1
JEE Main 2019 (Online) 9th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
0.5 moles of gas A and x moles of gas B exert a pressure of 200 Pa in a container of volume 10 m3 at 1000 K. Given R is the gas constant in JK$$-$$1mol$$-$$1, x is :
A
$${{2R} \over {4 + R}}$$
B
$${{2R} \over {4 - R}}$$
C
$${{4 + R} \over {2R}}$$
D
$${{4 - R} \over {2R}}$$
2
JEE Main 2019 (Online) 9th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The one that is extensively used as a piezoelectric material is :
A
tridymite
B
amorphous silica
C
quartz
D
mica
3
JEE Main 2019 (Online) 9th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Consider the reversible isothermal expansion of an ideal gas in a closed system at two different temperatures T1 and T2 (T1 < T2). The correct graphical depiction of the dependence of work done (w) on the final volume (V) is :
A
JEE Main 2019 (Online) 9th January Morning Slot Chemistry - Thermodynamics Question 118 English Option 1
B
JEE Main 2019 (Online) 9th January Morning Slot Chemistry - Thermodynamics Question 118 English Option 2
C
JEE Main 2019 (Online) 9th January Morning Slot Chemistry - Thermodynamics Question 118 English Option 3
D
JEE Main 2019 (Online) 9th January Morning Slot Chemistry - Thermodynamics Question 118 English Option 4
4
JEE Main 2019 (Online) 9th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Adsorption of a gas follows Freundlich adsorption isotherm. In the given plot, x is the mass of the gas adsorbed on mass m of the adsorbent at pressure P. $${x \over m}$$ is proportional to :

JEE Main 2019 (Online) 9th January Morning Slot Chemistry - Surface Chemistry Question 93 English
A
P2
B
P$${^{{1 \over 4}}}$$
C
P$${^{{1 \over 2}}}$$
D
P
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