Acids Bases and Salts Class 10 ICSE Chemistry MCQ Questions
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1) All acids have _______ as their constituent element.
a) OH-. b) H+. c) H2. d) O2
Answer- H+
2) Rancid butter has _____acid present in it.
a) Formic acid b) Oleic acid c) Butyric acid. d) Tartaric acid
Answer- Butyric acid
3) Tribasic acids can form ____ different salts and ___ normal salts as they have 3 replaceable hydrogen ions.
a) 3,2. b) 2,3. c) 2,2. d) 2,1
Answer- 2,1
4) Chemical formula for sulphorours acid is _____
a) H2SO3. b) H2SO4. c) H2SO2. D) NaHSO4
Answer- H2SO3
5) Oxygen along with Hydrogen is present in ___
a) Hydracids b) Strong acids c) Oxyacids. d) Organic acids
Answer- Oxyacids
6) An acid which contains very small amount of water or no water at all is called as __
a) Concentrated acid.
b) dilute acid
c) Dibasic acid
d) Hydracid
Answer- Concentrated acid
7) Which among the following is Strong acid?
a) Dilute Hydrochloric acid
b) Concentrated Acetic acid
c) Both
d) Non of the above
Answer- Diluted hydrochloric acid
8) Methyl orange turns___ with acids.
a) Red
b) Purple
c) Pink
d) Colourless
Answer- Pink
9) Phosphoric acid is used as ____
a) Explosive
b) Cleaning
c) Flavoured drink
d) Fertilizer
Answer- Fertilizer
10) Gas evovoled during reaction of action metals with acids is __
a) O2
b) N2
c) H2
d) CO2
Answer- H2
11) A strong alkali undergoes ____ dissociation in aqueous solution.
a) Partial
b) Complete
c) 3/4th dissociation
d) Non of the above
Answer- Complete
12) The base that gives 2 OH- ions in their aqueous state is called as
a) Dibasic acid
b) Diacidic base
c) Dibasic base
d) Diacidic acid
Answer- Diacidic base
13) Metals carbonates decompose to give __ gas.
a) H2
b) SO2
c) O2
d) CO2
Answer- CO2
14) Ammonium hydroxide is prepared by which of the following reaction?
a) NH3+ H2O——NH4OH
b) N2+H2O——NH4OH
c) NH3+H2O—–NH3OH
d) NH2+H20—–NH4OH
Answer- NH3+H2O—–NH4OH
15) Bases are____electrolytes.
a) Weak electrolytes
b) Strong electrolytes
c) Both depending on electrolytic cell used.
d) Depending on electrodes used.
Answer- Strong electrolytes
16) Ammonium hydroxide is used as_____.
a) Drying agent
b) As an antacid
c) Manufacture of soap
d) To remove grease stains from clothes.
Answer- To remove grease stains from clothes.
17) Which number represents neutral solution pH scale?
a) 4
b) 5
c) 6
d) 7
Answer- 7
18) Diseases are diagnosed mostly by ____
a) pH
b) Electrolytes
c) Acids
d) Bases
Answer- pH
19) Salts have_____.
a) High melting point low boiling point
b) Low melting point high boiling point
c) High melting point high boiling point
d) Low melting point low boiling point.
Answer- High melting point, high boiling point.
20) Example of basic salt____
a) [Pb(OH)Cl]
b) Mg(OH)2
c) H2SO4
d) H3PO4
21) Which substance is used to remove acidity of soil?
a) Zinc Hydroxide
b) Slaked lime
c) Calcium hydroxide
d) Magnesium hydroxide
Answer- Slaked lime
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