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1
JEE Main 2019 (Online) 11th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Among the colloids cheese (C), milk (M), and smoke (S), the correct combination of the dispersed phase and dispersion medium, respectively is :
A
C : liquid in solid ; M : liquid in liquid ; S : solid in gas
B
C : liquid in solid ; M : liquid in solid ; S : solid in gas
C
C : solid in liquid ; M : liquid in liquid ; S : gas in solid
D
C : solid in liqid ; M : solid in liquid ; S : solid in gas
2
JEE Main 2019 (Online) 11th January Morning Slot
MCQ (Single Correct Answer)
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-1
Out of Syllabus
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An example of solid sol is :
A
Butter
B
Hair cream
C
Gem stones
D
Paint
3
JEE Main 2019 (Online) 10th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Haemoglobin and gold sol are examples of :
A
positively charged sols
B
negatively charged sols
C
Positively and negatively charged sols, respectively
D
negatively and positively charged sols, respectively
4
JEE Main 2019 (Online) 10th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Which of the following is not an example of heterogenous catalytic reaction?
A
Ostwald's process
B
Combustion of coal
C
Hydrogenation of vegetable oils
D
Haber's process
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