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Chemistry

Chemistry
The acid present in red ants is

Butyric acid
Formic acid
Caproic acid
Acetic acid

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Chemistry
An electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a :

Uninterrupted power supply (UPS)
Battery
Generator
Power transmittor

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Chemistry
Which one is the most dense liquid from the below

Water
None of these
Gasolin
Choloform

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Chemistry
Magnetite is

Fe3O4
FeCO3
2Fe2O3. 3H2O
Fe2O3

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Chemistry
The quality of petrol is expressed in terms of

Octane number
Cetane number
Gold number
Added unlead compounds

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Chemistry
High concentration hydrocarbon pollutants in atmospheric air causes

Reduced crop yield
Respiratory diseases (e.g.asthma)
Silicosis
Cancer

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MORE MCQ ON Chemistry

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