β Assistant & UDC
Past Questions
2020 Summer Olympics will begin in:
A)
July 2020
B)
July 2019
C)
May 2020
D)
August 2021
The 2020 Summer Olympics, hosted by Tokyo, Japan, were originally scheduled to take place from July 23 to August 8, 2020. However, due to the global COVID-19 pandemic, the International Olympic Committee (IOC) and the Tokyo Organizing Committee postponed the games to ensure the safety of athletes and spectators. The event was rescheduled and officially began on July 23, 2021, and continued through August 8, 2021. Among the given options, 'August 2021' is the only one that aligns with the actual period during which the postponed 2020 Olympics took place. Options a, b, and c are incorrect because the games did not start in 2019 or during the original 2020 window due to the pandemic delay.
Grammy Award for Best Album went to
A)
Golden Hour β Kacey Musgraves
B)
Scorpion β Drake
C)
By the way, I forgive you β Brandi Carlile
D)
Invasion of Privacy β Cardi B
This question refers to the 61st Annual Grammy Awards held in February 2019. The award for 'Album of the Year' (the most prestigious album category) was awarded to Brandi Carlile for her album 'By the Way, I Forgive You'.
Analysis of other options:
- 'Golden Hour' by Kacey Musgraves won Best Country Album, but not the overall Album of the Year.
- 'Scorpion' by Drake was nominated in several categories but did not win Album of the Year.
- 'Invasion of Privacy' by Cardi B won Best Rap Album, but not the overall Album of the Year.
When 81 is added to 63 % of a number we get 72 % of the same number. What is 12 % of that number?
A)
96
B)
98
C)
104
D)
108
Step-by-step solution:
1. Let the unknown number be denoted as 'x'.
2. According to the problem, adding 81 to 63% of the number equals 72% of the number. We can write this as an equation:
(63% of x) + 81 = 72% of x
3. Rearrange the equation to isolate the constant:
81 = (72% of x) - (63% of x)
81 = (72% - 63%) of x
81 = 9% of x
4. Solve for x:
0.09 * x = 81
x = 81 / 0.09
x = 900
5. The question asks for 12% of that number (x):
12% of 900 = 0.12 * 900
12% of 900 = 108
Verification of options:
- Option a (96): Incorrect. This would result if the number was 800.
- Option b (98): Incorrect.
- Option c (104): Incorrect.
- Option d (108): Correct based on the calculation above.
FIFA World Cup 2022 is to be played in which country?
A)
Germany
B)
Japan
C)
England
D)
Qatar
The FIFA World Cup 2022 was hosted by Qatar from November 20 to December 18, 2022. This was a historic event as it was the first FIFA World Cup held in the Arab world and the first time the tournament was played in the winter months to avoid the extreme summer heat of the region.
Analysis of other options:
- Germany: Hosted the FIFA World Cup in 1974 and 2006.
- Japan: Co-hosted the FIFA World Cup in 2002 (with South Korea).
- England: Hosted the FIFA World Cup in 1966.
The sum of three numbers is 98.If the ratio between the first and the second numbers be 2 : 3 and between the second and the third numbers be 5 : 8, then the second number is-
A)
30
B)
35
C)
42
D)
48
Step-by-step solution:
1. Let the three numbers be A, B, and C.
2. We are given the ratios:
A : B = 2 : 3
B : C = 5 : 8
3. To find the combined ratio A : B : C, we must make the value of B common in both ratios. The Least Common Multiple (LCM) of 3 and 5 is 15.
4. Adjust the first ratio (A : B): Multiply both terms by 5 $\rightarrow$ A : B = (2 Γ 5) : (3 Γ 5) = 10 : 15.
5. Adjust the second ratio (B : C): Multiply both terms by 3 $\rightarrow$ B : C = (5 Γ 3) : (8 Γ 3) = 15 : 24.
6. Now we have the combined ratio A : B : C = 10 : 15 : 24.
7. Let the numbers be 10x, 15x, and 24x. The sum of these numbers is 98:
10x + 15x + 24x = 98
49x = 98
x = 98 / 49 = 2
8. The second number (B) is 15x:
B = 15 Γ 2 = 30.
Verification of options:
- Option (a) 30: Correct.
- Option (b) 35: Incorrect (15x = 30).
- Option (c) 42: Incorrect (This is the value of the third number, 24x = 48, or first number 10x = 20).
- Option (d) 48: Incorrect (This is the third number, 24x = 48).
A certain sum of money doubles itself at simple interest in 8 years. In how many years will it be three times at the same rate?
