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Objective Questions

Latest SECL Junior Technical Inspector Exam Question (Objective Questions), MCQ in English

Subjects : Subject Knowledge, Mental ability/Quantitative ability logical & reasoning skill, General Awareness & Knowledge regarding CIL/SECL

Question Bank SECL Junior Technical Inspector Exam - English

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Subject Knowledge

Question 1Single Answer

Which type of hybridization is present in carbon atoms of alkanes?

A
sp
B
sp³
C
sp²
D
dsp²

Question 2Single Answer

Which hydrocarbon contains a carbon-carbon triple bond?

A
Alkane
B
Alkene
C
Aromatic hydrocarbon
D
Alkyne

Question 3Single Answer

Which bond is formed by sideways overlap of p-orbitals?

A
Sigma bond
B
Pi bond
C
Ionic bond
D
Hydrogen bond

Question 4Single Answer

Which type of isomerism arises due to different arrangement of atoms in space?

A
Geometrical isomerism
B
Chain isomerism
C
Structural isomerism
D
Functional isomerism

Question 5Single Answer

Which reaction mechanism involves substitution of a nucleophile?

A
Electrophilic addition
B
Oxidation
C
Elimination
D
Nucleophilic substitution

Question 6Single Answer

SN1 reaction mechanism proceeds via?

A
Single-step reaction
B
Two-step reaction with carbocation intermediate
C
Free radical mechanism
D
Concerted mechanism

Question 7Single Answer

SN2 reaction mechanism is characterized by?

A
Two-step reaction
B
Carbocation formation
C
Single-step bimolecular reaction
D
Free radical formation

Question 8Single Answer

Which factor stabilizes carbocation intermediates?

A
Electron withdrawing groups
B
High electronegativity
C
Hyperconjugation
D
Ionic bonds

Question 9Single Answer

Which reaction results in formation of alkene from alkyl halide?

A
Substitution
B
Addition
C
Reduction
D
Elimination

Question 10Single Answer

Which rule predicts major product in elimination reaction?

A
Saytzeff rule
B
Markovnikov rule
C
Le Chatelier principle
D
Aufbau principle

Question 11Single Answer

Which hydrocarbon shows highest reactivity in addition reactions?

A
Alkane
B
Alkyne
C
Alkene
D
Aromatic compound

Question 12Single Answer

Which functional group is present in alcohols?

A
–OH
B
–COOH
C
–CHO
D
–NH₂

Question 13Single Answer

Which compound undergoes electrophilic addition?

A
Alkane
B
Ether
C
Alcohol
D
Alkene

Question 14Single Answer

Which bond angle is present in sp² hybridized carbon?

A
10.5°
B
120°
C
180°
D
90°

Question 15Single Answer

Which hybridization corresponds to linear geometry?

A
sp
B
sp²
C
sp³
D
dsp³

Question 16Single Answer

Which intermediate is formed in SN1 reaction?

A
Carbocation
B
Carbanion
C
Free radical
D
Ion pair

Question 17Single Answer

Which reagent favors elimination reaction over substitution?

A
Strong base
B
Weak nucleophile
C
Weak base
D
Neutral solvent

Question 18Single Answer

Which type of bond is strongest?

A
Single bond
B
Triple bond
C
Double bond
D
Ionic bond

Question 19Single Answer

Which hydrocarbon is saturated?

A
Alkane
B
Alkyne
C
Alkene
D
Aromatic compound

Question 20Single Answer

Which reaction involves breaking of pi bond?

A
Substitution
B
Oxidation
C
Elimination
D
Addition

Question 21Single Answer

Which factor affects rate of SN2 reaction?

A
Carbocation stability
B
Steric hindrance
C
Resonance
D
Hyperconjugation

Question 22Single Answer

Which compound shows cis-trans isomerism?

A
Methane
B
Ethane
C
Propane
D
Ethene

Question 23Single Answer

Which functional group is present in aldehydes?

