Chemistry Practice Question and Answer
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Q: The air is the example of:
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5ee0d53b1541492ae598124e- 1The solution of solid in the gasfalse
- 2The solution of gas in the gastrue
- 3The solution of liquid in the gasfalse
- 4The solution of liquid in the solidfalse
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Answer : 2. "The solution of gas in the gas"
Q: Which gas accumulates at the anode after electromagnetic decomposition of alumina?
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5feb077f00e3f71b828c2c39- 1Hydrogen gasfalse
- 2nitrogen gasfalse
- 3Carbon dioxide gasfalse
- 4oxygen gastrue
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Answer : 4. "oxygen gas"
Q: The anode in a dry cell consists of
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5f2cf8de21de6a117aefee33- 1Cadmiumfalse
- 2Graphitefalse
- 3Copperfalse
- 4Zinctrue
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Answer : 4. "Zinc "
Q: What is Neela Thoth?
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5f745654f66ef56de842b023- 1Copper sulphatetrue
- 2Calcium sulfatefalse
- 3Iron sulfatefalse
- 4sodium sulfatefalse
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Answer : 1. "Copper sulphate"
Q: Which is the first metal used by humans?
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5eeb13ffad25df5a63256bd3- 1Goldfalse
- 2Ironfalse
- 3Coppertrue
- 4Silverfalse
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Answer : 3. "Copper"
Q: The basis of classification of elements in modern periodic table is based on___.
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5f8fcca5c380c466d4dcef2c- 1Atomic numbertrue
- 2Atomic massfalse
- 3Atomic volumefalse
- 4Atomic densityfalse
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Answer : 1. "Atomic number "
Q: What is the increase in the ratio of oxygen in a chemical reaction?
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5f698eec397b1a52908c7d50- 1Reduction reactionfalse
- 2oxidation reactiontrue
- 3endothermic reactionfalse
- 4displacement reactionfalse
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Answer : 2. "oxidation reaction"
Q: Which of the following metals does not react with cold or hot water?
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5eeae018ad25df5a63247ecc- 1Nafalse
- 2Cafalse
- 3Mgfalse
- 4Fetrue
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Answer : 4. "Fe"
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