 4
2, 8, 10

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