A
–COOH
B
–OH
C
–CHO
D
–NH₂

Question 24Single Answer

Which reaction mechanism involves removal of hydrogen halide?

A
Addition
B
Substitution
C
Elimination
D
Reduction

Question 25Single Answer

Which bond type exists in sigma bond formation?

A
Sideways overlap
B
Head-on overlap
C
Ionic interaction
D
Hydrogen bonding

Question 26Single Answer

Atomic radius decreases across a period due to?

A
Increase in shielding
B
Increase in nuclear charge
C
Decrease in electrons
D
Constant charge

Question 27Single Answer

Ionization energy increases across a period because of?

A
Increasing nuclear attraction
B
Decreasing nuclear charge
C
Increasing shielding
D
Decreasing electrons

Question 28Single Answer

Electronegativity increases across a period due to?

A
Decrease in atomic size
B
Increase in atomic size
C
Constant size
D
Shielding

Question 29Single Answer

Which element has highest electronegativity?

A
Fluorine
B
Nitrogen
C
Oxygen
D
Chlorine

Question 30Single Answer

Atomic radius increases down a group due to?

A
Decrease in shells
B
Increase in shells
C
Decrease in electrons
D
Increase in nuclear charge

Question 31Single Answer

Transition elements are characterized by?

A
Partially filled d-orbitals
B
Fully filled orbitals
C
Only s orbitals
D
Only p orbitals

Question 32Single Answer

Which property is common in transition metals?

A
Low melting point
B
Low density
C
Non-metallic nature
D
High conductivity

Question 33Single Answer

Which oxidation state is common for transition metals?

A
Fixed
B
Negative only
C
Zero only
D
Variable

Question 34Single Answer

Which compound contains coordination bond?

A
NaCl
B
NH₃
C
H₂O
D
[Cu(NH₃)₄]²⁺

Question 35Single Answer

Ligands are?

A
Metal ions
B
Neutral atoms
C
Electron acceptors
D
Electron donors

Question 36Single Answer

Coordination number refers to?

A
Number of ligands attached
B
Number of bonds
C
Number of electrons
D
Number of atoms

Question 37Single Answer

Which ligand is monodentate?

A
EDTA
B
NH₃
C
Oxalate
D
En

Question 38Single Answer

Which ligand is bidentate?

A
Oxalate
B
H₂O
C
NH₃
D
Cl⁻

Question 39Single Answer

Which color arises in transition metals due to?

A
s-electrons
B
Nuclear charge
C
p-orbitals
D
d-d transitions

Question 40Single Answer

Which property makes transition metals useful as catalysts?

A
Variable oxidation states
B
Low density
C
High electronegativity
D
Large size

Question 41Single Answer

Which block contains alkali metals?

A
p-block
B
s-block
C
d-block
D
f-block

Question 42Single Answer

Which block contains noble gases?

A
p-block
B
s-block
C
d-block
D
f-block

Question 43Single Answer

Which element shows maximum ionization energy?

A
Na
B
Ne
C
Cl
D
Mg

Question 44Single Answer

Which trend is observed in atomic size across period?

A
Increase
B
Irregular
C
Constant
D
Decrease

Question 45Single Answer

Which type of bond exists in coordination compounds?

A
Ionic
B
Covalent
C
Metallic
D
Coordinate covalent

Question 46Single Answer

Which ion forms colored compounds?

A
Na⁺
B
Ca²⁺
C
Fe³⁺
D
Mg²⁺

Question 47Single Answer

Which ligand has highest denticity?

A
NH₃
B
EDTA
C
Cl⁻
D
H₂O

Question 48Single Answer

Which factor affects crystal field splitting?

A
Pressure
B
Temperature
C
Ligand strength
D
Density

Question 49Single Answer

Which geometry is common in coordination number 6?