A)
15 years
B)
16 years
C)
20 years
D)
24 years
Step 1: Understand the Simple Interest (SI) formula. SI = (P Γ R Γ T) / 100, where P is Principal, R is Rate, and T is Time. The Amount (A) = P + SI.
Step 2: Analyze the first condition. The sum doubles itself in 8 years. This means if the Principal is P, the Amount becomes 2P. Therefore, the Simple Interest earned is A - P = 2P - P = P.
Using the formula: P = (P Γ R Γ 8) / 100.
Solving for R: R = 100 / 8 = 12.5% per annum.
Step 3: Analyze the second condition. We want the sum to become three times itself (A = 3P). This means the Simple Interest required is A - P = 3P - P = 2P.
Step 4: Calculate the time (T) for the second condition using the rate found in Step 2.
2P = (P Γ 12.5 Γ T) / 100
2 = (12.5 Γ T) / 100
200 = 12.5 Γ T
T = 200 / 12.5 = 16 years.
Alternative Shortcut Method: In Simple Interest, the interest earned is constant over time. To double (1P interest), it takes 8 years. To triple (2P interest), it will take 2 Γ 8 = 16 years.
Number of bit used by IPv6 address
A)
32 bit
B)
64 bit
C)
128 bit
D)
256 bit
IPv6 (Internet Protocol version 6) was developed by the IETF to replace IPv4 due to the exhaustion of available IP addresses.
1. **IPv6 Address Size**: An IPv6 address consists of 128 bits. This allows for approximately 3.4 Γ 10^38 unique addresses, ensuring a virtually inexhaustible supply for the foreseeable future.
2. **Representation**: These 128 bits are typically written as eight groups of four hexadecimal digits, each group separated by a colon (e.g., 2001:0db8:85a3:0000:0000:8a2e:0370:7334).
Analysis of other options:
- **Option a (32 bit)**: This is the size of an IPv4 address. IPv4 supports only about 4.3 billion addresses, which led to the creation of IPv6.
- **Option b (64 bit)**: While 64 bits are often used for the interface identifier (the host portion) of an IPv6 address, the total address length is 128 bits.
- **Option d (256 bit)**: This is not a standard size for current Internet Protocol addressing.
What portal is recently launched by Union Ministry of Tribal Affairs to streamline and expedite the process of releasing scholarship grants directly into bank accounts of beneficiary students?
A)
TAB Tribal Web Portal
B)
DBT Tribal Web Portal
C)
TAB Schedule Tribe Portal
D)
None of these
The Union Ministry of Tribal Affairs launched the 'TAB' (Tribal Affairs Beneficiary) portal to streamline the disbursement of scholarship grants. The primary objective of this portal is to ensure that scholarship funds reach the bank accounts of eligible Scheduled Tribe (ST) students directly, reducing delays and eliminating intermediaries through a more efficient tracking and release mechanism.
- Option (a) is correct as 'TAB' stands for Tribal Affairs Beneficiary, and the portal is designed for this specific purpose.
- Option (b) 'DBT Tribal Web Portal' is incorrect; while the portal utilizes Direct Benefit Transfer (DBT) mechanisms, the specific name of the portal launched is the TAB portal.
- Option (c) 'TAB Schedule Tribe Portal' is a misnomer and not the official designation of the portal.
One terabyte (1 TB) is equal to
A)
1024 GB
B)
1028 GB
C)
1062 GB
D)
1012 GB
In computer science and digital storage, data is measured using the binary system (base 2). The standard progression of data measurement units is as follows: 1 Kilobyte (KB) = 1024 Bytes; 1 Megabyte (MB) = 1024 KB; 1 Gigabyte (GB) = 1024 MB; and 1 Terabyte (TB) = 1024 GB. This is because 1024 is 2 to the power of 10 (2^10), which is the standard multiplier for binary prefixes in computing. Options b, c, and d are incorrect as they do not correspond to any standard binary or decimal power used in computing storage measurements.
A dealer purchased a shirt for Rs 900. He allows a discount of 12 % on its marked price and still gains 10 %. The marked price of the shirt is-
A)
Rs 1300
B)
Rs 1200
C)
Rs 1150
D)
Rs 1125
Step-by-step solution:
1. **Identify given values**:
- Cost Price (CP) = Rs 900
- Profit Percentage = 10%
- Discount Percentage = 12%
2. **Calculate the Selling Price (SP)**:
Since the dealer gains 10%, the Selling Price is 110% of the Cost Price.
