13 Sep 100 SSC CHSL MCQ (Multiple Choice Questions) with Answers
Section 1: General Awareness (Q1 – Q25)
1) Which amendment to the Indian Constitution reduced the voting age from 21 to 18 years?
Show Answer
Answer: c
Explanation
The 61st Constitutional Amendment Act, 1988 reduced the voting age from 21 to 18 years.
2) The Battle of Plassey was fought in which year?
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Answer: a
Explanation
The Battle of Plassey was fought in 1757 between the British East India Company and Nawab Siraj-ud-Daulah of Bengal.
3) Which river is known as the “Sorrow of Bengal”?
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Answer: b
Explanation
The Damodar River is known as the “Sorrow of Bengal” due to its frequent floods.
4) Who among the following was the founder of the Slave Dynasty in India?
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Answer: c
Explanation
Qutb-ud-din Aibak founded the Slave Dynasty (Mamluk Dynasty) in 1206.
5) Which part of the Indian Constitution deals with Fundamental Rights?
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Answer: b
Explanation
Part III of the Indian Constitution (Articles 12–35) deals with Fundamental Rights.
6) The SI unit of electric current is:
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Answer: c
Explanation
The SI unit of electric current is the Ampere (A).
7) Which gas is present in the maximum amount in Earth’s atmosphere?
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Answer: c
Explanation
Nitrogen makes up about 78% of Earth’s atmosphere, the highest among all gases.
8) “Panchayati Raj” was first introduced in which Indian state?
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Answer: a
Explanation
Panchayati Raj was first introduced in Rajasthan on 2 October 1959 in Nagaur district.
9) Who wrote the famous book ‘Indica’?
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Answer: b
Explanation
‘Indica’ was written by Megasthenes, the Greek ambassador to the court of Chandragupta Maurya.
10) The Tropic of Cancer does NOT pass through which of the following Indian states?
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Answer: c
Explanation
The Tropic of Cancer passes through Rajasthan, Tripura and Mizoram, but not through Odisha.
11) Which organ in the human body produces insulin?
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Answer: b
Explanation
Insulin is produced by the beta cells of the pancreas.
12) What is the pH value of pure water?
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Answer: b
Explanation
Pure water is neutral and has a pH of 7.
13) Which planet is known as the “Red Planet”?
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Answer: b
Explanation
Mars is called the Red Planet because of iron oxide (rust) on its surface.
14) The Classical Dance form ‘Sattriya’ belongs to which state?
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Answer: c
Explanation
Sattriya is a classical dance form from Assam.
15) Which acid is found in ant stings?
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Answer: c
Explanation
Ant stings contain formic acid, which causes irritation.
16) Who was the first Governor-General of independent India?
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Answer: a
Explanation
Lord Mountbatten was the first Governor-General of independent India (1947–48).
17) Which organelle is known as the “Powerhouse of the Cell”?
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Answer: c
Explanation
Mitochondria are called the powerhouse of the cell because they produce ATP energy.
18) National Income in India is calculated by which organization?
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Answer: c
Explanation
National Income is calculated by the National Statistical Office (NSO).
19) The Kaziranga National Park is famous for which animal?
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Answer: b
Explanation
Kaziranga National Park in Assam is famous for the one-horned rhinoceros.
20) Chemical formula of Baking Soda is:
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Answer: b
Explanation
Baking soda is sodium bicarbonate, with the chemical formula NaHCO₃.
21) Who was the founder of the Brahmo Samaj?
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Answer: b
Explanation
Brahmo Samaj was founded by Raja Ram Mohan Roy in 1828.
22) Which layer of the atmosphere contains the ozone layer?
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Answer: b
Explanation
The ozone layer is found in the stratosphere, which protects Earth from harmful UV rays.
23) The term ‘Grand Slam’ is associated with which sport?
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Answer: b
Explanation
The term ‘Grand Slam’ is associated with Lawn Tennis (Australian Open, French Open, Wimbledon, US Open).
24) Which Article of the Constitution abolishes Untouchability?
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Answer: c
Explanation
Article 17 of the Indian Constitution abolishes untouchability.
25) Who discovered Penicillin?
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Answer: b
Explanation
Alexander Fleming discovered penicillin in 1928.
Section 2: Quantitative Aptitude (Q26 – Q50)
26) If the ratio of two numbers is 3:4 and their HCF is 4, what is their LCM?
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Answer: d
Explanation
Numbers are 3×4=12 and 4×4=16. LCM of 12 and 16 is 48.
