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mcqs of
,
1 : Which acid is not used as a food or mixed with food?
1
:
Tartaric acid
2
:
Ascorbic acid
3
:
Citric acid
4
:
Formic acid
2 : While baking, which gas is responsible for rising the bread and making it soft?
1
:
Oxygen
2
:
Carbon dioxide
3
:
Nitrogen
4
:
Carbon monoxide
3 : When and chemical reaction is carried out with a substance Z; a gas is produced which turns red litmus paper blue. What is the reaction?
1
:
Reaction of an acid with a metal carbonate
2
:
Action of an acid with metal hydrogen carbonate
3
:
Reaction of Pan alkali with an acid
4
:
Reaction of an alkali with ammonium salt
4 : How many hydroxide ions, calcium hydroxide will release in water?
1
:
1
2
:
2
3
:
3
4
:
Zero
5 : Which compound is formed when SO2 is dissolved in water?
1
:
SO3
2
:
H2SO4
3
:
H2SO3
4
:
H2S2O7
6 : Which acid is used in the preparation of soap?
1
:
Oxalic acid
2
:
Tartary acid
3
:
Stearic acid
4
:
Citric acid
7 : In a neutralization reaction between KOH and H3PO4 how many molecules of KOH will react with one molecule of HEPO4?
1
:
2
2
:
1
3
:
3
4
:
4
8 : Which of the following contains oxalic acid?
1
:
Tomato
2
:
Tamarind
3
:
Sour milk
4
:
Orange
9 : Predict the main characteristic of the reaction of metals with acids.
1
:
Metals are dissolved
2
:
Metals are converted into salts
3
:
Hydrogen gas is involved
4
:
All the buff mention characteristic are true
10 : According to the Arrhenius concept a base is a substance that:
1
:
Donates a proton
2
:
Accept a proton
3
:
increase the concentration of
4
:
increase the concentration of H
11 : Which of the following statement is correct according to the bronsted lowery concept :
1
:
An acid can only donates a proton in th epressure of a base
2
:
a base can only accept a proton in the pressure ofan acid
3
:
An acid not need a base to donates a proton
4
:
both an acid a base can donates proton simultaneously
12 : According to the Arrhenius concept a base is a substance?
1
:
Donates a proton
2
:
Accept a proton
3
:
Increase the concentration
4
:
Increase the concentration of HO
13 : According to the boasted lowery theory an acid is defined as:
1
:
A substance that increase OH ion in water
2
:
A substance that increase
3
:
A proton donor
4
:
A proton acceptor
14 : Which of the following is a property of acids:
1
:
bitter taste
2
:
slipper taste
3
:
turns blue litmus taste
4
:
turns red litmus blue
15 : Which of the following is a strong acid according to the Arrhenius theory:
1
:
H CO
2
:
HCL
3
:
CH COOH
4
:
HPO
16 : Which property is common to both acids and base?
1
:
both are sour to taste
2
:
both turn blue litmus paper red
3
:
both turn red litmus paper blue
4
:
both can conduct electricity when dissolved in water:
17 : Which of the following is a weak acid?
1
:
hydrogen acid
2
:
sulfuric acid
3
:
acetic acid
4
:
nitric acid
18 : What of the following is an example of strong base?
1
:
Ammonium hydroxide
2
:
sodium hydroxide
3
:
calcium carbonates
4
:
Magnesium hydroxide
19 : Which of the following is formed when an acid reacts with a metal:
1
:
metal oxide
2
:
salt and hydrogen oxide
3
:
salt and water
4
:
gas and oxygen
20 : Which of the following when an acid reacts with a base?
1
:
Oxygen
2
:
Nitrogen
3
:
Hydrogen
4
:
carbonate
21 : According to the bronsted Lowery theory a base is defined as:
1
:
A substance that increase H ion in water
2
:
A proton donor
3
:
A proton accepter
4
:
A substance that increase inoin water.
22 : Which gasses a primary responsible for the formation of acid rain:
1
:
nitrogen and oxygen
2
:
sulfur dioxide and nitrogen oxides
3
:
carbon dioxide methane
4
:
hydrogen and chlorine
23 : which of the following salts is produced when hydrochloric acid reacts with sodium hydrogen:
1
:
sodium sulfur
2
:
sodium chloride
3
:
sodium nitrate
4
:
sodium carbonate
24 : What is one of the harmful effect of acid rain on buildings?
1
:
It makes buildings more durable
2
:
It causes corrosion of metal structures
3
:
It helps to preserve buildings
4
:
It makes building s resistant to earthquakes
25 : Which of the following is true about a conjugate acid base pair:
1
:
The donates a proton and base accepts it
2
:
Both accept a proton and the base donates it
3
:
Both the acid and base donates protons
4
:
Both the acid and base accept protons
26 : Which of the following compound can act as both an acid a base according to the Bronsted Lowery theory:
1
:
NH
2
:
HO
3
:
NaOH
4
:
HCL
27 : Which of the following is a charactericts of acid?
1
:
They feel supply to touch
2
:
They turn blue litmus paper red
3
:
they taste biter
4
:
they react with bases to from salts
28 : Which of the following is a major environmental effect of acid rain:
1
:
Decrease soil fertility
2
:
Both turn blue litmus paper red
3
:
Both turn red litmus paper blue
4
:
Both can conduct electricity when dissolved in water
29 : What is formed when an acid reacts with a base?
1
:
Water and hydrogen gas
2
:
Salt and water
3
:
Salt and oxygen
4
:
Hydrogen gas and oxygen
30 : Which gas is produced when an acid reacts with a metal?
1
:
oxygen
2
:
nitrogen
3
:
hydrogen
4
:
carbonate
31 : Which of the following is formed when an acid reacts with metal?
1
:
Metal acid
2
:
salts and hydrogen gas
3
:
salts and water
4
:
gas and oxygen
32 : Which of the following is a property of salts?
1
:
Salts are always acid
2
:
Salts can be formed by the reaction of an acid with a base
3
:
salts taste sour bitter
4
:
salts always turn litmus red
33 : what is the PH range of acid rain:
1
:
0-4
2
:
5-6
3
:
4-5
4
:
6-7
34 : Which gasses are primary responsible for the formation of acid rain:
1
:
nitrogen and oxygen
2
:
sulfur dioxide and nitrogen oxide
3
:
carbon dioxide and metal
4
:
hydrogen and chlorine
35 : Which of following is a major environmental effect of acid rain:
1
:
Decreased soil fertility
2
:
Increased oxygen resistant metal earth
3
:
It helps to preserve buildings
4
:
It makes buildings resistant to earth
36 : What is one of the formual effect of acid rain on buildings:
1
:
It makes buildings more durable
2
:
It causes corrosion of metal structure
3
:
It helps to preserve buildings
4
:
It makes buildings resistant to earth
37 : What is the PH range of acid rain:
1
:
0-4
2
:
5-4
3
:
4-5
4
:
5-6
Chapter 7 : Acid Base Chemistry
Chemistry 9th MCQs || Ilam Ghar
Chemistry 9th
