Thermodynamics Test

Result

Thermodynamics Test - 53

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

The latent heat of vaporisation of a liquid at 500 K and 1 atm pressure is 10 kcal/mol. What will be the change in internal energy (∆E) of 3 moles of liquid at the same temperature?

A
13.0 kcal

B
– 13.0 kcal

C
27.0 kcal

D
– 27.0 kcal
Question 2
4 / -1

The work done in ergs for a reversible expansion of one mole of an ideal gas from a volume of 10 litres at 25°C is :

A
3.43 KJ

B
3.43 Kcal

C
3.43 J

D
3.43 cal
Question 3
4 / -1

Reaction, H₂(g) + I₂ (g) → 2HI; ∆H = 12.40 kcal. According to this, heat of formation of HI will be

A
12.40 kcal

B
– 12.4 kcal

C
– 6.20 kcal

D
`6.20 kcal
Question 4
4 / -1

The heat of combustion of yellow phosphorus and red phosphorus are – 9.91 kJ and – 8.78 kJ respectively. The heat of transition of yellow phosphorus to red phosphorus is :

A
– 18.69 kJ

B
– 67.6 kcal

C
– 120.6 kcal

D
+52.8 kcal
Question 5
4 / -1

The heat of formation of CO(g) and CO₂ (g) are – 26.4 kcal and – 94.0 kcal respectively. The heat of combustion of carbon monoxide will be :

A
+ 26.4 kcal

B
– 67.6 kcal

C
– 120.6 kcal

D
+52.8 kcal
Question 6
4 / -1

The heats of combustion of rhombic and monoclinic sulphur are – 70960 and – 71030 calorie respectively. What will be the heat of conversion of rhombic sulphur to monoclinic sulphur?

A
– 70960 cal

B
– 71030 cal

C
70 cal

D
– 70 cal
Question 7
4 / -1

An ideal gas expands in volume from 1 × 10^–3 m³ to 1 × 10^–2 m³ at 300 K against a constant pressure of 1 × 105 Nm^–2 . The work is :

A
– 900 J

B
– 900 kJ

C
270 kJ

D
+ 900 kJ

Solution
Question 8
4 / -1

The enthalpies of combustion of carbon and carbon monoxide are – 393.5 and – 283 kJ mol^{– 1} respectively. The enthalpy of formation of carbon monoxide per mole is

A
110.5 kJ

B
676.5 kJ

C
– 676.5 kJ

D
– 110.5 kJ

Solution
Question 9
4 / -1

If the bond dissociation energies of XY, X₂ and Y₂ (all diatomic molecules) are in the ratio of 1 : 1 : 0.5 and DHf for the formation of XY is – 200 KJ mol^–1. The bond dissociation energy of X₂ will be

A
100 KJ mol^–1

B
200 KJ mol^–1

C
300 KJ mol^–1

D
800 KJ mol^–1

Solution
Question 10
4 / -1

Consider the reaction, N₂(g) + 3H₂(g) 2NH₃(g); carried out at constant temperature and pressure. If ∆H and ∆U are enthalpy change and internal energy change respectively, which of the following expressions is true ?

A
∆H = 0

B
∆H = ∆U

C
∆H < ∆U

D
∆H > ∆U

Solution

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Thermodynamics Test - 53

Result

Thermodynamics Test - 53

Score

-

Rank

-

SHARING IS CARING

Question 1

13.0 kcal

– 13.0 kcal

27.0 kcal

– 27.0 kcal

Question 2

3.43 KJ

3.43 Kcal

3.43 J

3.43 cal

Question 3

12.40 kcal

– 12.4 kcal

– 6.20 kcal

`6.20 kcal

Question 4

– 18.69 kJ

– 67.6 kcal

– 120.6 kcal

+52.8 kcal

Question 5

+ 26.4 kcal

– 67.6 kcal

– 120.6 kcal

+52.8 kcal

Question 6

– 70960 cal

– 71030 cal

70 cal

– 70 cal

Question 7

– 900 J

– 900 kJ

270 kJ

+ 900 kJ

Solution

Question 8

110.5 kJ

676.5 kJ

– 676.5 kJ

– 110.5 kJ

Solution

Question 9

100 KJ mol–1

200 KJ mol–1

300 KJ mol–1

800 KJ mol–1

Solution

Question 10

∆H = 0

∆H = ∆U

∆H < ∆U

∆H > ∆U

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.

100 KJ mol^–1

200 KJ mol^–1

300 KJ mol^–1

800 KJ mol^–1