Question # 1

Lewis acid-base concept have the following characteristics except:

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formation of an adduct

Formation of a co-ordinate covalent bound

Donation and acceptance of an electron pair

Donation and acceptance of a proton

Formula of Potassium ferrocyanide.

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K₄[Fe(CN)₆]^-4

K₃[Fe(CN)₄]^-3

K₂[Fe(CN)₆]^-4

K₄[Fe(CN)₅]^-4

Which of following is not amphoteric?

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H₂O

NH₃

HCO₃

SO₄

What is pOH of 0.01 M solution of KOH?

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3

11

2

4

Acid occurring in sour milk

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Citric acid

Lactic acid

Bytyric acid

Malic acid

According to Lewis concept a base is a substance which can donate.

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Proton

Electron pair

Neutron

Electron

Formic acid is present in

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String of bees

Sour milk

Apple

Fats

Binary compounds of oxygen such as CO2 and SO2 were names as acids by;

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Jabir Bin Hayan

Lavoisier

Al- Jahiz

Sir Humphrey Davy

What is the POH of a 0.02 M Ca(OH)₂?

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1.698

1.397

12.31

12.61

When Bronsted and Lowry put forward acid base concept?

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1913

1923

1933

1943

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