Acids, Bases and Salts MCQ Questions Class 10 Science Chapter 2
NCERT MCQ Questions for Class 10 Science Chapter 2 Acids, Bases and Salts. Acids, Bases and Salts MCQ Questions with Answers from Class 10 Science Chemistry.
Acids, Bases and Salts MCQ Questions Class 10 Science Chapter 2
Acids, Bases and Salts Multiple Choice Questions with Answers Class 10 Science Chapter 2 PDF is available.
(1) Acids are…………………in taste.
(a) Spicy
(b) Bitter
(c) Sour
(d) Sweet
ANS- Sour
(2) ……………. Are changes the color of blue litmus to red.
(a) Bases
(b) Acid
(c) Salt
(d) Indicator
ANS- Acid
(3) ……………. Is a natural indicator.
(a) Turmeric
(b) HCl
(c) Salt
(d) bases
ANS- Turmeric
(4) ……………….. are not indicator.
(a) Methyl orange
(b) Phenolphthalein
(c) Turmeric
(d) Hydrochloric acid
ANS- Hydrochloric acid
(5) Litmus solution is a …………….. dye.
(a) Orange
(b) Yellow
(c) Purple
(d) White
ANS- Purple
(6) Some substances whose odor changes in acidic or basic media. these are called …………..indicators.
(a) Natural
(b) Olfactory
(c) Acidic
(d) Synthetic
ANS- Olfactory
(7) Choose the wrong option.
(a) HCl is acid
(b) NaOH is a base.
(c) NaCl is Salt
(d) Turmeric is synthetic indicator.
ANS- Turmeric is synthetic indicator
(8) H2SO4 is………
(a) Nitric acid
(b) Sulphuric acid
(c) Hydrochloric acid
(d) Hydrogen sulphide.
ANS- Sulphuric acid
(9) NaOH means …………
(a) Sodium hydroxide which is base
(b) Sodium oxide which is acid
(c) Sodium hydroxide which is acid
(d) Sodium hydroxide which is salt.
ANS- Sodium hydroxide which is base
(10) When Zinc granules and dilute Sulphuric acid get reacts by burning……………..
(a) Oxygen gas evolved
(b) Carbon monoxide gas evolved
(c) Hydrogen gas comes out
(d) Bubbles formed
ANS- Hydrogen gas comes out
(11) Acid + Metals —> …………… + hydrogen gas
(a) Base
(b) Metal Oxide
(c) Indicator
(d) Salt
ANS- Salt
(12) 2NaOH + Zn ……………. + H2
(a) Sodium hydroxide
(b) Sodium zincate
(c) Sodium oxide
(d) Zinc oxide
ANS- Sodium zincate
(13) Passing the carbon dioxide gas evolve through lime water.
(a) White ash formed
(a) White precipitate formed
(b) Black ash formed
(c) White powder formed
ANS- White precipitate formed
(14) Formula of lime water.
(a) CaOH
(b) Ca(OH)2
(c) NaOH
(d) NaCl
ANS- Ca(OH)2
(15) It is not made by Calcium Carbonate.
(a) Limestone
(b) Chalk
(c) Marble
(d) Tooth brush
ANS- Tooth brush
(16) All metal carbonates and hydrogen carbonates reacts with acids to give…………………..
(a) Salt, Carbondioxide, Water
(b) Salt, water, acid
(c) Salt water, base
(d) Salt water, hydrogen gas
ANS- Salt, Carbondioxide, water
(17) Base + Acid —–> ……………… + water
(a) Ash
(b) Powder
(c) Carbon dioxide
(d) Salt.
ANS-Salt
(18) NaOH + ……………. –> NaCl + water
(a) HCl
(b) Acid
(c) Salt
(d) Base
ANS- HCl
(19) Copper (II) chloride color
(a) Green yellow
(b) Green purple
(c) Blue green
(d) Reddish pink.
ANS- Blue green
(20) Metal oxide + Acid —–> ………………… + water
(a) HCl
(b) Acid
(c) Salt
(d) Base
ANS- Salt
(21) Metallic oxides are……………
(a) Salt
(b) In powder formed
(c) Liquid in nature
(d) Basic oxides
ANS- Basic oxides
(22) Non-metallic oxides are ……………… in nature
(a) Basic
(b) Acidic
(c) Salty
(d) Solid
ANS- Acidic
(23) Conducts electricity when……………
(a) Base in water
(b) Acid in base
(c) Acid in water
(d) Base in acid
ANS- Acid in water
(24) Choose incorrect sentence.
(a) Acid in water conducts electricity
(b) Salt is formed when acid and base get reacts.
(c) Glucose and alcohol produce electricity
(d) Hydrochloric acid has sour taste.
