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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Q: 52 (NDA-II/2017)

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 ;

question_subject: 

Geography

question_exam: 

NDA-II

stats: 

0,19,13,3,4,6,19

keywords: 

{'magnetite ore': [0, 0, 0, 1], 'magnetic properties': [0, 0, 0, 1], 'black ore': [0, 0, 0, 1], 'iron': [0, 0, 1, 1], 'pure iron': [0, 0, 1, 1]}

Option 1 states that magnetite ore of iron is known as black ore. This statement is correct. Magnetite is a black-colored iron ore.

Option 2 states that magnetite ore contains 60% to 70% of pure iron. This statement is correct. Magnetite is one of the primary sources of iron ore and typically contains a high percentage of iron.

Option 3 states that magnetite ore possesses magnetic properties. This statement is correct. Magnetite is a naturally occurring magnetic mineral and is strongly attracted to magnets.

Therefore, all three options are correct. Magnetite ore of iron is known as black ore, it contains 60% to 70% of pure iron, and it possesses magnetic properties.