Chemistry Practice Question and Answer
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Q: Of the options listed below, the speed of sound is highest in _____ at 25°C.
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64391e3719f0af16e3835d86- 1Ethanolfalse
- 2Aluminiumtrue
- 3Oxygenfalse
- 4Hydrogenfalse
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Answer : 2. "Aluminium "
Q: Which of the following is known as artificial silk?
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642c1b64ed76c064b866560c- 1Acrylicfalse
- 2Nylonfalse
- 3Polyesterfalse
- 4Rayontrue
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Answer : 4. "Rayon"
Q: Which of the following is considered to be the fifth state of matter?
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64242bd8dcb650c14569c06c- 1Bose-Einstein condensatetrue
- 2Plasmafalse
- 3Solidfalse
- 4Gasfalse
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Answer : 1. "Bose-Einstein condensate "
Q: Which of the following is incorrect with reference to hypophysis?
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63c92589be373f6c954b8007- 1It lies a bony depression called sell turcicafalse
- 2Connected to hypothalamus through infundibulumfalse
- 3Anatomically divided into adeno-hypophysis and neurohypophysisfalse
- 4Neurohypophysis synthesizes ADH and OTtrue
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Answer : 4. "Neurohypophysis synthesizes ADH and OT"
Q: Electronic configuration of the outer shell of the element Gd with atomic number 64 is
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63c923ad1e8e3f3e1a3a6f02- 14f4 5df 6s1false
- 24f3 5df 6s2false
- 34f5 5d4 6s1false
- 44f7 5d1 6s2true
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Answer : 4. "4f7 5d1 6s2"
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)
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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 will be the work done by 3 moles of an ideal gas when it expands spontaneously in vacuum?
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63c922461c47ef334be202d7- 1Zerotrue
- 2Infinitefalse
- 33 joulesfalse
- 49 joulesfalse
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Answer : 1. "Zero "
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"
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