G10 ch1 L7.8 GE

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المدينة

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سؤال رقم - 1

Which of the following expresses water in all water bodies on the Earth's surface?

It exists in a pure form.

It contains dissolved or suspended substances.

It has the same density.

It has the same degree of salinity.

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سؤال رقم - 2

The excessive increase of nitrogen and phosphorus elements in a river may lead to…….

decreasing the primary energy productivity

increasing the living organisms variation

abnormal algal blooming

decreasing the number of algae

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سؤال رقم - 3

What is the feature that characterizes the marine living organisms in regions of a periodical change in water abundance?

Withstand high temperatures.

Adaptation to the oxygen deficiency.

Absorption of an excess of solar energy.

Migration during the drought and flood

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سؤال رقم - 4

Which of the following organisms represent the base of any aquatic ecosystem?

Producers.

Decomposers.

Consumers.

Saprophytes.

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سؤال رقم - 5

Which of the following is a description for the food web in the ecosystem?

The relationship between living organisms and non-living factors.

The relationship between non-living factors with each other.

The interconnected food chains.

The symbiotic relationships between living organisms.

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سؤال رقم - 6

solution differs from pure solvent in……..

depression of vapor pressure

depression of the boiling point

absence of osmotic pressure

elevation of the freezing point

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سؤال رقم - 7

What is the effect of increasing the number of solute particles in a certain volume of pure water on each of the freezing and boiling points respectively?

Increases, increases.

Increases, decreases.

Decreases, decreases.

Decreases, increases.

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سؤال رقم - 8

What is the main reason for the aquatic environment pollution?

Floods.

The increased industrial activity.

Migration of aquatic organisms.

Overfishing of aquatic organisms.

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سؤال رقم - 9

Liquid starts to boil when its vapor pressure is…….

less than pressure exerted on it

greater than pressure exerted on it

equal to pressure exerted on it

double the pressure exerted on it

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سؤال رقم - 10

Which of the following contain most of the Earth's water that is least exposed to pollution?

Rivers.

Oceans

Groundwater aquifers.

Lakes.

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سؤال رقم - 11

Which of the following is from the colligative properties of solutions?

Elevation of vapor pressure.

Depression of boiling point.

Elevation of freezing point.

Osmotic pressure.

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سؤال رقم - 12

Which of the following factors doesn't affect the boiling point of solution?

Atmospheric pressure.

Concentration of solution.

Volume of solution.

Density of solution.

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سؤال رقم - 13

Natural resources include all of following,except………

wood

groundwater

wild animals

glass

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سؤال رقم - 14

If the boiling point of acetic acid at 1 atm pressure equals 118°C, it is expected that its boiling point at 0.8 atm pressure equals ...

111°C

118°C

119°C

125°C

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سؤال رقم - 15

Which of the following choices is an effective measure to conserve soil?

Excessive use of chemical fertilizers.

Using traditional irrigation methods in agriculture.

Using sustainable agricultural techniques.

Deforestation to increase the area of agricultural lands.

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G10 ch1 L7.8 GE

إختر الإجابة الصحيحة

Which of the following expresses water in all water bodies on the Earth's surface?

The excessive increase of nitrogen and phosphorus elements in a river may lead to…….

What is the feature that characterizes the marine living organisms in regions of a periodical change in water abundance?

Which of the following organisms represent the base of any aquatic ecosystem?

Which of the following is a description for the food web in the ecosystem?

solution differs from pure solvent in……..

What is the effect of increasing the number of solute particles in a certain volume of pure water on each of the freezing and boiling points respectively?

What is the main reason for the aquatic environment pollution?

Liquid starts to boil when its vapor pressure is…….

Which of the following contain most of the Earth's water that is least exposed to pollution?

Which of the following is from the colligative properties of solutions?

Which of the following factors doesn't affect the boiling point of solution?

Natural resources include all of following,except………

If the boiling point of acetic acid at 1 atm pressure equals 118°C, it is expected that its boiling point at 0.8 atm pressure equals ...

Which of the following choices is an effective measure to conserve soil?

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