Solid Liquid and Gases Class 5. We covered all the Solid Liquid and Gases Class 5 in this post for free so that you can practice well for the exam.
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MCQ on Solid Liquid and Gases for NEET Students
A sample of an ideal gas has a volume of 400 L when its temperature is 20 °C and its pressure is 300 mm Hg. What volume will the gas occupy at STP?
(A) 111L
(B) 147 L
(C) 294 L
(D) 169 L
Option b – 147 L
Which of the following changes will decrease the vapor pressure of water kept in a sealed vessel? i. Decreasing the quantity of water ii. Adding salt to water Decreasing the temperature of the water
(A) (i), (ii)
(B) (ii), (iii)
(C) (i), (iii)
(D) (i), (ii), (iii)
Option b – (ii), (iii)
If 1 gram of each of the following gases is taken at STP, which of the gases will occupy the smallest volume? consider ideal behavior
(A) 0₂
(B) CO
(C) CH4
(D) CO₂
Option d – CO₂
An ideal gas occupies a volume of 5.0 L at 1.0 atm and 400 K. If the temperature is increased by 100 K, keeping the pressure constant, then the volume will be ………
(A) 1.25 L
(B) 4.00 L
(C) 4.75 L
(D) 6.25 L
Option d – 6.25 L
The volume of I mole of an ideal gas is 89.65 L at ………
(A) 100 °C and I atm
(B) 100 °C and 0.5 atm
(C) 0 °C and 0.5 atm
(D) 0 °C and 0.25 atm
Option d – 0 °C and 0.25 atm
P, Q, R, and S are four different gases with temperatures 304.1, 154.3, 405.5, and critical 126.0 K respectively. While cooling, the gas which gets liquefied first is ……….
(A) P
(B) Q
(C) R
(D) S
Option c – R
Which of the following is INCORRECT?
(A) London forces: Interaction energy is inversely proportional to the sixth power of the distance between the two interacting particles.
(B) Dipole-dipole forces: Interaction energy is inversely proportional to the cube of the distance between the two stationary polar molecules.
(C) Dipole-dipole forces: Interaction energy is inversely proportional to the sixth power of the distance between the two rotating polar molecules.
(D) Dipole-induced dipole forces: Interaction energy is inversely proportional to the cube of the distance between the two molecules.
Option d – Dipole-induced dipole forces: Interaction energy is inversely proportional to the cube of the distance between the two molecules.
Containers X and Y have the same ideal gas. If the pressure, temperature, and volume of Y are all twice that of X then the ratio of the number of moles of the gas in X and Y are ……..
(A) 1 : 2
(B) 2 : 1
(C) 1 : 4
(D) 4 : 1
Option a – 1 : 2
Among the following gases, which one has the lowest root mean square velocity at 25 °C?
(A) CO₂
(B) Ar
(C) 0₂
(D) Cl₂
Option d – Cl₂
If a graph is plotted between the temperature on the x-axis and the volume of the one mole of gas on the y-axis at constant pressure, then a straight line is obtained which cuts the temperature axis at ………
(A) 0°C
(B) 0 K
(C) -273 K
(D) 273 K
Option b – 0 K
Which of the following shows deviation from ideal behavior at the given conditions?
(A) 5.6 L of CO₂ at STP is equal to 11 g
(B) 16 g 0₂ STP occupies 11.2 L
(C) 2 g H₂ in 1.0 L flask exerts a pressure of 22.4 atm at 273 K
(D) 1 mole NH, at 300 K and I atm occupies volume 22.4 L
Option d – 1 mole NH, at 300 K and I atm occupies volume 22.4 L
For a given mass of ideal gas, which of the following graph is a straight line passing through the origin?
(A) Graph of P versus 1/V at a constant temperature.
(B) Graph of P versus V at a constant temperature.
(C) Graph of P versus T (K) at constant volume.
(D) Graph of PV versus P at a constant temperature.
Option a – Graph of P versus 1/V at a constant temperature.
A 3.81 g sample of an oxide of nitrogen believed to be NO2, N₂O, NO or N₂O5 occupies a volume of 3.21 L at 25 °C and 737 mm Hg pressure. Assuming ideal behavior, which oxide is it?
