Chemistry Practice Question and Answer
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Q: How many categories of elements are divided on the basis of properties?
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5eeadf0fad25df5a63247e87- 14false
- 26false
- 33true
- 42false
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Answer : 3. "3"
Q: Gold is alloyed with which metal to make it harder?
1048 05f571a5b79cfd646ddd37291
5f571a5b79cfd646ddd37291- 1Cfalse
- 2Snfalse
- 3Cutrue
- 4Agfalse
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Answer : 3. "Cu"
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: Chemical structure of pearl is-
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5f72ec102d9d25248e04ce83- 1Calcium carbonatefalse
- 2Calcium carbonate and magnesium carbonatetrue
- 3Calcium chloridefalse
- 4Calcium sulfatefalse
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Answer : 2. "Calcium carbonate and magnesium carbonate"
Q: Horizontal columns are called in the Periodic table.
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5f8fcd22f28f4b47be4b616c- 1Periodictrue
- 2Classfalse
- 3Electrical chemical sequencefalse
- 4Non-metalfalse
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Answer : 1. "Periodic"
Q: What is the increase in the ratio of oxygen in a chemical reaction?
1032 05f698eec397b1a52908c7d50
5f698eec397b1a52908c7d50- 1Reduction reactionfalse
- 2oxidation reactiontrue
- 3endothermic reactionfalse
- 4displacement reactionfalse
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Answer : 2. "oxidation reaction"
Q: Which of the following gases turn lime water milky?
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609e4dcc1679a537e39efa2e- 1Carbon Dioxidetrue
- 2Oxygenfalse
- 3Nitrogenfalse
- 4Hydrogenfalse
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Answer : 1. "Carbon Dioxide "
Q: Gasohol is –
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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 "
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