Match the following columns. Column I Column II (i)Boric acid (a)Food preservation (ii)Citric acid (b)Eyewash (iii)Oxalic acid (c)Ink stain remover (iv)Carbonic acid (d)Baking powder (e)Flavoured drinks

Column I Column II (i)Boric acid (b)Eyewash Boric acid has mild antibiotic properties against fungal or bacterial infection. Thus, it is used as an eyewash to cleanse or irritate the eyes. Column I Column II (ii)Citric acid (a)Food preservation Citric acid is used both as a natural flavour enhancer and preservative in a variety of foods. Column I Column II (iii) Oxalic acid (c) Ink stain remover Oxalic acid is used to remove ink or rust stains. Column I Column II Carbonic acid Flavoured drinks Carbonic acid in the drinks imparts the acidic flavour and a sweet sensation of the drink when consumed.

E M B I B E

All in One - ICSE Chemistry>Chapter 3 - Acids, Bases and Salts>CHAPTER EXERCISE>Q 11

EASY

10th ICSE

IMPORTANT

Earn 100

The table below shows information about three common indicators used in a school laboratory.

Indicator Colour in strong acid Colour in strong alkali pH colour change

Bromothymol blue Yellow Blue $7$

Screened methyl orange Red Yellow $4$

Phenolphthalein Colourless Pink $9$

What colour will be observed at pH $6$ if equal volumes of these three indicators are mixed together?

32.79% studentsanswered this correctly

Important Questions on Acids, Bases and Salts

MEDIUM

10th ICSE

IMPORTANT

All in One - ICSE Chemistry>Chapter 3 - Acids, Bases and Salts>CHAPTER EXERCISE>Q 12

Soluble salt like sodium sulphite can be prepared in laboratory by the process of

EASY

10th ICSE

IMPORTANT

All in One - ICSE Chemistry>Chapter 3 - Acids, Bases and Salts>CHAPTER EXERCISE>Q 13

An example of a complex salt is.

EASY

10th ICSE

IMPORTANT

All in One - ICSE Chemistry>Chapter 3 - Acids, Bases and Salts>CHAPTER EXERCISE>Q 14

What happens when a solution of an acid is mixed with a solution of a base in a test tube?
(i) The temperature of the solution increases.
(ii) The temperature of the solution decreases.
(iii) The temperature of the solution remains the same.
(iv) Salt formation takes place.

MEDIUM

10th ICSE

IMPORTANT

All in One - ICSE Chemistry>Chapter 3 - Acids, Bases and Salts>CHAPTER EXERCISE>Q 15

A sample of dry ammonium chloride was heated in a test tube. Pieces of damp litmus paper were used to test for any gases that were produced in the process.
Which of the statements is correct?

HARD

10th ICSE

IMPORTANT

All in One - ICSE Chemistry>Chapter 3 - Acids, Bases and Salts>CHAPTER EXERCISE>Q 16

Match the following columns.

Column I	Column II
(i)Boric acid	(a)Food preservation
(ii)Citric acid	(b)Eyewash
(iii)Oxalic acid	(c)Ink stain remover
(iv)Carbonic acid	(d)Baking powder
	(e)Flavoured drinks

MEDIUM

10th ICSE

IMPORTANT

All in One - ICSE Chemistry>Chapter 3 - Acids, Bases and Salts>CHAPTER EXERCISE>Q 17

Write a fully balanced equation for the following.

Magnesium metal is treated with dilute hydrochloric acid.

MEDIUM

10th ICSE

IMPORTANT

All in One - ICSE Chemistry>Chapter 3 - Acids, Bases and Salts>CHAPTER EXERCISE>Q 18

The

pH

of fresh milk is

6

. How do you think the

pH

will change as it turns into curd?

MEDIUM

10th ICSE

IMPORTANT

All in One - ICSE Chemistry>Chapter 3 - Acids, Bases and Salts>CHAPTER EXERCISE>Q 19

Name the compound which is insoluble in cold water but soluble in hot water.

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Indicator	Colour in strong acid	Colour in strong alkali	pH colour change
Bromothymol blue	Yellow	Blue	$7$
Screened methyl orange	Red	Yellow	$4$
Phenolphthalein	Colourless	Pink	$9$