SSC GD Constable previous year question
In geology, Sima (the lower layer of the Earth's crust) is composed of a combination of rocks rich in ________ and magnesium. These two minerals are the most abundant minerals found in the oceanic crust.
Asked in SSC GD Constable 2025: 11 Feb 2025 Shift 2 (Afternoon) · General Awareness
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Correct answer: (B) Silicate
Sima is composed mainly of silicate and magnesium-rich rocks, hence the name Si-Ma.
हिंदी में प्रश्न
भूविज्ञान में, सिमा/Sima (पृथ्वी की पर्पटी की निचली परत) ________ और मैग्नीशियम से समृद्ध शैलों के संयोजन से बनी है। ये दोनों खनिज समुद्री पर्पटी में सबसे अधिक मात्रा में पाए जाने वाले खनिज हैं।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (B) सिलिकेट (silicate)
सिमा मुख्यतः सिलिकेट और मैग्नीशियम-समृद्ध शैलों से बना है, इसीलिए इसे Si-Ma नाम दिया गया है।
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