1381ChemistryMedium
Aldehyde and ketone have same general formula for homologous series_________________?
ACnH2nO2n
MCQs
Read every question, see the correct answer, and understand the explanation at your own pace. Study mode has no timer and no negative marking.
Correct answer
B. CnH2nO
Explanation
CnH2nO is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. Endoscopy
Explanation
Endoscopes use optical fibres to produce an image of inside the body. A doctor can insert a bundle of optical fibres into the body. Some carry light into the body, and some carry light reflected off internal body surfaces back out. This allows the doctor to see an image of the inside of the body clearly, and help them diagnose diseases like cancer, or see what they are doing during keyhole surgery.
Correct answer
D. Molasses
Explanation
Molasses is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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C. Azine
Explanation
Azine is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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A. -273.16C°
Explanation
-273.16C° is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Terpolymer
Explanation
Terpolymer is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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C. drying agent
Explanation
drying agent is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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A. Fused metal
Explanation
Fused metal is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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C. Solvent extraction
Explanation
Solvent extraction is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Graphite
Explanation
In chemistry, a substance refers to a matter which has specific composition and specific properties which do not change. A substance can be an element or a compound. A substance typically has a constant composition, which can not be separated by physical methods. Seawater and sand are not substances, because they have varied compositions and their components can be separated by physical methods.