2690060
Description
Quiz by lisawinkler10, updated more than 1 year ago
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Created by lisawinkler10
over 9 years ago
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Question 1
Question
Which two are examples of oxidising agents?
Answer
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Acidified Potassium Manganate(VII)
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Aqueous Potassium Iodide
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Anhydrous Calcium Chloride
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Concentrated Sulphuric Acid
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Acidified Potassium Dichromate(VI)
Question 2
Question
What is the colour change for the oxidising agent Acidified Potassium Manganate(VII)?
Answer
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(purple to colourless)
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(orange to green)
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(green to orange)
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(white to blue)
Question 3
Question
Copper(II) chloride and copper(II) carbonate are blue
Answer
- True
- False
Question 4
Question
What temperature is optimum for enzymes in yeast in fermentation? (degrees Celsius)
Answer
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37
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60
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62
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20
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35
Question 5
Question
What is a bung used for in fermentation?
Answer
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let Carbon Dioxide out and prevent entry of Oxygen
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let Oxygen out and prevent entry of Carbon Dioxide
Question 6
Question
Tick all reasons why the fermentation reaction might stop.
Answer
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An excess in conc. of alcohol
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The yeast dies
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Glucose finishes up
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Nepal earthquake
Question 7
Question
What might you use to cool the gases in fractional distillation by absorbing heat from them
Answer
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Condenser
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Glass beads
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Liquifying column
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Copper wire
Question 8
Question
Which indicator is yellow at a low pH and blue at a high pH?
Answer
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Universal Indicator
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Methyl Orange
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Phenolphtalein
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Bromothymol
Question 9
Question
What is the colour change when testing for water with Anhydrous Cobalt(II) Chloride
Answer
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white to blue
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blue to pink
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pink to green
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blue to colourless
Question 10
Question
Complete the equation: Acid + Carbonate →
Answer
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Salt + Water + Carbon Dioxide
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Salt + Carbon Dioxide
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Salt + Water + Carbon
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Water + Carbon Dioxide
Question 11
Question
Complete the equation: Acid + Alcohol →
Answer
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Ester + Water
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Ester + Hyrdogen
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Alkene + Hydrogen
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Alkene + Water
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