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English Language & Literature — CBSE Class 10 board question

Q1. [1]
Replace the underlined word used in the sentence with the best option given below : Born in 1872, Richard Willstatter was a chemist who invents the process of paper chromatography.
  1. (A) invent
  2. (B) has invented
  3. (C) will invent
  4. (D) invented
Previously asked in CBSE board exam
2025 2/5/1 Q3 (i)
Generated by claude-sonnet-4-6 · 2026-06-15 07:15 · grounding rag
Model Answer

The correct option is (D) invented.

The sentence describes a historical fact about Richard Willstatter (born 1872), so the simple past tense "invented" is required.

Explanation

When a sentence refers to a completed action in the past (indicated by "Born in 1872"), the simple past tense must be used. "Invent" is present tense, "has invented" is present perfect, and "will invent" is future — all incorrect here.

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