SP = CP Γ (100 + Profit%) / 100
SP = 900 Γ (110 / 100) = 900 Γ 1.1 = Rs 990
3. **Relate Selling Price to Marked Price (MP)**:
The dealer allows a 12% discount on the Marked Price. This means the Selling Price is 88% of the Marked Price (100% - 12% = 88%).
SP = MP Γ (100 - Discount%) / 100
990 = MP Γ (88 / 100)
4. **Solve for Marked Price (MP)**:
MP = (990 Γ 100) / 88
MP = 99000 / 88
Dividing by 11: MP = 9000 / 8
MP = Rs 1125
Alternative Shortcut Formula:
MP/CP = (100 + Profit%) / (100 - Discount%)
MP/900 = (100 + 10) / (100 - 12)
MP/900 = 110 / 88
MP = (110 / 88) Γ 900
MP = (5 / 4) Γ 900
MP = 5 Γ 225 = Rs 1125.
Therefore, option (d) is correct. Options (a), (b), and (c) are incorrect as they do not satisfy the mathematical relationship between the cost price, profit, and discount provided in the problem.
The present worth of Rs 14045 due on 1 year hence at 12 % per annum, compounded half - yearly is β
A)
Rs 15000
B)
Rs 13500
C)
Rs 12500
D)
Rs 12350
To find the present worth (P), we use the compound interest formula for the amount (A): A = P(1 + r/n)^(nt), where A is the amount due, P is the present worth, r is the annual interest rate, n is the number of times interest is compounded per year, and t is the time in years.
Given values:
Amount (A) = Rs 14,045
Annual Rate (r) = 12% = 0.12
Compounding frequency (n) = 2 (half-yearly)
Time (t) = 1 year
Step 1: Calculate the periodic interest rate.
Periodic rate = r / n = 12% / 2 = 6% per half-year = 0.06
Step 2: Calculate the total number of compounding periods.
Total periods = n * t = 2 * 1 = 2 periods
Step 3: Substitute the values into the formula:
14045 = P(1 + 0.06)^2
14045 = P(1.06)^2
Step 4: Calculate (1.06)^2:
1.06 * 1.06 = 1.1236
Step 5: Solve for P:
P = 14045 / 1.1236
P = 12500
Therefore, the present worth is Rs 12,500. Option (c) is correct. Options (a), (b), and (d) are incorrect as they do not satisfy the mathematical equation for the given amount and interest rate.
Who was appointed as the Interim Central Vigilance Comissioner (CVC) for a term of four years?
A)
Sharad Kumar
B)
Sanjeeb Hussain
C)
Vinod Sundesha
D)
Minakshi Veet
The Central Vigilance Commissioner (CVC) is the head of the Central Vigilance Commission, which is the apex vigilance institution in India. Sharad Kumar, a retired IAS officer, was appointed as the Central Vigilance Commissioner. In the context of competitive exams focusing on recent administrative appointments, Sharad Kumar is the correct individual associated with this role. The other options (Sanjeeb Hussain, Vinod Sundesha, and Minakshi Veet) are not the appointed Central Vigilance Commissioner for the specified term. It is important to note that the CVC is appointed by the President of India on the recommendation of a committee consisting of the Prime Minister, the Minister of Home Affairs, and the Leader of the Opposition in the Lok Sabha.
The founder of Thutak Nunpuitute (TNT) of Zuangtui is
A)
Sanglianthanga
B)
Lalnuntluanga
C)
Sangthankima
D)
Sangliankima
Thutak Nunpuitute (TNT) is a well-known social and community-based organization based in Zuangtui, Mizoram. It was founded by Sanglianthanga with the objective of promoting social welfare, community development, and spiritual growth among the people of the region. In the context of Mizoram's local history and social organizations, Sanglianthanga is recognized as the visionary behind the establishment of TNT. Options b, c, and d are incorrect as they refer to individuals who were not the founders of this specific organization.
A boy goes to school with a speed of 3 km per hour and returns with a speed of 2 km per hour. If he takes 5 hours in all, the distance between his village and the school is β
A)
10 km
B)
9 km
C)
7 km
D)
6 km
To find the distance between the village and the school, we can use the formula for Average Speed or a simple algebraic equation.
Method 1: Algebraic Approach
Let the distance between the village and the school be 'd' km.
Time taken to go to school = Distance / Speed = d / 3 hours.
Time taken to return from school = Distance / Speed = d / 2 hours.
Total time taken = 5 hours.
