1 Which type of vibration bond angle is decrease ?
A symmetrical
B. Asymmetrical
C. Rocking
D. Scissoring
2 Which type of solutions give good fluorescence ?
A. Diluted
B. Concentrated
C. Acidic
D. Basic
3 Which type of filter paper are mostly used in paper chromatography?
A. Butter paper
B. Sample paper
C. Whatmann filter paper
D. Filter paper
4 Which sentence is false about UV SPECTROSCOPY ?
A. Benzene is not used as solvent.
B. Low temperature is give better result in uv SPECTROSCOPY.
C. Chloroform is used as solvent in UV.
D. UV ray wavelength is 200- 400 nm
5 Which molecules is decrease fluorescence ?
A. Oxygen
B. Hydrogen
C. Nitrogen
D. Carbon
6 Which material are used to prepare rod of globar source ?
A. Silicon dioxide
B. Silicon carbide
C. Silicon oxide
D. Silicon carboxamide
7 Which material are used to made sample cell in UV-spectroscopy?
A. Silver
B. Silicon
C. Quartz
D. Aluminium
8 Which is principal of the IR spectroscopy ?
A. Absorption
B. Emissions
C. Adsorption
D. Scattering
9 Which is not use of IR spectroscopy ?
A. Functional group
B. Structure identify
C. Polymer analysis
D. Metal detecting
10 Which factor is responsible for the separation of the components in descending paper chromatography?
A. Partition
B. Adsorption
C. Gravity
D. Electronegativity
11 Which factor does not affect in stationary phases in paper chromatography ?
A. Thickness
B. Flow rate
C. Purity
D. Molecular weight
12 Which device is used to isolate the radiation of the desired wavelength from wavelength of the continuous spectra ?
A. Monochromator
B. Radiation source
C. Recorder
D. Collimating Systems
13 Which device is used to convert light energy into electrical signal ?
A. Amplifier
B. Detector
C. Sample cell
D. Slit
14 Which detector are detected IR radiation by potential different ?
A. Thermocouple
B. Bolometers
C. Thermistor
D. Potentiometer
15 Which compound are used as diluent in IR sampling ?
A. Potassium Bromide
B. Ethanol
C. Benzaldehyde
D. Acetone
16 When there are to complex mixture are separated which development technique of Thin Layer Chromatography is used ?
A. Ascending
B. Two dimensional
C. Descending
D. Horizontal
17 When there are to complex mixture are separated which development technique of paper Chromatography is used ?
A. Ascending
B. Descending
C. Radiation
D. Two dimensional
18 When absorption intensity of compound is decreased it is called
A. Red shift
B. Blue shift
C. Hypochromic shift
D. Hyperchromic shift
19 What is the separation principle of the paper chromatography ?
A. Partition
B. Adsorption
C. Capilary action
D. Ionization
20 What is role of slit in uv-visible spectroscopy ?
A. Monochromatic radiation to polychromatic radiation.
B. Polychromatic radiation to monochromatic radiation.
C. Producing narrow radiation beam
D. Blocking optical path
21 Static Quenching is due to
A. Neutral reaction
B. Hydrogenated
C. Complex formation
D. Ionization
22 Rf value is
A. Distance travelled by the compound at it’s point of maximum.
B. Distance travelled by the standard.
C. Distance travelled by Solvent travelled
D. Distance travelled by the compound divided by distance travelled by Solvent travelled
23 Nujol means ____________
A. Polymer
B. Crude oil
C. Mineral oil
D. Volatile oil
24 In which vibration, one bond is one plane and other bond is another plane?
A. Rocking
B. Wagging
C. Scissoring
D. Twisting
25 In which vibration bond length is increases or decreases ?
A. Rocking
B. wagging
C. Twisting
D. Symmetrical
26 In which bending type of vibration bond angle is constant ?
A. Scissoring
B. Twisting
C. Rocking
D. Wagging
27 In Visible-spectroscopy Diffraction grating is consists of
A. Glass
B. Quartz
C. Alkyl halide
D. Silicon
28 In UV-spectroscopy Diffraction grating is consists of
A. Glass
B. Quartz
C. Alkyl halide
D. Silicon
29 In photo voltaic cell which material is used as layer between cathode and anode ?
A. Selenium
B. Aluminum
C. Gold
D. Silver
30 In IR-spectroscopy Diffraction grating is consists of
A. Glass
B. Quartz
C. Alkyl halide
D. Silicon
31 In Fluorimetric analysis, when molecules are excited in visible region which lamp is used ?
A. Hydrogen deturium lamp
B. Xenon lamp
C. Tangustan lamp
C. Mercury lamp
32 If temperature Is increased ?
A. Fluorescence is decrease
B. Fluorescence is increase
C. Fluorescence remains same
D. Absorbance increases but Fluorescence remains same
33 If solvent is polar and electron transition is n –> π∗ which type of shift are seen in graph ?
A. Hypsochromic shift
B. Red shift
C. Blue shift
D. Hypsochromic shift with Blue shift
34 If solvent is non polar ans electron transition is n->π ∗which type of shift are seen in graph ?
A. Hypsochromic shift
B. Red shift
C. Blue shift
D. Hypsochromic shift with Red shift
35 Decrease in fluorescence intensity due to specific effect of constituents of the solution itself, it is called
A. fluorescence
B. Phosphorus
C. Quenching
D. Hydration
36 Collimator is used for?
A. EMR To focus on of the entrance slit.
B. EMR To get narrow beam source
C. EMR To fall on sample cell
D. EMR To disperse radiation
37 ____________________ is required for the IR spectroscopy ?
A. Dipole moment
B. Spin moment
C. Round moment
D. Linear moment
38 ____________ is responsible for uv absorption in a compound?
A. Auxochrome
B. Chromophore
C. Colour
D. Sigma bonds
39 IF Molecular weight is increase then what happen with fluorescence
A. fluorescence increase
B. No effect on fluorescence
C. fluorescence increases with increase in absorbance
D. fluorescence decrease