27) An item is sold for ₹450 at a loss of 10%. What should be the selling price to gain 20%?
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Answer: c
Explanation
CP = 450 / 0.9 = ₹500. For 20% gain, SP = 500 × 1.20 = ₹600.
28) The average of five consecutive even numbers is 24. What is the largest number?
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Answer: c
Explanation
The numbers are 20, 22, 24, 26, 28. The largest is 28.
29) A train 150 meters long passes a pole in 15 seconds. What is the speed of the train in km/h?
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Answer: a
Explanation
Speed = 150/15 = 10 m/s = 10 × 18/5 = 36 km/h.
30) If A:B = 2:3 and B:C = 4:5, what is A:B:C?
Show Answer
Answer: a
Explanation
A:B = 2:3 = 8:12; B:C = 4:5 = 12:15. So A:B:C = 8:12:15.
31) What will be the simple interest on ₹5,000 at 8% per annum for 3 years?
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Answer: b
Explanation
SI = 5000 × 8 × 3 / 100 = ₹1,200.
32) A can complete a work in 10 days and B in 15 days. Working together, how many days will they take?
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Answer: b
Explanation
Combined one-day work = 1/10 + 1/15 = 1/6. So they finish in 6 days.
33) Find the value of sin(30°) + cos(60°).
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Answer: c
Explanation
sin 30° = 1/2 and cos 60° = 1/2. Sum = 1.
34) The perimeter of a square is 48 cm. What is its area?
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Answer: a
Explanation
Side = 48/4 = 12 cm. Area = 12² = 144 cm².
35) If x + 1/x = 4, find the value of x² + 1/x².
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Answer: a
Explanation
(x + 1/x)² = x² + 2 + 1/x². So 16 = x² + 2 + 1/x², hence x² + 1/x² = 14.
36) A shopkeeper marks an article 20% above CP and allows a discount of 10%. What is his profit percentage?
Show Answer
Answer: b
Explanation
Let CP = 100. MP = 120. SP = 120 × 0.9 = 108. Profit = 8%.
37) What is the compound interest on ₹10,000 at 10% per annum for 2 years compounded annually?
Show Answer
Answer: b
Explanation
Amount = 10000(1.1)² = 12100. CI = 12100 − 10000 = ₹2,100.
38) The diagonal of a rectangle is 10 cm and its breadth is 6 cm. Find its area.
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Answer: a
Explanation
Length = √(10² − 6²) = 8 cm. Area = 8 × 6 = 48 cm².
39) If the circumference of a circle is 44 cm, what is its radius? (Ï€ = 22/7)
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Answer: a
Explanation
2πr = 44 ⇒ 2 × 22/7 × r = 44 ⇒ r = 7 cm.
40) What is the mean proportional between 9 and 25?
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Answer: b
Explanation
Mean proportional = √(9 × 25) = √225 = 15.
41) The population of a town increases by 10% annually. If the current population is 10,000, what will it be after 2 years?
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Answer: b
Explanation
Population = 10000 × (1.1)² = 10000 × 1.21 = 12,100.
42) If a + b = 7 and ab = 12, find the value of a² + b².
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Answer: a
Explanation
a² + b² = (a + b)² − 2ab = 49 − 24 = 25.
43) The ratio of copper and zinc in an alloy is 5:2. If the weight of copper is 20 kg, what is the weight of zinc?
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Answer: b
Explanation
5 parts = 20 kg ⇒ 1 part = 4 kg. Zinc = 2 parts = 8 kg.
44) A car covers 300 km in 5 hours. What is its speed in m/s?
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Answer: a
Explanation
Speed = 300/5 = 60 km/h = 60 × 5/18 = 16.67 m/s.
45) The volume of a cube is 125 cm³. What is its total surface area?
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Answer: a
Explanation
Side = ∛125 = 5 cm. Total surface area = 6 × 5² = 150 cm².
46) If 15 men can build a wall in 8 days, how many men are needed to build it in 6 days?
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Answer: b
Explanation
Total work = 15 × 8 = 120 man-days. Men needed = 120/6 = 20.
47) Simplify: 50 – [20 + {15 – (8 – 3)}].
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Answer: a
Explanation
50 − [20 + {15 − 5}] = 50 − [20 + 10] = 50 − 30 = 20.
48) An article is bought for ₹800 and sold for ₹960. Find the profit percentage.
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Answer: b
Explanation
Profit = 960 − 800 = 160. Profit% = 160/800 × 100 = 20%.
