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Chemistry mcq questions and answers for competitive exams

Ramya_naidu

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Chemistry mcq questions and answers for competitive exams UPSC SSC , SSC CGL, SSC CHSL, upsc Civils , Entrance exams Online test practice online free Quiz, mock practice online
46.
The acid generally stored in batteries is

a
Acetic Acid
b
Nitric Acid
c
Sulphuric Acid
d
Hydrochloric Acid
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47.
The gas used for artificial ripening of green fruit is?

a
ethane
b
ethylene
c
acetylene
d
carbon dioxide
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48.
Acids taste

a
Sour
b
Sweet
c
May be both
d
None of both
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49.
The luster of a metal is due to

a
its high density
b
its high polishing
c
its chemical inertness
d
presence of free electrons
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50.
Which have maximum number of isotopes?

a
Carbon
b
Bromine
c
Polonium
d
Aluminium
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51.
The aqueous solution of which acids is called Vinegar?

a
Acetic acid
b
Citric acid
c
Oxalic acid
d
Hydrochloric acid
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52.
The luster of a metal is due to :

a
high density
b
high polishing
c
chemical inertness
d
presence of free electrons
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53.
Which one of the following gas is readily soluble in water at room temperature?

a
chlorine
b
nitrogen
c
ammonia
d
carbon dioxide
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54.
The molecule which has the highest percentage of ionic character among the following is

a
HF
b
HI
c
HBr
d
HCI
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55.
The cyclotron is used to

a
making alloys
b
purifying metals
c
separating elements
d
accelerating particles
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56.
Identify the wrong statement in the following

a
Amongst isoelectronic species, greater the negative charge on the anion, larger is the ionic radius
b
Amongst isoelectronic species, smaller the positive charge on the cation, smaller is the ionic radius
c
Atomic radius of the elements increases as one moves down the first group of the periodic table
d
Atomic radius of the elements decreases as one moves across from left to right in the 2nd period
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57.
What among following is used to produce artificial rain?

a
silver iodide
b
copper oxide
c
silver nitrate
d
carbon monoxide
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58.
Who is regarded as father of modern chemistry?

a
Einstein
b
Lavoisier
c
Ruterford
d
V. Raman
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59.
The human body is made up of several chemical elements; the element present in the highest proportion (65 %) in the body is

a
oxygen
b
carbon
c
nitrogen
d
hydrogen
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60.
Which gas is used in fire extinguishers?

a
Nitrogen oxide
b
Carbon dioxide
c
Sulpher dioxide
d
Carbon monoxide
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