Chemistry Practice Question and Answer
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Q: Which of the following energy is most used in organic quantities?
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6329be895c208a6bf7ddd993- 1Solar Energytrue
- 2Petroleum Energyfalse
- 3Atomic Energyfalse
- 4Coal Energyfalse
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Answer : 1. "Solar Energy"
Q: Oxygenation is a chemical reaction in which
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5f7458b14637db732832e936- 1The electron is discarded.false
- 2Oxygen is a combination.false
- 3The ratio of the positive group increases.false
- 4All of the abovetrue
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Answer : 4. "All of the above"
Q: Which of the following metals are kept immersed in kerosene?
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61275d24dbe92e068b911ce2- 1Sodiumtrue
- 2Magnesiumfalse
- 3Zincfalse
- 4allfalse
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Answer : 1. "Sodium"
Q: Which non-metal is liquid at room temperature?
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6127640793f02206607ee962- 1mercuryfalse
- 2aluminumfalse
- 3Brominetrue
- 4Copperfalse
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Answer : 3. "Bromine"
Q: In 1931, who recognised that an aromatic compound must have an odd number of pairs of electrons, which can mathematically be written as 4n+2 (n = 0,1,2,3 etc.)?
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647de965e72c4684a1dcb8b3- 1Jacob Berzeliusfalse
- 2Erich Huckeltrue
- 3Antoine Lavoisierfalse
- 4Auguste Laurentfalse
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Answer : 2. "Erich Huckel"
Q: Which of the following non-metals are kept immersed in water?
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61275d63b05363065a006bf3- 1Sulfurfalse
- 2White Phosphorustrue
- 3Red Phosphorusfalse
- 4Iodinefalse
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Answer : 2. "White Phosphorus"
Q: Curie is the unit of:
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61655c5bd881f96172322089- 1Heatfalse
- 2Energyfalse
- 3Radioactivitytrue
- 4Temperaturefalse
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Answer : 3. "Radioactivity "
Q: Which metal floats when put in water?
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61275a37302e8b067c99aa84- 1Calciumtrue
- 2Nickelfalse
- 3Magnesiumfalse
- 4Potassiumfalse
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Answer : 1. "Calcium"
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