49) The median of the numbers 5, 2, 9, 7, 3 is:
Show Answer
Answer: b
Explanation
Arranged: 2, 3, 5, 7, 9. Median is the middle value, 5.
50) A tap can fill a tank in 4 hours. Another tap can empty it in 6 hours. If both are opened together, how long will it take to fill the tank?
Show Answer
Answer: b
Explanation
Net rate = 1/4 − 1/6 = 1/12. So the tank fills in 12 hours.
Section 3: General Intelligence & Reasoning (Q51 – Q75)
51) Select the related word: Doctor : Hospital :: Teacher : ?
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Answer: b
Explanation
A doctor works in a hospital; a teacher works in a school.
52) Find the odd one out:
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Answer: d
Explanation
Copper, silver and gold are pure metals; brass is an alloy.
53) Complete the series: 2, 6, 12, 20, 30, ?
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Answer: b
Explanation
Differences are 4, 6, 8, 10; next difference is 12. So 30 + 12 = 42.
54) If CAT is coded as 3120, how is DOG coded?
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Answer: a
Explanation
Letters are coded by their alphabet positions: D=4, O=15, G=7 ⇒ 4157.
55) A is B’s brother. C is A’s mother. D is C’s father. How is B related to D?
Show Answer
Answer: b
Explanation
C is B’s mother and D is C’s father, so B is D’s grandchild.
56) Pointing to a photograph, a man said, “She is the daughter of my grandfather’s only son.” How is the woman in the photograph related to the man?
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Answer: b
Explanation
Grandfather’s only son is the man’s father. The daughter of the man’s father is his sister.
57) Arrange in logical sequence: 1. Country, 2. Village, 3. State, 4. District
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Answer: a
Explanation
From smallest to largest: Village → District → State → Country (2, 4, 3, 1).
58) Complete the series: A, C, F, J, O, ?
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Answer: b
Explanation
Positions: A(+2)=C, C(+3)=F, F(+4)=J, J(+5)=O, O(+6)=U.
59) If ‘+’ means ‘×’, ‘-‘ means ‘÷’, ‘×’ means ‘+’ and ‘÷’ means ‘-‘, solve: 12 + 4 – 2 × 6 ÷ 3.
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Answer: a
Explanation
After substitution: 12 × 4 ÷ 2 + 6 − 3 = 24 + 6 − 3 = 27.
60) Select the odd pair:
Show Answer
Answer: c
Explanation
The capital of France is Paris, not Lyon.
61) If PRIDE is written as 16-18-9-4-5, how will PEACE be written?
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Answer: a
Explanation
Letters are coded by alphabet positions: P=16, E=5, A=1, C=3, E=5 ⇒ 16-5-1-3-5.
62) In a row of 30 students, Rahul is 10th from the left. What is his rank from the right end?
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Answer: b
Explanation
Rank from right = 30 − 10 + 1 = 21st.
63) Find the missing number: 4, 9, 16, 25, 36, ?
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Answer: b
Explanation
The series is squares: 2², 3², 4², 5², 6², so next is 7² = 49.
64) Statements: All dogs are cats. All cats are lions.
Conclusions:
I. All dogs are lions.
II. Some lions are cats.
Conclusions:
I. All dogs are lions.
II. Some lions are cats.
Show Answer
Answer: c
Explanation
All dogs are cats and all cats are lions, so all dogs are lions. Also, since all cats are lions, some lions are definitely cats.
65) Which word CANNOT be formed from the letters of “RECOMMENDATION”?
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Answer: c
Explanation
As per the answer key, MONITOR is treated as the word that cannot be formed from the letters of RECOMMENDATION.
66) If South-East becomes North, North-East becomes West, what will West become?
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Answer: b
Explanation
The directions are rotated 135° anti-clockwise. West becomes South-East.
67) Find the odd number out: 27, 64, 125, 144
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Answer: d
Explanation
27 = 3³, 64 = 4³, 125 = 5³, but 144 = 12², not a perfect cube.
68) Complete the pattern: 3, 5, 9, 17, 33, ?
Show Answer
Answer: a
Explanation
Each term is previous × 2 − 1: 33 × 2 − 1 = 65.
69) A man walks 5 km North, turns right and walks 3 km, turns right again and walks 5 km. How far is he from his starting point?
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Answer: b
Explanation
He ends up 3 km east of the starting point.
70) Select the mirror image of “REASON” (mirror placed on the right):
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Answer: b
Explanation
In a mirror placed on the right, the word is reversed and letters are laterally inverted.
71) If 1st January 2023 was Sunday, what day of the week was 1st January 2024?
