Chemistry Practice Question and Answer
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Q: Which metal starts floating when put in water?
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5feb08b7f6205c4d625d2e66- 1calciumtrue
- 2Nickelfalse
- 3Magnesiumfalse
- 4Potassiumfalse
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Answer : 1. "calcium"
Q: Which metal does not react with oxygen even at higher temperatures?
993 05feb081400e3f71b828c2fed
5feb081400e3f71b828c2fed- 1Ironfalse
- 2Goldtrue
- 3Potassiumfalse
- 4Aluminumfalse
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Answer : 2. "Gold"
Q: What percentage of carbon is in steel?
1878 05feb07d1f33a00432aff075e
5feb07d1f33a00432aff075e- 13%false
- 24%false
- 32%true
- 45%false
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Answer : 3. "2%"
Q: Which gas accumulates at the anode after electromagnetic decomposition of alumina?
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5feb077f00e3f71b828c2c39- 1Hydrogen gasfalse
- 2nitrogen gasfalse
- 3Carbon dioxide gasfalse
- 4oxygen gastrue
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Answer : 4. "oxygen gas"
Q: Is zinc ore?
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5feb073bd6478d50160f1f48- 1zinc bladetrue
- 2Bauxitefalse
- 3sodium chloridefalse
- 4Sinawarfalse
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Answer : 1. "zinc blade"
Q: Which of the following metals can be cut with a knife?
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5feb06f200e3f71b828c287a- 1Magnesiumfalse
- 2Sulfurfalse
- 3Sodiumtrue
- 4Chromiumfalse
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Answer : 3. "Sodium"
Q: Which of the following is the conductor of nonmetal electricity?
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5feb069af33a00432afeff9b- 1graphitetrue
- 2Copperfalse
- 3Sulfurfalse
- 4diamondfalse
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Answer : 1. "graphite"
Q: With which substance is it beneficial to treat a bee sting?
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5feb05e8f33a00432afefd0e- 1Baking Sodatrue
- 2sodium carbonatefalse
- 3sodium chloridefalse
- 4Othersfalse
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Answer : 1. "Baking Soda"
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