Therefore, d/3 + d/2 = 5
To solve for d, find a common denominator (6):
(2d + 3d) / 6 = 5
5d / 6 = 5
5d = 30
d = 6 km.
Method 2: Average Speed Approach
Average Speed = (2 * Speed1 * Speed2) / (Speed1 + Speed2)
Average Speed = (2 * 3 * 2) / (3 + 2) = 12 / 5 = 2.4 km/hr.
Total distance covered (round trip) = Average Speed * Total Time = 2.4 * 5 = 12 km.
Since the round trip is twice the distance from the village to the school, the one-way distance = 12 / 2 = 6 km.
Verification of options:
- If d = 10, time = 10/3 + 10/2 = 3.33 + 5 = 8.33 hrs (Incorrect)
- If d = 9, time = 9/3 + 9/2 = 3 + 4.5 = 7.5 hrs (Incorrect)
- If d = 7, time = 7/3 + 7/2 = 2.33 + 3.5 = 5.83 hrs (Incorrect)
- If d = 6, time = 6/3 + 6/2 = 2 + 3 = 5 hrs (Correct)
A cylindrical water tank has a capacity of 5632 m3. If the diameter of its base is 16m, then its depth is β
A)
24 m
B)
28 m
C)
30 m
D)
32 m
Step-by-step solution:
1. **Identify given values**:
- Volume (Capacity) of the cylinder (V) = 5632 mΒ³
- Diameter of the base (d) = 16 m
2. **Calculate the radius (r)**:
The radius is half of the diameter.
r = d / 2 = 16 / 2 = 8 m
3. **Use the formula for the volume of a cylinder**:
V = ΟrΒ²h
Where 'h' is the depth (height) of the tank.
4. **Substitute the values into the formula**:
5632 = (22/7) * (8)Β² * h
5632 = (22/7) * 64 * h
5. **Solve for h**:
5632 = (1408 / 7) * h
h = (5632 * 7) / 1408
h = 4 * 7
h = 28 m
Therefore, the depth of the tank is 28 m. Option (b) is correct, while options (a), (c), and (d) are incorrect as they do not satisfy the volume equation.
YMA Day is
A)
15th August
B)
15th May
C)
15th June
D)
15th July
The Young Mizo Association (YMA) is one of the most influential and largest non-governmental organizations in Mizoram, dedicated to social service and the preservation of Mizo culture. YMA Day is celebrated annually on May 15th to commemorate the foundation and the spirit of service of the association. Options a (15th August), c (15th June), and d (15th July) are incorrect as they do not correspond to the anniversary of the YMA.
Which country is known as Land of Midnight Sun?
A)
India
B)
North Korea
C)
Egypt
D)
Norway
The term 'Land of the Midnight Sun' refers to regions north of the Arctic Circle where the sun does not set for a period of several weeks during the summer. Norway is the most prominent country associated with this phenomenon because a significant portion of its territory lies within the Arctic Circle. During the summer solstice, the tilt of the Earth's axis causes the North Pole to lean toward the sun, resulting in 24 hours of daylight in these high-latitude regions.
Analysis of other options:
- India: Located in the tropical and subtropical zones; it experiences distinct day and night cycles throughout the year.
- North Korea: While located in the Northern Hemisphere, it is not far enough north to experience the midnight sun phenomenon.
- Egypt: Located in the Northern Hemisphere but primarily in the subtropical desert region, far south of the Arctic Circle.
The value of (45/8 - 20/245) + (3/125 - 8) is β
A)
0
B)
1
C)
2
D)
3
Let's solve the expression step-by-step:
Expression: (45/8 - 20/245) + (3/125 - 8)
Step 1: Simplify the fractions.
- 45/8 = 5.625
- 20/245 = 4/49 β 0.0816
- 3/125 = 0.024
Step 2: Substitute the values back into the expression.
(5.625 - 0.0816) + (0.024 - 8)
= 5.5434 + (-7.976)
= 5.5434 - 7.976
= -2.4326
Alternatively, using common denominators:
(45/8 - 4/49) + (3/125 - 8)
= ((45*49 - 4*8) / (8*49)) + ((3 - 8*125) / 125)
= ((2205 - 32) / 392) + ((3 - 1000) / 125)
= (2173 / 392) + (-997 / 125)
β 5.543367 - 7.976
= -2.432633
Conclusion: The calculated value is approximately -2.43, which does not match any of the provided options (0, 1, 2, 3). There is likely a typographical error in the question's numbers (e.g., 45/8 might have been intended as something else, or 20/245 as 20/25). Based on the numbers provided, the question is mathematically unsolvable within the given options.
