Q. In the human body, the most abundant element is
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Q. Which of the following is a characteristic of all minerals?
Q. In natural gas, the compound present in major amounts is made up of hydrogen and
Q. What causes the smell in onion and garlic?
Q. The gas that causes suffocation and death when coal or coke is burnt in a closed room is
Q. Which of the following metals can displace copper from copper sulphate solution ?
Q. Which among the following happens in an oxidation reaction ?
Q. Which metal does not undergo corrosion due to the formation of oxide layer?
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