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General Science MCQ - Multiple Choice Question and Answer

General Science MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 1
The chemial name of Uria is

Carbamide
Chloroetane
Aneurin
None of these

Question No : 2
Earth's seasons are caused by which of the following?

The varying amount of sunspot activity
The tilt of the earth's rotation relative to the ecliptic as earth revolves around the sun
The earth's orbit around the sun as an exlipse rather than a circle
The rotation of during a 24-hour day

Question No : 3
Which of the following parts of the sun is easily visible only during a total solar eclipse?

core
photosphere
sunspots
corona

Question No : 4
Permanent hardness of water can be removed by adding

Potassium Permanganate
Bleaching Powder
Chlorine
Washing Soda

Question No : 5
According to Daltons atomic theory the smallest particle which can exist independently is

An atom
A cation
A molecule
An anion

Question No : 6
Brass gets discoloured in air due to the presence of which gas in air

Carbon dioxide
Hydrogen Sulphide
Oxygen
Nitrogen

Question No : 7
The most important ore of Aluminium is

Calamine
Calcite
Galena
Bauxite