
Test Yourself : Chapter 64 Instrumental analytical methods

Quiz
•
Chemistry
•
9th - 12th Grade
•
Hard
Chemistry Aristo
FREE Resource
8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following statements concerning colorimetry are correct?
(1) A colorimeter is used to carry out colorimetry.
(2) It determines the concentration of a coloured species by measuring the amount of light its sample solution transmits.
(3) The lower the concentration of a solution of the coloured species, the lower is its absorbance.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following characteristic infrared radiation wavenumber ranges can be used to distinguish between propan-1-ol and propanoic acid?
(1) The wavenumber range 1680–1800 cm⁻¹
(2) The wavenumber range 2500–3300 cm⁻¹
(3) The wavenumber range 3230–3670 cm⁻¹
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The infrared spectrum of compound W is shown in the diagram. Which of the following bonds is most likely to be present in W?
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
P is an acyclic compound (with a molecular formula C₃H₈O). Upon heating with excess acidified potassium dichromate solution under reflux, P can be converted to compound Q. The infrared spectrum of Q is shown in the diagram. What is the condensed structural formula of P?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A. C₆H₅³⁷Cl²⁺
B. C₆H₅³⁵Cl²⁺
C. ⁺CH₂⁸¹Br
D. ⁺CH₂⁷⁹Br
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following compounds can produce a peak at m/z = 57 in their mass spectra?
(1) CH₃CH₂CH₂CH₂CH₃
(2) CH₃COCH₂CH₂CH₃
(3) CH₃CH₂COCH₂CH₂CH₃
8.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
X is a carbon compound with a carbonyl group and not more than four carbon atoms. Its mass spectrum is shown in the diagram. Which of the following statements concerning X are correct?
(1) The relative molecular mass of X is 58.
(2) The peak at m/z = 43 is due to the fragment ion CH₃CO⁺.
(3) X is an aldehyde.
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