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Home
Questions & Answer
Science Questions & Answers
Chemistry Questions & Answers
Chemistry Questions & Answers
(Compiled from UPSC, SSC ,PSC ,IBPS previous question papers)
The aqueous solution of which among the following acids is called Vinegar?
A
Hydrochloric acid
B
Acetic acid
C
Citric acid
D
Oxalic acid
Which among the following is the correct decreasing of bioelements in Human Body?
A
carbon, oxygen, hydrogen, nitrogen, calcium, and phosphorus
B
oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus
C
oxygen, carbon, nitrogen, hydrogen, calcium, and phosphorus
D
oxygen, hydrogen, Carbon, nitrogen, calcium, and phosphorus
Which among the following happens in an oxidation reaction ?
A
Protons are lost
B
Protons are gained
C
Electrons are lost
D
Electrons are gained
Identify the thermosetting plastic from the given options:
A
Casseine
B
Polyvincychloride
C
Bakelite
D
Polythene
White Phosphorous is represented by which among the following symbols?
A
P4
B
P3
C
P2
D
P1
Which among the following is called Laughing Gas popularly?
A
Nitric oxide
B
Nitrous oxide
C
Nitrogen penta oxide
D
Nitrogen
Identify the non-metallic mineral from the given options:
A
Manganese
B
Magnesium
C
Silica
D
Bauxite
The aqueous solution of which acids is called Vinegar ?
A
Acetic acid
B
Hydrochloric acid
C
Citric acid
D
Oxalic acid
Which have maximum number of isotopes ?
A
Bromine
B
Aluminium
C
Polonium
D
Carbon
What is used to avoid melting of ice ?
A
Gelatine
B
Butane
C
Methane
D
Any acid
Oxides of metals are alkaline.
A
TRUE
B
FALSE
What is metallurgy ?
A
process of extracting metal in pure form from its ore.
B
process of creating alloys of metals.
C
process of making metals live long.
D
None of above.
Acids taste
A
Sour
B
Sweet
C
May be both
D
None of both
Acid rain is due to air pollution by ?
A
Carbon dioxide
B
Carbon monoxide
C
Methane
D
Nitrous oxide and Sulphur dioxide
The major component used in preparation of different types of glasses is :
A
Sodium borate
B
Sodium silicate
C
Silica
D
Calcium silicate
How many different oxides are formed by nitrogen ?
A
two
B
three
C
four
D
five
The single acid which dissolves gold is ?
A
Aqua regia
B
Hydrochloric acid
C
Nitric acid
D
Selenic acid
Which gas is filled in refrigerators ?
A
Chlorofluorocarbon
B
Acetylene
C
Methane
D
Butane
Contact lenses are made from ?
A
Polyvinyl chloride
B
Teflon
C
Polystyrene
D
Lucite
Brass is an alloy of ?
A
Copper and Tin
B
Copper and Zinc
C
Copper and Aluminium
D
Iron and Copper
What is extracted from Bauxite ?
A
Mica
B
Aluminium
C
Copper
D
Tin
Why is phosphorus kept under water ?
A
to make it wet
B
to make it durable
C
water forms a protective coating on it
D
to save it from catching fire when exposed to dry air
What is the chemical name of table salt ?
A
Sodium nitrate
B
Ammonium chloride
C
Sodium chloride
D
Calcium chloride
Which of the following elements behave chemically both as a metal and a non metal?
A
Boron
B
Carbon
C
Argon
D
Mercury
Which of the following gases is the most toxic?
A
Carbon dioxide
B
Sulphur dioxide
C
Carbon monoxide
D
Acetic acid
The substance that contains the maximum amount of nitrogen is ?
A
Ammonium Sulphate
B
Urea
C
Ammonium Nitrate
D
Ammonium Chloride
The cyclotron is used to
A
accelerating particles
B
separating elements
C
purifying metals
D
making alloys
The ejection of electrons when a metal surface is irradiated is known as
A
Black body radiation
B
Photoelectric effect
C
Zeeman effect
D
Atomic spectrum
Sugars are converted in the liver into
A
Glycogen
B
Vitamin
C
Monosaccharide
D
None of above
The acid generally stored in batteries is
A
Nitric Acid
B
Hydrochloric Acid
C
Sulphuric Acid
D
Acetic Acid
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