Asked: R.A.S./R.T.S. (Pre) 1999medium Level
QUESTION STATEMENT:द्विभाषी / Bilingual
लोहा जिससे प्राप्त किया जाता है, वह है—
Iron is extracted from:
SELECT CORRECT OPTION:
A
चूने का पत्थर
Limestone
B
पिंच-ब्लैंड
Pitchblende
C
मोनाजाइट रेत
Monazite sand
D
हेमेटाइट
Hematite
Correct
Official Solution & Explanation:
Correct Answer: Option D(हेमेटाइट)
हेमेटाइट ($Fe_2O_3$) और मैग्नेटाइट ($Fe_3O_4$) लोहे के प्रमुख अयस्क हैं। पिंच-ब्लैंड से यूरेनियम, मोनाजाइट से थोरियम तथा चूने के पत्थर ($CaCO_3$) से कैल्शियम प्राप्त होता है।
Iron is extracted from hematite ($Fe_2O_3$) and magnetite ($Fe_3O_4$). Pitchblende is an ore of uranium, monazite is an ore of thorium, and limestone is a source of calcium.
Subject: General Science•Topic: Metals, Minerals, Ores: Properties and Uses•Subtopic: Metals, Minerals, Ores: Properties and Uses
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