To excel in the OSSSC RI, ARI, and AMIN exams, mastering key topics in reasoning, mathematics, and general knowledge is crucial. Focus on reasoning questions covering series, analogy, coding-decoding, order and ranking, and analytical ability. Practice complex arithmetic problems, time and work, percentages, and number systems for mathematics. General knowledge preparation should include current events, Indian history, geography, and significant government schemes. Additionally, time management, accuracy, and mock tests will enhance your exam readiness. These are essential for boosting your confidence and performance in the competitive exam.
Top Questions to Master Before the Test for OSSSC RI, ARI, AMIN
- If 4 + 3 = 19, 5 + 4 = 29, then 6 + 5 = ?
(a) 56
(b) 61
(c) 41
(d) 51
Ans: (c) 41
Sol: The pattern follows: (a + (b) = a^2 + b. - If CAT is coded as 3120, then how will DOG be coded?
(a) 5147
(b) 4157
(c) 5137
(d) 3157
Ans: (b) 4157
Sol: The letters are coded based on their positions in the English alphabet. - If the day after tomorrow is Thursday, what day will it be three days from now?
(a) Sunday
(b) Friday
(c) Tuesday
(d) Wednesday
Ans: (b) Friday
Sol: If the day after tomorrow is Thursday, then today is Tuesday.To find out what day it will be three days from now, we can count forward from Tuesday: Wednesday, Thursday, Friday.So, three days from now will be Friday. - If a clock shows 2:30, what is the angle between the hour hand and the minute hand?
(a) 45°
(b) 105°
(c) 90°
(d) 120°
Ans: (b) 105°
Explanation:To find the angle between the hour hand and the minute hand of a clock at 2:30, we can use the following formula:
Angle = |(30*H – (11/2)*M)|
Where:
- H is the current hour (in 24-hour format)
- M is the current minute
For 2:30, H = 2 and M = 30.
So, the angle = |(30*2 – (11/2)*30)| = |(60 – 165)| = 105 degrees.
Therefore, the angle between the hour hand and the minute hand of the clock at 2:30 is 105 degrees
- If the pattern is 3, 6, 9, 12, ___, what is the next number?
(a) 14
(b) 15
(c) 18
(d) 21
Answer.(b) 15 Sol: Each number is incremented by 3. - If a + b = 10 and a – b = 4, what is the value of a?
(a) 3
(b) 7
(c) 5
(d) 6
Ans: (b) 7
Sol: By solving the equations, a = 7 and b = 3. - If the pattern is 5, 10, 15, 20, ___, what is the next number?
(a) 22
(b) 25
(c) 24
(d) 21
Ans: (b) 25
Sol: Each number is incremented by 5. - Odometer is to mileage as compass is to:
(a) speed
(b) hiking
(c) needle
(d) direction
Ans: (d) direction
Sol: An odometer measures mileage, similarly, a compass is used to determine direction. - Marathon is to race as hibernation is to:
(a) winter
(b) bear
(c) dream
(d) sleep
Ans: (d) sleep
Sol: A marathon is a type of race, similarly, hibernation is a type of sleep. - Window is to pane as book is to:
(a) novel
(b) glass
(c) cover
(d) page
Ans: (d) page
Sol: A window is made up of panes, similarly, a book is made up of pages. - କେଉଁଟି ଶୁଦ୍ଧ ରୂପ ଚିହ୍ନଟ କର ?
(a) ବୁଦ୍ଧିମତା
(b) ବୁଦ୍ଧିମତ
(c) ବୁଦ୍ଧିମତ୍ତା
(d) ବୁଦ୍ଧିମତ୍ତ
Answer : (c) ବୁଦ୍ଧିମତ୍ତା - କେଉଁଟି ଶୁଦ୍ଧ ରୂପ ଚିହ୍ନଟ କର ?
