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
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-3
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-4
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-5
Oxalic acid is found in

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

Question-6
_________is a natural indicator which is extracted from lichens.

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

Question-7
The acid present in ant's sting is

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

Question-8
Which of the following statement is not correct.

(A) All metal carbonates react with acid to give a salt, water and carbon dioxide.	(B) all metal oxides react with water to give salt and acid
(C) Some metals reacts with acids to give salt and hydrogen	(D) Some non- metal oxides react with water to form an acid

Question-9
The acid found in vinegar is

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

Question-10
____________ is known as baking soda.

(A) Sodium hydrogen carbonate	(B) Sodium carbonate
(C) Sodium hydroxide	(D) Potassium hydroxide

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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