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1
JEE Main 2019 (Online) 11th January Morning Slot
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An example of solid sol is :
A
Butter
B
Hair cream
C
Gem stones
D
Paint
2
JEE Main 2019 (Online) 10th January Evening Slot
MCQ (Single Correct Answer)
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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
3
JEE Main 2019 (Online) 10th January Morning Slot
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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
4
JEE Main 2019 (Online) 9th January Evening Slot
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For coagulation of arsenious sulphate sol, which one of the following salt solution will be most effective ?
A
BaCl2
B
AlCl3
C
NaCl
D
Na3PO4
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