CBSE Std 10 Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1
The reaction between an acid and a base is known as

(A) Neutralisation	(B) Addition
(C) Substitution	(D) Displacement

Question-2
A house wife found that the bread prepared by her is hard and small in size, which ingredient has she forgotten to add?

(A) Na₂CO₃	(B) NaOH
(C) NaHCO₃	(D) Na₂O

Question-3
What happens when a CO₂ fire extinguisher cylinder is inverted and the stopper is opened by pushing the plunger ?

(A) An explosion takes place	(B) CO₂ will comes out
(C) Water comes out	(D) Nothing will happen

Question-4
Metals react with dilute acids to give metal salts and

(A) Water	(B) Oxygen
(C) CO₂	(D) H₂

Question-5
Which is known as plaster of paris ?

(A) CaSO₄.5H2O	(B) CaSO₄.3H2O
(C) CaSO₄.3/2H2O	(D) CaSO₄.1/2H₂O

Question-6
Acids react with sodium carbonate or bicarbonate to give ____________ gas .

(A) H₂	(B) O₂
(C) CO₂	(D) CO

Question-7
Carbondioxide in water forms _________

(A) carbonic acid	(B) carbon monoxide
(C) acetic acid	(D) caustic soda

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

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

Question-9
The soda commonly used in the kitchen for making tasty, crispy pakodas is

(A) Caustic soda	(B) Washing soda
(C) Caustic potash	(D) Baking soda

Question-10
Which base is used to neutralise the excess acid in the stomach?

(A) Nitric acid	(B) Formic acid
(C) Citric acid	(D) Antacid

Click here to see your answersheet and detailed track records.

Std 10

CBSE

Practice in Related Chapters
Acids, Bases and Salts
Metals and Non-metals
Periodic Classification of Elements
Carbon and its Compounds
Chemical Reactions and Equations