(a) ବିପଦଜନକ
(b) ବିପଜ୍ନକ
(c) ବିପଜ୍ଜନକ
(d) ବିପଦଜ୍ଜନକ
Answer : (c) ବିପଜ୍ଜନକ - ସରଳ ବାକ୍ୟକୁ ଯୌଗିକ ବାକ୍ୟ ରେ ପରିଣତ କର ?ସେ ଭୁଲ କରିବାରୁ ଅପମାନ ପାଇଲା ।(a)ସେ ଭୁଲ କଲା ଏବଂ ଅପମାନ ପାଇଲା ।(b) ସେ ଭୁଲ କଲା ତେଣୁ ଅପମାନ ପାଇଲା ।
(c) ଯେହେତୁ ସେ ଭୁଲ କଲା ଏବଂ ଅପମାନ ପାଇଲା ।
(d) ଯେହେତୁ ସେ ଭୁଲ କଲା ସେଥିପାଇଁ ଅପମାନ ପାଇଲା ।
Answer : (a)ସେ ଭୁଲ କଲା ଏବଂ ଅପମାନ ପାଇଲା ।
- ଯୌଗିକ ବାକ୍ୟକୁ ସରଳ ବାକ୍ୟ ରେ ପରିଣତ କର ?ସୌମେନ୍ଦ୍ର ସତ୍ୟ କହେ; ମାତ୍ର ଅପ୍ରିୟ ସତ୍ୟ କହେ ନାହିଁ ।(a)ସୌମ୍ୟୋନ୍ଦ୍ର ସତ୍ୟ କହିଲେ ହେଁ ଅପ୍ରିୟ ସତ୍ୟ କହେ ନାହିଁ ।(b) ସୌମ୍ୟୋନ୍ଦ୍ର ସତ୍ୟ କହେ କିନ୍ତୁ ଅପ୍ରିୟ ସତ୍ୟ କହେ ନାହିଁ ।
(c) ସୌମ୍ୟୋନ୍ଦ୍ର ସତ୍ୟ କହେ ତେଣୁ ଅପ୍ରିୟ ସତ୍ୟ କହେ ନାହିଁ ।
(d) ସୌମ୍ୟୋନ୍ଦ୍ର ସତ୍ୟ କହେ କିନ୍ତୁ ଅପ୍ରିୟ ସତ୍ୟ ମଧ୍ୟ କହେ ନାହିଁ ।
Answer : (a)ସୌମ୍ୟୋନ୍ଦ୍ର ସତ୍ୟ କହିଲେ ହେଁ ଅପ୍ରିୟ ସତ୍ୟ କହେ ନାହିଁ ।
- କେଉଁଟି ଏକ ତଦଭବ ଶବ୍ଦ ?(a)ଅଗ୍ନି(b) ଅଝଟ(c) ଖଡ଼ୁ
(d) ଅଗାଡ଼ି
Answer : (a)ଅଗ୍ନି
- କେଉଁଟି ଏକ ତତ୍ସମ ଶବ୍ଦ ?(a) ସନ୍ୟାସୀ(b) ଅଝଟ(c) ଖଡ଼ୁ
(d) ଅଗାଡ଼ି
Answer : (a) ସନ୍ୟାସୀ
- “ତିଳକୁ ତାଲା କରିବା” ରୂଢି ର ଅର୍ଥ କଣ?
(a)ଅନିଷ୍ଟ କରିବା
(b)ଛୋଟ କଥା କୁ ବଡ କରିବା
(c)ଅଭ୍ୟସ୍ତ ହେବା
(d):ବିରକ୍ତି ପ୍ରକାଶ କରିବା
Answer : (b)ଛୋଟ କଥା କୁ ବଡ କରିବା - “ତେଲ ମାରିବା” ରୂଢି ର ଅର୍ଥ କଣ?
(a)ଅନିଷ୍ଟ କରିବା
(b)ଛୋଟ କଥା କୁ ବଡ କରିବା
(c)ଅଭ୍ୟସ୍ତ ହେବା
(d)ଖୋସାମତ କରିବା
Answer : (d)ଖୋସାମତ କରିବା - ‘ପଦ୍ମନାଭ’ ଶବ୍ଦଟି କିପରି ସୃଷ୍ଟି ହୋଇଛି?
(a) ପଦ୍ମ ନାଭିରେ ଯାହାଙ୍କର ସେ
(b) ପଦ୍ମ ଲାଭ କରିଛନ୍ତି ଯେ ସେ
(c) ନାଭି ଯାହାର ପଦ୍ମ ପରି ସେ
(d) ନାଭିରୁ ପଦ୍ମ ସୃଷ୍ଟି ଯାହାର ସେ
Ans: (a) ପଦ୍ମ ନାଭିରେ ଯାହାଙ୍କର ସେ - ‘ପ୍ରାପ୍ତି’ ଅର୍ଥରେ ‘ମୟ’ ଶବ୍ଦ ଲଗାଯାଇ ଗତ ଶବ୍ଦଟିକୁ ବାଛ ।
(a) ବାଢମୟ
(b) ବିଶୁମୟ
(c) ଚିନ୍ମୟ
(d) ସୁଖମୟ
Ans: (d) ସୁଖମୟ - Choose the correct word to fill in the blank: “The cat sat ___ the windowsill.”
