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Check these statements.1. Brass is an alloy of Copper and Zinc.2. Magnetite is the main ore of Aluminium.3. Mercurius Solubilis are that substance which mainly involves mercury.4. Potassium Nitrate (KNO3) is a chemical used in photography. Which of the above are true? Code

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Check these statements.<br />1. Brass is an alloy of Copper and Zinc.<br />2. Magnetite is the main ore of Aluminium.<br />3. Mercurius Solubilis are that substance which mainly involves mercury.<br />4. Potassium Nitrate (KNO3) is a chemical used in photography. Which of the above are true? Code






 
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