Chemistry Practice Question and Answer
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Q: Melting and boiling points of ionic compounds -
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61275b84b05363065a005e7a- 1contains the followingfalse
- 2are hightrue
- 3are normalfalse
- 4All the statements are truefalse
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Answer : 2. "are high"
Q: Gas is produced by the reaction of steam on iron?
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612765e4b05363065a00aedf- 1Hydrogen gastrue
- 2Oxygen gasfalse
- 3ammonia gasfalse
- 4Nitrogen gasfalse
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Answer : 1. "Hydrogen gas"
Q: Neutron was discovered -
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61655f2dd881f961723229c2- 1Chadwicktrue
- 2Newtonfalse
- 3Rutherfordfalse
- 4Thomsonfalse
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Answer : 1. "Chadwick "
Q: Curie is the unit of:
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61655c5bd881f96172322089- 1Heatfalse
- 2Energyfalse
- 3Radioactivitytrue
- 4Temperaturefalse
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Answer : 3. "Radioactivity "
Q: Which acid is used in lemons?
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5ef2f33d7c1ec61320b147a2- 1Acetic acidfalse
- 2Nitric acidfalse
- 3Citric acidtrue
- 4All of the abovefalse
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Answer : 3. "Citric acid "
Q:Read the following questions carefully and answer them.
The isotope of Uranium used in atomic reactors is
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63aaabe3e541fa7a01223f5f- 1$$U^235$$true
- 2$$U^236$$false
- 3$$U^237$$false
- 4$$U^232$$false
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Answer : 1. "$$U^235$$ "
Q: A radio-active substance has a half life of six months. Three-fourth of the substance will decay in____.
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5f48d6b3e7f09063e630a3d9- 1Six monthsfalse
- 2Ten monthsfalse
- 3Twelve monthstrue
- 4Twenty four monthsfalse
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Answer : 3. "Twelve months"
Q: Is it an ore of zinc?
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6127594bdbe92e068b90f4f2- 1Zinc Bladetrue
- 2Bauxitefalse
- 3sodium chloridefalse
- 4Sinawarfalse
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Answer : 1. "Zinc Blade"
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