Class 10 Science Acid base and Salts Important Problem

In this page we have Class 10 Science Acid base and Salts Test Paper . Hope you like them and do not forget to like , social shar and comment at the end of the page.

Multiple Choice questions

Question 1
When a solution of an acid contains larger amount of acid, it is said to be-
(a) Dilute
(b) concentrated
(c) Mono basic
(d) poly-basic

Question 2
Metals like sodium, potassium and calcium react with an acid to liberate-
(a) CO2
(b) NH3

Question 3
Which of the following is a weak acid?
(a) sulphuric acid
(b) hydrochloric acid
(c) acetic acid
(d) nitric acid

Question 4
The chemical formula of baking soda is
(b) Na2Co3.10H2O
(c) NaHCO3
(d) NaOH

Question 5
Which of the following phenomena occur, when a small amount of acid is added to water?
(a) ionization
(b) Neutralization
(c) Dilution
(d) Salt formation

Question 6
Salt form during reaction of sulphuric acid with copper
(b) CuSO4
(c) K2SO4
(d) NH4CI

Question 7
CuSO4. K2SO4   is
(a)acid salt
(b) a mixed salt
(c) normal salt
(d) double salt

Question 8
The acid present in vinegar
(a)citric acid
(b) tartaric acid
(c) ascorbic acid
(d) acetic acid

Question 9
Acid reacts with ____ of metals to form salt and water.
(b) carbonates
(c) oxides
(d) sulphides

Question 10
Which of these bases is not an alkali?
(b) NH4OH
(c) AI (OH)3
(d) all of the are alkalies

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-
(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?
(c) Baking soda

Question 15
A compound that reacts with an acid to form a salt and water is called
(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-
(b) SO2
(c) N2O
(d) SO3

Question 18
The acidity of Fe(OH)3 is
(b) 3
(c) 4
(d) 5

Question 19
The example of olfactory indicators is
(a) Methyl orange
(b) onion
(c) blue litmus
(d) phenolphthalein

Question 20
The aqueous solution of sodium acetate is
(b) neutral
(c) acidic
(d) none of these

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Practice Question

Question 1 Which among the following is not a base?
B) $NH_4OH$
C) $C_2H_5OH$
Question 2 What is the minimum resistance which can be made using five resistors each of 1/2 Ohm?
A) 1/10 Ohm
B) 1/25 ohm
C) 10 ohm
D) 2 ohm
Question 3 Which of the following statement is incorrect? ?
A) For every hormone there is a gene
B) For production of every enzyme there is a gene
C) For every molecule of fat there is a gene
D) For every protein there is a gene

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