Introduction to Acids and Bases

Q. Consider the given Venn diagram



X, Y and Z respectively are

1. Salts, acids and bases
2. Acids, bases and salts
3. Acids, salts and bases
4. Bases, salts and acids

Q.

What Are The Types Of Acids With Examples?

Q. What are mineral acids?

Q.

Which acid is present in honeybee when it bites us?

Q. What are neutral oxides?

Q. What is poh?

Q.

Does pH affect seed germination?

Q.

What are some common household acids?

Q. (a) define a base.
(b) Explain, all alkalis are bases but all bases are not alkalis.

Q.

Name two preservatives used for preserving fruit juices, jams, and jellies.

Q.

(a) What are organic acids and mineral acids ?

(b) Give two examples each of organic acids and mineral acids.

(c) State some of the uses of mineral acids in industry.

Q.

What household item has Nitric acid?

Q.

How would you obtain:

(a) a base from another base,

(b) an alkali from a base,

(c) salt from another salt ?

Q.

Litmus solution is a purple dye, which is extracted from:

1. Red algae

2. Spirogyra

3. Lichen

4. Blue-green algae

Q.

Why is sulphuric acid known as king of chemicals and oil of vitriol?

Q.

How can we tell whether a base is strong or weak?

Q. Which of the following acids is used in preservation of food?

1. Phosphoric acid
2. Sulphuric acid
3. Benzoic acid
4. Hydrochloric acid
   

Q. The pH value of NaCl formed, when sodium hydroxide reacted with hydrochloric acid is :

1. 7

Q. Define Ecell and E^°cell . and basic differences between them

Q. Do bases also release H+ ions.
How to make out if the acid/base is strong or weak, without practically performing it.. Is there any method?

Q.

Give the names and formulae of (a) two acidic oxides, and (b) two basic oxides.

Q. Explain salt hydrolysis. Name two salts which are (a) acidic (b) basic (c) neutral, when dissolved in water.

Q.

Name one animal and one plant whose stings contain formic acid (or methanoic acid).

Q.

Explain what basic, mixed , complex and double salts are?

Q. When a strong acid reacts with a strong base, a/an salt is formed which has a pH of in its aqueous solution.

1. acidic
2. neutral
3. basic
4. 5
5. 7
6. 14

Q. The pH of solutions A, B, C, and D are 1, 8, 13, and 5 respectively. Arrange them in increasing order of acidity.
[1 Mark]

Q.

The covalent compound ionizes in water due to its__ (polar/non-polar) nature.

Q.

The property which is not shown by acids is :

(a) they have a sour taste

(b) they feel soapy

(c) they turn litmus red

(d) their pH is less than seven

Q.

The skin has and needs natural oils. Why is it advisable to wear gloves while working with strong alkalis ?

Q. Acids donate protons and bases accept protons.

1. False
2. True