Show Answer
Answer: b
Explanation
2023 is a non-leap year, so 1st Jan 2024 is one day after Sunday, i.e. Monday.
72) Find the missing letter: B, D, G, K, P, ?
Show Answer
Answer: a
Explanation
Positions: B(+2)=D, D(+3)=G, G(+4)=K, K(+5)=P, P(+6)=V.
73) If EARTH is written as FCUXM, how is MOON written in that code?
Show Answer
Answer: b
Explanation
Using the same +1, +2, +3, +4 letter shifts, MOON is coded as NQRT as per the answer key.
74) Select the related number: 7 : 56 :: 9 : ?
Show Answer
Answer: b
Explanation
7 × 8 = 56. Similarly, 9 × 10 = 90.
75) How many triangles are there in a standard 4-pointed star / pentagram structure?
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Answer: b
Explanation
A standard pentagram contains 10 triangles when all combinations are counted.
Section 4: English Language (Q76 – Q100)
76) Choose the correct synonym for “ABANDON”:
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Answer: b
Explanation
Abandon means to forsake or give up completely.
77) Choose the correct antonym for “TRANSPARENT”:
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Answer: b
Explanation
Transparent means allowing light through; opaque means not allowing light through.
78) Spot the error: “He is one of the best boy in the class.”
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Answer: c
Explanation
“One of the” is followed by a plural noun, so it should be “best boys”.
79) Fill in the blank: She has been living in this city _____ 2015.
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Answer: b
Explanation
“Since” is used with a specific point of time in the past.
80) Select the correctly spelt word:
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Answer: b
Explanation
The correct spelling is “Accommodation” (double c, double m).
81) One-word substitution: “A person who collects or studies stamps.”
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Answer: b
Explanation
A philatelist collects or studies stamps.
82) Idiom Meaning: “To spill the beans”
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Answer: b
Explanation
“To spill the beans” means to reveal a secret.
83) Change to Passive Voice: “The boy kicked the ball.”
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Answer: b
Explanation
Simple past active becomes simple past passive: “The ball was kicked by the boy.”
84) Choose the correct synonym for “CANDID”:
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Answer: a
Explanation
Candid means frank, open or honest.
85) Fill in the blank: Neither John nor his friends _____ present at the party.
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Answer: b
Explanation
With “neither…nor”, the verb agrees with the nearer subject. “Friends” is plural, so “were” is correct.
86) Choose the correct antonym for “EXPAND”:
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Answer: a
Explanation
Expand means to increase in size; contract means to decrease in size.
87) One-word substitution: “One who does not believe in the existence of God.”
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Answer: b
Explanation
An atheist does not believe in the existence of God.
88) Idiom Meaning: “At the eleventh hour”
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Answer: b
Explanation
“At the eleventh hour” means at the last possible moment.
89) Spot the error: “Neither of the two plans are practical.”
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Answer: c
Explanation
“Neither” is singular, so it should be “is practical”.
90) Fill in the blank: The sun _____ in the east.
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Answer: c
Explanation
Simple present tense is used for universal truths: “The sun rises in the east.”
91) Select the correctly spelt word:
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Answer: b
Explanation
The correct spelling is “Separate”.
92) Choose the correct synonym for “DILIGENT”:
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Answer: b
Explanation
Diligent means hardworking and careful.
93) One-word substitution: “A life history of a person written by himself.”
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Answer: b
Explanation
An autobiography is a life history written by the person himself/herself.
94) Change to Indirect Speech: He said, “I am writing a letter.”
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Answer: a
Explanation
Past reporting verb “said” changes present continuous to past continuous: “He said that he was writing a letter.”
95) Idiom Meaning: “Burn the midnight oil”
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Answer: b
Explanation
“Burn the midnight oil” means to work late into the night.
96) Choose the correct antonym for “HOSTILE”:
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Answer: a
Explanation
Hostile means unfriendly; its antonym is friendly.
97) Spot the error: “She is senior than me in service.”
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Answer: b
Explanation
“Senior” takes “to”, not “than”. It should be “senior to me”.
98) Fill in the blank: If I _____ a king, I would help the poor.
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Answer: c
Explanation
This is a second conditional (unreal present), so “were” is used with all subjects.
99) One-word substitution: “A government by the people, of the people, for the people.”
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Answer: c
Explanation
Democracy is a government by the people, of the people and for the people.
100) Choose the correct synonym for “FRAGILE”:
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Answer: b
Explanation
Fragile means delicate or easily broken.
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