1. What is the proper test to determine if lipids are present? a Benedict\'s rea
ID: 502826 • Letter: 1
Question
1.
What is the proper test to determine if lipids are present?
a Benedict's reagent test
a Biuret test
a Sudan III test
an iodine test
2.
What is the proper chemical test for detecting a starch?
a silver nitrate test
a Benedict's reagent test
an iodine test
3. Which of the following is the largest molecule?
starch
water
sodium chloride
gluclose
4.Lipids are larger molecules than monosaccharide sugars.
True
False
In [Cu(NH3)4]CO3, how many 3d electrons does copper have?
6
7
8
9
10
True or False: The following accurately depicts the balanced chemical equation for a laboratory preparation of nitrogen gas.
NH4NO2(s) 2H2O(g) + N2(g)
Which of these aqueous solutions has the lowest pH?
0.100 M NaOH
0.100 M Na2O
0.100 M Na3N
All of these solutions have the same pH due to the leveling effect.
These all are solutions of weak bases, so Kb values are needed in order to decide.
a Biuret test
a Benedict's reagent test
a Biuret test
a Sudan III test
an iodine test
2.
What is the proper chemical test for detecting a starch?
a silver nitrate test
a Benedict's reagent test
an iodine test
3. Which of the following is the largest molecule?
starch
water
sodium chloride
gluclose
4.Lipids are larger molecules than monosaccharide sugars.
True
False
In [Cu(NH3)4]CO3, how many 3d electrons does copper have?
6
7
8
9
10
True or False: The following accurately depicts the balanced chemical equation for a laboratory preparation of nitrogen gas.
NH4NO2(s) 2H2O(g) + N2(g)
Which of these aqueous solutions has the lowest pH?
0.100 M NaOH
0.100 M Na2O
0.100 M Na3N
All of these solutions have the same pH due to the leveling effect.
These all are solutions of weak bases, so Kb values are needed in order to decide.
a Biuret test
Explanation / Answer
1. Presence of lipids is tested by Sudan III test.
2. Presence of starch is detected by iodine test.
3. Starch is largest molecule. It is a polysaccharides consisting of many monosaccharide units.
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