Which of the following statements about magnetite ore of iron is/are correct?1. It is known as black ore.2. It contains 60% to 70% of pure iron.3. It possesses magnetic properties. Select the correct answer using the codes given below:

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Which of the following statements about magnetite ore of iron is/are correct?<br />1. It is known as black ore.<br />2. It contains 60% to 70% of pure iron.<br />3. It possesses magnetic properties. Select the correct answer using the codes given below: