Acid, Bases and Salts

Question 1

What is the reaction of acidic and basic substances on a litmus paper.

Answer 1

Red in acids and blue in basics.

Question 2

What is the reaction of acidic and basic substances on a turmeric paper.

Question 3

What color does litmus paper turn in the presence of an acid?

Answer 3

Red

Question 4

What color does litmus paper turn in the presence of a base?

Answer 4

Blue

Question 5

True or False: China rose indicator turns pink in acidic solutions.

Answer 5

True

Question 6

What color does turmeric paper turn in basic solutions?

Answer 6

Red

Question 7

Fill in the blank: The process of neutralization involves the reaction of an acid with a _____ to form salt and water.

Answer 7

base

Question 8

What is added when soil is too acidic or basic.

Answer 8

Acidic: Quick lime/Slaked Lime
Basic: Organic Compost.

Question 9

What applied on an ant bite?

Answer 9

Calamine solution Which contains zinc carbonate or Baking soda which contains sodium hydrogencarbonate.

Question 10

Which of the following is a natural indicator? A) Litmus B) Phenolphthalein C) China rose D) All of the above

Answer 10

C) China rose

Question 11

What happens to turmeric paper in acidic solutions?

Answer 11

It remains yellow.

Question 12

True or False: Neutralization reactions always produce a gas.

Answer 12

False

Question 13

What is produced when an acid reacts with a base?

Answer 13

Salt and water

Question 14

Fill in the blank: A solution with a pH of 7 is considered _____.

Answer 14

neutral

Question 15

Which indicator would you use to test for acidity in a solution?

Answer 15

Litmus paper

Question 16

Multiple Choice: Which of the following changes color in the presence of a base? A) China rose B) Turmeric C) Litmus D) All of the above

Answer 16

D) All of the above

Question 17

What is the role of indicators in acid-base reactions?

Answer 17

To show the presence of acids or bases by changing color.