भू-कवचातील दुसरे सर्वाधिक मुबलक मूलद्रव्य कोणते आहे?

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NTPC CBT 2 2016 Previous Paper 5 (Held On: 18 Jan 2017 Shift 2)
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  1. ऑक्सिजन
  2. कार्बन
  3. सिलिकॉन
  4. हायड्रोजन

Answer (Detailed Solution Below)

Option 3 : सिलिकॉन
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Detailed Solution

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योग्य उत्तर सिलिकॉन आहे.

  • ऑक्सिजन हे भू-कवचातील सर्वाधिक मुबलक मूलद्रव्य आहे तर सिलिकॉन हे दुसर्‍या क्रमांकाचे मूलद्रव्य आहे.
  • सिलिकॉन आणि ऑक्सिजनचे संयुग, जे सिलिका आहे, हे भू-कवचापैकी 60% आहे.

भू-कवचातील सर्वाधिक मुलद्रव्यांची मुबलकता:

मूलद्रव्य टक्केवारी अणू अंक (Z)
ऑक्सिजन 46.1% 8
सिलिकॉन 28.2% 14
ल्युमिनियम 8.23% 13
लोह 5.63% 26
कॅल्शियम 4.15% 20
हायड्रोजन 0.140% 1
कार्बन 0.0200% 6
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