Online MCQs – Analytical Chemistry – Chemistry 10th

1. The ordinary IR region extends from 2.5 pm (wavelength) to:

2. The analytical chemistry consists of _______ main types of analysis.

3. An agreement between a measured value and the accepted true value.

4. It deals with the identification of elements.

5. Electromagnetic radiations lower in energy than visible radiations are called:

6. An indeterminate error caused by variations of the procedure, environmental factors and limitations of instrumentation.

7. The error caused by improper functioning of an instrument is:

8. Formation of the white precipitate by adding silver nitrate (AgNO₃) in dilute nitric acid (HNO₃) indicates the presence of:

9. It is a method used in electro-analytical chemistry to find the concentration of solute in solution.

10. The Gas is a mobile phase in:

11. The physical methods used to measure physical properties are called:

12. The identification of elements, ions or compounds present in a sample is called:

13. They are also known as electronic spectroscopy.
(i) Ultraviolet spectroscopy
(ii) infrared spectroscopy
(iii) Visible spectroscopy

14. The sample may be solid, liquid, gas or a __________ in qualitative analysis.

15. Analysis deals with the identification of the presence of functional groups in compounds is:

16. It is used to assess the concentration or amount of a given atomic, molecular or ionic chemical.

17. It is the repeatability of a result and is known as the degree of exactness.

18. Various parameters of validation of any analytical method are:
(i) selectivity & linearity
(ii) range & accuracy
(iii) precision & error

19. It is not dependent on precisions.

20. Infrared spectroscopy is an analytical technique introduced in: