Question
Download Solution PDFഭൂവൽക്കത്തിൽ ഏറ്റവും സമൃദ്ധമായ രണ്ടാമത്തെ മൂലകം ഏത്:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFശരിയായ ഉത്തരം സിലിക്കൺ ആണ്.
- ഭൂവൽക്കത്തിൽ ഏറ്റവും സമൃദ്ധമായ മൂലകമാണ് ഓക്സിജൻ , സിലിക്കൺ രണ്ടാമതാണ് .
- സിലിക്കയുടെയും ഓക്സിജന്റെയും സംയുക്തം ഈ പുറംതോടിന്റെ 60% വരും.
ഭൂവൽക്കത്തിലെ (ഭൂഖണ്ഡപരമായ) മൂലകങ്ങളുടെ ലഭ്യത:
മൂലകം | ശതമാനം | ആറ്റോമിക നമ്പർ (Z) |
ഓക്സിജൻ | 46.1% | 8 |
സിലിക്കൺ | 28.2% | 14 |
അലുമിനിയം | 8.23% | 13 |
ഇരുമ്പ് | 5.63% | 26 |
കാൽസ്യം | 4.15% | 20 |
ഹൈഡ്രജൻ | 0.140% | 1 |
കാർബൺ | 0.0200% | 6 |
Last updated on Jun 11, 2025
-> RRB NTPC 2025 Exam Postponed. Railway Recruitment Board has rescheduled the RRB NTPC Exam for June 5, 2025 (Shift 3).
-> RRB NTPC Exam Analysis 2025 is LIVE now. All the candidates appearing for the RRB NTPC Exam 2025 can check the complete exam analysis to strategize their preparation accordingly.
-> The UPSC Prelims Result 2025 and UPSC IFS Result 2025 has been released @upsc.gov.in
-> The RRB NTPC Admit Card 2025 has been released on its official website.
-> Candidates who will appear for the RRB NTPC Exam can check their RRB NTPC Time Table 2025 from here.
-> The RRB NTPC CBT 1 Exam is scheduled from 5th June to 24th June 2025 as per the revised tentative exam schedule.
-> The RRB NTPC 2025 Notification has been released for a total of 11558 vacancies.
-> A total of 3445 Vacancies have been announced for Undergraduate posts like Commercial Cum Ticket Clerk, Accounts Clerk Cum Typist, Junior Clerk cum Typist & Trains Clerk.
-> A total of 8114 vacancies are announced for Graduate-level posts in the Non-Technical Popular Categories (NTPC) such as Junior Clerk cum Typist, Accounts Clerk cum Typist, Station Master, etc.
-> Prepare for the exam using RRB NTPC Previous Year Papers.
-> Check out the Rajasthan PTET Admit Card 2025 and UPSC Prelims Result Date 2025 here.