CBSE Class 10 Chemistry Acids Bases And Salts Worksheet Set G

Question. Which colour appears when few drops of phenolphthalein put into test tube contains lime water?
(A) Yellow
(B) Orange
(C) Pink
(D) Colourless
Answer : C

 

Question. The compound used for removal of acidity in stomach is : 
(A) NaCl
(B) MgCl₂
(C) Mg(OH)₂
(D) CaCl₂
Answer : C

Question. Which one of the following is not an acidic salt ?
(A) NaHSO₄
(B) NaH₂PO₄
(C) Na₃PO₄
(D) Na₂HPO₄
Answer : C

 

Question. Which among the following is the most abundant metal found in the earth’s crust?
(a) Magnesium
(b) Aluminium
(c) Oxygen
(d) Iron
Answer: B

Question.. Which of the following pairs of reactants will go undergo a displacement reaction?
(a) CuSO₄ + Fe
(b) ZnSO₄ + Fe
(c) MgSO₄ + Fe
(d) Ca(SO₄)₂ + Fe
Answer: A

Question. Which of the following alloys contains a non-metal as one of its constituents?
(a) Steel
(b) Brass
(c) Amalgam
(d) Bronze
Answer: A

Question. The pH of caustic soda solution containing 2 gm/litre caustic soda will be :
(A) 11.9
(B) 9.7
(C) 10.8
(D) 12.7
Answer : D

Question. Which of the following contain seven molecule of water of crystallization?
(A) Epsom Salt
(B) Green Vitriol
(C) Blue vitriol
(D) White vitriol
Answer : A, B, C

Question. Products obtained on electrolysis of brine are: 
(A) NaHCO₃, H₂, Cl₂
(B) H₂, NaOH, NaHCO₃
(C) Cl₂, NaOH, Na₂O₂
(D) NaOH, H₂, Cl₂
Answer : D

 

Question. The chemical formula of Plaster of Paris is 
(A) CaSO₄
(B) CaSO₄. 2H₂O
(C) CaSO₄ . ½ H₂O
(D) CaSO₄ . H₂O
Answer : C

Question. Concentration of hydrogen and hydroxyl ions in mole/litre for pure water is :
(A) 1 × 10^–7
(B) 2 × 10^–7
(C) 1 × 10^–14
(D) 1 × 10^–6
Answer : A

 

Question. The chemical formula of dead burnt plaster is :
(A) CaSO₄.1/2 H₂O
(B) CaSO₄.2H₂O
(C) CaSO₄.H₂O
(D) CaSO₄
Answer : D

Question. Which one of the following is complex salt ?
(A) Ca(OCl)Cl
(B) Pb(OH)NO₃
(C) K₂[HgI₄]
(D) Ca[H₂PO₂]₂
Answer : C

Question. Galvanisation is a method of protecting steel and iron from rusting by coating them with a thin layer of
(a) Copper
(b) Aluminum
(c) Zinc
(d) Bauxite
Answer: C

Question. Aqueous solution of CsO₂ is:
(A) Basic
(B) Neutral
(C) Acidic
(D) Amphoteric
Answer : A

Question. A student added a drop of universal indicator to 1.00mL of given solution and found that a green colour is produced. The pH value of the solution will be:
(A) 7 – 9
(B) 0 – 9
(C) 10 – 12
(D) 4 – 6
Answer : A

Question. The H⁺ ion concentration of a solution is 2 ×10_-8 mol L^-1. The pH value of the solution is-
(A) 7.699
(B) 7.599
(C) 7.799
(D) 7.899
Answer : A

Question. Complex salt is 
(A) Zinc Sulphate
(B) Sodium hydrogen Sulphate
(C) Iron ammonium Sulphate
(D) Tetraamine Copper (II) Sulphate
Answer : D

Question. Read the following statements.
Statement – I : Plaster of Paris is stored in moisture proof containers.
Statement – II : Plaster of Paris on reaction with water changes into a hard solid gypsum.
Select the correct answer from the options given below:
(A) Statement – I is true, Statement – II is false.
(B) Statement – I is false, Statement – II false.
(C) Both statements are true and statement – II provides explanation to statement – I
(D) Both Statements are true but statement – II does not provide explanation to Statement – I.
Answer : C

 

Question. Find the incorrect pair :
(A) Ammonium hydroxide-removes grease stains from clothes.
(B) Calcium Hydroxide-white washing of building
(C) Sodium hydroxide-Manufacture of soap
(D) Magnesium Hydroxide-manufacture of fertilizers
Answer : A

Question. Which of the following indicators is not an acid-base indicator ? 
(A) Phenolphthalein
(B) Vanilla
(C) Litmus
(D) Methyl orange
Answer : B

Question. The non-metal which is liquid at room temperature is:
a) Mercury
b) Bromine
c) Carbon
d) Helium
Answer: B

Question. The number of protons in an atom of an element A is 19 then, the number of electron in its ion A+ is:
a) 18
b) 19
c) 20
d) 21
Answer: A

Question. The sulphide ores are converted into oxides by heating strongly in the presence of excess air. This process is known as
a) Roasting
b) Smelting
c) Calcination
d) Refining
Answer: A

Question. In electrolytic refining, the cathode is made up of
a) Pure metal
b) Impure metal
c) Alloy
d) Metallic salt
Answer: A

Question. Which of the following represent the correct order of decreasing reactivity?
a) Mg > Al > Zn > Fe
b) Mg > Zn > Al > Fe
c) Al > Zn > Fe > Mg
d) Mg > Fe > Zn > Al
Answer: A

Question. An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be
(a) Ca
(b) C
(c) Si
(d) Fe
Answer: A

 

Question. Bauxite is an ore of
a) Iron
b) Aluminium
c) Mercury
d) Copper
Answer: B

Question. The metal which is liquid at room temperature is
a) Bromine
b) Mercury
c) Iodine
d) Potassium
Answer: B

Question. Which of the following pairs will give displacement reactions?
(a) NaCl solution and copper metal
(b) MgCl₂ solution and aluminium metal
(c) FeSO₄ solution and silver metal
(d) AgNO₃ solution and copper metal
Answer: D

Question. An element X is soft and can be cut with the help of a knife. It is very reactive to air and cannot be kept open in the air. It reacts vigorously with water. Identify the element from the following:
(a) Mg
(b) Na
(c) P
(d) Ca
Answer: B

Question. Zinc and HCl react to form
(A) H₂
(B) N₂
(C) CO₂
(D) He
Answer : A

Question. The chemical formula of Gypsum is:
(A) CaCO₃ . 5H₂O
(B) CaSO₄ . 2H₂O
(C) CaSO₄ . 21 H₂O
(D) CaCO₃ . 21 H₂O
Answer : B

 

Please click on below link to download CBSE Class 10 Chemistry Acids Bases And Salts Worksheet Set G