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Past Questions
A thunder-cloud is at a distance of 3.3 km. If the sound of the thunder-cloud follows the flash after 10 seconds, the speed at which sound travels is -
A)
110 m/sec
B)
220 m/sec
C)
330 m/sec
D)
350 m/sec
Distance = 3.3 km = 3300 m. Time taken = 10 s. Speed = Distance ÷ Time = 3300 ÷ 10 = 330 m/sec. Hence, the correct option is (c). The other options do not match this calculation.
In a group of 70 people, 37 like coffee, 52 like tea and each person likes at least one of the two drinks. How many people like both coffee and tea?
A)
9
B)
10
C)
18
D)
19
Use the inclusion-exclusion principle. Let C = people who like coffee and T = people who like tea.
Given:
|C| = 37, |T| = 52, and every one of the 70 people likes at least one drink, so |C ∪ T| = 70.
Now,
|C ∪ T| = |C| + |T| - |C ∩ T|
70 = 37 + 52 - |C ∩ T|
70 = 89 - |C ∩ T|
|C ∩ T| = 19
So the correct answer is 19, which corresponds to option (d).
Note: The option list shows 19 as (d), so the expected answer is 19.
Who is the President of the People's Republic of China? (June, 2019)
A)
Li Keqiang
B)
Xi Jinping
C)
Deng Xiaoping
D)
Wang Yang
Xi Jinping has been the President of the People's Republic of China since 2013. Li Keqiang was the Premier, Deng Xiaoping was a former leader, and Wang Yang has held senior state/political positions but was not President.
Choose the sentence that uses the abbreviation correctly.
A)
She is Dr Olivia
B)
She is dr Olivia
C)
She is Dr. Olivia
D)
She is dr. Olivia
The abbreviation for "Doctor" is correctly written as "Dr." with a capital D and a full stop. Since it is used before a name, it should be capitalized. Options (a) and (b) are incorrect because they miss the full stop, and (d) is incorrect because the abbreviation is not capitalized.
Choose from the followings a storage device in a computer.
A)
Hard Disk
B)
USB Disk
C)
Floppy Disk
D)
All of these
Hard Disk, USB Disk, and Floppy Disk are all storage devices used to store data in a computer. Since each option listed is a storage device, the correct answer is 'All of these'.
One megabyte equals approximately
A)
10000 bytes
B)
10000 bits
C)
1 million bits
D)
1 million bytes
In computer terminology, 1 megabyte (MB) is approximately equal to 1,000,000 bytes. Among the given options, this matches option (d). Option (a) and (b) are far too small, and option (c) is incorrect because a megabyte refers to bytes, not bits.
Which of the following software is used to view web pages?
A)
Page Browser
B)
Opera Browser
C)
Internet Browser
D)
Web Browser
A web browser is the software used to access and view web pages on the internet. Opera Browser is an example of a web browser, but the general correct term is 'Web Browser'. 'Page Browser' is not a standard term, and 'Internet Browser' is informal/non-standard compared to the correct term.
Which of the following is a term related with printer?
A)
Cartridge
B)
DVD
C)
Hard Disk
D)
Keyboard
A cartridge is a component used in printers, especially inkjet printers, to hold ink or toner. DVD and Hard Disk are storage devices, while Keyboard is an input device, not a printer-related term.
In a computer system, which device is functionally opposite of a Keyboard?
A)
Trackball
B)
Mouse
C)
Joystick
D)
Printer
A keyboard is an input device, used to enter data into the computer. The functionally opposite device is an output device, which presents processed information to the user. Among the options, a printer is an output device, so it is the opposite of a keyboard. Trackball, mouse, and joystick are all input devices.
A bit, the smallest unit of data in a computer, stands for
A)
Binary Digit
B)
Binary Data
C)
Binary Deci
D)
Binary Code
A bit is the smallest unit of data in a computer and it stands for "Binary Digit". It can have only two values: 0 or 1. The other options are incorrect because a bit does not mean Binary Data, Binary Deci, or Binary Code.
Which of the following performs arithmetic and logical operations in a computer?
A)
I/O Unit
B)
Registers
C)
Arithmetic Logic Unit
D)
Control Unit
The Arithmetic Logic Unit (ALU) is the part of the CPU that performs arithmetic operations like addition and subtraction, as well as logical operations like AND, OR, and comparison. The I/O Unit handles input and output, Registers temporarily store data/instructions, and the Control Unit directs and coordinates operations but does not perform arithmetic or logical calculations.
Which institute has recently announced the creation of the Amartya Sen Chair in Inequality Studies?
A)
Harvard Kennedy School
B)
Oxford University
C)
Standford University
D)
London School of Economics and Political Science
The Amartya Sen Chair in Inequality Studies was announced by Oxford University. This chair is associated with work on inequality studies and honours economist Amartya Sen. The other options do not match the announcement: Harvard Kennedy School, Stanford University, and London School of Economics were not the institution that created this specific chair.
Which airport was named as the Best Airport in the World according to the Skytrax Word Airport Awards?
A)
Changi Airport
B)
Beijing Airport
C)
Dubai International Airport
D)
Heathrow Airport
The Skytrax World Airport Awards named Singapore’s Changi Airport as the Best Airport in the World. It is widely recognized for its facilities, passenger service, and overall airport experience. The other options were not named best airport in the world in Skytrax awards.
The longest south-ward flowing river in Mizoram is:
A)
Khawthlangtuipui
B)
Chhimtuipui
C)
Tiau
D)
Tuichâng
The longest southward-flowing river in Mizoram is the Chhimtuipui (also known as the Kaladan in its lower course). It flows generally southward and is regarded as the longest river system in Mizoram.
