Chemistry Practice Question and Answer
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Q: Which of the following is an organic compound with the formula C6H4Cl2 that is used as a fumigant insecticide to control cloth months?
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6441214c72ca731a9945cdd8- 1Paradichlorobenzenetrue
- 2Chlorobenzenefalse
- 3Benzoyl chloridefalse
- 4Ethylbenzenefalse
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Answer : 1. "Paradichlorobenzene"
Q: What type of reaction is corrosion?
1672 05f698e99473e9b04bc1fb350
5f698e99473e9b04bc1fb350- 1Reduction reactionfalse
- 2precipitation reactionfalse
- 3oxidation reactiontrue
- 4combination reactionfalse
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Answer : 3. "oxidation reaction"
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 metal floats when put in water?
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61275a37302e8b067c99aa84- 1Calciumtrue
- 2Nickelfalse
- 3Magnesiumfalse
- 4Potassiumfalse
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Answer : 1. "Calcium"
Q: Which metal does not react with oxygen even at high temperature?
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612759fb302e8b067c99a4be- 1Ironfalse
- 2goldtrue
- 3Potassiumfalse
- 4Aluminumfalse
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Answer : 2. "gold"
Q: The tendency to receive electrons is called-
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5f745a3ebb26e87e5eea3a72- 1Oxidationfalse
- 2Reductiontrue
- 3Catalysisfalse
- 4Motivationfalse
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Answer : 2. "Reduction"
Q: Atomic number of which of the following elements is greater than that of Copper?
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6113d25688e0566940a80fd8- 1Zinctrue
- 2Manganesefalse
- 3Ironfalse
- 4Chromiumfalse
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Answer : 1. "Zinc"
Q: Alkali metal can
1653 05f437f8497c6dd29b38f2e3f
5f437f8497c6dd29b38f2e3f- 1Be highly unstable at room temperaturefalse
- 2vaporize at room temperaturefalse
- 3easily lose electronstrue
- 4easily gain electronsfalse
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Answer : 3. "easily lose electrons "
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