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Acid, Base & Salt
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Santanu Roy
Baking powder is
(a) a mixture (b) a compound
(c) an element (d) a salt
Amartya maity
A mixture
Santanu Roy
Acids and bases are important because of
(a) their use in industry
(b) their effects on human health
(c) their effect on farmer’s crop
(d) all the above are correct.
Amartya maity
All the above
Santanu Roy
Select the one that is having pH < 7.
(a) lime juice (b) lime water
(c) human blood (d) antacid
ANANYA SARKAR
) lime juice (b) lime water 2toi to acidic
Santanu Roy
(a) Lime juice hbe… lime water ph 12.4 er ase pase.. kichu reference pele diye dio
ANANYA SARKAR
Sharp flavour of Coca Cola or any other soft drink is because of the presence of-
Hydrochloric acid / oxalic acid / phosphoric acid /none
Amartya maity
None
Santanu Roy
none
ANANYA SARKAR
Phosphoric acid
Santanu Roy
ok
ANANYA SARKAR
Sour Milk or curd or dahi is produced in the presence of-
Maleic acid / oxalic acid / lactic acid / acetic acid
Santanu Roy
lactic acid
ANANYA SARKAR
Consider the following-bases turn Litmus to blue / methyl orange to yellow/ have a bitter taste /all of the above
Santanu Roy
all of the above are true
ANANYA SARKAR
Non metallic oxides are acidic in nature-
True / false
Santanu Roy
True
Santanu Roy
Which of the following is not required to find the pH of a
given sample ?
(a) pH paper (b) Litmus paper
(c) Universal indicator (d) Standard pH chart
ANANYA SARKAR
Litmus paper?
Santanu Roy
yes
ANANYA SARKAR
Aqua regia is the solution of- HNO3+conc.HCL/NH3+conc.HCL/HCL+conc.HNO3/none
Santanu Roy
HNO3+conc.HCL
ANANYA SARKAR
HCL+conc.HNO3
Amartya maity
Con.HNO3+con.HCL
Santanu Roy
Which of the following is an alkali ?
(a) Ca(OH)2 (b) KOH
(c) Mg(OH)2 (d) CaCO3
Baking powder is
(a) a mixture (b) a compound
(c) an element (d) a salt
A mixture
Acids and bases are important because of
(a) their use in industry
(b) their effects on human health
(c) their effect on farmer’s crop
(d) all the above are correct.
All the above
Select the one that is having pH < 7.
(a) lime juice (b) lime water
(c) human blood (d) antacid
) lime juice (b) lime water 2toi to acidic
(a) Lime juice hbe… lime water ph 12.4 er ase pase.. kichu reference pele diye dio
Sharp flavour of Coca Cola or any other soft drink is because of the presence of-
Hydrochloric acid / oxalic acid / phosphoric acid /none
None
none
Phosphoric acid
ok
Sour Milk or curd or dahi is produced in the presence of-
Maleic acid / oxalic acid / lactic acid / acetic acid
lactic acid
Consider the following-bases turn Litmus to blue / methyl orange to yellow/ have a bitter taste /all of the above
all of the above are true
Non metallic oxides are acidic in nature-
True / false
True
Which of the following is not required to find the pH of a
given sample ?
(a) pH paper (b) Litmus paper
(c) Universal indicator (d) Standard pH chart
Litmus paper?
yes
Aqua regia is the solution of- HNO3+conc.HCL/NH3+conc.HCL/HCL+conc.HNO3/none
HNO3+conc.HCL
HCL+conc.HNO3
Con.HNO3+con.HCL
Which of the following is an alkali ?
(a) Ca(OH)2 (b) KOH
(c) Mg(OH)2 (d) CaCO3
Caco3
Bakigulo keno hobe Na….