MCQ Practice Hub

Quantum_computing MCQs

Q31. What is a quantum register?

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Correct: Group of qubits

A quantum register is a collection of qubits.

Q32. What is amplitude amplification used in?

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Correct: Grover's algorithm

Grover uses amplitude amplification.

Q33. Which gate performs a conditional operation?

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Correct: CNOT

CNOT is a controlled gate.

Q34. What is quantum interference?

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Correct: Wave cancellation and reinforcement

Interference shapes probability outcomes.

Q35. What is the role of cryogenics in quantum computers?

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Correct: Cooling to near absolute zero

Superconducting qubits require extreme cooling.

Q36. Which platform uses photons as qubits?

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Correct: Photonic systems

Photonic quantum computing uses light particles.

Q37. What is a hybrid quantum-classical algorithm?

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Correct: Both combined

Hybrid algorithms use both processors.

Q38. Which problem shows exponential speedup with quantum computing?

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Correct: Factoring

Factoring is exponentially faster with Shor's algorithm.

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