(a) The pH values of six solutions A to F are given below :

A = 0, B = 11, C = 6, D = 3, E = 13, F = 8

Which of the above solutions are (i) acids (ii) alkalis ?

(b) Name the acids or alkalis used to make (i) car batteries (ii) explosives (iii) soaps (iv) fertilisers.

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Solution

a)Solution pH greater than 7 is alkaline. Solution pH less than 7 is acidic.

Acidic: A, C, D

Basic: B, E, F

b)The acid or alkalis used to make the following are:

i.car battery – Acid used -- Sulphuric acid $(H_{2} S O_{4})$

ii.explosives – Acid used – Nitric acid $(H N O_{3})$

iii.soaps -- Alkali used – Sodium hydroxide $(N a O H)$ and Potassium hydroxide $(K O H)$

iv.fertilizers – Acid used – Nitric acid $(H N O_{3})$ and also Sulphuric acid $(H_{2} S O_{4})$

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Similar questions

Q. The pH values of five solutions A, B, C, D and E are given below:

A	1
B	5
C	7
D	11
E	13

Which solution is (i) weakly alkaline (ii) neutral (iii) strongly acidic (iv) strongly alkaline, and (v) weakly acidic?

What can a universal indicator indicate?
(i) Whether a solution is acidic.
(ii) Whether a solution is basic.
(iii) The pH of the solution.
(iv) Whether a base is strong or weak.
(v) Whether an acid is strong or weak.

Q. Match the following:
(A) (i)-a, (ii)-c,(iii)-d,(iv)-e,(v)-b,(vi)-f
(B) (i)-b,(ii)-c,(iii)-a,(iv)-f,(v)-e,(vi)-d
(C) (i)-f,(ii)-e,(iii)-b,(iv)-c,(v)-a,(d)- d
(D) (i)-b,(ii)-c,(iii)-d,(iv)-a,(v)-e,(vi)-f

Q. Which acids/ bases are used for the following?
(i) To neutralize sting of wasps
(ii) In alkaline batteries
(iii) Manufacturing of soap

Match the following reactions:-

$\begin{matrix} Reaction Names & Reactions i & Displacement reaction & {A. CaO + O}_{2} \to {2Ca(OH)}_{2} ii & Decomposition Reaction & {B. Fe + Pb(NO}_{3})_{2} \to {Fe(NO_3)}_{2} + Pb iii & Redox Reaction & {C. MgCl}_{2} {+ Ca(OH)}_{2} \to {Mg(OH)}_{2} {+ CaCl}_{2} iv & Combination Reaction & {D. KClO}_{3} \to {2KCl + 3O}_{2} v & Double Displacement Reaction & {E. CO}_{2} {+ H}_{2} \to {2CO + H}_{2} O \end{matrix}$

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(a) The pH values of six solutions A to F are given below : A = 0, B = 11, C = 6, D = 3, E = 13, F = 8 Which of the above solutions are (i) acids (ii) alkalis ? (b) Name the acids or alkalis used to make (i) car batteries (ii) explosives (iii) soaps (iv) fertilisers.

(a) The pH values of six solutions A to F are given below :

A = 0, B = 11, C = 6, D = 3, E = 13, F = 8

Which of the above solutions are (i) acids (ii) alkalis ?

(b) Name the acids or alkalis used to make (i) car batteries (ii) explosives (iii) soaps (iv) fertilisers.