In the following questions, out of the four alternatives choose the one which can be substituted for the given words/sentence:

One who collects coins as hobby

Correct option is D

The correct one-word substitution for "One who collects coins as a hobby" is numismatist.

• Numismatist: A person who studies or collects coins, medals, or currency as a hobby or profession.
  • Hindi Meaning: सिक्कों को संग्रह करने वाला व्यक्ति
  • Example: He is a passionate numismatist with a collection of ancient coins from around the world.

Meanings of the other options:

• Statistician: A person who specializes in the study and analysis of statistics.

  • Hindi Meaning: सांख्यिकीविद्
  • Example: A statistician analyzed the survey data for the research project.

• Philatelist: A person who collects or studies postage stamps.

  • Hindi Meaning: डाक टिकट संग्रहकर्ता
  • Example: The philatelist had an impressive collection of rare stamps.

• Ornithologist: A person who studies birds.

  • Hindi Meaning: पक्षी विज्ञानी
  • Example: The ornithologist spent years observing migratory birds in their natural habitat.