Kerala (English Medium) Std 9 Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1
The pH of the gastric juices released during digestion is

(A) less than 7	(B) more than 7
(C) equal to 7	(D) equal to 0

Question-2
Which of the following is used tor dissolution of gold?

(A) Hydrochloric acid	(B) Sulphuric acid
(C) Nitric acid	(D) Aqua- regia

Question-3
_________is a natural indicator which is extracted from lichens.

(A) Litmus	(B) Turmeric
(C) China rose	(D) Lilly

Question-4
The turmeric stain on a white shirt is turned to ----------when it is washed with soap.

(A) blue	(B) Red
(C) Green	(D) Yellow

Question-5
An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change.

(A) Baking power	(B) Lime
(C) Ammonium hydroxide solution	(D) Hydrochloric acid

Question-6
The acid found in vinegar is

(A) Acetic acid	(B) Ascorbic acid
(C) Citric acid	(D) Lactic acid

Question-7
Which one of the following can be used as an acid- base indicator by visually impaired student?

(A) Litmus	(B) Turmeric
(C) Vanilla essence	(D) Petunia leaves

Question-8
A solution reacts with crushed egg- shell to give a gas that turns lime water milky. The solution contains

(A) Nacl	(B) HCl
(C) LiCl	(D) KCl

Question-9
Which of the following phenomena occur when a small amount of acid is added to water?
Ionization, Neutralisation, Dilution, Salt formation

(A) Ionization and Neutralisation,	(B) Ionization and Dilution
(C) Dilution and Neutralisation	(D) Dilution and Salt formation

Question-10
Oxalic acid is found in

(A) Curd	(B) Spinach
(C) Amla	(D) Onion

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Std 9

Kerala (English Medium)

Practice in Related Chapters
The World of Carbon
Some non-metals in nature
Metals
Chemistry In Daily Life
Chemical Bonding
Separation of Mixtures
Nature of Materials
Acids and Alkalies
Structure of Atom