A
Octahedral
B
Tetrahedral
C
Linear
D
Square planar

Question 50Single Answer

Which metal commonly forms coordination complexes in coal minerals?

A
Sodium
B
Potassium
C
Iron
D
Calcium

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Subject Knowledge

Question 51Single Answer

Which intermediate is most stable among carbocations?

A
Primary
B
Secondary
C
Tertiary
D
Methyl

Question 52Single Answer

Which factor stabilizes free radicals?

A
Hyperconjugation
B
Inductive effect
C
Electronegativity
D
Ionic bonding

Question 53Single Answer

Which reaction proceeds via free radical mechanism?

A
Electrophilic substitution
B
Nucleophilic substitution
C
Halogenation of alkanes
D
Elimination

Question 54Single Answer

Which solvent favors SN1 mechanism?

A
Non-polar solvent
B
Polar protic solvent
C
Polar aprotic solvent
D
Inert solvent

Question 55Single Answer

Which solvent favors SN2 mechanism?

A
Polar protic
B
Non-polar
C
Polar aprotic
D
Acidic

Question 56Single Answer

Which type of elimination occurs in two steps?

A
E2
B
E1
C
SN1
D
SN2

Question 57Single Answer

Which elimination is a single-step mechanism?

A
E1
B
E2
C
SN1
D
Addition

Question 58Single Answer

Which compound shows highest acidity?

A
Alkyne
B
Alkene
C
Alkane
D
Aromatic compound

Question 59Single Answer

Which factor increases acidity of hydrocarbons?

A
sp hybridization
B
sp² hybridization
C
sp³ hybridization
D
Ionic bonding

Question 60Single Answer

Which reagent is strong nucleophile?

A
H₂O
B
NH₃
C
OH⁻
D
CH₃OH

Mental ability/Quantitative ability logical & reasoning skill

Question 61Single Answer

How many such pairs of letters are there in the word ‘CLEANLINESS’ each of the which has as many letters between them in the word as they have in the English alphabet, in the same sequence?

A
Two
B
Three
C
Five
D
Four
E
None of these

Question 62Single Answer

Team A has scored more goals than Team B
Team C has scored fewer goals than Team B
Team A has scored fewer goals than Team C .
If the first two statements are true, the third statement is

A
True
B
False
C
Uncertain
D
None

Question 63Single Answer

If it is possible to make only one meaningful word with the second, the third, the sixth and the eight letters of the word FRAGMENT using each only once, which of the following will be the third letter of that word ? If no such word can be formed, give ‘X’ as the answer and if more than one such word can be formed, give ‘Y’ as the answer.

Question 64Single Answer

How many such letters are there in the word ORIENTAL each of which is as far away from the beginning of the word as when they are arranged alphabetically?

A
None
B
One
C
Two
D
Three
E
More than three

Question 65Single Answer

How many such pairs of letters in the word CREDIT each of which has as many letters between them in the word as in the English alphabet?

A
None
B
One
C
Two
D
Three
E
More than three

Question 66Single Answer

Passage :

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z .

Which letter in this alphabet is the eighth letter to the right of the letter and which is tenth letter to the left of the last but one letter of the alphabet ?

Question 67Single Answer

Passage :

Direction : The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)

If the third alphabet of each of the words is changed to the next alphabet in the English alphabetical series, which of the following will form a meaningful English word?

A
SUM
B
BIG
C
Both BIG and THE
D
FOR
E
Both FOR and BIG

Question 68Single Answer

Passage :

Direction : The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)

If the given words are arranged in the order as they would appear in a dictionary from left to right, which of the following will be second from the right ?

A
AND
B
FOR
C
THE
D
BIG
E
SUM

Question 69Single Answer

Passage :

Direction: The following question is based on the five words given below:
AND FOR THE BIG SUM (The new words formed after performing the mentioned operations may or may not necessarily the meaningful English words.)

If second alphabet in each of the words is changed to next alphabet in the English alphabetical order, how many words having two vowels (same or different vowels) will be formed ?

