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1
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Which one is an example of heterogenous catalysis?

A
Hydrolysis of sugar catalysed by $$\mathrm{H}^{+}$$ ions.
B
Decomposition of ozone is presence of nitrogen monoxide.
C
Combination between dinitrogen and dihydrogen to form ammonia in the presence of finely divided iron.
D
Oxidation of sulphur dioxide into sulphur trioxide in the presence of oxides of nitrogen.
2
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Pumice stone is an example of -

A
gel
B
solid sol
C
foam
D
sol
3
NEET 2022 Phase 2
MCQ (Single Correct Answer)
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Shown below are adsorption isotherms for a gas 'X' at temperatures T1, T2 and T3 :

NEET 2022 Phase 2 Chemistry - Surface Chemistry Question 4 English

p and $${x \over m}$$ represent pressure and extent of adsorption, respectively. The correct order of temperatures for the given adsorption is :

A
$${T_1} = {T_2} > {T_3}$$
B
$${T_1} > {T_2} > {T_3}$$
C
$${T_3} > {T_2} > {T_1}$$
D
$${T_1} = {T_2} = {T_3}$$
4
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus

Given below ae two statements

Statement I:

In the coagulation of a negative sol, the flocculating power of the three given ions is in the order Al3+ > Ba2+ > Na+

Statement II:

In the coagulation of a positive sol, the flocculating power of the three given salts is in the order NaCl > Na2SO4 > Na3PO4

In the light of the above statements, choose the most appropriate answer from the options given below

A
Both Statement I and Statement II are correct.
B
Both Statement I and Statement II are incorrect.
C
Statement I is correct but Statement II is incorrect.
D
Statement I is incorrect but Statement II is correct.
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