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Thermodynamics (Thermo-chemistry) - Online MCQ questions with their hints and solutions


India Study Solution Test Series (Chemistry Practice Questions)
NEET, JEE IIT, AIIMS, NTSE | Engineering, BDS, MBBS Admission Test
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As you are aware that in each set of India Study Solution test series we bring for you 10 new most important questions with their hints & solutions. This post is from our Chemistry Solutions chapter - Thermodynamics (Thermo-chemistry).
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Please scroll down to find NEET and JEE syllabus of Thermodynamics (Thermochemistry).

Chemistry Practice Questions: Thermodynamics 

India Study Solution MCQ Test Series – Set 3 (Q. No 21-30)
Question 21: A gas expands isothermally against a constant external pressure of 1 atm from a volume of 10 dm
a. -312 J
b. +123 J
c. +312 J
d. -213 J

Question 22: The incorrect statement according to second law of thermodynamics is
a. Heat can flow from colder body to a hotter body of its own
b. All spontaneous processes are thermodynamically irreversible
c. Heat can be converted into work completely without causing some permanent change in the system (or) surroundings
d. Perpetual motion machine of second kind is not possible

Question 23: If one mole of ammonia and one mole of hydrogen chloride are mixed in a close container to form ammonium chloride gas, then
a. ∆H > ∆U
b. ∆H = ∆U
c. ∆H < ∆U
d. No relationship

Question 24: Molar heat capacity of water in equilibrium with the ice at constant pressure is:
a. Zero
b. Infinity (∞)
c. 40.45 KJK
d. 5.48 JK

Question 25: The work done in adiabatic process on ideal gas by a constant external pressure would be
a. Zero
b. ∆E
c. ∆H
d. ∆G

Question 26: For the equations
C (diamond) + 2H
C (g) + 4H (g) ==> CH
Predict whether
a. ∆H
b. ∆H
c. ∆H
d. ∆H

Question 27: If a process is both endothermic and spontaneous then
a. ∆S > 0
b.∆S < 0
c.∆H < 0
d.∆G > 0

Question 28: An ideal gas occupying a volume of 2 dm
a. 10 dm
b. 8 dm
c. 10 dm
d. 10 m

Question 29: Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction?
a. Exothermic and increasing disorder
b. Exothermic and decreasing disorder
c. Endothermic and increasing disorder
d. Endothermic and decreasing disorder

Question 30: Which of the following conditions regarding a chemical process ensures its spontaneity at all temperature?
a. ∆H > 0, ∆G < 0
b. ∆H < 0, ∆S > 0
c. ∆H < 0, ∆S < 0
d. ∆H > 0, ∆S < 0

Thermodynamics / Thermo-chemistry (NEET / JEE syllabus):
General characteristics, electronic configuration, occurrence, anomalous properties of the first element of each group, diagonal relationship, trends in the variation of properties (such as ionization enthalpy, atomic and ionic radii), trends in chemical reactivity with oxygen, water, hydrogen and halogens; uses of the compounds of Group I Elements (Alkali Metals) and Group II Elements (Alkaline Earth Metals). Preparation and Properties of Some important Compounds: sodium carbonate, sodium chloride, sodium hydroxide and sodium hydrogen carbonate, biological importance of sodium and potassium. Anomalous behaviour of beryllium. Industrial use lime and limestone, biological importance of Mg and Ca.
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India Study Solution MCQ Test Series - Hints and Solutions
Set 3 (Q. No.21–30)
Answer 21: d.

 THERMODYNAMICS (Thermo-chemistry) - India Study Solution Chemistry Test Series Questions

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