Quantum Computing MCQs with Answers

Introduction :

Dive into the futuristic world of Quantum Computing with our extensive collection of Multiple Choice Questions (MCQs) and detailed answers! This revolutionary field, though still emerging, holds immense potential to transform industries from healthcare to finance. This resource is meticulously designed for students, researchers, and tech enthusiasts in India and globally who are eager to grasp the fundamental concepts of quantum mechanics applied to computation, including qubits, superposition, entanglement, and quantum algorithms like Shor's and Grover's. Whether you're preparing for an advanced tech interview, studying for a specialized course, or simply curious to explore the next frontier of computing, our carefully curated MCQs offer an excellent and engaging way to test and deepen your understanding of Quantum Computing.


1 .
What is quantum computing ?
A)
Quantum computing is an old technology used in computation.
B)
Quantum computing used in computation to solve certain physics problems only.
C)
Quantum computing is the phenomena of quantum mechanics in computation to solve certain problems.
D)
None of the Above

Correct Answer :   Quantum computing is the phenomena of quantum mechanics in computation to solve certain problems.

2 .
In which year first quantum computer (2-qubit) was created?
A)
1998
B)
2000
C)
2001
D)
2003

Correct Answer :   1998

Explanation : In 1998 Isaac Chuang of the Los Alamos National Laboratory, Neil Gershenfeld of the Massachusetts Institute of Technology (MIT), and Mark Kubinec of the University of California at Berkeley created the first quantum computer (2-qubit) that could be loaded with data and output a solution.

3 .
Who is the father of quantum computing?
A)
Isaac Chuang
B)
Neil Gershenfeld
C)
Philip Glass
D)
David Deutsch

Correct Answer :   David Deutsch

4 .
What do we call the pieces of information in a quantum computer?
A)
Bits
B)
Qubits
C)
Bytes
D)
Qubytes

Correct Answer :   Qubits

5 .
When the information is between 0 and 1 in a quantum computer, what do we call this?
A)
Superposition
B)
Same position
C)
Ordinary position
D)
Different position

Correct Answer :   Superposition

6 .
Quantum computers are very good at dealing with_____
A)
Clarity
B)
Certainty
C)
Uncertainty
D)
Reliability

Correct Answer :   Uncertainty

7 .
What does 'entanglement' mean?
A)
Two particles are different
B)
Two particles are seperate
C)
Two particles are independent
D)
Two particles are connected

Correct Answer :   Two particles are connected

8 .
Quantum computers are powerful, but not reliable yet.
A)
True
B)
False
C)
--
D)
--

Correct Answer :   True

9 .
Generation of computers powered by levers and gears.
A)
First Gen. (ie the Eniac)
B)
Pre-gen. (ie: Difference Engine)
C)
Second Gen. (ie the IBM 1090)
D)
All of the Above

Correct Answer :   Pre-gen. (ie: Difference Engine)

10 .
What innovations are being developed in the 5th generation?
A)
Artificial intelligence
B)
Quantum Computers
C)
Brain-Computer Interfaces
D)
All of the Above

Correct Answer :   All of the Above

11 .
What can quantum computers be used for?
A)
Artificial Intelligence
B)
Simulations/Predictions
C)
Both (A) and (B)
D)
Google Docs and Slides

Correct Answer :   Both (A) and (B)

12 .
Why are we not able to use quantum computers in our homes?
A)
It is too heavy
B)
It needs to be completely isolated
C)
It has to be kept at absolute zero temperature
D)
Both (B) and (C)

Correct Answer :   Both (B) and (C)

13 .
When the two members of a Qubit pair exist in a single quantum state, it is known as ____________.
A)
Entanglement
B)
Engagement
C)
Superposition
D)
None of the Above

Correct Answer :   Entanglement

14 .
Which company has a quantum computer that we can use through their website?
A)
Apple
B)
IBM
C)
Google
D)
Microsoft

Correct Answer :   IBM

15 .
Which of the following is NOT a true statement about using a cloud storage option?
A)
It can be accessed through any computer, anywhere in the world
B)
Using the cloud keeps your computer safe from viruses
C)
You can easily share documents and/or files with friends or family
D)
Your computer or tablet can be set up to automatically sync with the cloud

Correct Answer :   Using the cloud keeps your computer safe from viruses

16 .
_________ is the point at which a quantum computer can complete a mathematical calculation that is demonstrably beyond the reach of even the most powerful supercomputer.
A)
Quantum energy
B)
Quantum entanglement
C)
Quantum supremacy
D)
None of the Above

Correct Answer :   Quantum supremacy

17 .
Quantum computing is relatively _________ than classical computing.
A)
Faster
B)
Slower
C)
Average
D)
None of the Above

Correct Answer :   Faster

18 .
Qubit stands for ________
A)
Quality bits
B)
Question bit
C)
Both (A) and (B)
D)
Quantum bit

Correct Answer :   Quantum bit

19 .
A paradigm of multiple autonomous computers, having a private memory, communicating through a computer network, is known as
A)
Distributed computing
B)
Parallel
C)
Cloud computing
D)
Centralized computing

Correct Answer :   Distributed computing

20 .
A qubit is a _______quantum-mechanical system.
A)
One-state
B)
Two-state
C)
Three-state
D)
Four-state

Correct Answer :   Two-state

21 .
Some of the leading companies in the field Quantum Computing are_______
A)
IBM
B)
ION-Q
C)
Google
D)
All of the Above

Correct Answer :   All of the Above

22 .
What hurdles do researchers face in developing a quantum computer?
A)
Qubits are finicky.
B)
Qubits stop functioning at the slightest disturbance.
C)
A large number of qubits into working together efficiently.
D)
All of the Above

Correct Answer :   All of the Above

23 .
A fully functioning quantum computer has the potential to be _________
A)
Slow
B)
Constant
C)
Transformative
D)
All of the Above

Correct Answer :   Transformative

24 .
Process data at Quantum computing
A)
Fast
B)
Slow
C)
Very Slow
D)
None of the Above

Correct Answer :   Fast

25 .
Quantum key distribution QKD Which use a series of
A)
Byte
B)
Photons
C)
Both (A) and (B)
D)
None of the Above

Correct Answer :   Photons

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