Chemistry Practice Question and Answer
8 4 Q:
61275af7302e8b067c99af50 4 Q:
609e4cd76397877f31963e9f 4 Q:
6576edf47274ac7b5885d375 Answer : 3. "Ethanol + carbon dioxide + energy"
4 Q:
61276441dbe92e068b9154b4 4 Q:
5ef2f5d481a47f2e7aec098b 4 Q:
5f698f9a558d255013b2b659 4 Q:
5f48d6b3e7f09063e630a3d9 4 Q:
62f33ba13342ab1184379169
Q: Food is cooked in a metal utensil because it is the source of heat.
1300 061275af7302e8b067c99af50
61275af7302e8b067c99af50- 1is a good conductortrue
- 2is a semiconductorfalse
- 3is a bad conductorfalse
- 4is both a conductor and a good conductorfalse
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Answer : 1. "is a good conductor"
Q: What is the common name of CaoCl2?
1298 0609e4cd76397877f31963e9f
609e4cd76397877f31963e9f- 1Washing Sodafalse
- 2Bleaching Powdertrue
- 3Baking Powderfalse
- 4Baking Sodafalse
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Answer : 2. "Bleaching Powder "
Q: Which of the following products are formed during anaerobic respiration in yeast?
1298 06576edf47274ac7b5885d375
6576edf47274ac7b5885d375- 1Acetic acid + energyfalse
- 2Lactic acid + carbon dioxide + energyfalse
- 3Ethanol + carbon dioxide + energytrue
- 4Lactic acid + energyfalse
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Answer : 3. "Ethanol + carbon dioxide + energy"
Explanation :
1. Yeast breaks down glucose, producing ethanol and carbon dioxide and energy.
2. Yeast reacts anaerobically.
Q: The alloy of lead and tin is called?
1298 061276441dbe92e068b9154b4
61276441dbe92e068b9154b4- 1Steelfalse
- 2metalloidsfalse
- 3Gun Matonfalse
- 4soldertrue
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Answer : 4. "solder"
Q: Chemically " Plaster of Paris " is –
1287 05ef2f5d481a47f2e7aec098b
5ef2f5d481a47f2e7aec098b- 1Calcium oxidefalse
- 2Calcium oxalatefalse
- 3Calcium Sulphatetrue
- 4Calcium Carbonatefalse
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Answer : 3. "Calcium Sulphate "
Q: Sodium chloride and water are formed by the reaction of sodium hydroxide and hydrochloric acid. What is this reaction?
1279 05f698f9a558d255013b2b659
5f698f9a558d255013b2b659- 1neutralizationtrue
- 2Disintegrationfalse
- 3combinationfalse
- 4precipitationfalse
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Answer : 1. "neutralization"
Q: A radio-active substance has a half life of six months. Three-fourth of the substance will decay in____.
1278 05f48d6b3e7f09063e630a3d9
5f48d6b3e7f09063e630a3d9- 1Six monthsfalse
- 2Ten monthsfalse
- 3Twelve monthstrue
- 4Twenty four monthsfalse
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Answer : 3. "Twelve months"
Q: Alpha particles are ___________.
1275 062f33ba13342ab1184379169
62f33ba13342ab1184379169- 1twice the mass of beta particlesfalse
- 2negatively chargedfalse
- 3just like helium nucleitrue
- 4lower in ionizing power as compared to gamma raysfalse
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Answer : 3. "just like helium nuclei"
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