Selected MCQ

Current Question
A system with negative heat capacity is characteristic of:
  • A. Ideal gas
  • B. Black holes and self-gravitating systems
  • C. Solids
  • D. Liquids
Correct Answer: B
Explanation:
Adding energy can decrease temperature in gravitational systems.
Related Question 1
Which ion is negative?
  • A. Cation
  • B. Anion
  • C. Proton
  • D. Positron
Correct Answer: B
Explanation:
Anions gain electrons.
Related Question 2
Which energy is heat?
  • A. Thermal
  • B. Kinetic
  • C. Potential
  • D. Chemical
Correct Answer: A
Explanation:
Heat is thermal energy.
Related Question 3
Which system controls reflex?
  • A. Digestive
  • B. Nervous
  • C. Respiratory
  • D. Circulatory
Correct Answer: B
Explanation:
Nervous system handles reflexes.
Related Question 4
Which process absorbs heat?
  • A. Exothermic
  • B. Endothermic
  • C. Neutral
  • D. Isothermal
Correct Answer: B
Explanation:
Endothermic absorbs energy.
Related Question 5
Which ion has negative charge?
  • A. Cation
  • B. Anion
  • C. Proton
  • D. Neutron
Correct Answer: B
Explanation:
Anions gain electrons.