Question # 1

Carbohydrates are synthesized by plants through photosynthesis process which requires the following except.

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CO₂ and water.

Sunlight

O₂

Chlorophyll

In the bessemerization process.

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Roasted ore is beated.

Molten matte is removed.

Molten matte is heated

Molten matte is added

Soda time is a mixture of:

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CaO and NaOH

CaCI2 and NaOH

CaO and ca(OH)2

CaCI2 and KOH

How many atmospheric temperature increase every year due to accumulation of CO₂ in air.

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0.03 ^oC

0.05 ^oC

1^oC

2^oC

Density of water at 4°C is:

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0.976 gem-3

1 gem-3

0.956 gem-3

1.1 gem-3

Uric acid is found in

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Urine

Fats

Apple

Grapes

The alkanes consisting of C₅ to C₁₀

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gases

liquids

solid

plasma

Main component of natural gas is

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Methane

Propane

Butane

Propene

The order of reactivity of hydrogen halides with alkenes is.

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HI>HBr

HBr>HI

HCl>HBr

HBr < HCl

Formula of Decane is.

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C₁₀H₂₀

C₁₀H₂₂

C₁₀ H₄

C₁₀H₁₆

The reduction of alkyl halides takes place in the presence of.

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Zn/HCl

Na/HCl

Mg/HCl

Cu/HCl

Potassium ferrocyanide salt is.

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Normal

complex

Basic

Acidic

Which of the following is a poisonous gas.

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Oxygen

Ozone

Nitrogen

Carbon dioxide

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