Acids, Bases and Salts

1.
Tick (√ ) the correct options:
1. Which of the following is a mineral acid?
  1. citric acid
  2. oxalic acid
  3. glycolic acid
  4. sulphuric acid
2. Which of the following acids is present in lemons and oranges?
  1. citric acid
  2. lactic acid
  3. ascorbic acid
  4. acetic acid
2.
Tick (√ ) the correct options:
1. Bases turn red litmus to ______________.
  1. green
  2. yellow
  3. blue
  4. black
2. Methyl orange is a _____________ indicator.
  1. natural
  2. synthetic
  3. both of these
  4. none of these
3.
Tick (√ ) the correct options:
1. Which of the following substances turn blue litmus red?
  1. basic
  2. acidic
  3. neutral
  4. all of these
2. Which of the following is a property of an acid?
  1. sour taste
  2. sweet taste
  3. bitter taste
  4. salty taste
3. Milk of magnesia contains ____________ hydroxide.
  1. sodium
  2. potassium
  3. magnesium
  4. ammonium
4. A ___________ acid has a very small quantity of water.
  1. dilute
  2. concentrated
  3. neutral
  4. polluted
5. Baking soda solution turns pink china rose indicator green, it is ____________ solution.
  1. an acid
  2. a basic
  3. a neutral
  4. mineral
4.
Fill in the blanks:
1. Turmeric turns ________________ in basic solution.
2. Mineral acids are highly ________________ in nature.
3. Phenolphthalein is a ________________ indicator.
4. ________________ solution turn pink china rose indicator dark pink.
5. ________________ acid is present in vinegar.

5.

Match the following:

Column A	Column B
1. Tartaric acid	a. zinc carbonate
2. Turmeric	b. calcium oxide
3. Neutralisation reaction	c. human-made indicator
4. Quicklime	d. natural acids
5. Phenolphthalein indicator	e. gives salt and water
6. Calamine solution	f. natural indicator
7. Organic acids	g. sour taste

6.
Which acid is produced in our stomach?

19 more answer(s) available.