Font size
WorksheetsAcids Bases and Salts
Total questions: 15
Worksheet time: 8mins
Curd, lemon juice, orange juice and vinegar taste sour because they contain ____________
neutral
acids
salts
bases
The word acid comes from the ________ word _________ which means __________
Greek word acid which means salty
Latin word acere which means sour
Persian word acide which means bitter
French word acer which means sweet
Substances which taste bitter and feel soapy on touching are known as
Acids
Bases
Salts
Neutral
Special type of substances are used to test whether a substance is acidic or basic. These substances are known as __________
Litmus paper
China rose
Turmeric
Indicators
The most commonly used natural indicator is _________ it is extracted from_________
China rose extracted from China rose plant
Turmeric extracted from turmeric plant
Litmus extracted from lichens
phenolphthalein extracted from lichens
The solutions which do not change colour of either red or blue litmus are known as __________ solutions.
neutral
acidic
basic
salty
china rose indicator turns acidic solutions to_________
dark pink
green
yellow
red
china rose indicator turns basic solutions to _________
dark pink
green
yellow
red
when a solution is basic phenolphthalein gives a _________ colour.
blue
yellow
pink
red
Phenolphthalein remains __________ when a solution is acidic.
blue
yellow
pink
colourless
In neutralisation reaction a new substance is formed. This is called ________
acid
base
salt
sugar
The reaction between an acid and base is known as ______________. ___________ and _____are produced in this process with the evolution of heat.
choose more than one option
neautralisation
phenolphthalein
water
salt
The following reaction is a example of what?
Hydrochloric acid [HCI] + Sodium hydroxide [NaOH] = Sodium chloride [NaCL] + Water
litmus extraction
phenolphthalein
neutralisation
acid rain
To relieve indigestion, we take an antacid such as _______________________, which contains magnesium hydroxide.
milk of magnesia
magnesium hydroxide
milk of hydroxide
calcium hydroxide
the effect of ant bite {formic acid} can be neutralised by rubbing ___________________ which contains zinc carbonate.
slaked lime
milk of magnesia
quick lime
calamine lotion
