عبدالرحمن عماد الدين
نتيجة الإختبار - G10 ch1 L7.8 GE
اسم الطالب : عبدالرحمن عماد الدين
المدينة : كفر الشيخ
Friday , 8 November 2024 - 04:31 PM6 من 15
السؤال - 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.
إجابة خاطئة
السؤال - 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
إجابة خاطئة
السؤال - 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
إجابة خاطئة
السؤال - 4
Which of the following organisms represent the base of any aquatic ecosystem?
Producers.
Decomposers.
Consumers.
Saprophytes.
إجابة صحيحة
السؤال - 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.
إجابة خاطئة
السؤال - 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
إجابة صحيحة
السؤال - 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.
إجابة خاطئة
السؤال - 8
What is the main reason for the aquatic environment pollution?
Floods.
The increased industrial activity.
Migration of aquatic organisms.
Overfishing of aquatic organisms.
إجابة صحيحة
السؤال - 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
إجابة صحيحة
السؤال - 10
Which of the following contain most of the Earth's water that is least exposed to pollution?
Rivers.
Oceans
Groundwater aquifers.
Lakes.
إجابة خاطئة
السؤال - 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.
إجابة خاطئة
السؤال - 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.
إجابة صحيحة
السؤال - 13
Natural resources include all of following,except………
wood
groundwater
wild animals
glass
إجابة خاطئة
السؤال - 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
إجابة صحيحة
السؤال - 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.
إجابة خاطئة