Explore topic-wise MCQs in Rocket Propulsion.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Rocket Propulsion knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the energy released (or absorbed), or the enthalpy change when one mole of a chemical compound is formed from its constituent atoms or elements at one bar and isothermally at 25 C?

A. Heat of formation
B. Heat of reaction
C. Gibbs free energy
D. Latent heat of vaporization
Answer» B. Heat of reaction
Discussion
2.

The decomposition of solid propellants to reaction mixture is a(n) ______________ chemical reaction.

A. reversible
B. irreversible
C. stoichiometric
D. ideal
Answer» C. stoichiometric
Discussion
3.

Rocket propulsion usually operates in ___________ mixture ratio.

A. fuel rich
B. oxidizer rich
C. stoichiometric
D. any
Answer» B. oxidizer rich
Discussion
4.

Determine the stoichiometric mixture mass ratio for the complete reaction: H2 + 1/2 O2 H2O.

A. 2:1
B. 16:1
C. 4:1
D. 8:1
Answer» E.
Discussion
5.

What is the number of condensed species in a gaseous mixture, if there are 8 possible species which enter into a relationship and out of these, only 5 are gases?

A. 3
B. 2
C. 9
D. 6
Answer» B. 2
Discussion
6.

In a gaseous mixture, the number of moles and the molecular mass (in their respective units) of each component is given as follows: nA = 1, MA = 23; nB = 2, MB = 48; nC = 3, MC = 19. Find the average molecular mass of the mixture.

A. 28.67
B. 29.33
C. 31.25
D. 25.47
Answer» C. 31.25
Discussion
7.

Consider two sets of mixture of gases X and Y having the same total temperature of the mixture and having total pressures PX and PY respectively. If PX = 1.4 PY and molecular mass of A MX = 2.3 x MY, determine the ratio of Vmix_X/Vmix_Y.

A. 0.26
B. 0.52
C. 0.62
D. 0.31
Answer» E.
Discussion
8.

Consider two sets of mixture of gases A and B having the same specific volume of the mixture and having total pressures PA and PB respectively. If TA = 3TB and molecular mass of A MA = 1/2 MB, determine the ratio of PA/PB.

A. 0.75
B. 12
C. 1.5
D. 6
Answer» E.
Discussion
9.

Perfect gas equation applies very closely to ________ gases.

A. low temperature, low pressure
B. high temperature, high pressure
C. high temperature, low pressure
D. low temperature, high pressure
Answer» D. low temperature, high pressure
Discussion
10.

Consider a mixture of three gases a, b and c at equilibrium. If the individual gas components have pressures equal to Pa, Pb and Pc, determine the total pressure P of the mixture of gases.

A. P = P<sub>a</sub> + P<sub>b</sub> + P<sub>c</sub>
B. P = P<sub>a</sub> x P<sub>b</sub> x P<sub>c</sub> /(P<sub>a</sub> + P<sub>b</sub> + P<sub>c</sub>)
C. P = [(P<sub>a</sub> x P<sub>b</sub>) + (P<sub>b</sub> x P<sub>c</sub>) + (P<sub>c</sub> x P<sub>a</sub>)] / (P<sub>a</sub> + P<sub>b</sub> + P<sub>c</sub>)
D. P = (P<sub>a</sub> x P<sub>b</sub> / P<sub>c</sub>) + (P<sub>b</sub> x P<sub>c</sub> / P<sub>a</sub>) + (P<sub>c</sub> x P<sub>a</sub> / P<sub>b</sub>)
Answer» B. P = P<sub>a</sub> x P<sub>b</sub> x P<sub>c</sub> /(P<sub>a</sub> + P<sub>b</sub> + P<sub>c</sub>)
Discussion