(A) NO₂
(B) N₂O
(C) NO
(D) N₂O5
Option c – NO
10 g C₂H6 is filled in a bulb of 1-liter capacity which can withstand a maximum pressure of 10 atm. Assuming ideal behavior, at what temperature will the pressure of the gas reach the bursting limit?
(A) 80 °C
(B) 92.4 °C
(C) 110.6 °C
(D) 140 °C
Option b – 92.4 °C
As compared to a gas ‘X’, the diffusion rate of CH4 is 4 times. The molecular weight of gas X is ………
(A) 64
(B) 16
(C) 4
(D) 8
Option a – 64
Two flasks ‘P’ and ‘Q’ of 1 L each are filled with ideal gas A₂ (diatomic) and A3 (triatomic) respectively at 300 K and 1 atm pressure. Find the CORRECT statement.
(A) Both flasks contain the same number of molecules of the respective gases.
(B) The number of molecules in flask ‘P’ is more than the number of molecules in flask ‘Q’.
(C) The number of molecules in flask ‘P’ is less than the number of molecules in flask ‘Q’.
(D) Both the flasks contain the same number of atoms of element ‘A’.
Option a – Both flasks contain the same number of molecules of the respective gases.
At what temperature, the kinetic energy of a gas molecule becomes half of its value at 327 °C?
(A) 13.5 °C
(B) 150 °C
(C) 27 °C
(D) -123 °C
Option c – 27 °C
From the statements given below, select the CORRECT statements. I. As intermolecular attraction increases, surface tension increases. The shape of the water drop is distorted due to the action of gravity. III. Soaps and detergents drastically decrease the surface tension of water. IV. As temperature increases, surface tension increases.
(A) I, II, III, IV
(B) II, III, IV
(C) I, II, III
(D) I, II
Option c – I, II, III
Find the compressibility factor for a gas if one mole of the gas occupies 500 cm³ at -10 °C and 30 atm.
(A) 0.50
(B) 0.69
(C) 0.73
(D) 6.9
Option b – 0.69
When two moles of an ideal gas are heated from 27 °C to 127 °C at a constant pressure of 1 atm, its final volume becomes ………. times the initial volume.
(A) 4.70
(B) 1.33
(C) 0.33
(D) 2.33
Option b – 1.33
Two non-reactive gases are enclosed in a glass vessel. If the partial pressures of the two gases are 490 mm Hg and 260 mm Hg respectively, then the total pressure of the mixture is ………
(A) 750 mm Hg
(B) 230 mm Hg
(C) 375 mm Hg
(D) 460 mm Hg
Option a – 750 mm Hg
The volume occupied by 1 mol of a real gas is 20 L at a certain temperature and pressure. The compressibility factor for the gas is 0.88. If the gas behaves as an ideal gas at the same temperature and pressure, then its volume will be ………..
(A) 21.5 L
(B) 22.7 L
(C) 45.4 L
(D) 16.0 L
Option b – 22.7 L
A simple manometer is a device used to measure the pressure of a gas. If the level of mercury in the open arm is 2.3 cm lower than that in the other arm of the manometer connected to the gas bulb, what is the pressure of the gas in the bulb? Atmospheric pressure is 746 mm Hg
(A) 723 mm Hg
(B) 746 mm Hg
(C) 760 mm Hg
(D) 769 mm Hg
Option a – 723 mm Hg
At what temperature will 1 mole of ideal gas P have the same average kinetic energy as that of 1 mole of ideal gas R at 45 °C?
(A) 0°C
(B) 30 °C
(C) 45 °C
(D) 60 °C
Option c – 45 °C
Dipole-induced dipole-type of interactions is present between ……. ( Solid Liquid and Gases Class 5 )
(A) H₂O molecules and H-F molecules
(B) two He atoms
(C) He atoms and H₂O molecules
(D) two HCI molecules
Option c – He atoms and H₂O molecules
We covered all the solid liquid and gases class 5 above in this post for free so that you can practice well for the exam.
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