ANS- Glucose and alcohol produce electricity
(25) Acid produces ………… ion in solution.
(a) H+
(b) Cl–
(c) HCl
(d) Cation
ANS- H+
In case you are missed :- Previous Chapter MCQ Questions
(26) HCl + H2O —–> H3O+ + Cl–
(a) H3O+
(b) H2
(c) HO
(d) H2O
ANS- H3O+
(27) NaOH (s) + H2O —->
(a) Na, OH
(b) Na, OH–
(c) Na+, H–
(d) Na, O2-
ANS- Na+, H–
(28) …………………… are generated OH– in water.
(a) HCl
(b) Acids
(c) Salts
(d) Bases
ANS- Bases
(29) Bases which are soluble in water called……………..
(a) Alkane
(b) Alkene
(c) Allyl
(d) Alkalis
ANS-Alkalis
(30) H+ + OH- —> ……………………
(a) HCl
(b) Acids
(c) Salts
(d) Water
ANS- Water
(31) Name the reaction when dissolving an acids or bases in water .
(a) Slow reaction
(b) Endothermic reaction
(c) Exothermic reaction
(d) Fast reaction
ANS- Exothermic reaction
(32) Decreases concentration of ions( H3O+/OH–)
(a) Due to endothermic reaction
(b) Due to dilution
(c) Due to less ions
(d) Due to salt concentration
ANS- Due to dilution
(33) To distinguish acid and base , we use …………….
(1) Eyes
(2) acids
(3) Indicators
(4) Salts
ANS-Indicators
(34) A scale which measure the hydrogen ion concentration in solution.
(a) Thermometer
(b) galvanometer
(c) pH scale
(d) measuring scale
ANS- pH scale
(35) Higher hydronium ion concentration…
(a) Lower is the pH value
(b) Lower is the temperature
(c) Lower is the pressure
(d) Lower is the surface tension
ANS- Lower is the pH value
(36) pH of neutral solution………….
(a) 6
(b) 8
(c) 2
(d) 7
ANS- 7
(37) As the pH value increases from 7 to 14. It represents an increase in …… ion concentration in the solution.
(a) H+
(b) OH–
(c) O–
(d) H–
ANS- OH–
(38) Pure water and blood pH.
(a) 2.2
(b) 4.8
(c) 7.4
(d) 9.8
ANS-7.4
(39) The pH range of acid rain is ………..
(a) More than 9.2
(b) Less than 9.2
(c) Less than 5.6
(d) More than 5.1
ANS- Less than 5.6
(40) Stomach produces ……………..
(a) Nitric acid
(b) Sulphuric acid
(c) Hydrochloric acid
(d) Hydrogen sulphide
ANS- Hydrochloric acid
(41) When HCl get increases in our stomach then people use bases called …………….
(a) CaOH
(b) Oxalic acid
(c) NaOH
(d) Antacids
ANS- Antacids
(42) Tooth decay starts when the pH of the mouth is lower than …….
(a) 5.5
(b) 4.3
(c) 9.0
(d) 1.2
ANS-5.5
(43) Bacteria present in the mouth produces ………… by degradation of sugar ad food particles.
(a) Base
(b) Acid
(c) Salt
(d) Saliva
ANS-Acids
(44) Stinging hair of nattle leaves inject……………….. causing burning pain.
(a) Melionic acid
(b) Sulphuric acid
(c) Hydrochloric acid
(d) Methanoic acid
ANS- Methanoic acid
(45) Aqueous solution of sodium chloride called…….
(a) Salt
(b) Antacid
(c) Brine
(d) Indicator
ANS- Brine
(46) Bleaching powder represented as……….
(a) CaOH
(b) Ca(OH)2
(c) CaOCl2
(d) CaO
ANS- CaOCl2
(47) Bleaching powder is does not used as a
(a) Oxidizing agent
(b) Anti germ agent
(c) Bleacher
(d) Antacid
ANS- Antacid
(48) Chemical name of baking soda.
(a) Sodium hydroxide
(b) Sodium chloride
(c) Sodium ethoxide
(d) Sodium hydrogencarbonate
ANS- Sodium hydrogen carbonate
(49) Recrystallization of sodium carbonate gives ………………..
(a) Bleaching powder
(b) Washing soda
(c) Baking soda
(d) Sodium hydrogencarbonate
ANS- Washing soda
(50) Chemical name of plaster of paris.
(a) Calcium sulphate monohydrate
(b) Calcium sulphate hemihydrate
(c) Calcium sulphate oxalate
(d) Calcium sulphate
ANS- Calcium sulphate hemihydrate
In case you are missed :- Next Chapter MCQ Questions