Questions
The process of breaking of a solid ionic compound into its constituent ions is called
- hydration
- acidification
- dissociation
- neutralization
Which of the following is the most acidic?
- Lime–water
- Blood
- Soft drink
- Eggs
For a substance to behave as an electrolyte it should produce _____ when dissolved in water.
- H+ ion
- OH– ion
- electrons
- ions
Acetic acid can be classified as
- strong acid
- weak acid
- strong base
- weak base
Which of the following is the most basic?
- Vinegar
- Wine
- Orange
- Washing soda solution
Phenolphthalein indicator shows the following colour in the acidic medium.
- Red
- Blue
- Colourless
- Pink
If litmus paper is dipped in a solution of sodium hydroxide it will turn
- yellow
- green
- blue
- purple
The acidity of soil can be controlled by the addition of
- CaO
- NaOH
- KOH
- Mg(OH)2
Which of the following is an example of an alkali?
- Copper oxide
- Calcium oxide
- Sodium hydroxide
- Lime stone
If few drops of phenolphthalein indicator are added to lemon juice, then it will show
- pink colour
- yellow colour
- no colour
- orange colour
Which of the following is the most acidic of all?
- Milk
- Coffee
- Lemon juice
- Soft drink
If tomato juice is added in a beaker containing methyl orange indicator, it will show
- green colour
- red colour
- yellow colour
- blue colour
In which of the following solutions, phenolphthalein indicator will give a pink colour?
- CH3COOH
- H2CO3
- HNO3
- Ca(OH)2
If the pH of a solution is zero then the solution is
- highly basic
- weakly basic
- weakly acidic
- highly acidic
If the pH value of solution is 7, then the nature of the solution will be
- neutral
- acidic
- basic
- none of these
Which acid is present in lemon juice?
- Acetic acid
- Citric acid
- Abscissic acid
- Linoleic acid
KOH can be classified as
- strong acid
- weak acid
- strong base
- weak base
An acidic solution contains a high concentration of
- H+ ions
- OH– ions
- K+ ions
- Na+ ions