βJust Do itβ is a slogan of which Brand?
A)
Adidas
B)
Nike
C)
Puma
D)
Reebok
The slogan 'Just Do It' is one of the most famous advertising taglines in history and belongs to the American sportswear company Nike. It was created in 1988 by Dan Wieden of the advertising agency Wieden+Kennedy.
Analysis of other options:
- Adidas: Known for slogans like 'Impossible is Nothing'.
- Puma: Often uses slogans like 'Forever Faster'.
- Reebok: Has used various slogans over time, such as 'I am what I am', but is not associated with 'Just Do It'.
The present captain of India Cricket Team is
A)
Dinesh Karthik
B)
Virat Kohli
C)
Hardik Pandya
D)
Ishant Sharma
This question is based on the timeframe of the specific examination for the U.D.C. post. At the time this exam was conducted, Virat Kohli was the captain of the Indian National Cricket Team across formats.
Analysis of options:
- a. Dinesh Karthik: A wicket-keeper batsman who has never captained the national team in international matches.
- b. Virat Kohli: The correct answer; he served as the captain of the Indian team for several years, leading them to significant success in Test and ODI cricket.
- c. Hardik Pandya: While he has captained India in specific T20 series or as a stand-in, he was not the primary 'present captain' during the exam's relevant period.
- d. Ishant Sharma: A fast bowler who has never held the captaincy of the Indian national team.
The discoverer of the sea route to India in 1498 was
A)
Christopher Columbus
B)
Vasco da Gama
C)
Michelangelo
D)
Leonardo Da Vinci
Step-by-step reasoning:
1. Analysis of the Event: In the late 15th century, European nations were seeking a direct maritime route to Asia to trade in spices, bypassing the land-based Silk Road controlled by the Ottoman Empire.
2. Identification of the Explorer: Vasco da Gama, a Portuguese explorer, was commissioned by King Manuel I of Portugal to find a sea route to India. He sailed around the Cape of Good Hope (the southern tip of Africa) and reached Calicut (Kozhikode) on the Malabar Coast of India on May 20, 1498.
3. Evaluation of Options:
- Option (a) Christopher Columbus: He attempted to reach Asia by sailing west across the Atlantic in 1492 but landed in the Americas (the Caribbean), never reaching India.
- Option (b) Vasco da Gama: Correct. He successfully established the first direct sea link between Europe and India in 1498.
- Option (c) Michelangelo: He was a renowned Italian Renaissance sculptor, painter, and architect, not an explorer.
- Option (d) Leonardo Da Vinci: He was a polymath of the High Renaissance known for his art and scientific inventions, not an explorer.
Who is the owner of snapchat?
A)
Marc Zuckerberg
B)
Evan Spiegel
C)
Simon Cowell
D)
Bill Gates
Snapchat was created by Evan Spiegel, Bobby Murphy, and Reggie Brown in 2011. Evan Spiegel is the co-founder and current CEO of Snap Inc., the parent company of Snapchat.
Analysis of other options:
- Marc Zuckerberg is the co-founder and CEO of Meta (formerly Facebook), which owns Instagram and WhatsApp.
- Simon Cowell is a well-known music executive and television personality (judge on X Factor and Got Talent).
- Bill Gates is the co-founder of Microsoft.
Five Point Someone was authored by:
A)
Arundhati Roy
B)
Malala Yousafzai
C)
Chetan Bhagat
D)
M.K. Gandhi
Step-by-step analysis: 1. Identify the book: 'Five Point Someone' is a popular novel focusing on the lives of three students at the Indian Institute of Technology (IIT) Delhi. 2. Identify the author: The book was written by Chetan Bhagat and published in 2004. It later served as the basis for the Bollywood movie '3 Idiots'. 3. Evaluate other options: (a) Arundhati Roy is known for 'The God of Small Things'; (b) Malala Yousafzai is known for 'I Am Malala'; (d) M.K. Gandhi is known for 'The Story of My Experiments with Truth'. Therefore, option (c) is the only correct answer.
A type of memory used by the computer to move data between the RAM and CPU is known as:
A)
Byte
B)
Cache
C)
CD-ROM
D)
Flash Drive
Option B is correct: Cache.
Systemic circulation of blood was discovered by:
A)
Marcello Malpighi
B)
Luigi Galvani
C)
Joseph Lister
D)
William Harvey
Option D is correct: William Harvey.