Class 12 Chemistry · Chapter 11 · Test 3
Lipids, Nucleic Acids, Minerals
50 MCQs
MCQs
50 questions · 40 min · 50 marks
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Sample questions
The first 5 of 50. Try each one, then tap to see the answer.
Question 1
Lipids are:
- AHydrophobic but soluble in organic solvents
- BSoluble in water
- CInsoluble in all solvents
- DAlways polymers
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Answer: A
They do not dissolve in water.
Question 2
Unlike polysaccharides and proteins lipids are:
- APolymers of amino acids
- BNot polymers as they lack repeating monomeric units
- CMade of nucleotides
- DAlways solid
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Answer: B
Lipids are a varied class of compounds.
Question 3
Simple lipids are:
- AAmides of fatty acids
- BSalts of fatty acids
- CEsters of fatty acids with alcohols
- DEthers of glycerol
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Answer: C
They are sub-classified as fats and oils and waxes.
Question 4
Triglycerides are esters formed from:
- AThree glycerol and one fatty acid
- BTwo glycerol and two fatty acids
- COne glycerol and one fatty acid
- DOne glycerol and three fatty acids
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Answer: D
Fats and oils are triglycerides.
Question 5
Saturated fatty acids make lipids that are:
- ASolid at room temperature and called fats
- BLiquid and called oils
- CGases
- DSoluble in water
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Answer: A
Saturated chains pack well.
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