Chemistry GK Practice Question and Answer
8 Q: Gold is used to make jewelery?
981 061275c5e302e8b067c99c5ab
61275c5e302e8b067c99c5ab- 122 caratstrue
- 224 caratfalse
- 316 caratsfalse
- 423 caratsfalse
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Answer : 1. "22 carats"
Q: Which gas is deposited at the anode on electrolysis of alumina?
980 061275989dbe92e068b90f6be
61275989dbe92e068b90f6be- 1Hydrogen gasfalse
- 2Nitrogen gasfalse
- 3carbon dioxide gasfalse
- 4Oxygen gastrue
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Answer : 4. "Oxygen gas"
Q: Which of the following are strongly acidic?
970 05f697e6a397b1a52908c0aac
5f697e6a397b1a52908c0aac- 1pH = 7false
- 2pH = 14false
- 3pH = 0true
- 4pH = 3false
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Answer : 3. "pH = 0"
Q: In 1845, which German chemist published a method for the synthesis of acetic acid, a natural product containing two carbon atoms?
967 0649aa86b1a612ce001f66c19
649aa86b1a612ce001f66c19- 1Friedrich Wohlerfalse
- 2Marcellin Berthelotfalse
- 3Joseph Gay-Lussacfalse
- 4Hermann Kolbetrue
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Answer : 4. "Hermann Kolbe"
Explanation :
1. In 1845, the German chemist who published a method for the synthesis of 'acetic acid', a natural product containing two carbon atoms, was Hermann Kolbe.
2. He created carbon disulfide with chlorine, and the end result was carbon tetrachloride.
Q: Which of the following metals is available in wire form?
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61275da3302e8b067c99cde6- 1Calciumfalse
- 2Magnesiumfalse
- 3Coppertrue
- 4Leadfalse
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Answer : 3. "Copper"
Q: Identify a class of compounds that has a functional group –OH.
960 064b51d2e568e7ff594b01e05
64b51d2e568e7ff594b01e05- 1Alcoholtrue
- 2Ethanefalse
- 3Ketonefalse
- 4Aldehydefalse
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Answer : 1. "Alcohol"
Explanation :
1. That class of compounds, which contain a functional group –OH, is called alcohol.
2. Alcohols contain a hydrogen atom and a hydroxyl group (-OH) along with a carbon atom.
3. The hydroxyl group is a polar group, which makes the alcohol soluble in water.
Q: What is the percentage of carbon in steel?
924 0612759cdb05363065a00450e
612759cdb05363065a00450e- 13 %false
- 24 %false
- 32 %true
- 45 %false
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Answer : 3. "2 %"
Q: Which of the following are metals found in free state in the earth's crust?
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61275de893f02206607eb973- 1Agtrue
- 2Mgfalse
- 3Alfalse
- 4Znfalse
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