Chemistry Practice Question and Answer
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Q: Which of the following reactions always have pairs together?
1105 05f698f46558d255013b2b2b6
5f698f46558d255013b2b2b6- 1combination and dissolutionfalse
- 2precipitation and displacementfalse
- 3neutralization and displacementfalse
- 4Oxidation and degradationtrue
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Answer : 4. "Oxidation and degradation"
Q: Which metal does not react with oxygen even at high temperature?
1100 0612759fb302e8b067c99a4be
612759fb302e8b067c99a4be- 1Ironfalse
- 2goldtrue
- 3Potassiumfalse
- 4Aluminumfalse
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Answer : 2. "gold"
Q: The catalyst is a substance through which the rates of chemical reactions ________.
1098 06082b13391a9f43a97b71fca
6082b13391a9f43a97b71fca- 1Decreasesfalse
- 2Changesfalse
- 3Increasestrue
- 4None of thesefalse
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Answer : 3. "Increases "
Q: Which compound is formed when copper is burnt in air?
1094 0612764bd93f02206607eefa2
612764bd93f02206607eefa2- 1copper hydroxidefalse
- 2copper hydridefalse
- 3Copper Oxidetrue
- 4nothingfalse
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Answer : 3. "Copper Oxide"
Q: The alloy of lead and tin is called?
1094 061276441dbe92e068b9154b4
61276441dbe92e068b9154b4- 1Steelfalse
- 2metalloidsfalse
- 3Gun Matonfalse
- 4soldertrue
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Answer : 4. "solder"
Q: In which process is a protective zinc coating applied on iron to prevent it from rusting?
1091 060927508cc29175f0f879192
60927508cc29175f0f879192- 1Galvanisationtrue
- 2Annealingfalse
- 3Smeltingfalse
- 4Weldingfalse
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Answer : 1. "Galvanisation"
Q: What is the function of a catalyst in a chemical reaction?
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63c921fdb338bc336f0ddb80- 1Decrease rate constant of reactionfalse
- 2Increases activation energy of reactionfalse
- 3Reduces enthalpy of reactionfalse
- 4Does not affect the equilibrium constant of reactiontrue
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Answer : 4. "Does not affect the equilibrium constant of reaction"
Q: Sodium chloride and water are formed by the reaction of sodium hydroxide and hydrochloric acid. What is this reaction?
1087 05f698f9a558d255013b2b659
5f698f9a558d255013b2b659- 1neutralizationtrue
- 2Disintegrationfalse
- 3combinationfalse
- 4precipitationfalse
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Answer : 1. "neutralization"
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