Question # 1

Mallic acid is present in

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Apple

Feats

String of bees

Urine

Natural gas is 85% methane, It is used to make the follwing except.

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Carbon black

Ethane

Propane

Both b and c

Deficiency of Vitamin E causes.

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rickets

Scurvy

Anemia in babies

Night blindness.

Ozone is beneficial for us as it absorbs.....................

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Infrared Radiations

Ultraviolet radiations

Chlorofluorocarbons

Air pollutants

Which gas is evolved when acids react with carbonates and bicarbonates?

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Carbon monoxide

Carbon dioxide

Hydrogen

Hydrogen chloride

If Qc < Kc the reaction goes in:

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Forward

Reverse

At equilibrium state

None

Which one of the ore of copper?

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Copper glance

Chalcopyrite

Both a and b

None of these

A reaction between an acid and base produce.

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Salt and water

Salt and gas

Salt and acid

Salt and bases

Carbohydrates are synthesized by plants through.

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Respiration

Photosynthesis

Dehydrateion

Evaporation

Which is used for cleaning agent for domestic and commercial purpose?

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NaCl

Na₂CO₃

NaHCO₃

Na₂SiO₃

Which disease cause when humans use water of industrial effuents.

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Cancer

Asthma

Jaundica

Cholera

Ozone is formed in:

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Troposphere

Stratosphere

Mesosphere

Thermosphere

Molecular formula of stearic acid is.

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C₁₅H₃₁ COOH

C₁₂H₁₅COOH

C₁₅H₃₀COOH

C₁₇H₃₄COOH

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10th Class Chemistry English Medium KPK Boards Online Mcqs MCQs With Answers

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