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Q 1/28
Score 0
Which of the following bonds between the molecules enables water to exist as a liquid rather than a gas at normal room temperatures?
30
Covalent
Hydrogen
Hydrophilic
Ionic
Q 2/28
Score 0
Which property of water makes it suitable for use as a hydrostatic skeleton?
30
It is colourless and transparent
It is difficult to compress
It has a high tensile strength
It is denser than air
28 questions
Q.
Which of the following bonds between the molecules enables water to exist as a liquid rather than a gas at normal room temperatures?
1
30 sec
Q.
Which property of water makes it suitable for use as a hydrostatic skeleton?
2
30 sec
Q.
Look at the table provided. Which option lists the properties of water?
3
30 sec
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4
30 sec
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5
30 sec
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6
45 sec
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7
45 sec
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8
45 sec
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9
45 sec
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10
45 sec
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11
45 sec
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12
45 sec
Q.
When water is in liquid state, it can be ionised. Which are its ionic forms?
13
30 sec
Q.
Which propety of water is directly connected to its ability to ionise?
14
30 sec
Q.
Ice floats on water. Why is this so?
15
30 sec
Q.
Which properties are due to the hydrogen bonds between water molecules having to be overcome?
16
30 sec
Q.
Which is the structural formula for all carbohydrates?
17
30 sec
Q.
A carbohydrate polymer is called a
18
30 sec
Q.
The monomer for carbohydrate polymers are called
19
30 sec
Q.
Which polysaccharides are produced by plants?
20
30 sec
Q.
What are the monosaccharide components of sucrose?
21
30 sec
Q.
Fructose is a pentose (5-carbon) sugar, with a 5-sided ring (pentagon).
22
30 sec
Q.
This is alpha-glucose
23
30 sec
Q.
This diagram shows the open chain form of glucose. It is an aldehyde, which is a strong reducing agent.
24
30 sec
Q.
Disaccharides and polysaccharides are held together by covalent bonds, called glycosidic linkages. Which kind of chemical reaction produces these powerful bonds?
25
30 sec
Q.
This diagram shows the hydrolysis reaction.
26
30 sec
Q.
Which polysaccharides have branching 1,6-glycosidic linkages
