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Chemistry

Chemistry
The molecule which has the highest percentage of ionic character among the following is

HF
HI
HCI
HBr

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Chemistry
Which type of fire extinguisher is used for petroleum fire ?

None of these
Powder type
Soda acid type
Foam type

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Chemistry
Water gas is the combination of

CO and H2O
CO and H2
CO2 and CO
CO2and H2

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Chemistry
KMnO4 can be used as a/an

Disinfectant
Insecticide
Pesticide
Fertiliser

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Chemistry
When a bond is formed between two atoms, the energy of the system will

Increase
May increase or decrease
Decrease
Remain the same

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

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

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MORE MCQ ON Chemistry

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