(a) on
(b) in
(c) at
(d) by
Ans: (a) on - What is the antonym for “Benevolent”:
(a) Malevolent
(b) Kind
(c) Hostile
(d) Gracious
Ans: (a) Malevolent - Select the synonym for “Ubiquitous”:
(a) Rare
(b) Abundant
(c) Limited
(d) Scarce
Ans: (b) Abundant - Identify the correct sentence:
(a) Me and my friend will attend the party.
(b) My friend and I will attend the party.
(c) My friend and me will attend the party.
(d) I and my friend will attend the party.
Ans: (b) My friend and I will attend the party.
Choose the correct degree: “This is the ____________ mountain in the range.”
(a) High
(b) Higher
(c) Highest
(d) More high
Ans: (c) Highest - Choose the correct sentence:
(a) A elephant is a large mammal.
(b) An elephant is a large mammal.
(c) The elephant is a large mammal.
(d) Elephant is a large mammal.
Ans: (b) An elephant is a large mammal. - Convert the sentence to indirect speech: “She said, ‘I will come tomorrow.'”
(a) She said that she will come tomorrow.
(b) She said that she would come tomorrow.
(c) She said, “I will come tomorrow.”
(d) She said that she comes tomorrow.
Ans: (b) She said that she would come tomorrow. - Arrange the following sentences in the correct order:
1.The sun rose.
2.The birds started chirping.
3.People woke up.
4. Darkness turned into light.
(a) 1, 2, 3, 4
(b) 4, 3, 2, 1
(c) 3, 1, 2, 4
(d) 2, 1, 3, 4
Ans: (a) 1, 2, 3, 4 - Arrange the following sentences to form a coherent paragraph:
1. The sun set over the horizon.
2.The stars began to twinkle in the evening sky.
3. Darkness descended, and the moon cast its silvery glow.
4. People gathered on the beach, enjoying the tranquility.
(a) 1, 2, 3, 4
(b) 4, 3, 2, 1
(c) 2, 1, 3, 4
(d) 3, 4, 2, 1
Ans: (c) 2, 1, 3, 4 - Identify the idiom in the sentence: He spilled the beans about the surprise party.
(a) Spilled the beans
(b) Surprise party
(c) He
(d) About the
Ans: (a) Spilled the beans - Choose the most appropriate word to fill in the blank: The students were asked to ____ their opinions on the proposed changes.
(a) express
(b) suppress
(c) impress
(d) depress
Ans: (a) express. - Question: What is the volume of a cylinder with a radius of 3 cm and height of 10 cm?
Options:
(a) 282.74 cm³
(b) 282.45 cm³
(c) 282.50 cm³
(d) 283.33 cm³
Solution:
Volume of a cylinder = πr²h
= π * 3² * 10
= π * 9 * 10
= 282.74 cm³ (approx)
Ans: (a) 282.74 cm³ - Question: What is the probability of rolling a sum of 7 with two six-sided dice?
Options:
(a) 1/6
(b) 1/9
(c) 1/12
(d) 1/36
Solution:
Possible ways to roll a 7: (1,6), (2,5), (3,4), (4,3), (5,2), (6,1).
There are 6 outcomes out of 36 total outcomes.
Probability = 6 / 36 = 1 / 6
Ans: (a) 1/6 - Question: A can complete a work in 10 days, and B can complete the same work in 15 days. How many days will it take if they work together?
Options:
(a) 6 days
(b) 5 days
(c) 7 days
(d) 8 days
Solution:
Work done by A in one day = 1/10
Work done by B in one day = 1/15
Together, their work per day = 1/10 + 1/15
= 3/30 + 2/30 = 5/30 = 1/6
So, together they will take 6 days to complete the work.
Ans: (a) 6 days - Question: If 3 parts of a mixture contains 2 parts of salt, how much salt would be there in a mixture of 15 parts?
Options:
(a) 5 parts
(b) 6 parts
(c) 7 parts
(d) 10 parts
Solution:
Ratio of salt to mixture = 2/3
Therefore, salt in 15 parts = (2/3) * 15 = 10 parts
Ans: (d) 10 parts - Question: A boat can travel at 12 km/h in still water. If it takes the boat 3 hours to travel 36 km downstream, what is the speed of the stream?
