Quantum_computing MCQs

Q11. What is a quantum circuit made of?

Resistors
Logic gates
Quantum gates
Transistors

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Correct: Quantum gates

Quantum circuits use quantum gates.

Q12. Which particle property is used in qubits?

Mass
Spin
Charge
Temperature

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Correct: Spin

Spin states are often used as qubits.

Q13. What is a measurement in quantum computing?

State duplication
State collapse
State amplification
State rotation

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Correct: State collapse

Measurement collapses the quantum state.

Q14. What is a Bloch sphere used for?

Error correction
Visualizing qubit states
Quantum encryption
Gate synthesis

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Correct: Visualizing qubit states

Bloch sphere represents qubit states.

Q15. Which company built a quantum processor named Sycamore?

IBM
Google
Microsoft
Intel

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Correct: Google

Google developed the Sycamore processor.

Q16. What is quantum supremacy?

Classical faster than quantum
Quantum outperforming classical
Equal performance
Noisy computation

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Correct: Quantum outperforming classical

Quantum performs tasks infeasible for classical.

Q17. Which gate entangles two qubits?

Hadamard
Pauli-Z
CNOT
Phase

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Correct: CNOT

CNOT creates entanglement.

Q18. What is a quantum annealer mainly used for?

Sorting
Optimization
Rendering
Compression

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Correct: Optimization

Quantum annealing solves optimization problems.

Q19. Which notation represents probability amplitude?

Real number
Complex number
Integer
Boolean

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Correct: Complex number

Quantum amplitudes are complex numbers.

Q20. What is a Toffoli gate?

Single qubit gate
Two qubit gate
Three qubit gate
Measurement gate

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Correct: Three qubit gate

Toffoli is a controlled-controlled-NOT gate.