Explore topic-wise MCQs in Solid State Chemistry.

This section includes 24 Mcqs, each offering curated multiple-choice questions to sharpen your Solid State Chemistry knowledge and support exam preparation. Choose a topic below to get started.

1.

Consider two rocket engines A and B with A having a specific impulse of 242s and B having a specific impulse of 150s. What can be said about their efficiency?

A. Both A and B are equally efficient
B. A is more efficient than B
C. B is more efficient than A
D. Efficiency doesn’t depend on specific impulse
Answer» C. B is more efficient than A
Discussion
2.

Given that the total impulse is 25000 Ns and specific impulse is 300s, find out the effective propellant mass for a burn duration of 8s.

A. 17 kg
B. 8.5 kg
C. 34 kg
D. 68 kg
Answer» C. 34 kg
Discussion
3.

For a rocket, the specific impulse was found to be 250s. Given that the thrust force is constant and assuming gravity-free and drag-free conditions, what will the thrust force be for a mass flow rate of the form (4t2-3t) kg/s and a burn duration of 3s?

A. 18375 N
B. 12426 N
C. 25234 N
D. 15595 N
Answer» B. 12426 N
Discussion
4.

Suppose the thrust force of a rocket varies with time t as F = 250(3t2 + 2t). Then find out the total impulse for a burn duration of 4s.

A. 10000 Ns
B. 20000 Ns
C. 40000 Ns
D. 80000 Ns
Answer» C. 40000 Ns
Discussion
5.

For a constant thrust of 6000 N, find the total impulse for the burning time of 3s.

A. 36000 Ns
B. 18000 Ns
C. 9000 Ns
D. 0 Ns
Answer» C. 9000 Ns
Discussion
6.

What is the typical liquid propellant feed system used in space launch vehicles?

A. The Gas pressure feed system
B. Pump-fed system
C. Gravity assisted feed system
D. No feed system is used
Answer» C. Gravity assisted feed system
Discussion
7.

Which of the following pressure feed systems is mostly used in attitude control of liquid propellant rocket engine with more than one thrust chamber per engine?

A. The Gas pressure feed system
B. Pump-fed system
C. Gravity assisted feed system
D. No feed system is used
Answer» B. Pump-fed system
Discussion
8.

What is the range of temperature of reaction product gases in a rocket engine?

A. 500 to 1700 °C
B. 1700 to 2500 °C
C. 2500 to 4100 °C
D. 4100 to 6900 °C
Answer» D. 4100 to 6900 °C
Discussion
9.

Which of the following is not a valid classification of rocket engines based on their energy source?

A. Chemical
B. Geothermal
C. Solar
D. Nuclear
Answer» C. Solar
Discussion
10.

Which of the following is not an air-breathing engine?

A. Turbojet
B. Turbofan
C. Rocket
D. Scramjet
Answer» D. Scramjet
Discussion
11.

Which of the following statements is true for the diffraction patterns in the crystal lattice?

A. Diffraction patterns possess a center of symmetry
B. Diffraction patterns doesn’t have center of symmetry
C. Diffraction patterns are linear space
D. Diffraction patterns contains α-rays
Answer» B. Diffraction patterns doesn’t have center of symmetry
Discussion
12.

What is the value of Z (no. of the atoms) in the α-Fe structure?

A. 1
B. 2
C. 3
D. 4
Answer» C. 3
Discussion
13.

Lattice planes which are introduced with Bragg’s Law are defined from which of the following factors?

A. Shape and concentration of the crystal
B. Solubility and concentration of the crystal
C. Number of unit cell present in the crystal
D. Shape and dimensions of the unit cell of the crystal
Answer» E.
Discussion
14.

Which of the following unit cell has all the angles at 90˚ but the sides are of unequal length?

A. Monoclinic unit cell
B. Orthorhombic unit cell
C. Triclinic unit cell
D. Hex clinic unit cell
Answer» C. Triclinic unit cell
Discussion
15.

WHAT_IS_THE_VALUE_OF_Z_(NO._OF_THE_ATOMS)_IN_THE_‚ÂÀ√≠¬¨¬±-FE_STRUCTURE??$#

A. 1
B. 2
C. 3
D. 4
Answer» C. 3
Discussion
16.

Which_of_the_following_statements_is_true_for_the_diffraction_patterns_in_the_crystal_lattice?$

A. Diffraction patterns possess a center of symmetry
B. Diffraction patterns doesn’t have center of symmetry
C. Diffraction patterns are linear space
D. Diffraction patterns contains α-rays
Answer» B. Diffraction patterns doesn‚Äö√Ñ√∂‚àö√ë‚àö¬•t have center of symmetry
Discussion
17.

In the diffraction of X-rays by the set of a plane, in some cases the resultant intensity is zero, these are caused by absent reflections, what is the number absent reflection is divided?

A. 2
B. 10
C. 50
D. 100
Answer» B. 10
Discussion
18.

Labelling of the lattice planes is done by using ___________

A. Bragg’s indices
B. Miller indices
C. Stockbarger indices
D. Dalton’s indices
Answer» C. Stockbarger indices
Discussion
19.

Lattice planes which are introduced with Bragg‚Äö√Ñ√∂‚àö√ë‚àö¬•s Law are defined from which of the following factors? 

A. Shape and concentration of the crystal
B. Solubility and concentration of the crystal
C. Number of unit cell present in the crystal
D. Shape and dimensions of the unit cell of the crystal
Answer» E.
Discussion
20.

For the crystal structures how many numbers of Bravais lattice are there?

A. 3
B. 6
C. 14
D. 24
Answer» D. 24
Discussion
21.

The unit cell in which the top face is partially sheared relative to the bottom face and in a direction parallel to one of the box edges is known as_______

A. Orthorhombic unit cell
B. Monoclinic unit cell
C. Triclinic unit cell
D. Trigon unit cell
Answer» C. Triclinic unit cell
Discussion
22.

Which of the following unit cell has all the angles at 90Àö but the sides are of unequal length?$

A. Monoclinic unit cell
B. Orthorhombic unit cell
C. Triclinic unit cell
D. Hex clinic unit cell
Answer» C. Triclinic unit cell
Discussion
23.

Crystals in which the number of the combinations of the symmetric molecule is limited to 32 is known as _________

A. Crystallographic unit cell
B. Crystallographic point groups
C. Crystallographic crystals
D. Crystallographic atoms
Answer» C. Crystallographic crystals
Discussion
24.

The smallest repetitive unit of the crystal structure is known as____________

A. Atoms
B. Compound
C. Unit cell
D. Lattice
Answer» D. Lattice
Discussion