An isolated system-
1. | is a specified region where transfer of energy and mass takes place |
2. | is a region of constant mass and only energy is allowed through the closed boundaries |
3. | is one in which mass within the system is not necessarily constant. |
4. | cannot transfer neither energy nor mass to or from the surroundings. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe pressure and temperature of two different gases are P and T with volume V for each. If they are mixed, keeping the same volume and temperature, the pressure of the mixture will be:
1. P/2
2. P
3. 2P
4. 4P
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIf the mean free path of atoms is doubled then the pressure of the gas will become:
1. \(P/4\)
2. \(P/2\)
3. \(P/8\)
4. \(P\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA diatomic molecule has how many degrees of freedom-
(1) 3 (2) 4 (3) 5 (4) 6
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA thermally insulated piston divides a container into two compartments. Volume, temperature, and pressure in the right compartment are 2V, T and 2P, while in the left compartment the respective values are V, T and P. If the piston can slide freely, then in the final equilibrium position, the volume of the right-hand compartment will be :
1. V
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe graph which represents the variation of mean kinetic energy of molecules with temperature is ?
(1)
(2)
(3)
(4)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biologyare root mean square, average and most probable speeds of molecules of a gas obeying Maxwellian velocity distribution. Which of the following statements is correct?
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGas is found to obey the law = constant. The initial temperature and volume are and . If the gas expands to a volume , its final temperature becomes:
1.
2.
3.
4. None of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFor a gas, the r.m.s speed at 800 K is:
1. Four times the value at 200 K
2. Half the value at 200 K
3. Twice the value at 200 K
4. Same as at 200 K
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe average kinetic energy of a helium atom at is: [MP PMT 2004]
1. Less than 1 eV
2. A few KeV
3. 50-60 eV
4. 13.6 eV
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology