Examples of Acids,Bases

Q. What is the formula of sulphuric acid?

Q.

Name the acid present in apple, tomato, grapes, rancid butter, bees, and oranges.

Q.

How does vinegar affect plant growth?

Q.

What is the pH of nitrogen dioxide?

Q.

Is salt an alkali?

Q. Distinguish between mineral acid and organic acid

Q.

On opening the soda water Bottle the dissolved CO2 comes out. Would the pH of the solution increase or decrease as the gas comes out ?explain your answer.

Q.

Question 22.
Which of the following is not a mineral acid?

(a) Hydrochloric acid
(b) Citric acid
(c) Sulphuric acid
(d) Nitric acid

Q.

Which of the following is the correct molecular formula of sulphuric acid?

1. HSO₂

2. H₂SO₄

3. HSO₄

4. H₄SO₂

Q. Classify the following substances under three headings: (a) strong electrolytes (b) weak electrolytes (c) non-electrolytes.
Acetic acid, ammonium chloride, ammonium hydroxide, carbon tetrachloride, dilute hydrochloric acid, sodium acetate, dilute sulphuric acid.

Q.

Tomato juice will have a pH:

1. 1.4

2. 4.1

3. 7

4. 2

Q. Arrange the given list of acids and bases in ascending order of their pH.
Water, limewater, vinegar, gastric juices

1. Gastric juices < vinegar < water < limewater
2. Vinegar < water <gastric juices < limewater
3. Vinegar < limewater < water < gastric juices
4. Vinegar < gastric juices < water < limewater

Q. Question 31.
Match the acids given in Column I with their correct source given in Column II
$\begin{array}{cc}\text{Column I}& \text{Column II}\\ \text{A. Lactic acid}& \text{1. Tomato}\\ \text{B. Acetic acid}& \text{2. Lemon}\\ \text{C. Citric acid}& \text{3. Vinegar}\\ \text{D. Oxalic acid}& \text{4. Curd}\end{array}$

Q.

Name the acid present in ant sting.

1. Formic acid

2. Acetic acid

3. Sodium hydroxide

4. Hydrochloric acid

Q.

What are the types of acids on the basis of their source?

Q.

Give the names and formulae of two strong acids and two weak acids.

Q. What do you understand by the strength of an acid? On what factors does the strength of an acid depend?

Q. Select the correct answer from the choices a. b, c and d which are given.
Write only the letter corresponding to the correct answer.
(i) A particular solution contains molecules and ions of the solute so it is a
(a) weak acid
(b) strong acid
(c) strong base
(d) salt solution

(ii) An organic weak acid is
(a) Formic acid
(b) Sulphuric acid
(c) Sulphuric base
(d) Hydrochloric acid

(iii) An example of a complex salt is
(a) Zinc sulphate
(b) Solution hydrogen sulphate
(c) Iron (II) ammonium sulphate
(d) Tetramine copper (II) sulphate

Q.

Four student (a), (b), (c) and (d) measured the pH values of water, lemon juice and sodium bicarbonate solution. What is the correct decreasing order of pH values?

1. Water > lemon juice > sodium bicarbonate

2. Sodium bicarbonate > water > lemon juice

3. Water > sodium bicarbonate > lemon juice

4. Lemon juice > water > sodium bicarbonate

Q.

Solution which does not change colour in presence of any indicator is consider to be ______?

Q.

Is hydrochloric acid used for cleaning?

Q. Question 31.
Match the acids given in Column I with their correct source given in Column II
$\begin{array}{cc}\text{Column I}& \text{Column II}\\ \text{A. Lactic acid}& \text{1. Tomato}\\ \text{B. Acetic acid}& \text{2. Lemon}\\ \text{C. Citric acid}& \text{3. Vinegar}\\ \text{D. Oxalic acid}& \text{4. Curd}\end{array}$

Q.

Do all bases are antacids. If no then why?

Q. Sulphuric acid is called the "king of chemicals". Give four points in support of this statement. [4 MARKS]

Q.

Where is glycolic acid formed?

Q. 0.01 mole of naoh is added to 1 litre of buffer solution which contains 0.1 M acetic acid and 0.1 sodium acetate . if pKa value of acetic acid is 4.76 , the ph of the solution is a) 4.76 b) <4.76 c)>4.76 d) 7.6

Q.

Give an example of the coordinate bond.

Q. Compare the following according to acidic nature of their oxides.
$CaO,CO,$ $C{O}_2,N_2{O}_5,S{O}_3$

1. $CaO<CO<C{O}_2<S{O}_3<N_2{O}_5$
2. None of these
3. $CaO<CO<C{O}_2<N_2{O}_5<S{O}_3$
4. $CO<C{O}_2<CaO<N_2{O}_5<S{O}_3$

Q.

The type of medicine used to treat indigestion is

1. an antihistamine.

2. A sulpha drug

3. An antibiotic

4. An antacid

Q. Which of the following is known as milk of magnesia?

1. $MgC{l}_2$
2. MgO
3. $MgS{O}_4$
4. $Mg(OH{)}_2$