If the value of H in a reaction is positive, then the reaction is called

(1) Exothermic

(2) Endothermic

(3) Polymorphic

(4) Polytropic

Subtopic:  Thermochemistry |
 90%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Molar heat capacity at constant P for a substance is equal to

(1) (U/T)v (2) (H/T)V (3) (H/T)P (4) (U/T)P

Subtopic:  Cp & Cv |
 69%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Plants and living beings are examples of -
1. Isolated system
2. Adiabatic system
3. Open system
4. Closed system

Subtopic:  Classification of System, Extensive & Intensive Properties |
 78%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

For an adiabatic expansion of a perfect gas, P/P is equal to?

(1) VV   

(2)   -yVV     

(3)  yVV     

(4)  -y2VV 

Subtopic:  Thermodynamics' Properties and process |
 71%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

If a gas at constant temperature and pressure expands,

then its

(1) Internal energy decreases

(2) Entropy increases and then decreases

(3) Internal energy increases

(4) Internal energy remains constant

Subtopic:  Enthalpy & Internal energy |
 68%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

If a gas absorbs 200 J of heat and expands by 500 cm3 against the constant pressure of 2x105 Nm-2 , then the change in internal energy is :

1. -200 J

2. -100J

3. +100J

4. + 300J

Subtopic:  First Law of Thermodynamics |
 70%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The internal energy of a substance does not depend upon

(1) Translational energy

(2) Vibrational energy

(3) Energy due to the gravitational pull

(4) Rotational energy

Subtopic:  Enthalpy & Internal energy |
 86%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Internal energy (E) and pressure of a gas of unit volume are related

as

(1) P=23E    

(2) P=32E   

(3)   P=E2     

(4) P=2E

Subtopic:  Enthalpy & Internal energy |
 58%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Identify the false statement among the following.

1. Temperature is a state function.
2. Work is a state function. 
3. Change in the state is completely defined when the initial and final states are specified​.
4. Work appears at the boundary of the system.

Subtopic:  Thermodynamics' Properties and process |
 87%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Considering entropy (S) as a thermodynamic parameter, the criterion for the spontaneity of any process is:


1. Ssystem+Ssurroundings>0

2. Ssystem-Ssurroundings>0

3. Ssystem>0 only

4. Ssurroundings>0 only

Subtopic:  Spontaneity & Entropy |
 81%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh