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Total questions: 14
Worksheet time: 7mins
What is the pH of a neutral solution?
pH 7
pH 11
pH 4
pH 1
A liquid has pH of 1. What type of liquid is it?
Alkali
Acid
Neutral
What colour is universal indicator when the solution is neutral?
Blue
Red
Green
Orange
What sort of reaction happens when an acid and an alkali are mixed up?
It becomes a strong acid
It becomes a strong alkali
It becomes a neutral solution
Where does the acid in your mouth comes from?
From the air
From water
From the food we eat
Why is an alkaline substance dropped into lakes in some countries?
So the lake is neutralized for animals
So the lake becomes alkaline
What is the thing that farmers spread onto acidic soil?
Baking Soda
Bleach
Lime
What is a fair test?
A fair test is a test in which all variables are same except one.
A fair test is a test in which all variables are same.
A fair test is a test in which all variables are different.
“Litmus changes into red when it’s in an acid and changes to blue when it’s into a alkali, it is purple in a neutral solution.” What is the scientific term for a substance that changes colour in this way?
Litmus paper
Acid
Indicator
What colour does litmus paper show in pure water?
Green
Red
Blue
Does not show any colour
What colour is litmus in a solution with pH of 4?
Red
Light orange
Yellow
Green
What type of medicine is used to neutralize acid in your stomach?
Antacids
Diabetes
A pH of below 7 is what?
Alkaline solutions
Acidic solutions
Neutral solutions
What does universal indicator show colour for salty water?
Yellow
Green
Orange
purple
