Topic: States of Matter - Gases and Liquids, Test No.: 04, Total MCQs: 10
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Question 1 |
The most
probable velocity of a gas molecule at 298 K is m/s 300 m/s. Its RMS. Velocity
in m. s–1 is
420 | |
245 | |
402 | |
367 |
Question 2 |
The RMS
velocity of an ideal gas at 300K is 12240 cm.sec–1. What is its most
probable velocity (in.cm.sec-1) at the same temperature?
10000 | |
11280 | |
1000 | |
12240 |
Question 3 |
The total
pressure of a mixture of 6.4 grams of oxygen and 5.6 grams of nitrogen present
in a 2 litre vessel is 1200 mm. What is the partial pressure (in mm) of
nitrogen?
1200 | |
600 | |
900 | |
200 |
Question 4 |
Temperature
below which, the gas does not obey ideal gas laws is called
Boyle's temperature | |
inversion temperature | |
reduced temperature | |
critical temperature |
Question 5 |
The density
of an ideal gas is 0.03 g.cm−1. Its pressure is 106
g.cm−1.sec−2. What is its RMS velocity (in cm
sec–1)
103 | |
3 ×104 | |
108 | |
104 |
Question 6 |
The density
of O2 is 16 at NTP. At what temperature its density will be 14?
Consider that the pressure remain the constant, at
50°C | |
39°C | |
57°C | |
43°C |
Question 7 |
The kinetic
energy of 4 moles of nitrogen gas at 127°C is _____ cals.
(R = 2cal.mole−1.K−1 )
(R = 2cal.mole−1.K−1 )
4400 | |
3200 | |
4800 | |
1524 |
Question 8 |
The maximum number of molecules is present in:
5L of N2 gas at STP | |
0.5 g of H2 gas | |
10g of O2 gas | |
15 L of H2 gas at STP |
Question 9 |
The molecular velocity of any gas is
Directly proportional to square root of temperature | |
Inversely proportional to the square root of temperature | |
Inversely proportional to absolute temperature | |
Directly proportional to square of temperature |
Question 10 |
The most
probable velocity (in cm/s) of hydrogen molecule at 27°C, will be
19.3 × 104 | |
17.8 × 104 | |
24.93 × 109 | |
17.8 × 108 |
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