Physics Class 11&12 questions pinned «Which of the following is a semiconductor?»
Which law states equal volumes of gases at equal T and P have the same number of molecules?
Anonymous Quiz
19%
A) Boyle’s Law
20%
B) Dalton’s Law
49%
C) Avogadro’s Law
13%
D) Charles’ Law
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Avogadro’s number is:
Anonymous Quiz
12%
A) 6.02 × 10²²
75%
B) 6.02 × 10²³
9%
C) 3.14 × 10⁻²³
4%
D) 1.38 × 10⁻²³
Boyle’s Law is valid at:
Anonymous Quiz
30%
A) High pressure, low temperature
36%
B) Low pressure, high temperature
27%
C) All conditions
7%
D) Very high temperature only
Dalton’s law is valid for:
Anonymous Quiz
24%
A) Reactive gases
31%
B) Non-reactive ideal gases
35%
C) Only diatomic gases
10%
D) Solids
Kinetic energy of a gas is directly proportional to:
Anonymous Quiz
14%
A) Volume
22%
B) Pressure
52%
C) Temperature
12%
D) Density
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The value of gas constant R is:
Anonymous Quiz
10%
A) 1.38 × 10⁻²³ J/K
66%
B) 8.314 J/mol·K
19%
C) 6.02 × 10²³
5%
D) 273 K
The mean free path depends on:
Anonymous Quiz
21%
A) Volume and T
15%
B) Container size
58%
C) Molecular size and number density
6%
D) Molar mass
Instrument to visualize atoms:
Anonymous Quiz
25%
A) Compound microscope
25%
B) X-ray machine
45%
C) Scanning tunnelling microscope
5%
D) Thermometer
Mean kinetic energy of a molecule is proportional to:
Anonymous Quiz
12%
A) Pressure
19%
B) Volume
50%
C) Temperature
19%
D) Number of moles
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Pressure in kinetic theory is due to:
Anonymous Quiz
9%
A) Atom weight
35%
B) Intermolecular forces
44%
C) Molecular collisions with walls
11%
D) Gas flow
Which gas law states that V ∝ T at constant pressure?
Anonymous Quiz
29%
A) Boyle’s law
21%
B) Avogadro’s law
45%
C) Charles’ law
5%
D) Dalton’s law
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Which variable is held constant in Boyle’s law?
Anonymous Quiz
16%
A) Volume
49%
B) Temperature
29%
C) Pressure
5%
D) Mass
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When a gas expands adiabatically, its temperature:
Anonymous Quiz
46%
A) Increases
25%
B) Decreases
26%
C) Remains constant
3%
D) Becomes infinite
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The pressure exerted by one mole of gas in a container is inversely proportional to:
Anonymous Quiz
44%
A) Volume
25%
B) Temperature
25%
C) Number of molecules
6%
D) Mass
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What does the area under a PV graph represent?
Anonymous Quiz
32%
A) Temperature
42%
B) Work done
18%
C) Internal energy
8%
D) Entropy
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Which of the following gas molecule has the highest vrms at the same T?
Anonymous Quiz
25%
A) Oxygen
47%
B) Hydrogen
21%
C) Argon
7%
D) Neon
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What is the molar volume of gas at STP?
Anonymous Quiz
38%
A) 22.4 mL
11%
B) 224 L
47%
C) 22.4 L
4%
D) 2.24
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