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Chemistry

Chemistry
The number of neutrons present in an element having mass number 226 and atomic number 88 is :

50
88
138
314

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Chemistry
Which one is the simplest form of alkane

Decane
Butane
Propane
Methane

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Chemistry
Chloroform can be used as

Antibiotic
Analgesic
Antimalarial
Anaesthetic

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Chemistry
Which of the following has no unit

Electron affinity
Electronegativity
Excitation potential
Ionization energy

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Chemistry
Hardest allotrope of carbon is

Lamp black
Graphite
Diamond
Coke

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Chemistry
The pollutant responsible for ozone holes is ________

CO
CO2
CFC
SO2

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