Balloons are filled with
nitrogen
helium
oxygen
argon
Additional Questions
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Which of the following does not contain a coinage metal? |
Answer |
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Which metal pollute the air of a big city? |
Answer |
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Bell metal is an alloy of |
Answer |
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Water is a good solvent of ionic salts because |
Answer |
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Which of the following is not an isotope of hydrogen? |
Answer |
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The main constituents of pearls are |
Answer |
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Amalgams are |
Answer |
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Which of the following is the lightest metal? |
Answer |
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Which of the following metals remain in liquid for under normal conditions? |
Answer |
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Potassium Permanganate is used for purifying drinking water, because |
Answer |