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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.Infrared spectroscopy

2.NMR spectroscopy

3.All of these involve electromagnetic radiations

4.Mass spectroscopy

Question 1 of 20

Question 2 of 20

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

1.MS

2.LC – MS

3.HPLC – MS

4.GC – MS

Question 2 of 20

Question 3 of 20

3. Mass spectroscopy is an analytical technique which involves:

1.Production of gaseous ions form the sample

2.Measurement of the relative abundance of the gaseous ions

3.Separation of the gaseous ions

4.All of these

Question 3 of 20

Question 4 of 20

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

1.Both of these

2.Wave number

3.Wavelength

4.None of these

Question 4 of 20

Question 5 of 20

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

1.None

2.Globar

3.Nernst filament

4.Tungsten filament

Question 5 of 20

Question 6 of 20

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

1.Visible

2.Microwave

3.Radio wave

4.None of these

Question 6 of 20

Question 7 of 20

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

1.Ultraviolet spectroscopy

2.None of these

3.Visible spectroscopy

4.Electronic spectroscopy

Question 7 of 20

Question 8 of 20

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

1.Radicals

2.Positively charged species

3.Neutral molecules

4.All of these

Question 8 of 20

Question 9 of 20

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

1.10-200 nm

2.400-750 nm

3.300-500 nm

4.200-400 nm

Question 9 of 20

Question 10 of 20

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

1.Deuterium discharge lamp

2.All of these

3.Tungsten filament lamp

4.Hydrogen discharge lamp

Question 10 of 20

Question 11 of 20

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

1.2.5-16 μm

2.400-800 nm

3.800-1000 nm

4.0.8-2.5 μm

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.Positively charges species

3.All of these

4.Radicals

Question 12 of 20

Question 13 of 20

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

1.Forensic chemistry

2.Organic chemistry

3.Physical chemistry

4.Bio chemistry

Question 13 of 20

Question 14 of 20

14. 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 14 of 20

Question 15 of 20

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

1.None of these

2.Both of these

3.Visible

4.Ultraviolet

Question 15 of 20

Question 16 of 20

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

1.None of these

2.Relative abundance

3.Both of these

4.Molecular weight

Question 16 of 20

Question 17 of 20

17. Mass spectrometry can be used to determine:

1.Molecular formula

2.All of these

3.Molecular structure

4.Molecular weight

Question 17 of 20

Question 18 of 20

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

1.NMS

2.GE – MS

3.LC – MS

4.MS

Question 18 of 20

Question 19 of 20

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

1.100-400 nm

2.1-20 nm

3.50-1000 nm

4.10-200 nm

Question 19 of 20

Question 20 of 20

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

1.A solid

2.A gas

3.A liquid

4.All of these

Question 20 of 20

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Test By Topics	12th Class Chemistry

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Punjab 12th Class Chemistry Analytical Chemistry Mcqs Test Online

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Punjab 12th Class Chemistry Analytical Chemistry Mcqs Test Online