Question

2.
Which of the following is not a property of bases?
a. Bases turn blue litmus red.
b. Bases turn the colour of turmeric indicator to red.
c. Bases have pH above 7 on pH scale.
d. They usually taste bitter.
3. Which of these statement is correct?
a. Both acids and bases change colour of all indicators.
b. Indicator can be either natural or synthetic.
c. Indicator gives a colour change with acid only.
d. An indicator changes colour with base only.
4. Which of the following can neutralise an acid?
a. Common salt
b. Vinegar
C. Baking soda
d. Magnesium chloride​

Answer 1

A and B are answer of 2

B is the answer of 3

C is the answer of 4