Selected MCQ

Current Question
Which element has smallest atomic radius?
  • A. Li
  • B. Be
  • C. B
  • D. F
Correct Answer: D
Explanation:
Atomic radius decreases across period; fluorine is smallest.
Related Question 1
Which ocean is smallest?
  • A. Atlantic
  • B. Indian
  • C. Arctic
  • D. Pacific
Correct Answer: C
Explanation:
Arctic Ocean is smallest.
Related Question 2
The Schwarzschild radius depends on which parameter?
  • A. Charge only
  • B. Angular momentum only
  • C. Mass of object
  • D. Temperature
Correct Answer: C
Explanation:
Event horizon radius is proportional to mass.
Related Question 3
Which element has highest ionization energy?
  • A. Na
  • B. Mg
  • C. Ar
  • D. K
Correct Answer: C
Explanation:
Noble gases have full shells and high ionization energy.
Related Question 4
A black hole’s event horizon radius is proportional to:
  • A. Charge only
  • B. Mass
  • C. Temperature
  • D. Spin only
Correct Answer: B
Explanation:
Schwarzschild radius depends directly on mass.
Related Question 5
Which element has highest electronegativity?
  • A. Oxygen
  • B. Fluorine
  • C. Nitrogen
  • D. Chlorine
Correct Answer: B
Explanation:
Fluorine is most electronegative element.