Chemistry Practice Question and Answer
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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: Crystallization is an example of
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5f742bd338027c5313ed6bc9- 1Physical changetrue
- 2Chemical Transformationfalse
- 3Chemical reactionfalse
- 4Galvanizationfalse
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Answer : 1. "Physical change"
Q: Which of the following is purified by Elevation method-
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5f72f3dea921aa16e68288a7- 1Naphthalenetrue
- 2Etherfalse
- 3Benzoic acidfalse
- 4None of thesefalse
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Answer : 1. "Naphthalene"
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: Which gas is produced when the dilute acids are reacted with metals?
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5f6c2b8fec13dd7480fadce1- 1Hydrogentrue
- 2nitrogenfalse
- 3Carbon dioxidefalse
- 4Oxygenfalse
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Answer : 1. "Hydrogen"
Q: Boiling Point of a liquid due to impurities
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5f6c3046b2d86d455070b891- 1increasestrue
- 2decreasesfalse
- 3remains unchangedfalse
- 4None of thesefalse
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Answer : 1. "increases"
Q: Potassium nitrate is used in
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5f6c2e19ec13dd7480faf0f8- 1medicinefalse
- 2saltfalse
- 3glassfalse
- 4fertilisertrue
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Answer : 4. "fertiliser"
Q: What is liberated when the base is dissolved in water?
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5f699109397b1a52908c9799- 1(OH) - iontrue
- 2H + ionfalse
- 3Both ionsfalse
- 4No ionfalse
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Answer : 1. "(OH) - ion"
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