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WorksheetsClass 7 Quiz
Total questions: 10
Worksheet time: 5mins
The acid produced naturally in our stomach is
tartaric acid
citric acid
hydrochloric acid
sulphuric acid
Products of a neutralisation reaction are always
an acid and a base
an acid and a salt
a salt and water
a salt and a base
Turmeric is a natural indicator. it gives
Yellow in both acid and base
Yellow in acid and red in base
Pink in acid and yellow in base
Red in acid and blue in base
Phenolphthalein is a synthetic indicator and its colours in acidic and basic solutions, respectively are
red and blue
blue and red
pink and colourless
colourless and pink
When the soil is too basic, plants do not grow well in it. To improve its quality what must be added to the soil?
Organic matter
Quick lime
Slaked lime
Calamine solution
Which of the following set of substances contain acids?
Grapes, lime water
Vinegar, soap
Curd, milk of magnesia
Curd, vinegar
Which one of the following will turn red litmus blue?
Vinegar
Baking soda solution
Lemon juice
Soft drinks
Acids turns blue litmus
red
orange
blue
green
In case of indigestion, we use
Antipyretic
Antibiotic
Antacids
Alcohols
The colour of china rose indicator in a basic solution
Red
Pink
Green
Blue
