General Science Chemistry Questions for SSC / UPSC Set 4

General Science  Chemistry Questions for SSC / UPSC MCQs Set 4 Questions And Answers for SSC-CGL, UPPSC, UPSC, NDA, CDS and UPSC Civil Services Prelims Online free practice Quiz  – General Studies

16 .The first organic compound synthesized in the laboratory was
A.  Urea
B.  Uric acid
C.  Lactic acid
D.  Glucose
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17 .Gas used for artificial ripening of fruits is:
A.  Ethane
B.  Acetylene
C.  Propane
D.  Methane
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18 .Chromatography technique is used for the separation of
A.  Small sample of mixture
B.  Plant pigments
C.  Dye stuff
D.  All
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19 .The gas produced in marshy places due to decomposition of vegetation is
A.  Carbon monoxide
B.  Carbon dioxide
C.  Sulphur dioxide
D.  Methane
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20 .Ethanol containing 5% water is known as-
A.  Absolute alcohol
B.  Dilute alcohol
C.  Power alcohol
D.  Rectified spirit
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21 .Chemical name of Gammaxane is:
A.  Aniline
B.  Toulene
C.  Benzene hexachloride
D.  Chloro benzene
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22 .Power alcohol is -
A.  Absolute alcohol + Methyle alcohol
B.  Absoluted alcohol + Petrol
C.  Rectified alcohol + Petrol
D.  Denatured alcohol + Petrol
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23 .What happens when a drop of glycerol is added to crush KMnO4 sprcad on a paper?
A.  There is a crackling sound
B.  There is no reaction
C.  The paper ignites
D.  There is a violent explosion
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24 .Which of the following is used as raw material for the manufacture of rayon?
A.  Coal
B.  Petroleum
C.  Cellulose
D.  Plastic
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25 .Lemon is sour due to-
A.  Citric acid
B.  Tartaric acid
C.  Oxalic acid
D.  Acetic acid
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