Why others are incorrect:
- Khawthlangtuipui: not the longest southward-flowing river.
- Tiau: a boundary river, but shorter than Chhimtuipui.
- Tuichâng: an important river in central Mizoram, but not the longest southward-flowing one.
So, the correct answer is Chhimtuipui.
Zero of the zero polynomial is:
A)
0
B)
1
C)
Any real number
D)
Not defined
The zero polynomial is the polynomial in which all coefficients are zero. Its value remains 0 for every real number substituted for the variable. Therefore, every real number is a zero of the zero polynomial. Option (a) is wrong because 0 is only one such number, not the only one. Option (b) is incorrect. Option (d) is also incorrect in the usual school-level definition.
The area of an equilateral triangle whose sides are 4 cm is
A)
83 cm2
B)
43 cm2
C)
243 cm2
D)
163 cm2
For an equilateral triangle, area = (√3 / 4) × a². Here side a = 4 cm, so area = (√3 / 4) × 16 = 4√3 cm². Therefore, the correct option is (b).
The full form of PUBG is:
A)
Player Underground Battle Ground
B)
Player Unknown Battle Ground
C)
Player Ultimate Battle Ground
D)
Player Uncharted Battle Ground
PUBG stands for 'PlayerUnknown's Battlegrounds,' commonly written in MCQ form as 'Player Unknown Battle Ground.' Option (b) is the closest and intended correct answer. The other options are incorrect because 'Underground,' 'Ultimate,' and 'Uncharted' are not part of the expansion.
The real name of PS Golay who has defeated the longest serving Sikkim Chief Minister Pawan Chamling was:
A)
Prem Singh Tamang
B)
Padamjit Singh Tamang
C)
Prakash Singh Tamang
D)
Pawan Singh Tamang
P. S. Golay is the popular name of Sikkim politician Prem Singh Tamang. He defeated Pawan Chamling in the 2019 Sikkim Assembly election, ending Chamling’s long tenure as Chief Minister. The other options are not his known real name.
Who invented DDT?
A)
Robert Koch
B)
Paul Hermann Muller
C)
Samuel Hanemann
D)
Watson & Arthur
DDT (dichloro-diphenyl-trichloroethane) was discovered for its insecticidal properties by Paul Hermann Müller in 1939. He was later awarded the Nobel Prize in Physiology or Medicine in 1948 for this discovery. Robert Koch was a bacteriologist, Samuel Hahnemann founded homeopathy, and Watson & Crick are known for the DNA double-helix model.
Antibiotics was discovered by:
A)
Robert Hooke
B)
Jean Baptiste-Denys
C)
Alexander Fleming
D)
Charles Richet
Antibiotics were discovered by Alexander Fleming. In 1928, he observed that the mold Penicillium notatum inhibited the growth of bacteria, leading to the discovery of penicillin, the first true antibiotic. Robert Hooke is known for microscopy and cell theory-related observations, Jean Baptiste-Denys for early blood transfusions, and Charles Richet for work on anaphylaxis, not antibiotics.
The species of Snake known as ‘rain-loving snake’ recently discovered in Mizoram is:
A)
Smithophis Atemporalis
B)
Smithophis Bicolor
C)
Smithophis Natricine
D)
Smithophis Malabar
The ‘rain-loving snake’ recently reported from Mizoram is **Smithophis atemporalis**. This species belongs to the genus Smithophis, known for hill-stream or rain-loving habits. Among the given options, only **Smithophis Atemporalis** matches the newly discovered Mizoram species. The other options are incorrect: **Smithophis bicolor** is a different species, **Smithophis natricine** is not a valid species name here, and **Smithophis malabar** refers to a species associated with the Malabar region, not Mizoram.
Who is the incumbent Minister of Youth Affairs and Sports?
A)
Rajyavardhan Singh Rathore
B)
Vijay Goel
C)
Jitendra Singh
D)
Kiren Rijiju
The incumbent Minister of Youth Affairs and Sports at the relevant time was Kiren Rijiju. Rajyavardhan Singh Rathore and Vijay Goel were earlier holders of the portfolio, while Jitendra Singh handled other ministries, not Youth Affairs and Sports.
If 3a = 4b = 5c, then a : b : c is:
A)
15 : 20 : 16
B)
20 : 15 : 12
C)
16 : 20 : 18
D)
15 : 25 : 30
Let 3a = 4b = 5c = k. Then a = k/3, b = k/4, and c = k/5. Taking the LCM of 3, 4, and 5 as 60, we get a : b : c = 20 : 15 : 12. However, among the given options, this corresponds to option (b), not (a). So the correct ratio is 20 : 15 : 12.
Who has become the first Indian to become a member of FIFA Executive Council?
A)
Priya Ranjan Das Munshi
B)
Praful Patel
C)
Kushal Das
D)
Sunando Dhar
Praful Patel became the first Indian to be elected as a member of the FIFA Executive Committee/Council. Priya Ranjan Das Munshi was an important football administrator and former AIFF president, but he was not the first Indian on FIFA's Executive Council. Kushal Das and Sunando Dhar are not associated with that milestone.
Which city is known as the ‘City of Cosmonauts’?
A)
Los Angeles
B)
San Francisco
C)
Moscow
D)
New York
Moscow is known as the 'City of Cosmonauts' because of its strong association with the Soviet space program and cosmonaut training. The other options are not known by this title.