Punjab 12th Class Chemistry Analytical Chemistry Mcqs Test Online

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Question 1 of 20

Chemistry

1. Which method combines the physical separation capabilities of liquid chromatograph with the mass analysis capabilities of mass spectrometry:

1.MS

2.NMS

3.GE – MS

4.LC – MS

Question 1 of 20

Question 2 of 20

2. Far ultraviolet or vacuum ultraviolet region generally lies between

1.400-750 nm

2.10-200 nm

3.300-500 nm

4.200-400 nm

Question 2 of 20

Question 3 of 20

3. Which of the following techniques is different from the others as regards the basic principle?

1.None of these

2.Electronic spectroscopy

3.Visible spectroscopy

4.Ultraviolet spectroscopy

Question 3 of 20

Question 4 of 20

4. The position of an infrared absorption band is commonly expressed by:

1.Wavelength

2.Wave number

3.Both of these

4.None of these

Question 4 of 20

Question 5 of 20

5. Which of the following is used as a source of visible radiations?

1.Deuterium discharge lamp

2.Hydrogen discharge lamp

3.Tungsten filament lamp

4.All of these

Question 5 of 20

Question 6 of 20

6. Which kind of information about a positively charged species obtained from a mass spectrum?

1.Both of these

2.None of these

3.Molecular weight

4.Relative abundance

Question 6 of 20

Question 7 of 20

7. Which of the following species is detected in the mass spectrometer?

1.Positively charged species

2.Neutral molecules

3.Radicals

4.All of these

Question 7 of 20

Question 8 of 20

8. Which of the following techniques does not involve electromagnetic radiations?

1.Infrared spectroscopy

2.Mass spectroscopy

3.NMR spectroscopy

4.All of these involve electromagnetic radiations

Question 8 of 20

Question 9 of 20

9. Which region of the electromagnetic spectrum is involved in the electronic excitations?

1.Visible

2.None of these

3.Ultraviolet

4.Both of these

Question 9 of 20

Question 10 of 20

10. Which region of the electromagnetic spectrum is involved in mass spectrometry?

1.Radio wave

2.Visible

3.Microwave

4.None of these

Question 10 of 20

Question 11 of 20

11. What is the wavelength range of the ordinary infrared region?

1.800-1000 nm

2.400-800 nm

3.0.8-2.5 μm

4.2.5-16 μm

Question 11 of 20

Question 12 of 20

12. Near ultraviolet region of these electromagnetic spectrum generally lies between:

1.10-200 nm

2.300-500 nm

3.400-750 nm

4.200-400 nm

Question 12 of 20

Question 13 of 20

13. The application of chemistry to criminal investigation is called:

1.Organic chemistry

2.Bio chemistry

3.Physical chemistry

4.Forensic chemistry

Question 13 of 20

Question 14 of 20

14. Mass spectroscopy is an analytical technique which involves:

1.Measurement of the relative abundance of the gaseous ions

2.Production of gaseous ions form the sample

3.Separation of the gaseous ions

4.All of these

Question 14 of 20

Question 15 of 20

15. Far infrared region of the electromagnetic radiation generally lies between:

1.1-20 nm

2.10-200 nm

3.50-1000 nm

4.100-400 nm

Question 15 of 20

Question 16 of 20

16. Which method combines the feature of gas-liquid chromatography and mass spectrometry:

1.GC – MS

2.MS

3.LC – MS

4.HPLC – MS

Question 16 of 20

Question 17 of 20

17. Which of the following species is produced in the ionization chamber of a mass spectrometer?

1.All of these

2.Radicals

3.Positively charges species

4.Neutral molecules

Question 17 of 20

Question 18 of 20

18. Mass spectrometry can be used to determine:

1.All of these

2.Molecular weight

3.Molecular formula

4.Molecular structure

Question 18 of 20

Question 19 of 20

19. What kind of sample can be studied in a mass spectrometer?

1.All of these

2.A gas

3.A liquid

4.A solid

Question 19 of 20

Question 20 of 20

20. Which of the following is not used as a source of infrared radiations?

1.Tungsten filament

2.Globar

3.None

4.Nernst filament

Question 20 of 20

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