Explore topic-wise MCQs in ENGINEERING SERVICES EXAMINATION (ESE).

This section includes 36 Mcqs, each offering curated multiple-choice questions to sharpen your ENGINEERING SERVICES EXAMINATION (ESE) knowledge and support exam preparation. Choose a topic below to get started.

1.

Ionization energy decreases down the group. It is the energy required by an isolated gaseous atom to form an anion.

A. True
B. False
Answer» C.
2.

 Radon is the sixth member of group 18 of the modern periodic table. Unlike other members of this group, Radon:

A. is solid near room temperature
B. is radioactive
C. possess high chemical reactivity
D. all of the mentioned
Answer» C. possess high chemical reactivity
3.

Moving down a group, which of the following properties generally diminishes?

A. Electronegativity
B. Metallic character
C. Atomic radius
D. Molar mass
Answer» B. Metallic character
4.

Uranium and Thorium are two important elements in the nuclear power industry. In which block of the modern periodic table are they placed?

A. s-block
B. p-block
C. d-block
D. f-block
Answer» E.
5.

d-block elements generally show multiple oxidation states. An exception to this is:

A. Zinc
B. Mercury
C. Copper
D. None of the mentioned
Answer» E.
6.

There are seventeen non-metals in the periodic table. Unlike metals in the same period, they have higher:

A. Atomic number
B. Atomic size
C. Electropositivity
D. All of the mentioned
Answer» B. Atomic size
7.

Temporary IUPAC systematic symbol for the synthetic element 117 is:

A. Uuh
B. Uns
C. Uus
D. Une
Answer» D. Une
8.

How many periods are there in a modern periodic table?

A. 5
B. 6
C. 7
D. 8
Answer» D. 8
9.

As we move down a group, electronegativity of elements generally:

A. Increases
B. Decreases
C. Increases and then decreases
D. Decreases and then increases
Answer» B. Decreases
10.

Elements in the same column of the periodic table have:

A. Similar valence shell electron configuration
B. Same value of highest principal quantum number
C. Same number of nucleons
D. All of the mentioned
Answer» B. Same value of highest principal quantum number
11.

Avogadro’s number of water molecules occupy 22.4 liters of space at 273 K

A. True
B. False
Answer» C.
12.

Species with the same number of neutrons but the different number of protons are called:

A. Isotones
B. Isotopes
C. Isomers
D. Isobars
Answer» B. Isotopes
13.

Avogadro’s number of water molecules occupy 22.4 liters of space at 273 K.

A. True
B. False
Answer» C.
14.

One unified atomic mass unit equals:

A. 1/12 of molar mass of Carbon
B. 1/16 of atomic mass of Oxygen
C. molecular mass of Hydrogen
D. all of the mentioned
Answer» C. molecular mass of Hydrogen
15.

Which if the following is not an SI unit?

A. Kilogram
B. Mole
C. Atomic Mass Unit
D. Coulomb
Answer» D. Coulomb
16.

Which of the following is not a pure form of matter?

A. Element
B. Compound
C. Solution
D. Both Compound and Solution
Answer» D. Both Compound and Solution
17.

Which of the following has the least number of atoms?

A. One gram of Hydrogen gas
B. One gram of Helium gas
C. One gram-mole of Oxygen gas
D. One gram-mole of Chlorine gas
Answer» C. One gram-mole of Oxygen gas
18.

Oxygen gas is denser than Carbon Dioxide gas?

A. True
B. False
Answer» C.
19.

Atomic number of a species is the number of:

A. Neutrons
B. Protons
C. Valence electrons
D. Nucleons
Answer» C. Valence electrons
20.

 Species with the same number of neutrons but the different number of protons are called:

A. Isotones
B. Isotopes
C. Isomers
D. Isobars
Answer» B. Isotopes
21.

Calcium is an isobar of Argon. They differ in:

A. Atomic weight
B. Number of nucleons
C. Number of neutrons
D. None of the mentioned
Answer» D. None of the mentioned
22.

Various isotopes of a given element have same:

A. Number of protons
B. Number of neutrons
C. Molar mass
D. Thermodynamic stability
Answer» B. Number of neutrons
23.

Which of the following is true for polymers?

A. They have very high molecular mass
B. They do not have a linear stress-strain curve
C. They have high strength to mass ratio
D. All of the mentioned
Answer» E.
24.

Which of the following cannot be used as bio-materials?

A. Metals
B. Ceramics
C. Polymers
D. None of the mentioned
Answer» E.
25.

Ceramics make excellent refractory materials. A material is said to be refractory if it:

A. resists the flow of electric current
B. has high refractive index
C. retains its strength at high temperatures
D. all of the mentioned
Answer» D. all of the mentioned
26.

GFRP is an important composite. It stands for

A. Gelatin Fibre Reinforced Polymer
B. Graphite Fibre Reinforced Polymer
C. Germanium Fibre Reinforced Polymer
D. Glass Fibre Reinforced Polymer
Answer» E.
27.

Steels mainly contain iron and carbon. Under which of the following categories do they belong?

A. Metallic Solid
B. Polymer
C. Composites
D. Ceramics
Answer» B. Polymer
28.

 In terms of which of the following properties, metals are better than ceramics?

A. Hardness
B. Ductility
C. Toughness
D. Yield Strength
Answer» C. Toughness
29.

The phase above eutectoid temperature for carbon steels is known as _______

A. Cementite
B. Ferrite
C. Pearlite
D. Austentite
Answer» E.
30.

What is the eutectoid structure of Iron?

A. Cementite
B. Ferrite
C. Pearlite
D. Austentite
Answer» D. Austentite
31.

Any composition left and right of P will generate ___________

A. Excess of liquid and α
B. Excess of α and liquid
C. Excess of liquid and β
D. Excess of β and liquid
Answer» C. Excess of liquid and β
32.

At what temperature, all liquid and αwill convert to β?

A. Eutectic temperature
B. Peritectic temperature
C. Eutectoid temperature
D. Peritectoid temperature
Answer» C. Eutectoid temperature
33.

Which phase will crystallize first just below the liquidus line?

A. α phase
B. β phase
C. (L+α) phase
D. (L+β) phase
Answer» B. β phase
34.

A first solid phase results in a second solid plus another third solid phase upon heating during __________ reaction.

A. Eutectoid
B. Peritectic
C. Eutectic
D. Peritectoid
Answer» E.
35.

A first solid phase results in a second solid phase another third solid phase on cooling during __________ reaction.

A. Eutectoid
B. Peritectic
C. Eutectic
D. Peritectoid
Answer» B. Peritectic
36.

On heating, one solid phase results in another solid phase and a liquid phase during __________ reaction.

A. Eutectoid
B. Peritectic
C. Eutectic
D. Peritectoid
Answer» C. Eutectic