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Chemistry

Chemistry
Mark the compound which possess ionic, covalent and coordinate bonds.

SO3
SO2
H2O
NH4Cl

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

50
314
138
88

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Chemistry
The atomic number of carbon is 6 and its atomic mass is 12. How many are there protons in the nucleus of carbon ?

Zero
12
18
6

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Chemistry
Which of the following is a method/process of disposing of solid waste which cannot be reused or recycled ?

All listed here
Landfills
Incineration
Pyrolysis and Gasification

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Chemistry
In deep-sea diving, divers use a mixture of gases consisting of oxygen and

Hydrogen
Argon
Nitrogen
Helium

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Chemistry
Glycol is added to aviation gasoline because it

Reduces consumption of petrol
Increases efficiency of petrol
Prevents freezing of petrol
Reduces evaporation of petrol

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