Chemistry Practice Question and Answer
8 4 Q:
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5ef2efc081a47f2e7aebe259 4 Q:
6576edf47274ac7b5885d375 Answer : 3. "Ethanol + carbon dioxide + energy"
4 Q:
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6113d4d088e0566940a8176d 4 Q:
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Q: Which of the following metals burns with a golden flame?
1908 05eeadfdceee45c3b837a2c8f
5eeadfdceee45c3b837a2c8f- 1Znfalse
- 2Kfalse
- 3Mgfalse
- 4Natrue
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Answer : 4. "Na"
Q: Is zinc ore?
1902 05feb073bd6478d50160f1f48
5feb073bd6478d50160f1f48- 1zinc bladetrue
- 2Bauxitefalse
- 3sodium chloridefalse
- 4Sinawarfalse
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Answer : 1. "zinc blade"
Q: Gasohol is –
1897 05ef2efc081a47f2e7aebe259
5ef2efc081a47f2e7aebe259- 1Any gas dissolved in alcoholfalse
- 2Ethyl alcohol + Kerosene oilfalse
- 3Ethyl alcohol + Petroltrue
- 4Natural Gas + Ethyl alcoholfalse
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Answer : 3. "Ethyl alcohol + Petrol "
Q: Which of the following products are formed during anaerobic respiration in yeast?
1893 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 metal does not react with oxygen even at higher temperatures?
1886 05feb081400e3f71b828c2fed
5feb081400e3f71b828c2fed- 1Ironfalse
- 2Goldtrue
- 3Potassiumfalse
- 4Aluminumfalse
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Answer : 2. "Gold"
Q: Methane an air pollutant is produced ___________
1886 06113d4d088e0566940a8176d
6113d4d088e0566940a8176d- 1by burning of coal in insufficient airfalse
- 2by digestion of food by animalstrue
- 3by action of ultraviolet light on nitrogenous compounds.false
- 4as a by-product of manufacturing ammoniacal fertilizersfalse
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Answer : 2. "by digestion of food by animals"
Q: What is the acid found in bees?
1885 05eeb1221ad25df5a63256400
5eeb1221ad25df5a63256400- 1Formic acidtrue
- 2Acetic acidfalse
- 3Carbolic acidfalse
- 4Oxalic acidfalse
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Answer : 1. "Formic acid"
Q: What substance is formed by the action of chlorine gas on dry quenched lime?
1883 05f697f28e124a354ae5c0c7f
5f697f28e124a354ae5c0c7f- 1calcium chloridefalse
- 2bleaching powdertrue
- 3Hydrochloric acidfalse
- 4Waterfalse
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Answer : 2. "bleaching powder"
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