Question

Question 11
Which substance is used to purify water
(a)Ammonium chloride
(b) copper sulphate
(c) chlorine
(d) none of these
Question 12
H3PO4 is the example of-
(a)hydracids
(b) organic acid
(c) oxyacid
(d) salt
Question 13
To protect tooth decay we are advised to brush our teeth regularly. The nature of the tooth paste commonly used is
(a) acidic
(b) neutral
(c) basic
(d) corrosive
Question 14
Which of the following substance will not give carbon dioxide on treatment with dilute acid?
(a)Marble
(b)Limestone
(c) Baking soda
(d)Lime
Question 15
A compound that reacts with an acid to form a salt and water is called
(a)base
(b) alkali
(c) solution
(d) none of these
Question 16
An indicator is what type of compound?
(a) reducing agent
(b) strong base or acid
(c) weak base or acid
(d) salt
Question 17
H2SO4 can be prepared by reaction of water with-
(a)NO2
(b) SO2
(c) N2O
(d) SO3
Question 18
The acidity of Fe(OH)3 is
(a)2
(b) 3
(c) 4
(d) 5
Question 19The example of olfactory indicators is
(a) Methyl orange
(b) onion
(c) blue litmus
(d) phenolphthalein Question 20
The aqueous solution of sodium acetate is
(a)basic
(b) neutral
(c) acidic
(d) none of these​

Answer 1

hey,, buddy.

1. c. chlorine
2. c. oxyacid
3. c. basic
4. c. Baking soda
5. a. base
6. a. reducing agent
7. b. So2
8. b. 3
9. b. onion
10. a. basic

hope it's help you!!!!!