Who discovered that solar light presentation presents distinct missing dark absorptive band lines, establishing the Fraunhofer Lines? MCQ with Answer and Explanation

Who discovered that solar light presentation presents distinct missing dark absorptive band lines, establishing the Fraunhofer Lines?
A. Robert Bunsen
B. Gustav Kirchhoff
C. Isaac Newton
D. Joseph von Fraunhofer and William Hyde Wollaston
Answer: Option D
Solution (By JKSSB Mock Tests)
Wollaston observed early dark bands, and Fraunhofer mapped over 570 lines precisely using customized optical spectroscopes in 1814.

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Inventions and Discoveries Questions

Question #1
Who discovered that the element Beryllium is isolated from emerald and beryl crystal ores?
A. Martin Heinrich Klaproth
B. Jöns Jacob Berzelius
C. Louis-Nicolas Vauquelin
D. Humphry Davy

Correct Answer: Option C


Explanation:
Vauquelin discovered beryllium oxide in 1798 after chemical analysis of distinct mineral beryl matrix samples.

Question #2
Who discovered that the velocity of chemical reaction pathways balances linearly under specific concentration ratios, establishing the Law of Mass Action?
A. Antoine Lavoisier
B. Jöns Jacob Berzelius
C. Robert Boyle
D. Cato Maximilian Guldberg and Peter Waage

Correct Answer: Option D


Explanation:
Norwegian scientists Guldberg and Waage formulated the mathematical chemical equilibrium rate laws in 1864.

Question #3
The first practical automatic dishwasher was invented and patented by which female innovator in 1886?
A. Mary Anderson
B. Josephine Cochrane
C. Grace Hopper
D. Stephanie Kwolek

Correct Answer: Option B


Explanation:
Josephine Cochrane designed the first successful hand-powered mechanical dishwasher because she wanted to protect her fine china from chipping.