Question # 1

Malic acid founds in:

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Apple

Fats

Rancid Butter

Oranges

When acid react with carbonates and bicarbonates which gas is evolved?

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H2

CO₂

Cl₂

N₂

Which one of the following species is not amphoteric?

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H₂O

NH₃

HCO₃

SO₄

Which salt is used as a table salt?

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NaCl

Na₂CO₃

Na₂SiO₃

NaCl

Which of following is not conjugate base.

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S^-2

F^-1

Na⁺

SO₄

Which of the following thing is a lewis base?

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NH₃

BF₃

H⁺

AlCl₃

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

Bases gave taste:

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Bitter

Sweetsh

Sour

Saltish

Uric Acid is present in

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Apple

Fats

Urine

Grapes

Which salt is used for the manufacture of detergents, pulp and paper?

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NaCl

Na₂CO₃

Na₂SiO₃

NaCl

If a liquid has a pH of 7 then it must.

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Be a colourless and odourless liquid

Freeze at 0 ^oC and boil at 100 ^oC

Be natural

Be a solution containing water

Jabir Bin Haiyan prepared.

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Nitric Acid

Hydrochloric acid

Sulphueric Acid

All of these

When acid reacts with sulphites and Bi sulphates which gas is evolved?

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H2

CO₂

SO₂

NH₃

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