1
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Fluoride toothpaste is sometimes recommended, because fluoride
A
prevents plaque formation
B
hardens the enamel of the tooth
C
kills pathogenic bacteria
D
prevents toothache
2
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Combination of one volume of nitrogen with three volumes of hydrogen produces
A
one volume of ammonia
B
two volumes of ammonia
C
three volumes of ammonia
D
one and a half volumes of ammonia
3
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
The setting time of cement is lowered by adding
A
oxides of aluminium
B
gypsum
C
oxides of magnesium
D
silica
4
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Emulsion is known as a
A
colloidal solution of substances having different physical states
B
true solution
C
distillation mixture for making alcohols
D
colloidal solution of two liquids
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