Chemistry Questions Practice Question and Answer
8 4 Q:
5ee85e95109b5d6e015e3b7b 4 Q:
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63c7c1e71c47ef334bdd967e 4 Q:
647de965e72c4684a1dcb8b3 4 Q:
6576edf47274ac7b5885d375 Answer : 3. "Ethanol + carbon dioxide + energy"
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Q: If the pH value of a substance is lower than 7, it would be considered as–
1488 05ee85e95109b5d6e015e3b7b
5ee85e95109b5d6e015e3b7b- 1Neutralfalse
- 2Basefalse
- 3Acidtrue
- 4Ionfalse
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Answer : 3. "Acid"
Q: Atomic number of which of the following elements is greater than that of Copper?
1462 06113d25688e0566940a80fd8
6113d25688e0566940a80fd8- 1Zinctrue
- 2Manganesefalse
- 3Ironfalse
- 4Chromiumfalse
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Answer : 1. "Zinc"
Q: Which of the following is the strongest hydracid known?
1455 063c7c1e71c47ef334bdd967e
63c7c1e71c47ef334bdd967e- 1HCNfalse
- 2Hclo4true
- 3HCLfalse
- 4Hno3false
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Answer : 2. "Hclo4"
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 products are formed during anaerobic respiration in yeast?
1394 06576edf47274ac7b5885d375
6576edf47274ac7b5885d375- 1Acetic acid + energyfalse
- 2Lactic acid + carbon dioxide + energyfalse
- 3Ethanol + carbon dioxide + energytrue
- 4Lactic acid + energyfalse
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Answer : 3. "Ethanol + carbon dioxide + energy"
Explanation :
1. Yeast breaks down glucose, producing ethanol and carbon dioxide and energy.
2. Yeast reacts anaerobically.
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: Which gas is known as 'noble gas' ?
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5ef2f5457c1ec61320b14d6b- 1Heliumtrue
- 2Carbon dioxidesfalse
- 3Hydrogenfalse
- 4Oxygenfalse
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Answer : 1. "Helium "
Q: Curie is the unit of:
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61655c5bd881f96172322089- 1Heatfalse
- 2Energyfalse
- 3Radioactivitytrue
- 4Temperaturefalse
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Answer : 3. "Radioactivity "
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