Deck 8: Absorption Spectroscopy and Analytical Techniques

Question 1

The colloid osmotic pressure of blood plasma is due to high concentration of                

A)albumin
B)hemoglobin
C)sodium
D)glucose

Answer 1

albumin

Question 2

The sinoatrial node depolarizes more frequently under the influence of                  

A)medulla oblongata
B)vagus nerve
C)norepinephrine
D)acetylcholine

Answer 2

norepinephrine

Question 3

is the enzyme that converts Angiotensinogen to Angiotensin I.

A)Rennin
B)ACE
C)ANP
D)ADH

Answer 3

Rennin

Question 4

The plasma is a viscous, light red liquid, i.e. almost clear in the fasting stage.

Question 5

method is based on the absorption of electromagnetic radiation in the visible, ultraviolet and infrared ranges.

A)Cardiotocography
B)Ultrasonic therapy
C)Spectrophotometry
D)Diathermy

Question 6

waves have short wave-length.

A)Microwave
B)Radio wave
C)Gamma rays
D)IR waves

Question 7

The method based on the absorption of radiation of a substance is known as                  

A)Absorption photometry
B)Spectrophotometry
C)Absorption tocometry
D)Absorption spectrophotoscopy

Question 8

The ratio of the radiant power transmitted by a sample to the radiant power incident on the sample is known as                  

A)Absorbance
B)Transmittance
C)Optical density
D)Photometric concentration

Question 9

If absorbance is plotted graphically against concentration, the graph is                    

A)Parabola
B)Increasing
C)Straight line
D)Decreasing

Question 10

is not a source of radiant energy.

A)Tungsten-mercury lamp
B)Tungsten lamp
C)Xenon-mercury arc
D)Deuterium discharge lamp

Question 11

Which of the following statements is false about single beam absorption instruments?

A)Tungsten bulb is used as a source
B)Beam splitter is used to get parallel beam
C)Test tube is used as sample holder
D)Photovoltaic cell as detector

Question 12

Which of the following statement is false about double beam absorption instruments?

A)It is similar to single beam instruments except two beams are present
B)Tungsten bulb is used as a source
C)Reference beam must have a higher intensity than sample beam
D)Both the beams after they pass through respective samples are compared

Question 13

Which of the following is not an application of colorimeter?

A)Paints
B)Inks
C)Cosmetics
D)Composition detection

Question 14

In photometers, the readings of the specimen are initially obtained in the form of which of the following parameters?

A)Transmittance
B)Absorption
C)Wavelengths
D)Volume

Question 15

Colorimeters are used in applications where great accuracy is required.

Question 16

In the diagram of single beam photometer given below, identify the component that is not marked.

A)Monochromator
B)Absorption filter
C)Sample holder
D)Interference filter

Question 17

Colorimeters are used to determine the concentration of solutions.

Question 18

Which of the following is the purpose of balance indicator in double beam photometer or colorimeter?

A)Selects a particular wavelength
B)Splits the wavelength selected into two equal beams
C)Detects and indicates the amount of light falling on it
D)Indicates the difference between the output of two photometers

Question 19

Which of the following is the purpose of the beam splitter in double beam photometer or colorimeter?

A)Splits beam into two equal intensity beams
B)Splits beam in such a way that sample beam has higher intensity
C)Splits beam in such a way that a reference beam has higher intensity
D)Merge two equal intensity beams into single beam

Question 20

Which of the following is a source used in spectroscopy?

A)LASER
B)Tube light
C)Sodium vapour lamp
D)Tungsten lamp

Question 21

Which of the following indicate leakages in a condenser?

A)The concentration of sodium in steam and condensate are very high
B)The concentration of sodium in steam and condensate are very low
C)The concentration of sodium in steam and condensate are equal
D)The concentration of sodium in steam and condensate are not equal

Question 22

Which of the following are added for pH adjustment in sodium analyser?

A)Acidic solution
B)Basic solution
C)Hydrazine
D)Ammonia buffer

Question 23

Normally, electrodes measure which of the following parameters?

A)Activity
B)Activity co-efficient
C)Blank constant
D)Ionic co-efficient

Question 24

Which of the following represent the concentration of a solution?

A)Only free ions
B)Only bound ions
C)Free ions and bound ions
D)Either free ions or bound ions

Question 25

Sodium selective electrode provides a good response in measurement when the pH is above which of the following values?

A)2
B)3
C)5
D)10