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 Chemistry Questions

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Q:

The percentage of nitrogen in the air is about

A) 74% B) 76%
C) 78% D) 80%
 
Answer & Explanation Answer: C) 78%

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Q:

Zeolite is

A) hydrated ferric oxide B)  hydrated sodium aluminium silicate
C)  sodium hexameta phosphate D)  sodium tetra borate
 
Answer & Explanation Answer: B)  hydrated sodium aluminium silicate

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Q:

Methane an air pollutant is produced ______.

A) by action of ultraviolet light on nitrogenous compounds. B) as a by-product of manufacturing ammoniacal fertilizers
C) by burning of coal in insufficient air D) by digestion of food by animals
 
Answer & Explanation Answer: D) by digestion of food by animals

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Q:

Terylene is a condensation polymer of ethylene glycol and which acid?

A) Benzoic Acid B) Salicylic acid
C) Phthalic acid D) Terephthalic acid
 
Answer & Explanation Answer: D) Terephthalic acid

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Q:

Carnotite is an ore/mineral of _____.

A) Beryllium B) Chromium
C) Uranium D) Copper
 
Answer & Explanation Answer: C) Uranium

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Q:

Which of the following is used in gunpowder?

A) Potassium bromide B) Potassium nitrate
C) Monopotassium tartarate D) Potassium sulphate
 
Answer & Explanation Answer: B) Potassium nitrate

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Q:

Haemoglobin has the highest affinity with which of the following?

A) SO2 B) CO2
C) CO D) NO2
 
Answer & Explanation Answer: C) CO

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Q:

Atomic number of which of the following elements is greater than that of Aluminium?

A) Phosphorus B) Neon
C) Magnesium D) Sodium
 
Answer & Explanation Answer: A) Phosphorus

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