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Punjab 12th Class Chemistry Analytical Chemistry Mcqs Test Online

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Question 1 of 20

Chemistry

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

1.A liquid

2.All of these

3.A solid

4.A gas

Question 1 of 20

Question 2 of 20

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

1.800-1000 nm

2.0.8-2.5 μm

3.400-800 nm

4.2.5-16 μm

Question 2 of 20

Question 3 of 20

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

1.Hydrogen discharge lamp

2.All of these

3.Tungsten filament lamp

4.Deuterium discharge lamp

Question 3 of 20

Question 4 of 20

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

1.All of these involve electromagnetic radiations

2.NMR spectroscopy

3.Mass spectroscopy

4.Infrared spectroscopy

Question 4 of 20

Question 5 of 20

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

1.Molecular weight

2.Relative abundance

3.Both of these

4.None of these

Question 5 of 20

Question 6 of 20

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

1.Nernst filament

2.Tungsten filament

3.Globar

4.None

Question 6 of 20

Question 7 of 20

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

1.None of these

2.Wavelength

3.Both of these

4.Wave number

Question 7 of 20

Question 8 of 20

8. 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 8 of 20

Question 9 of 20

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

1.Ultraviolet

2.None of these

3.Both of these

4.Visible

Question 9 of 20

Question 10 of 20

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

1.None of these

2.Radio wave

3.Visible

4.Microwave

Question 10 of 20

Question 11 of 20

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

1.300-500 nm

2.10-200 nm

3.400-750 nm

4.200-400 nm

Question 11 of 20

Question 12 of 20

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

1.Neutral molecules

2.Radicals

3.Positively charges species

4.All of these

Question 12 of 20

Question 13 of 20

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

1.Physical chemistry

2.Bio chemistry

3.Organic chemistry

4.Forensic chemistry

Question 13 of 20

Question 14 of 20

14. Far ultraviolet or vacuum ultraviolet region generally lies between

1.300-500 nm

2.200-400 nm

3.10-200 nm

4.400-750 nm

Question 14 of 20

Question 15 of 20

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

1.MS

2.LC – MS

3.HPLC – MS

4.GC – MS

Question 15 of 20

Question 16 of 20

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

1.NMS

2.MS

3.LC – MS

4.GE – MS

Question 16 of 20

Question 17 of 20

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

1.Positively charged species

2.All of these

3.Neutral molecules

4.Radicals

Question 17 of 20

Question 18 of 20

18. Mass spectroscopy is an analytical technique which involves:

1.All of these

2.Measurement of the relative abundance of the gaseous ions

3.Production of gaseous ions form the sample

4.Separation of the gaseous ions

Question 18 of 20

Question 19 of 20

19. Mass spectrometry can be used to determine:

1.Molecular weight

2.Molecular formula

3.All of these

4.Molecular structure

Question 19 of 20

Question 20 of 20

20. 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 20 of 20

Test By Subject	Punjab
Test By Topics	12th Class Chemistry

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