Match the following process with entropy change
Reaction | Entropy change |
A. A liquid vaporizes | 1. |
B. Reaction is non-spontaneous at all temperatures and is positive | 2. |
C. Reversible expansion of an ideal gas | 3. |
Codes
A | B | C | |
1. | 2 | 3 | 1 |
2. | 1 | 2 | 3 |
3. | 1 | 3 | 2 |
4. | 3 | 2 | 1 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch the following parameters with a description for spontaneity.
\(\Delta\) (Parameters) \(\Delta r\ H^⊝\) \(\Delta r\ S^⊝\)\(\Delta r\ G^⊝\) | Description |
A. + - + | 1. Non-spontaneous at high temperature |
B. - - + at high T | 2. Spontaneous at all temperatures |
C. - + - | 3. Non-spontaneous at all temperatures |
Codes
A | B | C | |
1. | 3 | 1 | 2 |
2. | 1 | 2 | 3 |
3. | 1 | 3 | 2 |
4. | 3 | 2 | 1 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch the following:
A. Entropy of vaporization |
1. Decreases |
B. K for a spontaneous process |
2. Is always positive |
C. Crystalline solid state |
3. Lowest entropy |
D. in an adiabatic expansion of ideal gas |
4. |
Codes
A B C D
1. 2, 4 2 3 1
2. 1 2 3 4
3. 1 4, 3 3 2
4. 4 3 3, 1 2
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion: Spontaneous process is an irreversible process and may be reversed by some external agency.
Reason: A decrease in enthalpy is a contributing factor to spontaneity.
1. Both assertion and reason are true and the reason is the correct explanation of assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of assertion.
3. Assertion is true but the reason is false.
4. Assertion is false but the reason is true.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion: A liquid crystallises into a solid and is accompanied by a decrease in entropy.
Reason: In crystals, molecules organise in an ordered manner.
1. Both assertion and reason are true and the reason is the correct explanation of assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of assertion.
3. Assertion is true but the reason is false.
4. Assertion is false but the reason is true.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe entropy change can be calculated by using the expression . When water freezes in a glass beaker, the correct statement among the following is -
1. (system) decreases but (surroundings) remains the same
2. (system) increases but (surroundings) decreases
3. (system) decreases but (surroundings) increases
4. (system) decreases but (surroundings) also decreases
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is not correct?
1. is zero for a reversible reaction.
2. is positive for a spontaneous reaction.
3. is negative for a spontaneous reaction.
4. is positive for a non-spontaneous reaction.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe processes among the following that occur spontaneously are -
(a) The flow of heat from colder to a warmer body
(b) Gas in a container contracting into one corner
(c) Gas expanding to fill the available volume
(d) Burning carbon in oxygen to give carbon dioxide
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology