Chemistry GK Practice Question and Answer
8 4 Q:
64b51d2e568e7ff594b01e05 Answer : 1. "Alcohol"
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Q: Identify a class of compounds that has a functional group –OH.
1189 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: An acid must contain mainly one atom which reacts with the metal to produce a gas.
1182 05f697b4cf9079a64e3a5161a
5f697b4cf9079a64e3a5161a- 1Hydrogentrue
- 2oxygenfalse
- 3Nitrogenfalse
- 4Ammoniafalse
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Answer : 1. "Hydrogen"
Q: What is an oxidation-reduction reaction called?
1179 05feb01ebf6205c4d625d0454
5feb01ebf6205c4d625d0454- 1endothermic reactionfalse
- 2Redox reactiontrue
- 3precipitation reactionfalse
- 4exothermic reactionfalse
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Answer : 2. "Redox reaction"
Q: Which of the following are strongly acidic?
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5f697e6a397b1a52908c0aac- 1pH = 7false
- 2pH = 14false
- 3pH = 0true
- 4pH = 3false
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Answer : 3. "pH = 0"
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: Which metal reacts with water?
1143 061275b3bb05363065a00517c
61275b3bb05363065a00517c- 1goldfalse
- 2Potassiumtrue
- 3Silverfalse
- 4Leadfalse
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Answer : 2. "Potassium"
Q: Which gas is deposited at the anode on electrolysis of alumina?
1141 061275989dbe92e068b90f6be
61275989dbe92e068b90f6be- 1Hydrogen gasfalse
- 2Nitrogen gasfalse
- 3carbon dioxide gasfalse
- 4Oxygen gastrue
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Answer : 4. "Oxygen gas"
Q: What is the percentage of carbon in steel?
1123 0612759cdb05363065a00450e
612759cdb05363065a00450e- 13 %false
- 24 %false
- 32 %true
- 45 %false
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Answer : 3. "2 %"
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