Gamma rays are produced from: MCQ with Answer and Explanation

Gamma rays are produced from:
A. Chemical reactions
B. Outer electron transitions
C. Friction
D. Nuclear de-excitation
Answer: Option D
Solution (By JKExamLibrary)
Gamma rays are high-energy photons emitted from the nucleus when it transitions from excited state to lower energy state. Alpha/beta decay often leaves nucleus in excited state which emits gamma.

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Practice More chemistry Questions

Question #1
Gamma rays have the highest penetration power because they:
A. Are heaviest
B. Are slowest
C. Carry positive charge
D. Have no mass and no charge

Correct Answer: Option D


Explanation:
Gamma rays are electromagnetic waves with no rest mass and no charge, so they do not readily interact with matter via ionization compared to alpha and beta particles. They can penetrate deep into materials, requiring dense lead or thick concrete for shielding. Alpha and beta particles interact strongly via charge, losing energy quickly. Gamma rays are similar to X-rays but from nuclear origin.

This question belongs to: Science chemistry
Question #2
Which of the following is NOT a characteristic of an ideal gas?
A. No intermolecular forces
B. Particles have strong attractive forces
C. Particles have no volume
D. Obeys PV = nRT at all conditions

Correct Answer: Option B


Explanation:
Ideal gas assumptions: particles have negligible volume, no intermolecular forces, and elastic collisions. Real gases deviate due to finite molecular size and attractions. At high pressure and low temperature, real gases deviate significantly; van der Waals equation corrects. So having strong attractive forces is not an ideal gas property. Ideal gas law PV = nRT is a limiting law.

This question belongs to: Science chemistry
Question #3
An electrochemical cell that converts chemical energy into electrical energy is called:
A. Galvanic cell
B. Electrolytic cell
C. Both B and C
D. Daniel cell

Correct Answer: Option C


Explanation:
A galvanic (or voltaic) cell generates electrical energy from a spontaneous chemical reaction. The Daniel cell is a specific, classic type of galvanic cell using zinc and copper electrodes. An electrolytic cell does the reverse, using electrical energy to drive a non-spontaneous chemical reaction.

This question belongs to: Science chemistry