Multiple choice question for engineering
1. Spectroscopy deals with interaction of electromagnetic radiation with matter. What is the speed of this radiation in vacuum in m/s?
a) 6 x 108
b) 5 x 108
c) 7 x 108
d) 3 x 108
2. Which type of Quantum Transition takes place in Ultra Violet and Visible spectroscopy?
a) Rotation of molecules
c) Bonding electrons
d) Spin of nuclei in magnetic field
3. Which of the following is not a property or parameter of electromagnetic radiation?
c) Wave number
4. Which of the following is not a type of Spectroscopy?
a) Gamma ray
b) X ray
c) Nuclear magnetic resonance
5. Electromagnetic radiation can travel through vacuum.
6. Which of the following is false about wavelengths of electromagnetic radiation?
a) Radiation with short wavelengths have high energies
b) Energy does not depend on wavelength
c) Radiation with long wavelengths have low energies
d) Energy depends on wavelength
7. Which of the following is the wavelength of microwave radiation?
a) 10 – 780nm
b) 0.78 – 30µm
c) 0.6 – 10 m
d) 0.75 – 3.75 mm
8. How is wave number of electromagnetic radiation related to wavelength?
a) It is the reciprocal of wavelength
b) It is directly proportional to wavelength
c) It is not related to wavelength
d) It is equal to wavelength
9. Which of the following is the wavenumber of UV and Visible radiation?
a) 1 x 106 to 1.3 x 104 m-1
b) 1 x 106 to 1.3 x 104 m
c) 13 – 27 m-1
d) 1 x 106 to 1.3 x 104 m2
10. Velocity of electromagnetic radiation is more in vacuum than in any medium.
1. In West-Gaeke colourimetric procedure, the intensity of the red purple colour is measured photometically and it is proportional to the concentration of sulphur di-oxide. What is the red purple coloured compound?
a) Sodium tetra chloromercurate
b) Dicholorosulphitomercurate complex
c) Ammonia molybdate
d) Paraosaniline sulphonic acid
2. The conductivitimetry method, involves bubbling sulphur di-oxide through a solution containing sulphuric acid and which of the following?
b) Hydrogen peroxide
3. Which of the following are not the characteristics of conductivitimetry method used to measure sulphur di-oxide?
a) Fast response
b) High sensitivity
c) Free from interference by other gases
d) Good accuracy
4. Which of the following are not the characteristics of colorimetry method used to monitor sulphur di-oxide?
a) It is simple
b) It has high sensitivity
c) It has good specificity
d) It is affected by interference from H2SO4, SO3, NH3, etc
5. Which of the following is not true about using gas chromatography for measuring pollutants in air?
a) Pollutants react rapidly in the column
b) Pollutants may not be detected by the detectors
c) Special column and support materials are required
d) Pollutants may elude rapidly from the column
6. The ability of sulphur dioxide to reduce iodine is used in which of the following methods?
d) Gas chromatography
7. Which of the following materials are used as electrodes in coulometric method for the measurement of sulphur di-oxide?
8. Which of the following is the detection limit of coulometric method used for measurement of sulphur di-oxide?
a) 0.1 ppm
b) 1 ppm
c) 2 ppm
d) 0.01 ppm
9. Sensitivity to total sulphur by Flame-photometric detector is which of the following levels?
a) 0.1 ppm
b) 1 ppm
c) 2 ppm
d) 0.01 ppm
10. Which of the following methods are not used for the measurement of sulphur di-oxide?
a) Colorimetric method
b) Correlation spectroscopy
c) Paramagnetic analyzers
11. Which of the following is the wavelength of the radiation generated when an air stream containing sulphur di-oxide is burned in a hydrogen-rich flame?
a) 243 nm
b) 394 nm
c) 467 nm
d) 516 nm
12. Given below, is the diagram of Ultraviolet Fluorescence method. Identify the unmarked component.
b) Electronic circuit
d) Fluorescence chamber
13. In conductivitimetric method, the concentration of sulphur di-oxide is proportional to which of the following parameters of the saw-tooth waveform?
