Punjab 12th Class Chemistry Analytical Chemistry Mcqs Test Online

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Question 1 of 20

Chemistry

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

1.Mass spectroscopy

2.NMR spectroscopy

3.Infrared spectroscopy

4.All of these involve electromagnetic radiations

Question 1 of 20

Question 2 of 20

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

1.HPLC – MS

2.MS

3.LC – MS

4.GC – MS

Question 2 of 20

Question 3 of 20

3. Mass spectroscopy is an analytical technique which involves:

1.Measurement of the relative abundance of the gaseous ions

2.Separation of the gaseous ions

3.All of these

4.Production of gaseous ions form the sample

Question 3 of 20

Question 4 of 20

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

1.300-500 nm

2.10-200 nm

3.200-400 nm

4.400-750 nm

Question 4 of 20

Question 5 of 20

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

1.10-200 nm

2.50-1000 nm

3.100-400 nm

4.1-20 nm

Question 5 of 20

Question 6 of 20

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

1.A gas

2.All of these

3.A liquid

4.A solid

Question 6 of 20

Question 7 of 20

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

1.Bio chemistry

2.Physical chemistry

3.Organic chemistry

4.Forensic chemistry

Question 7 of 20

Question 8 of 20

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

1.400-800 nm

2.800-1000 nm

3.2.5-16 μm

4.0.8-2.5 μm

Question 8 of 20

Question 9 of 20

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

1.Radicals

2.Neutral molecules

3.Positively charges species

4.All of these

Question 9 of 20

Question 10 of 20

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

1.None

2.Nernst filament

3.Tungsten filament

4.Globar

Question 10 of 20

Question 11 of 20

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

1.GE – MS

2.NMS

3.MS

4.LC – MS

Question 11 of 20

Question 12 of 20

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

1.Both of these

2.None of these

3.Relative abundance

4.Molecular weight

Question 12 of 20

Question 13 of 20

13. Mass spectrometry can be used to determine:

1.Molecular formula

2.Molecular weight

3.All of these

4.Molecular structure

Question 13 of 20

Question 14 of 20

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

1.All of these

2.Positively charged species

3.Neutral molecules

4.Radicals

Question 14 of 20

Question 15 of 20

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

1.Visible

2.None of these

3.Radio wave

4.Microwave

Question 15 of 20

Question 16 of 20

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

1.Ultraviolet

2.Visible

3.Both of these

4.None of these

Question 16 of 20

Question 17 of 20

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

1.Hydrogen discharge lamp

2.All of these

3.Deuterium discharge lamp

4.Tungsten filament lamp

Question 17 of 20

Question 18 of 20

18. Far ultraviolet or vacuum ultraviolet region generally lies between

1.10-200 nm

2.400-750 nm

3.300-500 nm

4.200-400 nm

Question 18 of 20

Question 19 of 20

19. 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 19 of 20

Question 20 of 20

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

1.Wave number

2.None of these

3.Wavelength

4.Both of these

Question 20 of 20

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