Home  >  Defence Exams in India  >  UPSC CDS Previous Papers 2017 (I) General Knowledge - Bilingual

There are two elements calcium (atomic number 20) and argon (atomic number 18). The mass number of both the elements is 40. They are therefore known as दो तत्त्व-कैल्सियम (परमाणु क्रमांक 20) और आर्गन (परमाणु क्रमांक 18) है। दोनों तत्त्वों की द्रव्यमान संख्या 40 है। ऐसे तत्त्वों को क्या कहा जाता है?

🎲 Try a Random Question  |  Total Questions in Quiz: 116  |  🧠 Study this quiz with Flashcards
This question is part of a full practice quiz:
UPSC CDS Previous Papers 2017 (I) General Knowledge - Bilingual — practice the complete quiz, review flashcards, or try a random question.
🧠 Flashcards (fast review) 🧪 Practice Quiz ⚔️ Challenge a Friend 🥊

There are two elements calcium (atomic number 20) and argon (atomic number 18). The mass number of both the elements is 40. They are therefore known as दो तत्त्व-कैल्सियम (परमाणु क्रमांक 20) और आर्गन (परमाणु क्रमांक 18) है। दोनों तत्त्वों की द्रव्यमान संख्या 40 है। ऐसे तत्त्वों को क्या कहा जाता है?






 
❤ If you liked Fatskills, consider supporting us by checking out The Life Manuals You Never Got.

🌈  Our mission is to help improve your scores in any subject and exam withonline quizzes, practice tests, study guides, & advice for students. Since 2018.
About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | What Should We Know?
Privacy | Terms |
Without work one finishes nothing. - Ralph Waldo Emerson
© 2026 Fatskills.com

All trademarks, logos and brand names are the property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, trademarks and brands does not imply endorsement.