1
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Identify physisorption from following.

A
$$\mathrm{O}_2$$ gas deposited on tungsten
B
$$\mathrm{H}_2$$ gas deposited on nickel
C
$$\mathrm{N}_2$$ gas deposited on iron
D
All gases deposited on charcoal
2
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Identify the catalyst (A) used in following reaction.

$$\mathrm{CO}+\mathrm{H}_2 \mathrm{O} \stackrel{\mathrm{A}}{\rightleftharpoons} \mathrm{CO}_2+\mathrm{H}_2$$

A
Platinised asbestos
B
$$\mathrm{MnO}_2$$
C
Co-Th alloy
D
$$\mathrm{Fe}-\mathrm{Cr}$$
3
MHT CET 2023 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the last step in wet chemical synthesis of nanomaterial.

A
Formation of oxide or alcohol-bridged network
B
Dehydration
C
Aging of the gel
D
Drying of the gel
4
MHT CET 2023 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following is character of lyophilic colloid?

A
Particles of dispersed phase have no affinity for dispersion medium.
B
Particles easily detected under ultramicroscope.
C
Addition of large amount of electrolyte causes precipitation.
D
These are irreversible colloids.
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