Chemistry Questions

Q:

Aluminium oxide is ___ in nature.

A) amphoteric B) acidic 
C) neutral D) basic
 
Answer & Explanation Answer: A) amphoteric

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Q:

The credit for classifying the elements on the basis of their atomic masses goes to

A) John Dalton B) John Alexander Reina Newlands
C) Dmitri Mendeleev D) Johann Wolfgang Dobereiner
 
Answer & Explanation Answer: C) Dmitri Mendeleev

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Q:

Which one of the following oxides of Nitrogen is also known as Laughing Gas?

A) NO2 B) N2O5
C) NO D) N2O
 
Answer & Explanation Answer: D) N2O

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Q:

If the first and third members of a Dobereiner triad are Phosphorous and Antimony, the second member of this triad is

A) Calcium B) Iodine
C) Arsenic D) Sulphur
 
Answer & Explanation Answer: C) Arsenic

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Q:

The pH of a solution, whose hydrogen ion concentration is 1 x 10 mole per litre, will be ____.

A) 7 B) 5
C) 4 D) 6
 
Answer & Explanation Answer: B) 5

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Q:

Which of the following metals is a liquid at room temperature?

A) Lithium B) Mercury
C) Sodium D) Calcium
 
Answer & Explanation Answer: C) Sodium

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Q:

What is the full form of PVC?

A) Phosphonil vinyl Carbonate B) Polyvinyl S Carbonate
C) Polyvinyl Carbonate D) Polyvinyl Chloride
 
Answer & Explanation Answer: D) Polyvinyl Chloride

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Q:

The process of reducing the milk fat globules size to allow them to stay evenly distributed in milk is called ____.

A) Standardization B) Pasteurization
C) Homogenization D) Fortification
 
Answer & Explanation Answer: C) Homogenization

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