A
None
B
One
C
Two
D
Three
E
Four

Question 70Single Answer

Passage :

How many letters are there in the English alphabetical series between the second letter of the word which is second from the right and the second letter of the word which is second from the left of the given words?

A
Two
B
Five
C
Six
D
Nine
E
Three

Question 71Single Answer

The cash difference between the selling prices of an article at a profit of 4% and 6% is Rs. 3. The ratio of the two selling prices is:__________ ?

A
51:52
B
52:53
C
51:53
D
52:55

Question 72Single Answer

Which of the following numbers is irrational ?

A
√49
B
0.125
C
√2
D
22/7

Question 73Single Answer

356 x 936 – 356 x 836 = ?

A
35600
B
34500
C
9630
D
93600

Question 74Single Answer

Arrange in descending order: 5/8, 7/10, 3/4

A
3/4 > 7/10 > 5/8
B
7/10 > 3/4 > 5/8
C
3/4 > 5/8 > 7/10
D
5/8 > 7/10 > 3/4

Question 75Single Answer

What is (3^{^}{4} times 9^{^}{2}) ?

A
3⁶
B
3⁸
C
3¹⁰
D
9⁶

Question 76Single Answer

Passage :

Direction : Each of the questions below consists of a question and two statements numbered (I) and (II) given below it. You have to decide whether the data provided in the statements are sufficient to answer the question. Read both the statements and give answer :

How many employees of bank ‘X’ opted for VRS ?
(I) 18% of the 950 officer cadre employees and 6% of the 1100 of all other cadre employees opted for VRS.
(II) 28% of the employees in the age group of 51 to 56 and 17% of the employees in all other age groups opted for VRS.

A
Statement (I) ALONE is sufficient, but statement (II) alone is not sufficient
B
Statement (II) ALONE is sufficient, but statement (I) alone is not sufficient
C
BOTH statements TOGETHER are sufficient, but NEITHER statement alone is sufficient
D
EACH statement ALONE is sufficient

Question 77Single Answer

Passage :

The area of a playground is 1600 square meters. What is its perimeter ?
(I) It is a perfect square playground
(II) It costs Rs.3200 to put a fence around the playground at the rate of Rs.20 per meter.

A
Statement (I) ALONE is sufficient, but statement (II) alone is not sufficient
B
Statement (II) ALONE is sufficient, but statement (I) alone is not sufficient
C
BOTH statements TOGETHER are sufficient, but NEITHER statement alone is sufficient
D
EACH statement ALONE is sufficient

Question 78Single Answer

Passage :

What is the value of m – n ÷ 37 ?
(I) m is the largest possible six-digit number and n is the smallest possible six-digit number.
(II) The difference between m and n is known.

A
Statement (I) ALONE is sufficient, but statement (II) alone is not sufficient
B
Statement (II) ALONE is sufficient, but statement (I) alone is not sufficient
C
BOTH statements TOGETHER are sufficient, but NEITHER statement alone is sufficient
D
EACH statement ALONE is sufficient

Question 79Single Answer

Passage :

What is the value of x ?
(I) If 10 is added to x, the result is 34.
(II) If x is multiplied by y, the result is 38.

A
Statement (I) ALONE is sufficient, but statement (II) alone is not sufficient
B
Statement (II) ALONE is sufficient, but statement (I) alone is not sufficient
C
BOTH statements TOGETHER are sufficient, but NEITHER statement alone is sufficient
D
EACH statement ALONE is sufficient

Question 80Single Answer

Passage :

What was the total compound interest on a sum after three years ?
(I) The interest after one year was Rs. 100 and the sum after was Rs.1000.
(II) The difference between simple and compound interest on a sum of Rs.1000 at the end of two years was Rs.10.

