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Chemistry

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

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

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Chemistry
Glycol is added to aviation gasoline because it

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

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Chemistry
The 'solid waste' is also known as

Toxic waste
Sludge
Sedge
Scrubber

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Chemistry
In a period from Li to F, ionisation potential

Cannot be predicted
Decreases
Increases
Remains same

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Chemistry
Which one of the following metals does not react with water to produce Hydrogen ?

Sodium
Potassium
Lithium
Cadmium

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Chemistry
Bee sting contains

An alkaline liquid
An acidic liquid
A corrosive liquid
A salt solution

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