GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 108

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 108

1071). Consider the following statements:
i) Graphite is an allotrope of carbon
ii) Diamond is a metal
iii) Graphite is a non-conductor of electricity
iv) Diamond is the hardest naturally occurring substance .
Of these Statements :
A). (i) and (iv) are correct
B). (i) alone is correct
C). (i), (ii) and (iii) are correct
D). all are correct

Answer: (i) and (iv) are correct

   
1072). Which one of the following is correctly matched?
A). Iron-Bones
B). Cobalt-Vitamin B12
C). Calcium-Semiconductor
D). Silicon-Haemoglobin

Answer: B) Cobalt-Vitamin B12



   
1073). Match List I with List I! correctly and select your answer using the codes given below :
List-l                                                      List II
a) Blood clotting                         1) Insulin
b) Blood sugar level                    2) Vitamin K
c) Source of energy                    3) Carbohydrates
d) Vinegar                                 4) Acetic acid

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

Answer: 2 1 3 4


   
1074). The substance that is not colloidal in nature is
A). blood
B). milk
C). smoke
D). sea water

Answer: sea water


   
1075). The percentage of gold in 18 carat is
A). 50
B). 75
C). 60
D). 80

Answer: 60



1076). The pH of blood is
A). 2.4 - 3.4
B). 4.0 - 4.4
C). 4.5 - 5.5
D). 7.3 - 7.5

Answer: 7.3 - 7.5


   
1077). Global warming is caused by
A). lead
B). carbon monoxide
C). particulate matter
D). nitrogen oxides

Answer: carbon monoxide


   
1078). The chemical behaviour of an element is due to
A). protons
B). neutrons
C). electrons
D). outermost electrons

Answer: outermost electrons


   
1079). The metal that exhibits allotropy is
A). gold
B). silver
C). copper
D). tin

Answer: tin


   
1080). Which one of the following is a metalloid?
A). Antimony
B). Mercury .
C). Magnesium
D). Argon

Answer: Antimony