GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 107

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 107

1061). Which one of the following is correctly matched?
A). Liquid gold - Lead
B). Liquid Silver - Mercury
C). Aqua regia - Silver
D). Green Silver - Copper

Answer: Liquid Silver - Mercury

   
1062). Which one the following is correctly matched?
A). Charcoal - Inactive carbon
B). Diamond - Conductor
C). Graphite - Insulator
D). Fullerene - Soluble form of Carbon

Answer: Fullerene - Soluble form of Carbon


   
1063). Match List I with List II correctly and select your answer using the codes given below :
Codes :
List I                                                       List II
a) Lead tetraethyl                  1) Global warming
b) Liquid hydrogen                2) Ant knocking agent
c) Hydrogen peroxide            3) Rocket fuel
d) Carbon dioxide                 4) Bleaching agent

a b c d
A). 2 1 3 4
B). 1 3 2 4
C). 2 4 3 1
D). 2 3 4 1

Answer: 2 3 4 1

   
1064). Consider the following statements:
Assertion (A) : Silver article on exposure to air become black.
Reason (R): Silver is oxidised to silver oxide.
Now select your answer according to the coding scheme given below:
A). Both (A) and (R) are true and (R) is the correct explanation of (A)
B). Both (A) and (R) are true, but (R) is not the correct explanation of
C). (A) is true, but (R) is false
D). (A) is false, but (R) is true

Answer: (A) is false, but (R) is true

   
1065). The most acidic compound of the following is
A). methane
B). methyl alcohol
C). ethyl alcohol
D). phenol

Answer: phenol


1066). Consider the following statements:
Assertion (A): Bakelite is a thermosetting plastic.
Reason (R): Thermosetting plastics are those which change irreversibly into hard and rigid materials on heating.
Of these statements :
A). Both (A) and (R) are true and (R) is the correct explanation of (A)
B). Both (A) and (R) are true, but (R) is not the correct explanation of
C). (A) is true, but (R) is false
D). (A) is false, but (R) is true

Answer: Both (A) and (R) are true and (R) is the correct explanation of (A)


   
1067). Diamond and graphite are
A). isomers
B). isotopes
C). allotropes
D). polymers

Answer: allotropes


   
1068). Activated charcoal is used to remove colouring matter from impure substances. It works by
A). oxidation
B). reduction
C). adsorption
D). bleaching

Answer: adsorption


   
1069). Bordeaux mixture is a mixture of
A). copper sulphate and lime
B). bleaching powder and DDT
C). DDT and BHC
D). DDT and Parathion

Answer: copper sulphate and lime


   
1070). Aluminium ore is known as
A). Lignite
B). Bauxite
C). Anthracite
D). Pyrite

Answer: Bauxite