Assistant Chemical Examiners Laboratory Answer Key 11/2019

hospital lab

Post: Assistant Chemical Examiners Laboratory, Sanitary Chemist
Department: Kerala Minerals and Metals, Kerala Water Authority, State Framing corporation of Kerala
Category Code: 343/2017, 364/2017, 442/2017, 568/2017
Question Paper: 11/19
Qualification: B Sc Chemistry
Date of Test: 01-03-2019


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  1. The emission of an α-particle and two β-particles in succession produces an    of the starting atom.
    • Isotope
    • Isobar
    • Isotone
    • Isomer

  2. The order of the C2V point group is
    • 3
    • 4
    • 1
    • 2

  3. Among CO, NO, HCl and CO2, that which will not yield a microwave spectrum is
    • CO
    • NO
    • HCl
    • CO2

  4. The number of normal modes of vibration of C6H6 molecule is
    • 30
    • 36
    • 31
    • 35

  5. The π donor ligand in Ziese's salt is
    • Chlorine
    • Ethylene
    • Acetylene
    • Carbonyl

  6. The number of signals exhibited by the protons of TMS in its NMR spectrum is
    • 2
    • 1
    • 3
    • 4

  7. The hybridization of Nitrogen atom in NH3
    • sp3
    • sp2d
    • sp3d
    • sp

  8. Radioactive disintegration follows __________  order kinetics.
    • First order
    • Zero order
    • Second order
    • Third order

  9. The emission of radiant energy after a time lag after its absorption by a substance is called
    • Fluorescence
    • Phosphorescence
    • Vibrational relaxation
    • Inter system crossing

  10. The ionic character of LiCl, NaCl, KCl, RbCl and CsCl follows the order
    • LiCl > NaCl > KCl > RbCl > CsCl
    • LiCl < NaCl < KCl < RbCl < CsCl
    • LiCl = NaCl < KCl =RbCl < CsCl
    • NaCl > LiCl > KCl > RbCl > CsCl

  11. Which among the following is the optical property of colloid?
    • Brownian movement
    • Electrophoresis
    • Tyndal Effect
    • Electro osmosis

  12. How many isoprene units are present in a monoterpenois?
    • 3
    • 4
    • 2
    • 1

  13. The oxidation number of Cr in Cr2O72- is
    • +7
    • +6
    • +5
    • +4

  14. The reagent used in Benzoin condensation
    • OH-
    • EtO-
    • CN*
    • CH3COO-

  15. Which indicator is used in Iodometric titration?
    • Eriochrome Black T
    • Starch solution
    • N-Phenyl anthranilic acid
    • Methyl Orange

  16. The ligand denticity of EDTA is
    • 6
    • 5
    • 4
    • 3

  17. The number of particles per unit cell of BCC is
    • 4
    • 2
    • 1
    • 6

  18. The total number of crystal systems present is
    • 8
    • 32
    • 7
    • 31

  19. The principle of liquid-gas chromatography is
    • Adsorption
    • Absorption
    • Partition
    • None of these

  20. Which metal ion is present in Vitamin B-12?
    • Cobalt
    • Nickel
    • Iron
    • Copper

  21. How many oxygen molecules are carried by a single Haemoglobin molecule?
    • 4
    • 3
    • 2
    • 1

  22. How many significant figures are there in the quantity 0.0063g?
    • 3
    • 4
    • 2
    • 1

  23. How many peaks are observed in the IR spectrum of CO2 molecule?
    • 3
    • 4
    • 2
    • 1

  24. Asbestos is an example of
    • Cyclic
    • Sheet silicate
    • Chain
    • Three dimensional

  25. Rutile is an ore of
    • Titanium
    • Iron
    • Aluminium
    • Zinc

  26. The highest oxidation state shown by the transition element is
    • +7
    • +8
    • +6
    • +5

  27. The intense violet colour of KMnO4 is due to    transition.
    • Charge transfer
    • d-d transition
    • f-f transition
    • Lanthanide contraction

  28. What is the CFSE for an octahedral high spin d4 system?
    • —12Dq
    • —6Dq
    • —24Dq
    • —18Dq

  29. Which one of the following metal carbonyls does not obey the EAN rule?
    • Ni(CO)4
    • Fe(CO)5
    • Cr(CO)6
    • V(CO)6

  30. The co-ordination number of iron in haemoglobin
    • 4
    • 5
    • 6
    • 7

  31. What designation is given to a sublevel having n=4, l=1?
    • 4p
    • 4s
    • 4d
    • 4f

  32. Be shows a diagonal relationship with
    • Al
    • Mg
    • Si
    • Na

  33. The state of hybridisation of Be in BeF2
    • sp3
    • sp2d
    • sp3d
    • sp

  34. But-l-ene can be converted to butane by reaction with
    • Pd/H2
    • Zn/HC/
    • Sn-HC/
    • Zn-Hg

  35. Which of the following compounds show geometrical isomerism?
    • Cyclopropane
    • Cyclobutane
    • 1,2-dimethylcyclopropane
    • None of these

