GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 097

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 097

961). Which of the following is used as a preservative of food articles?
A). Sodium bicarbonate
B). Sodium benzoate
C). Sodium carbonate
D). Sodium chloride

Answer: Sodium benzoate


   
962). The gas that should not be used for extinguishing fire is
A). O2
B). H2
C). N2
D). CO2

Answer: O2



   
963). The two elements showing diagonal relationship are
I. Berlium 

II. Sodium 

III. Aluminium 

lV. Magnesium
The correct answer is
A). I and IV
B). I and III
C). II and III
D). I and II

Answer: I and III


   
964). Which gas leaked in Bhopal tragedy?
A). Carbon monoxide
B). Sulphur dioxide
C). Methyl iso-cyanide
D). Mercaptan

Answer: Methyl iso-cyanide

   
965). The important substance used in Vulcanisntion of rubber is
A). carbon
B). phosphorous
C). silicon
D). sulphur

Answer: sulphur


966). In oxidation reactions
I. valency is increased
ll. electron is added
III. electron is removed
IV. hydrogen is added
The correct answer is
A). I and II
B). I and III
C). I and IV
D). III ad IV

Answer: I and III


   
967). Gun metal is an alloy of
A). Cu and Sn
B). Cu, Zn and Ni
C). Cu, Zn and Sn
D). Cu and Al

Answer: Cu, Zn and Sn


   
968). The chemical name of Calomel is
A). Calcium chloride
B). Mercuric chloride
C). Mercurous chloride
D). Aluminium chloride

Answer: Mercurous chloride

   
969). Oil of vitriol is
A). Sulphuric acid
B). Methyl Salicylate
C). Nitrobenzene
D). Hydrofluoric acid

Answer: Sulphuric acid


   
970). Which is the following is an ester?
A). Coconut oil
B). Kerosene oil
C). Glycerine
D). Xylene

Answer: Coconut oil