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Class 10 Acids Bases and Salts MCQ Online Test MCQs for Students
The theory of ionisation of substances was proposed by
1. Arrhenius
2. Sorenson
3. Debye
4. Huckel
Option 1 – Arrhenius
HCI in water is ( Class 10 Acids Bases and Salts MCQ )
1. Acidic
2. Basic
3. Amphoteric
4. None
Option 1 – Acidic
HCI in Benzene is
1. Acidic
2. Basic
3. Amphoteric
4. None
Option 4 – None
When non metal oxides are dissolved in water are formed ( Class 10 Acids Bases and Salts MCQ )
1. Acids
2. Bases
3. Salts
4. None
Option 1 – Acids
Sulphar dioxide is
1. Acidic
2. Basic
3. Amphoteric
4. Neutral
Option 1 – Acidic
Acids are ( Class 10 Acids Bases and Salts MCQ )
1. Volatile
2. None Volatile
3. (1) and (2)
4. None
Option 1 – Volatile
Acids turn blue litmus to
1. Red
2. Orange
3. Yellow
4. Violet
Option 1 – Red
Bases turn Red litmus to ( Class 10 Acids Bases and Salts MCQ )
1. Orange
2. Voilet
3. Blue
4. Green
Option 3 – Blue
An acid and a base react to form
1. Soap
2. Proteins
3. Precipitate
4. Salt
Option 4 – Salt
Substances that are sour to taste ( Class 10 Acids Bases and Salts MCQ )
1. Acids
2. Bases
3. Salts
4. All the above
Option 1 – Acids
Substances that are soapy to touch
1. Acids
2. Bases
3. Salts
4. None
Option 2 – Bases
When metallic oxides are dissolved in water …. are formed ( Class 10 Acids Bases and Salts MCQ )
1. Acids
2. Bases
3. Salts
4. None
Option 2 – Bases
Nitrogen pentoxide is
1. Acidic
2. Basic
3. Ampoteric
4. Neutral
Option 1 – Acidic
Sodium oxide is ( Class 10 Acids Bases and Salts MCQ )
1. Acidic
2. Basic
3. Ampoteric
4. Neutral
Option 2 – Basic
Which of the following has basic in nature
1. MgO
2. ZnO
3. CaO
4. All the above
Option 4 – All the above
The colour of methyl orange indicator in acidic medium is ( Class 10 Acids Bases and Salts MCQ )
1. Yellow
2. Green
3. Orange
4. Red
Option 4 – Red
Acids react with bases to form
1. Salt
2. Water
3. (1) and (2)
4. None of these
Option 3 – (1) and (2)
Acids react with metallic oxides to form water and ( Class 10 Acids Bases and Salts MCQ )
1. Base
2. Salt
3. Another acid
4. Non Metallic Oxide
Option 2 – Salt
Acids liberate carbon dioxide by reacting with
1. Carbonates
2. Bicarbonates
3. (1) and (2)
4. Carbonic acid
Option 3 – (1) and (2)
Which of the following show electrical conductivity ( Class 10 Acids Bases and Salts MCQ )
1. Aqueous solutions of acids
2. Aqueous solutions of bases
3. Aqueous solutions of salts
4. All the above
Option 4 – All the above
The colour of methyl orange indicator in basic medium is
1. Green
2. Orange
3. Yellow
4. Red
Option 3 – Yellow
On heating bases decompose into water and ( Class 10 Acids Bases and Salts MCQ )
1. Metal oxides
2. Metal Carbonates
3. Metal Hydrides
4. Metal Hydroxides
Option 1 – Metal oxides
Bases react with acids to form
1. Salt
2. water
3. (1) and (2)
4. None
Option 3 – (1) and (2)
Which of the following are Electric conductors ( Class 10 Acids Bases and Salts MCQ )
1. Aqueous solutions of acids
2. Aqueous solutions of bases
3. Aqueous solutions of salts
4. All the above
Option 4 – All the above
Which one of the following salt is predominant in the ocean?
(A) Calcium Carbonate
(B) Sodium Chloride
(C) Potassium Chloride
(D) Magnesium Sulphate
Option b – Sodium Chloride
Table salt (NaCl) is a product of
(A) Weak acid and weak base
(B) Strong acid and strong base
(C) Weak acid and strong base
(D) Strong acid and weak basic
Option b – Strong acid and strong base
Which one of the following is viscous?
(A) Alcohol
(B) Water
(C) Honey
(D) Gasoline
Option c – Honey
Which one of the following statements is not correct?
(A) The presence of NaCl increases the rate of setting of Plaster of Paris
(B) Gypsum is added to the cement to slow down its rate of setting
(C) All alkaline earth metals form hydrated salts
(D) Barium and Strontium are found free in nature
Option d – Barium and Strontium are found free in nature
What is for bleaching untrue powder?
(A) It is more soluble than water
(B) It is a powder of light yellow colour
(C) It is the oxidant
(D) It releases chlorine after reaction with dilute acid
Option a – It is more soluble than water
A solution turns red litmus blue. The pH of the solution is
(A) 7
(B) 1
(C) 5
(D) None of these
Option d – None of these
Which acid is considered a basic chemical in Industry?
(A) H₂CO3
(B) HNO3
(C) H₂SO4
(D) HCI
Option c – H₂SO4
Goldsmiths use aqua regia, which is prepared by mixing
(A) Nitric acid and Sulphuric acid
(B) Nitric acid and Hydrochloric acid
(C) Sulphuric acid and Hydrochloric acid
(D) Citric acid and Benzoic acid
Option b – Nitric acid and Hydrochloric acid
pH value shows the Numeric value of
(A) the Quality of the chemical used for developing photographic negatives
(B) Analysing the nature of the solution acidic or basic
(C) Analysing the intensity of an earthquake
(D) Analysing for checking the purity of milk
Option b – Analysing the nature of the solution acidic or basic
Which of the following is present in the maximum amount of acid rain?
(A) HCI
(B) HNO3
(C) H₂SO4
(D) H₂CO3
Option c – H₂SO4
An aqueous solution of copper sulphate is acidic in nature because the salt undergoes.
(A) Dialysis
(B) Electrolysis
(C) Hydrolysis
(D) Photolysis
Option c – Hydrolysis
Which is not a Lewis acid?
(A) AICI3
(B) BF3
(C) NH3
(D) FeCl3
Option c – NH3
Sodawater obtained by passing carbon dioxide in water is
(A) An oxidising agent
(B) Basic in nature
(C) Acidic in nature
(D) A reducing agent
Option c – Acidic in nature
Which of the following acid do not contain Oxygen?
(A) Nitric Acid
(B) Sulphuric Acid
(C) Hydrochloric Acid
(D) All of the above
Option c – Hydrochloric Acid
What is Neela Thotha?
(A) Copper Sulphate
(B) Calcium Sulphate
(C) Iron Sulphate
(D) Sodium Sulphate
Option a – Copper Sulphate
An unknown gas quickly dissolves in water. This gaseous aqueous solution turns red litmus into blue. This gas produces hydrogen chloride with a white flame. This unknown gas is
(A) Sulphur dioxide
(B) Nitric hydroxide
(C) Ammonia
(D) Carbon monoxide
Option c – Ammonia
Baking soda is
(A) Sodium Hydrogen Carbonate
(B) Sodium Dihydrogen Carbonate
(C) Disodium Hydrogen Carbonate
(D) Sodium Carbonate
Option a – Sodium Hydrogen Carbonate
The chemical formula of baking soda is
(A) Ca(OH)₂
(B) NaHCO3
(C) CaCO3
(D) Na₂CO3
Option b – NaHCO3
The chemical formula of washing soda is
(A) NaOH
(B) Na₂CO3
(C) NaHCO3
(D) Ca(OH)2
Option b – Na₂CO3
Antacids are
(A) Base
(B) Acid
(C) Salt
(D) Buffer
Option a – Base
The Carboxyl group is made up of from
(A) >C=O group
(B) -OH group
(C) Carbonyl and hydroxyl groups
(D) Ester group
Option c – Carbonyl and hydroxyl groups
Formic acid is prepared from red ants in Latin which is called
(A) Formo
(B) Formate
(C) Formica
(D) Silica
Option c – Formica
Acetic acid is initially obtained from
(A) Butter
(B) Vinegar
(C) First fat
(D) Red ants
Option b – Vinegar
The dicarboxylic acid among the following is
(A) Palmitic acid
(B) Oleic acid
(C) Oxalic acid
(D) Acetic acid
Option c – Oxalic acid
What is the percentage of acetic acid present in vinegar?
(A) 5-10%
(B) 6-10 %
(C) 10-15 %
(D) 60-70 %
Option b – 6-10 %
The ketone containing two different alkyl groups bonded to a carbonyl carbon atom is called
(A) Simple ketones
(B) Symmetrical ketones
(C) Unsymmetrical ketones
(D) Acetone
Option c – Unsymmetrical ketones
Glutaric acid is
(A) Aliphatic dicarboxylic acid
(B) Aromatic dicarboxylic acid
(C) Aliphatic monocarboxylic acid
(D) Aromatic tricarboxylic acid
Option a – Aliphatic dicarboxylic acid
Butanal is used in margarine and food for its
(A) Buttery odour
(B) Camphor odour
(C) Pungent odour
(D) Musky aroma odour
Option a – Buttery odour
The O-C-H bond angle in propionaldehyde is
(A) 60°
(B) 90°
(C) 120°
(D) 180°
Option c – 120°
Formaldehyde is the dehydrogenation product of
(A) Ethanol
(B) Ethanal
(C) Methanol
(D) Propanol
Option c – Methanol
Which of the carbonyl compound present in pistachio odour?
(A) Camphor
(B) Benzaldehyde
(C) Methyl phenyl ketone
(D) Diphenyl ketone
Option c – Methyl phenyl ketone
Popcorn has butter flavour which contains
(A) Cinnamaldehyde
(B) Vanillin
(C) Butan-2-one
(D) Butane-2,3-dione
Option d – Butane-2,3-dione
Hybridisation of carbonyl carbon atom is
(A) sp³d
(B) sp
(C) sp³
(D) sp2
Option d – sp2
In ketones, the carbonyl group is arranged
(A) Anywhere in the carbon chain
(B) In the middle of the carbon chain
(C) At the end of the carbon chain
(D) At the beginning of the carbon chain.
Option b – In the middle of the carbon chain
Ketones are the first oxidation products of
(A) Primary alcohol
(B) Secondary alcohol
(C) Tertiary alcohol
(D) Alkanoic acid
Option b – Secondary alcohol
Which of the following is not correct about baking soda?
(a) It is used in the soda-acid fire extinguisher.
(b) It is added for faster cooking.
(c) It is a corrosive base.
(d) It neutralises excess acid in the stomach.
Option c – It is a corrosive base
Which one of the following statements is correct?
(a) All bases are alkali.
(b) None of the bases is alkali.
(c) There are no more bases except the alkalis.
(d) All alkalis are bases but all bases are not alkalis.
Option d – All alkalis are bases but all bases are not alkalis
Which of the following solutions will not change the colour of blue litmus paper to red? I. Acid solution II. Base solution III. Common salt solution Select the correct answer using the codes given below.
(a) I and III
(b) II and III
(c) Only I
(d) Only II
Option b – II and III
Which of the following statement(s) is/are correct? I. Metallic oxides are said to be basic oxides. II. Non-metallic oxides are basic in nature. III. All acids have similar chemical properties. Codes
(a) Only I and III
(b) Only II and III
(c) Only II
(d) All statements are correct
Option a – Only I and III
Which one among the following is not a property of salt?
(a) Salts have ordered packing arrangements called lattices.
(b) Salts have low melting points but high boiling points.
(c) Salts are brittle.
(d) Salts conduct electricity when dissolved in water or even in a motion state.
Option b – Salts have low melting points but high boiling points
An acid turns blue litmus red and the base turns red litmus blue. A group of students in a laboratory testing a solution with a red litmus paper which remained red with no change. This result shows that the solution is
(a) not a base.
(b) not an acid.
(c) Neither acid nor a base
(d) Both acid and base
Option a – not a base
Which compound, when dissolved in water, conducts electricity and forms a basic solution?
(a) HCI
(b) CH3COOH
(c) CH3OH
(d) NaOH
Option d – NaOH
The indicator used in the titration of a strong acid and a strong basis
(a) Phenolphthalein
(b) Methyl orange
(c) Alizarin yellow
(d) Red litmus
Option a – Phenolphthalein
Which one among the following stages are suitable indicator when a solution of sodium carbonate is mixed with sulphuric acid?
(a) Methylene blue
(b) Methyl red
(c) Phenolphthalein
(d) Methyl orange
Option c – Phenolphthalein
Suppose you have four test tubes labelled as ‘A’, ‘B’, ‘C’ and ‘D’. ‘A’ contains plain water, ‘B’ contains the solution of an alkali, ‘C’ contains the solution of an acid, and ‘D’ contains the solution of sodium chloride. Which one of these solutions will turn the phenolphthalein solution pink?
(a) Solution ‘A’
(b) Solution ‘B’
(c) Solution ‘C’
(d) Solution ‘D’
Option b – Solution ‘B’
Consider the following statements. I. Acids are sour in taste and change the colour of blue litmus to red. II. Bases are bitter and change the colour of red litmus to blue. III. Litmus is a natural indicator. Which of the statements given above is/are correct?
(a) I and I
(b) I and III
(c) II and III
(d) I, II and III
Option d – I, II and III
Which of the following is correct regarding buffer solution?
(a) It contains a weak acid and its conjugate base.
(b) It contains a weak base and its conjugate acid.
(c) It shows little change in pH on adding a small amount of acid or base.
(d) None of the above
Option c – It shows little change in pH on adding a small amount of acid or base
Which of the following has a pH value of 7?
(a) Pure Water
(b) Neutral solution
(c) Both (a) and (b)
(d) Acidic solution
Option c – Both (a) and (b)
The pH of water at 25° C is 7. When it is heated to 100° C, the pH of the water
(a) increases
(b) decreases
(c) remains the same
(d) decreases up to 50° C and then increases
Option b – decreases
The pH of fresh groundwater slightly decreases upon exposure to air because
(a) carbon dioxide from air is dissolved in the water.
(b) oxygen from the air is dissolved in the water.
(c) the dissolved carbon dioxide of the groundwater escapes into the air.
(d) the dissolved oxygen of the groundwater escapes into the air.
Option a – carbon dioxide from air is dissolved in the water
The pH value of water is
(a) 4
(b) 7
(c) 12
(d) 18
Option b – 7
Statement I Addition of water to an aqueous solution of HCI decreases the pH. Statement II Addition of water suppresses the ionisation of HCI. Codes
(a) Both the statements are individually true and statement II is the correct explanation of statement I.
(b) Both the statements are individually true but statement II is not the correct explanation of statement I
(c) Statement I is true, but statement II is false.
(d) Statement I is false, but statement II is true.
Option c – Statement I is true, but statement II is false
Consider the following statements. I. Limestone, chalk and marble are different forms of calcium carbonate. II. When the pH of rainwater is less than 5.6, it is called acid rain. III. The human body works within the pH range of 7.0 to 7.8. Which of the statements given above is correct?
(a) I and II
(b) I and Ill
(c) II and III
(d) I, II and III
Option d – I, II and III
Antacids are
(a) base
(b) acid
(c) salt
(d) buffer
Option a – base
Which one of the following salts when dissolved in water makes the solution basic?
(a) Sodium chloride
(b) Copper sulphate
(c) Ferric chloride
(d) Sodium acetate
Option d – Sodium acetate
Which of the following properties is true for toothpaste?
(a) It is acidic.
(b) It is neutral.
(c) It is basic.
(d) It is made up of Calcium phosphate, the material of tooth enamel.
Option c – It is basic
When hard water is evaporated completely the white solid remains in the container. It may be due to the presence of I. Carbonates of Ca and Mg. II. Sulphates of Ca and Mg. III. Chlorides of Ca and Mg. Select the correct answer using the codes given below.
(a) I and II
(b) I, II and III
(c) Only III
(d) I and III
Option d – I and III
The desirable range of pH for drinking water is
(a) 6.5 to 8.5
(b) 5.0 to 6.5
(c) 6.5 to 7.0
(d) 7.0 to 8.5
Option c – 6.5 to 7.0
Which one of the following is correct? Due to the continuous use of calcium superphosphate as fertiliser in the soil, the pH of the soil increases or decreases.
(a) More than 7
(b) Less than 7
(c) Equal 7
(d) Cannot be predicted
Option a – More than 7
The pH of milk is 6. When it turns sour, the pH
(a) becomes < 6
(b) remains the same, i.e., 6
(c) becomes > 6
(d) becomes neutral, i.e., 7
Option d – becomes neutral, i.e., 7
Which of the following may be a possible pH value of an acidic solution?
(a) 6
(b) 7
(c) 8
(d) 9
Option a – 6
The solution of which one of the following will have a pH of less than 7?
(a) NaOH
(b) KCI
(c) FeCl3
(d) NaCl
Option c – FeCl3
On the labels of the bottles, some soft drinks are claimed to be acidity regulators. They regulate acidity using
(a) carbon dioxide
(b) bicarbonate salts
(c) Both (a) and (b)
(d) carbon dioxide and lime
Option b – bicarbonate salts
Which chemical was an important symbol in our struggle fo for freedom? ( Acids Bases and Salts Class 10 MCQ Online Test )
(a) Glucose
(b) Fertiliser
(c) Medicine
(d) Sodium chloride
Option d – Sodium chloride
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