A
Statement (I) ALONE is sufficient, but statement (II) alone is not sufficient
B
Statement (II) ALONE is sufficient, but statement (I) alone is not sufficient
C
BOTH statements TOGETHER are sufficient, but NEITHER statement alone is sufficient
D
EACH statement ALONE is sufficient

General Awareness & Knowledge regarding CIL/SECL

Question 81Single Answer

Sattriya dance form is famous in which of these states ?

A
Assam
B
Himachal Pradesh
C
Punjab
D
Tamil Nadu

Question 82Single Answer

"Who said, 'India was a parrot unto itself'?

A
Malik Muhammad Joyce
B
Raskhan
C
Rich Khusrow
D
Rich Hasan

Question 83Single Answer

Which is the national game of Bhutan ?

A
badminton
B
basketball
C
football
D
archery

Question 84Single Answer

When was the Constituent Assembly of India formed?

A
1946
B
1947
C
1948
D
1950

Question 85Single Answer

Who is known as the "Father of the Indian Renaissance" ?

A
Raja Ram Mohan Roy
B
Swami Vivekananda
C
Rabindranath Tagore
D
Mahatma Gandhi

Question 86Single Answer

What is the study of ethics primarily concerned with ?

A
Economic behavior
B
Human values and moral principles
C
Physical health
D
Political systems

Question 87Single Answer

Who is known as the "Missile Man of India"?

A
Dr. Homi J. Bhabha
B
Dr. Vikram Sarabhai
C
Dr. APJ Abdul Kalam
D
Dr. Satish Dhawan

Question 88Single Answer

Which is the longest river in India?

A
Yamuna
B
Ganges
C
Brahmaputra
D
Godavari

Question 89Single Answer

Who among the following was associated with Enlightenment philosophy?

A
Voltaire
B
Shakespeare
C
Erasmus
D
All of the above

Question 90Single Answer

Ventilation in mines is necessary to?

A
Roof support only
B
Coal transport only
C
Dust suppression only
D
Dilute firedamp and remove noxious gases

Question 91Single Answer

Main purpose of booster fans is?

A
Roof support only
B
Coal transport only
C
Dust suppression only
D
Maintain airflow in obstructed or long airways

Question 92Single Answer

Air regulators help to?

A
Balance pressure and airflow in mines
B
Coal transport only
C
Dust suppression only
D
Roof support only

Question 93Single Answer

Air doors are used to?

A
Dust suppression only
B
Coal transport only
C
Direct airflow to working faces
D
Roof support only

Question 94Single Answer

Anemometer is used to measure?

A
Coal transport only
B
Air velocity
C
Dust suppression only
D
Roof support only

Question 95Single Answer

Hygrometer measures?

A
Dust suppression only
B
Coal transport only
C
Moisture in air
D
Roof support only

Question 96Single Answer

Flame safety lamps indicate?

A
Roof support only
B
Coal transport only
C
Dust suppression only
D
Presence of methane and flammable gases

Question 97Single Answer

Electric safety lamps are preferred because?

A
Roof support only
B
Coal transport only
C
Dust suppression only
D
Safe in explosive atmosphere and provide illumination

Question 98Single Answer

Coal dust explosion can be prevented by?

A
Coal transport only
B
Stone dusting, ventilation, and water sprays
C
Dust suppression only
D
Roof support only

Question 99Single Answer

Stone dust in mines should be?

A
Roof support only
B
Coal transport only
C
Dust suppression only
D
Non-combustible and inert

Question 100Single Answer

What astronomical discovery was announced by astronomers in March 2026?

A
New planet in solar system
B
Discovery related to 1,900 light-years away (specific object)
C
Black hole merger
D
Exoplanet with life signs

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Latest SECL Junior Technical Inspector Exam Question (Objective Questions), MCQ in English

Subject Knowledge

SECL Junior Technical Inspector Exam Online Question Bank Package

Subject Knowledge

Mental ability/Quantitative ability logical & reasoning skill

General Awareness & Knowledge regarding CIL/SECL

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