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Chemistry

Chemistry
The deterioration of a metal by an electrochemical process is commonly termed as

Abrasion
Passivation
Corrosion
Erosion

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Chemistry
Type metal used in printing press is an alloy of

Lead and zinc
Lead and copper
Lead and bismuth
Lead and antimony

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Chemistry
Which of the following is used as anesthetic ?

NO
NO2
NH3
N2O

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Chemistry
Which one is the most reactive gaseous element

Bromine
Chlorine
Flourine
Iodine

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Chemistry
The inexpensive and commonly used variety of glass is called soda glass.

is made using soda(sodium carbonate)
was initially used for storing sodium carbonate
is made using soda lime
was used initially for making bottles of soda(carbonated drink)

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Chemistry
The most abundant constituent of atmospheric air is :

Oxygen
Hydrogen
Carbon
Nitrogen

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