Dear Friends, Today we bring to you a set of 40 most important Chemistry questions (acid, base & salt). These questions are very important for RRB, SSC and other examinations.Attempt all the 10 questions.
RRB & SSC : CHEMISTRY QUIZ (Acid, Base & Salt-I)
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Question 1
The element common to all acids is-
A
Hydrogen
B
Nitrogen
C
Sulphur
D
Oxygen
Question 2
Sulphuric acid is-
A
Monobasic
B
Dibasic
C
Tribasic
D
Tetrabasic
Question 3
The pH of lemon juice is expected to be-
A
less than 7
B
more than 7
C
equal to seven
D
nothing can be predicted
Question 4
If a solution of pH=6 is diluted by 100 times the resulting solution would be-
A
basic
B
neutral
C
buffer
D
acidic
Question 5
Curd is sour due to the presence of-
A
Citric acid
B
Lactic acid
C
Acetic acid
D
None of these
Question 6
Aqua Regia contains
A
3 parts of conc. HCL+ 1 part of conc. HNO3
B
3 parts of conc. HCL+ 1 part conc. H2SO4
C
3 parts of conc. H2SO4+ 1 part conc. HNO3
D
None of these
Question 7
Hydrochloric acid is also known as-
A
Galic acid
B
Picric acid
C
Muriatic acid
D
Chloric acid
Question 8
In neutralization reaction product is-
A
Acid
B
Base
C
Salt & water
D
None
Question 9
The pH value of milk is
A
2.4
B
3.8
C
6.6
D
8.0
Question 10
pH value of neutral solution is-
A
8
B
5
C
7
D
13
Question 11
An acid is a substance which-
A
Donates a proton
B
Accepts an electron
C
Give H+ in water
D
All
Question 12
Formic acid obtained from-
A
Red ants
B
Fats
C
Vinegar
D
Orange
Question 13
Water solution base is called-
A
Acid
B
Salt
C
Alkali
D
None
Question 14
The negative logarithmic value of hydrogen is called-
A
pH
B
pOH
C
pKa
D
pKb
Question 15
The pH scale had been given by-
A
Arrhenius
B
Bronsted
C
Sornsen
D
Lewis
Question 16
The acid used in eye wash is-
A
Oxalic acid
B
Nitric acid
C
Boric acid
D
None
Question 17
A base is a substance which-
A
Is bitter in test
B
Gives OH- ions in aqueous solution
C
can donate electron
D
all
Question 18
Aluminium oxide is a/an-
A
Basic oxide
B
Neutral oxide
C
Amphoteric oxide
D
Acid oxide
Question 19
The increasing order of acid strength of HCl, HBr, HF, HI is-
A
HCl < HBr < HF < HI
B
HBr < HCl < HF < HI
C
HF < HCl < HBr < HI
D
HCl < HF < HBr < HI
Question 20
A solution of washing soda in water is-
A
Acidic
B
Neutral
C
Bleaching
D
Alkaline
Question 21
pH value of human blood is-
A
8.25-8.35
B
7.35-7.45
C
4.0-4.5
D
6.45-6.55
Question 22
In pure water hydrogen ion concentration is-
A
10^-7
B
10^-10
C
10^-2
D
10^-1
Question 23
Source of vitamin C is -
A
Nitric acid
B
Ascorbic acid
C
Oxalic acid
D
Maleic acid
Question 24
Which one is tribasic acid-
A
HCl
B
H3PO4
C
H3BO3
D
H2SO4
Question 25
pH value of alkaline solution is-
A
<7
B
>7
C
7
D
None
Question 26
The pH value of wine is -
A
6.5
B
2.8
C
8.5
D
7.0
Question 27
According to Arrhenius theory of an acid and base, an acid is a substance which gives...ions in water
A
H+ ions
B
OH-
C
Both
D
None
Question 28
Acid react with base to give-
A
Ester
B
Alcohol
C
Salt
D
None
Question 29
Red litmus paper is changed into blue in solution of-
A
Base
B
Acid
C
Salt
D
None
Question 30
Uric acid is present in -
A
soda water
B
rancid butter
C
sour milk
D
urine of mammals
Question 31
Tartaric acid is obtained from-
A
Apples
B
Citrous fruit
C
Grapes
D
Tomato
Question 32
Maleic acid is found in the-
A
Apples
B
Vinegar
C
Milk
D
Lemons
Question 33
Which is not a Lewis acid-
A
BF3
B
AlCl3
C
FeCl3
D
NH3
Question 34
Which one of the following is the strongest acid-
A
HBr
B
HF
C
HClO
D
HClO4
Question 35
The acidic hydrogen is present in-
A
Ethyne
B
Ethene
C
Benzene
D
Ethane
Question 36
By what factor is a solution with pH=2 more acidic than one with pH=6 ?
A
4
B
12
C
400
D
10^4
Question 37
The pH of water at 250 c is 7. When it is heated to 100o c, the pH of water -
A
Increases
B
Decreases
C
Remains same
D
Decreases up to 50^0 C and then increases
Question 38
Which of the following will replace hydrogen from acids to form salts?
A
S
B
Na
C
Ag
D
P
Question 39
The weakest acid among the following is-
A
CH3COOH
B
CH2ClCOOH
C
CHCl2COOH
D
CCl3COOH
Question 40
Which is not a Lewis base
A
H2O
B
NH3
C
CO2
D
BF3
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