पृथ्वी की भू-पर्पटी पर दूसरा सबसे प्रचुर तत्व है:

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

Answer (Detailed Solution Below)

Option 3 : सिलिकॉन
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Detailed Solution

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सही उत्तर सिलिकॉन है।

  • ऑक्सीजन पृथ्वी की पर्पटी में सबसे प्रचुर तत्व है जबकि सिलिकॉन दूसरे स्थान पर है।
  • सिलिकॉन और ऑक्सीजन का यौगिक, सिलिका, इस पर्पटी के लगभग 60% का निर्माण करता है।

Important Points

भू-पर्पटी (महाद्वीपीय) में तत्वों की प्रचुरता:

तत्व प्रतिशत  परमाणु संख्या (Z)
ऑक्सीजन 46.1% 8
सिलिकॉन 28.2% 14
एल्युमीनियम 8.23% 13
लोहा 5.63% 26
कैल्शियम 4.15% 20
हाइड्रोजन 0.140% 1
कार्बन 0.0200% 6

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