Chemistry Objective GK Mock Test – 5

A quick 25 questions article on Chemistry – General Knowledge – MCQs important for competitive exams like in UPSC, state civil services, olympiads etc.

Other similar articles: Test – 1 | Test – 2 | Test – 3 | Test – 4 | Test – 5 | Test – 6 | Test – 7 | Test – 8 | 75 One Liners.

Questions Section

Que (1):
Mixture of which pair of gases is the cause of occurrence of most of the explosions in mines?
A. Methane and air
B. Methane and carbon
C. Carbon and air
D. Nitrogen and onxygen
Answer

Methane and air
nan

Que (2):
What is a strong argument for the particle nature of cathode rays?
A. They are cast shadow
B. They disintegrate
C. They disintegrate light
D. The seperate the white light
Answer

They are cast shadow
nan

Que (3):
What is the poison of honey bee?
A. Acidic
B. Basic
C. Neutral
D. none of these
Answer

Acidic
nan

Que (4):
Which inorganic precipitate acts as semi-permeable membrane?
A. Copper ferrocyonide
B. Antimony hydride
C. Antimony pentafluoride
D. Trisulfide
Answer

Copper ferrocyonide
nan

Que (5):
What is the number of electrons in an atom of atomic number Z and mass number A?
A. Z
B. A
C. X
D. B
Answer

Z
nan

Que (6):
To prepare a standard solution of a substance, what is generally used ?
A. Beaker
B. Test tube
C. Measuring flask
D. none of these
Answer

Measuring flask
nan

Que (7):
In methane molecule how are the four hydrogen atoms arranged?
A. As pentahedral
B. As octahedral
C. As tetrahedral
D. all of these
Answer

As tetrahedral
nan

Que (8):
Which variety of glass is heat resistant?
A. Laminated glass
B. PVB
C. Fire resistant glass
D. Pyrex
Answer

Pyrex glass
nan

Que (9):
What are Rubies and Sapphires chemically known as?
A. Aluminium hydroxide
B. Aluminium oxide
C. Magnesium Oxide
D. Magnesium hydroxide
Answer

Aluminium oxide
nan

Que (10):
Which pair of metals constitutes the lightest metal and the heaviest metal, respectively?
A. Nickel and Titanium
B. Mercury and Tin
C. Lead and Tin
D. Lithium and osmium
Answer

Lithium and osmium
nan

Que (11):
Which element has the lowest electron affinity?
A. Helium
B. Argon
C. Krypton
D. Xenon
Answer

Argon
nan

Que (12):
By whom was the calculation of electronegativities first done?
A. Gauss
B. Pauling
C. Euler
D. Turning
Answer

Pauling
nan

Que (13):
What does the emission of ß-particle?
A. Increases the atomic number by one
B. Increases the atomic number by two
C. Decreases the atomic number by one
D. Decreases the atomic number by Two
Answer

Increases the atomic number by one
nan

Que (14):
A fruity smell is obtained by the reaction of ethanol with which compound?
A. CH3COH
B. CH3COOH
C. CH2COOH
D. CH2COH
Answer

CH3COOH
nan

Que (15):
Which compound caused tragedy of Bhopal in 1984?
A. Ethyl Isocynite
B. Ethyl Isocynate
C. Methyl Isocynite
D. Methyl isocynate
Answer

Methyl isocynate
nan

Que (16):
Which compound is used as an antichlor?
A. Na2S2O3
B. Na3S2O3
C. Na2S2O2
D. Na2S3O3
Answer

Na2S2O3
nan

Que (17):
Which chemical used as a ‘fixer’ in photography?
A. Sodium thiosulphate
B. Magnesium thiosulphate
C. Ferrous thiosulphate
D. nan
Answer

Sodium thiosulphate
nan

Que (18):
Which metal has the highest density?
A. Gold
B. Iron
C. Zinc
D. Platinum
Answer

Platinum
nan

Que (19):
What does Soda water contain?
A. Nitrogen
B. Oxygen
C. Carbon dioxide
D. Suphur
Answer

Carbon dioxide
nan

Que (20):
Which major component is used in preparation of different types of glasses?
A. Silica
B. Silicone
C. Tin
D. Copper
Answer

Silica
nan

Que (21):
What is the main constituent of vinegar?
A. Citrus acid
B. Acetic acid
C. Carbonic acid
D. Oxalic acid
Answer

Acetic acid
nan

Que (22):
Which compound is used for writing on glass?
A. Hydrogen chloride
B. Hydrogen flouride
C. Hydrogen bromide
D. Hydrogen iodide
Answer

Hydrogen fluoride
nan

Que (23):
Which compound is commonly used as antifreeze in automobile radiators?
A. Pertrol
B. Greeze
C. Oil
D. Glycerol
Answer

Glycerol
nan

Que (24):
When water vapours are passed over aluminium carbide, what do we get?
A. Ethane
B. Methane
C. Propane
D. Butane
Answer

Methane
nan

Que (25):
Which metal was first discovered by man ?
A. Iron
B. Copper
C. Silver
D. Gold
Answer

Copper
nan

Other relevant links:

• Chemistry Objective GK Mock Test – 1
• Chemistry Objective GK Mock Test – 2
• Chemistry Objective GK Mock Test – 3

Conclusion:

Hope this article has provided you with some relevant knowledge for your exams. Do let us know in comments if this article is of help or if you want us to cover some other topic.

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