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Inductively Coupled Plasma Optical Emission Spectroscopy

Total questions: 37

Worksheet time: 19mins

Name
Class
Date
1.

The transformation of a liquid into spray of small droplets of aerosols is called ___________.

a)

nebulization process

b)

desolvation process

c)

atomization process

d)

spraying

2.

Radiation source in AAS is a ___________ which provide narrow emission bands

a)

continuum source

b)

line source

3.

Interference: is the presence of substance that changes the signal from the analyte of interest when analytes concentration remain the same. List 3 interferences in AAS.

a)

Ionization interference

b)

Spectral interference

c)

Chemical interference

d)

Fundamental interference

4.

In analysis of Ca using Atomic Emission Spectroscopy, the presence of sulphate ions and phosphate ions prevent the atomization of Ca2+ by forming non volatile salts. Name the type of interference described above.

a)

spectral interference

b)

chemical interference

c)

ionization interference

5.

In Atomic Absorption Spectroscopy, with what material is the cathode in the Hollow cathode lamp constructed?

a)

Tungsten

b)

Quartz

c)

Element to be investigated

d)

Aliminium

6.

Which of the following is the function of the atomizer in the emission system of Atomic Absorption Spectroscopy?

a)

To split the beam into two

b)

To break the steady light into pulsating light

c)

To break large mass of liquid into small drops

d)

To reduce the sample into atomic state

7.

In Atomic Absorption Spectroscopy, which of the following is the generally used radiation source?

a)

Tungsten lamp

b)

Xenon mercury arc lamp

c)

Hydrogen or deuterium discharge lamp

d)

Hollow cathode lamp

8.

AAS is used for ———- analysis of samples

a)

Carbohydrates

b)

Protein

c)

Fat

d)

Minerals

9.

AAS stands for———

a)

Atomic Absorption Spectrophotometer

b)

Atomic Absorbing Spectrophotometer

c)

Atomic Analytical Spectrophotometer

d)

Atomic Absorptive Spectrophotometer

10.

Which of the following is the source of excitation of atoms in AAS?

a)

Light

b)

Flame

c)

Atoms

d)

Electrons

11.

What optical principle involved in AAS?

a)

Transmission

b)

Activation

c)

Absorption

d)

Reflection

12.

Select the temperature in the excitement of atoms in AAS

a)

Above 100

b)

Above 500

c)

Above 750

d)

Above 1000

13.

The mixture of the following gases is the fuel source for analysis of maximum elements using ASS

a)

Nitrous di oxide and Acetylene

b)

Air and Acetylene

c)

Air and Oxygen

d)

Air and LPG

14.

What form of the sample is required for the analysis of sample in Flame AAS

a)

Liquid

b)

Solid

c)

Gas

d)

Aerosol

15.

What type of Lamp provides the ionized elements respective to the elemental analysis in samples

a)

Hallow Cathode Lamp

b)

Hallow Proton Lamp

c)

Hallow Electron Lamp

d)

Hallow Neutron Lamp

16.

Choose the light source for the absorption of atoms in AAS

a)

EMR

b)

UV

c)

Visible

d)

Iconic radiation

17.

Nebuliser is a component of AAS instrument that is for ——— if sample while injecting the sample to AAS

a)

a. Spraying.

b)

b. Atomisation

c)

c. Vaporization

d)

d. Evaporation

18.
What is the primary purpose of Inductively Coupled Plasma Spectroscopy (ICP)?
a)
To analyze the physical properties of gases
b)
To detect and measure elements in a sample
c)
To determine the pH level of liquids
d)
To measure temperature changes in samples
19.
Which gas is primarily used to create the plasma in ICP?
a)
Argon
b)
Nitrogen
c)
Helium
d)
Oxygen
20.
What is the temperature range that the plasma can reach in ICP?
a)
About 1,000 Kelvin
b)
About 15,000 Kelvin
c)
About 5,000 Kelvin
d)
About 10,000 Kelvin
21.
What happens to the atoms in the plasma during the atomization process?
a)
They cool down and condense
b)
They break apart and become excited
c)
They form new compounds
d)
They remain unchanged
22.
What is the purpose of calibration curves in ICP?
a)
To cool the sample before analysis
b)
To relate light intensity to element concentration
c)
To measure the temperature of the plasma
d)
To prepare the sample for introduction
23.
In which of the following scenarios would ICP be most beneficial?
a)
Assessing the color of food products
b)
Analyzing the taste of beverages
c)
Detecting heavy metals in water samples
d)
Measuring the temperature of soil
24.
How does ICP contribute to food safety?
a)
By measuring the taste of food products
b)
By detecting harmful elements in food products
c)
By analyzing the color of food samples
d)
By assessing the nutritional value of food
25.
What analogy is used to describe the uniqueness of elements in ICP?
a)
Elements are like flavors in a dish.
b)
Elements are like musical notes in a song.
c)
Elements are like fingerprints of individuals.
d)
Elements are like different colors in a rainbow.
26.
What is one reason why ICP is considered a fast analytical method?
a)
It uses low temperatures
b)
It can analyze multiple elements at once
c)
It is less expensive than other methods
d)
It requires no sample preparation
27.
Which of the following is a limitation of ICP?
a)
It can analyze multiple elements simultaneously.
b)
It is a quick analysis method.
c)
It requires skilled operators.
d)
It can detect elements at very low concentrations.
28.
What is the primary purpose of Inductively Coupled Plasma Optical Emission Spectroscopy (ICP OES)?
a)
To analyze the physical properties of solids
b)
To measure temperature changes
c)
To determine the concentration of elements in a sample
d)
To evaluate the color of liquids
29.
What is the first step in the process of Inductively Coupled Plasma Optical Emission Spectroscopy (ICP OES)?
a)
Plasma generation
b)
Analysis of results
c)
Sample introduction
d)
Detection of emitted light
30.
Which of the following best describes the sample preparation for ICP OES?
a)
Samples can be either liquid or solid and may need to be dissolved
b)
Samples are always mixed with water
c)
Samples must be in solid form only
d)
Samples do not require any preparation
31.
What role does the nebulizer play in the ICP OES process?
a)
It analyzes the emitted light
b)
It converts the sample into a fine mist
c)
It prepares the sample for cooling
d)
It generates the plasma
32.
Which of the following best describes how plasma is generated in ICP OES?
a)
By heating the sample with a flame
b)
By exposing the aerosol to a high-frequency electromagnetic field
c)
By using a laser to ionize the sample
d)
By mixing the sample with a chemical reagent
33.
What is the temperature of the plasma generated in ICP OES?
a)
About 15,000 Kelvin
b)
About 1,000 Kelvin
c)
About 5,000 Kelvin
d)
About 10,000 Kelvin
34.
What is the main purpose of using a spectrometer in ICP OES?
a)
To generate the plasma.
b)
To cool the sample before analysis.
c)
To measure the intensity of emitted light.
d)
To prepare the sample for testing.
35.
What is one advantage of using ICP OES over other analytical methods?
a)
It requires longer analysis times.
b)
It is less sensitive than other methods.
c)
It can only analyze one element at a time.
d)
It can detect elements at very low concentrations.
36.
What is the main benefit of ICP OES's multi-element capability?
a)
It allows for longer analysis times
b)
It reduces the cost of analysis for single elements
c)
It can only analyze one element at a time
d)
It saves time and resources by analyzing multiple elements simultaneously
37.
What is the ultimate goal of using ICP OES in quality assurance?
a)
To improve product aesthetics
b)
To ensure the absence of harmful elements
c)
To increase the speed of manufacturing
d)
To reduce production costs

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