a) Average voltage
b) Peak voltage
d) RMS voltage
14. In conductivitimetric method, to measure the conductivity of the cell, 5V ___________ is applied across the electrodes.
c) Pulsating DC
d) DC or AC
15. The response of coulometric method is instantaneous.
1. Thermal conductivity analyzers cannot be used in which of the following measurements?
a) Hydrogen in blast furnace gases
b) Determination of argon in oxygen in the process of air decomposition
c) Sulphur dioxide in roasting gases in production of sulphuric acid
d) Oxygen from a mixture of oxygen and nitrogen
2. In which of the following conditions can thermal conductivity analyzer be used for multi-component mixtures?
a) When all the components have same thermal conductivities
b) When all the components have very different thermal conductivities
c) When all but one component have same thermal conductivities
d) When all components have very different thermal conductivities except two of them which are the same
3. Which among the following elements has the highest thermal conductivity?
4. Which of the following materials are generally not used for the construction of filaments in thermal conductivity analyzers?
5. Thermistors have positive temperature-coefficient of resistance.
6. Which of the following is not the characteristic of thermistors used in thermal conductivity analyzers?
a) High negative temperature co-efficient of resistance
b) Slow response
c) Extremely sensitive
d) Low cost
7. How can high speed of response be obtained in thermal conductivity analyzers?
a) By increasing the pressure of gas surrounding the filaments
b) By reducing the pressure of gas surrounding the filaments
c) By reducing the temperature of gas surrounding the filaments
d) By increasing the temperature of gas surrounding the filaments
8. Which of the following bridges are used in thermal conductivity analyzers?
a) Wheatstone bridge
b) Kelvin’s bridge
c) Anderson’s bridge
d) Schering’s bridge
9. Which of the following is generally used as indicators in bridges in thermal conductivity analyzers?
10. Changes in composition of gas stream give rise to changes in thermal conductivity of the gas stream.
1. Coarse aggregates are classified into how many groups?
2. How much percent of material which passes through a specific sieve is contained in that
3. Graded aggregate contains particles of size:
a) Single grade
c) Multi grade
4. Flaky particles have:
a) Small thickness
b) Elongated sides
c) Sharp edges
d) Rounded edges
5. Which size coarse aggregate is ideal for use in concrete mix?
6. Elongation index of coarse aggregates is calculated using:
7. In crushing test on coarse aggregates, what size particle is taken as sample?
a) Passing 12.5mm IS sieve
b) Retained on 10mm IS sieve
c) Passing 10mm and retained on 4.75mm IS sieve
d) Passing 12.5mm and retained on 10mm IS sieve
8. What is the density of undisturbed gravel?
a) 2630-2760 kg/cum
b) 1920-2160 kg/cum
c) 1600 kg/cum
d) 1200 kg/cum
9. What is the symbol used for well graded gravel as per ISC system of classification?
10. Gravel is a type of:
a) Rounded aggregate
b) Angular aggregate
c) Flaky aggregate
d) Irregular aggregate
1. __________ gives general guidance for geotechnical investigation.
2. Geosynthetics includes __________ main product categories.
3. ___________ is useful in determining gradient of water underground.
a) Pressure meter
4. How many types of primary functions of geosynthetics are there?
5. CPT is more popular method compared to SPT as a method of geotechnical soil investigation.
6. How many steps are involved in a soil investigation?
7. The structure of a geocell is:
a) 2D honeycombed
b) 2D floccular
c) 3D floccular
d) 3D honeycombed
8. NDT is not employed in geotechnical investigations.
9. ___________ is the largest group of geosynthetics.
10. Which of the below is not a test on geosynthetics?
a) Grab test
b) Dry sieve test
c) Pumping in test
d) Tear test
11. Indirect method of geotechnical investigation is also termed as _____________
a) Geo-chemical methods
b) Geo-physical methods
c) Borehole method
d) Soil mechanics