Options:
(a) 3 km/h
(b) 4 km/h
(c) 5 km/h
(d) 6 km/h
Solution:
Speed downstream = Distance / Time
= 36 km / 3 hours = 12 km/h
Boat speed in still water = 12 km/h
Therefore, stream speed = (downstream spee(d) – (still water spee(d)
= 12 km/h – 12 km/h
= 0 km/h
Ans: (a) 3 km/h - Question: What is the simple interest on a principal amount of $800 at an interest rate of 4% per year for 3 years?
Options:
(a) $90
(b) $96
(c) $97
(d) $98
Solution:
Simple interest = Principal * Rate * Time
= $800 * 0.04 * 3
= $96
Ans: (b) $96 - Question: A car travels a distance of 120 km in 2 hours. What is the speed of the car in km/h?
Options:
(a) 50 km/h
(b) 60 km/h
(c) 70 km/h
(d) 80 km/h
Solution:
Speed = Distance / Time
= 120 km / 2 hours
= 60 km/h
Ans: (b) 60 km/h - Question: A train 150 meters long is running at a speed of 60 km/h. How long will it take to pass a 180-meter-long platform?
Options:
(a) 12 seconds
(b) 15 seconds
(c) 18 seconds
(d) 20 seconds
Solution:
Total distance = Length of train + Length of platform
= 150 m + 180 m = 330 m
Speed of the train in m/s = (60 * 1000) / 3600 = 16.67 m/s
Time = Distance / Speed
= 330 m / 16.67 m/s
= 19.8 seconds
Ans: (c) 18 seconds - Question: In 5 years, John’s age will be twice his age 3 years ago. How old is he now?
Options:
(a) 8 years
(b) 10 years
(c) 12 years
(d) 15 years
Ans: (b) 11 years
Solution:
- Question: A 20-liter mixture contains milk and water in the ratio of 3:2. How much water must be added to the mixture to make the ratio 1:1?
Options:
(a) 5 liters
(b) 8 liters
(c) 4 liters
(d) 6 liters
Ans: (c) 4 liters - What is the purpose of a fathometer?
(a) Measuring earthquakes
(b) Measuring rainfall
(c) Measuring ocean depth
(d) Measuring sound intensity
Ans: (c) Measuring ocean depth - What is Epsom, England, associated with?
(a) Snooker
(b) Shooting
(c) Polo
(d) Horse racing
Ans: (d) Horse racing
Who was the fastest shorthand writer?
(a) Dr. G. D. Bist
(b) J.R.D. Tata
(c) J.M. Tagore
(d) Khudada Khan
Ans: (a) Dr. G. D. Bist - Which country does golf player Vijay Singh belong to?
(a) USA
(b) Fiji
(c) India
(d) UK
Ans: (b) Fiji - “One People, One State, One leader” was the policy of
(a) Stalin
(b) Hitler
(c) Lenin
(d) Mussolini
Ans: (b) Hitler
What is the full form of IG in the police department?
Ans: IG stands for Inspector General of Police. - What does DRDL stand for?
(a) Defence Research and Development Laboratory
(b) Department of Research and Development Laboratory
(c) Differential Research and Documentation Laboratory
(d) None of the above
Ans: (a) Defence Research and Development Laboratory - Why does exposure to sunlight help improve health?
(a) The infrared light kills bacteria in the body
(b) Resistance power increases
(c) The pigment cells in the skin get stimulated and produce a healthy tan
(d) The ultraviolet rays convert skin oil into Vitamin D
Ans: (d) The ultraviolet rays convert skin oil into Vitamin D - Where is the headquarters of the registered voluntary association “Transparency International” located?
(a) Helsinki, Finland
(b) Geneva, Switzerland
(c) Berlin, Germany
(d) Paris, France
Ans: (c) Berlin, Germany - Who appoints the Secretary-General of the United Nations Organization?
(a) General Assembly
(b) Security Council
(c) Trusteeship Council
(d) World Bank
Ans: (a) General Assembly - Which company is India considering striking a deal with for sourcing GPUs?
(a) Intel
(b) AMD
(c) Nvidia
(d) Qualcomm
Ans: (c) Nvidia - Who announced the launch of the new artificial intelligence (AI) assistant, Meta AI?
(a) Google
(b) Apple
(c) Meta Platforms
(d) Microsoft
Ans: (c) Meta Platforms
