If a process is both endothermic and spontaneous, then :

1. S>0

2. S<0

3. H<0

4. G>0

Concept Questions :-

Gibbs Energy Change
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


The bond energies of C=C and C-C at 298 K are 590 and 331 kJ mol-1 respectively. The enthalpy of polymerization per mole of ethylene is

1. -70 kJ

2. -72 kJ

3. 72 kJ

4. -68 kJ

Concept Questions :-

Thermochemistry
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


1 mole of NH3 gas at 27C is expanded adaibatic condition to make volume 8 times (γ=1.33). Final temperature and work done respectively are-

1. 150 K, 900 cal

2. 150 K, 400 cal

3. 250 K, 1000 cal

4. 200 K, 800 cal

Concept Questions :-

CP and CV and Relation for Real Gas
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Which of the following statements is correct with regard to G of a cell reaction and EMF of the cell (E) in which the reaction occurs ?

(A) Both G and E are extensive properties

(B) G is an intensive property but E is an extensive property

(C) G is an extensive property and E is an intensive property

(D) Both G and E are intensive properties.

Concept Questions :-

Extensive and Intensive Properties
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Temperature of 1 mol of a gas is increased by 1 at constant pressure. Work done is-

1. R

2. 2R

3. R/2

4. 3R

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


When 0.16 g of glucose was burnt in a bomb calorimeter, the temperature rose by 4 deg. Calculate the calorimeter constant (water equivalent of the calorimeter) given that H=-2.8×106 J mol-1. [molar enthalpy of combustion]. Molar mass of glucose = 180 mol-1.

1. 5.73×102 J/deg

2. 7.53×102 J/deg

3. 6.22×102 J/deg

4. 3.57×102 J/deg

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


The C-Cl bond energy can be calculated from :

1. HfCCl4, l only

2. fCCl4, l and Cl2

3. HfCCl4, l Cl2

4. HfCCl4, l Cl2, HfC, g and HvapCCl4

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Given Hf of DyCl3 (s) = -994.30 kJ mol-1

12H2g+12Cl2g+aqHClaq. 4 M;              H=-158.31 kJ mol-1DyCl3sHClaqDyCl3aq. in 4 M HCl;                H=-180.06 kJ mol-1Dysaq. 4 M+3 HClDyCl3aq. 4 M HCl+32H2g;   H=x, calculate x.

1. -966.5 kJ/mol

2. -699.43 kJ/mol

3. -596.6 kJ/mol

4. -569.6 kJ/mol

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


1 g H2 gas at S.T.P is expanded so that volume is doubled. Hence work done is:

1. 22.4 L atm

2. 5.6 L atm

3. 11.2 L atm

4. 44.8 L atm

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


H for the reaction 2C(s) + 3H2(g)C2H6(g) is -20.24 kcal/mol. To what value of the enthalpy of sublimation of C(s) does this point given that the bond energies of C-C, C-H and H-H are 63 kcal/mol, 85.6 kcal/mol and 102.6 kcal/mol.

1. 124.3 kcal/mol

2. 185.3 kcal/mol

3. 158.3 kcal/mol

4. 211.5 kcal/mol

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level: