Chemistry Practice Question and Answer
8 Q: Which of the following products are formed during anaerobic respiration in yeast?
1157 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: How many carbon atoms are joined in buckminsterfullerene?
1151 062ebdd1b4404a856fa1fc772
62ebdd1b4404a856fa1fc772- 130false
- 290false
- 360true
- 4120false
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Answer : 3. "60"
Q: Which of the following is not correct about diffusion?
1151 05f869edfb7ad805e26c102b6
5f869edfb7ad805e26c102b6- 1The rate of diffusion of gases is higher than that of solid and liquid.false
- 2Diffusion is possible only when the particles of matter are in constant motion.false
- 3The rate of diffusion of gases depends on their volume.true
- 4Particles in diffusion move from high concentration to low concentration.false
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Answer : 3. "The rate of diffusion of gases depends on their volume."
Q: Find the temperature at which the below reaction will be in equilibrium if the enthalpy and entropy change for the reaction is 30 Kj mol-1 and 105 J K-1 mol-1 respectively
Br2(l) + Cl2(g) → 2BrCl(g)
1149 063c922a87efeed32fc213a76
63c922a87efeed32fc213a76Br2(l) + Cl2(g) → 2BrCl(g)
- 1273 Kfalse
- 2300 Kfalse
- 3450 Kfalse
- 4285.7 Ktrue
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Answer : 4. "285.7 K"
Q: What do you call the drugs that bind to the receptor site and inhibit its natural function?
1141 0649a98d3c7d7c7e0672b7673
649a98d3c7d7c7e0672b7673- 1Antidepressantsfalse
- 2Agonistfalse
- 3Antagoniststrue
- 4Depressantsfalse
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Answer : 3. "Antagonists"
Explanation :
1. Name: Antagonist
2. Mechanism of action: By binding to the surface of the receptor, they cause opposition to the natural function.
Q: How are 'anions' formed?
1139 0609e4c75e941dd6183d99e45
609e4c75e941dd6183d99e45- 1Addition of electrontrue
- 2Removal of electronfalse
- 3Addition of protonfalse
- 4Removal of protonfalse
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Answer : 1. "Addition of electron "
Q: Melting and boiling points of ionic compounds -
1137 061275b84b05363065a005e7a
61275b84b05363065a005e7a- 1contains the followingfalse
- 2are hightrue
- 3are normalfalse
- 4All the statements are truefalse
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Answer : 2. "are high"
Q: What are the substances that participate in a reaction?
1134 05f698fe6f9079a64e3a5b205
5f698fe6f9079a64e3a5b205- 1considerationfalse
- 2Deductivefalse
- 3reactantstrue
- 4Oxidizerfalse
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