1
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

Three vessels of equal capacity have gases at the same temperature and pressure. The first vessel contains helium (monoatomic), the second contains fluorine (diatomic) and the third contains sulfur hexafluoride (polyatomic). The correct statement, among the following is :

A
The root mean square speed of sulfur hexafluoride is the largest
B
All vessels contain unequal number of respective molecules
C
The root mean square speed of molecules is same in all three cases
D
The root mean square speed of helium is the largest
2
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

An ideal gas undergoes four different processes from the same initial state as shown in the figure below. Those processes are adiabatic, isothermal, isobaric and isochoric. The curve which represents the adiabatic process among 1, 2, 3 and 4 is

NEET 2022 Phase 1 Physics - Heat and Thermodynamics Question 14 English

A
1
B
2
C
3
D
4
3
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

The volume occupied by the molecules contained in 4.5 kg water at STP, if the intermolecular forces vanish away is

A
5.6 $$\times$$ 106 m3
B
5.6 $$\times$$ 103 m3
C
5.6 $$\times$$ 10$$-$$3 m3
D
5.6 m3
4
NEET 2021
MCQ (Single Correct Answer)
+4
-1
A cup of coffee cools from 90$$^\circ$$C to 80$$^\circ$$C in t minutes, when the room temperature is 20$$^\circ$$C. The time taken by a similar cup of coffee to cool from 80$$^\circ$$C to 60$$^\circ$$C at a room temperature same at 20$$^\circ$$C is :
A
$${5 \over {13}}$$t
B
$${13 \over {10}}$$t
C
$${13 \over {5}}$$t
D
$${10 \over {13}}$$t
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