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प्रश्न
Phenolphthalein is a synthetic type of indicator.
पर्याय
True
False
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उत्तर
Phenolphthalein is a synthetic type of indicator - True
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संबंधित प्रश्न
Why do HCl, HNO3, etc., show acidic characters in aqueous solutions while solutions of compounds like alcohol and glucose do not show acidic character?
Dry HCl gas does not change the colour of dry blue litmus paper. Why?
How is the concentration of hydronium ions (H3O+) affected when a solution of an acid is diluted?
How is the concentration of hydroxide ions (OH−) affected when excess base is dissolved in a solution of sodium hydroxide?
Write a word equation and then a balanced equation for the reaction taking place when:
Dilute sulphuric acid reacts with aluminium powder.
Complete and balance the following chemical equations:
Zn (s) + HCI (aq) →
Complete and balance the followingchemicalequations:
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With the help of labelled diagrams, describe an activity to show that acids produce ions only in aqueous solutions.
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Write any four physical properties of acids.
Acids turn blue litmus paper to ______.
Calcium phosphate is present in tooth enamel. Its nature is
If a few drops of a concentrated acid accidentally spills over the hand of a student, what should be done?
In an attempt to demonstrate electrical conductivity through an electrolyte, the apparatus setup. Which among the following statement(s) is(are) correct?
- Bulb will not glow because electrolyte is not acidic
- Bulb will glow because NaOH is a strong base and furnishes ions for conduction.
- Bulb will not glow because circuit is incomplete
- Bulb will not glow because it depends upon the type of electrolytic solution
Acids present in fruits and vegetables are called ______ acids.
Vinegar is ______ in taste.
Solutions of acids conduct ______.
______ change the colour of the indicators.
The taste of acid is ______.