  36. Which of the following compounds is aromatic?
    • Cyclobutadiene
    • Cyclooctatetraene
    • Cyclopropene
    • Cyclopentadienyl anion

  37. The monomer of natural rubber is
    • 2-methyl- 1 ,3-butadiene
    • 1 ,3-butadiene
    • 1,3-pentadiene
    • 2-methyl- 1 ,3-pentadiene

  38. Which alkaloid is present in Hemlock seed?
    • Coniine
    • Quinine
    • Piperine
    • Morphine

  39. Sea water will boil at a temperature
    • Higher than pure water
    • Lower than pure water
    • Same as that of pure water
    • Cannot be predicted

  40. Producer gas is a mixture
    • CO+H2
    • CO+H20
    • CO+N2
    • C0+02

  41. For a spontaneous process the free energy change should be
    • Positive
    • Negative
    • Either positive or negative
    • Zero

  42. A system which can exchange neither energy nor matter with surroundings is called
    • Open system
    • Closed system
    • Isolated system
    • Independent system

  43. Vibrational spectra will be obtained by the absorption of :
    • Microwave radiation
    • IR radiation
    • Ultraviolet radiation
    • Visible radiation

  44. Which point group does CO2 molecule belongs to?
    • Dαh
    • C3v
    • C2h
    • Cαv

  45. Which one of the following is a Zn containing enzyme?
    • Cytochrome P-450
    • Tyrosinase
    • Alcohol dehydrogenase
    • Cytochrome oxidase

  46. The alkaloid used as an antimalarial drug :
    • Atropine
    • Cocaine
    • Quinine
    • Coniine

  47. The heat of neutralisation when a strong acid is neutralised by a strong base :
    • —57 kJ/mole
    • 57 Cals/mole
    • —57 J/mole
    • —57 k.Cals/mole

  48. Which defect causes a decrease in density?
    • Schottky
    • Frenkel
    • Metal excess
    • F-centre

  49. The radius ratio of octahedral void is
    • 0.414
    • 0.225
    • 0.0414
    • 0.0225

  50. The pH of a 0.001 M HCl solution is :
    • 2
    • 3
    • 4
    • 1

  51. How many signals would be expected in the NMR spectrum of (CH3)3CCl?
    • One signal
    • Two signal
    • Three signal
    • Nine signal

  52. The monomer of Orlon :
    • Formaldehyde and phenol
    • Ethylene glycol
    • Vinyl cyanide
    • Adipicacid and hexamethylene diamine

  53. Which of the following is a Nitro dye?
    • Methyl orange
    • Aniline yellow
    • Martius yellow
    • Methyl blue

  54. Which one is the strongest base among the following?
    • CH3NH2
    • (CH3)2NH2
    • NH3
    • (CH3)3NH2

  55. Aspirin is
    • Acetyl salicylic acid
    • Ethoxy benzoic acid
    • Methoxy benzoic acid
    • Acetyl oxalic acid

  56. Which acid is used for cleaning glass wares in the laboratory?
    • Sulphuric acid
    • Hydrochloric acid
    • Nitric acid
    • Chromic acid

  57. Cellulose is a linear polymer of :
    • α-D-glucose
    • β-D-glucose
    • D-fructose
    • Sucrose

  58. Rickets is caused by the deficiency of :
    • Vitamin-A
    • Vitamin-B
    • Vitamin-D
    • Vitamin-K

  59. The —COOH group in carboxylic acid can be replaced by H atom by :
    • Zn and HCl
    • H2 with Ni
    • Sodalime
    • LiAlH4

  60. Barbituric acid and its derivatives are well known
    • Antiseptics
    • Antipyretics
    • Tranquilizers
    • Analgesics

  61. The isomers that are interconverted through rotation around a single bond are called :
    • Epimers
    • Anomers
    • Enantiomers
    • Conformations

  62. Maleic acid and fumaric acid are the forms of :
    • Chain isomers
    • Optical isomers
    • Geometrical isomers
    • Epimers

  63. In contact process for the manufacture of sulphuric acid, the catalyst is :
    • Finely divided iron
    • Nickel powder
    • LiAlH4
    • V2O5

  64. BF3 is an acid according to
    • Arrhenius concept
    • Bronsted-Lowry concept
    • Ostwald
    • Lewis concept

  65. How many coulombs of electricity are required to produce 20.0g of calcium from molten CaCl2?
    • 57900 C
    • 96500 C
    • 10800 C
    • 48250 C

  66. The cell constant of a cell is equal to :
    • a/I
    • I/a
    • a-I
    • I-a
    Question Error

  67. The reduction potential of two half cells Mg2+/Mg and Cue2+/Cu are —2.37 V and +0.34 V respectively. The cell potential is
    • —2.03 V
    • 2.71 V
    • 1.36 V
    • 2.3 V

  68. At equilibrium state :
    • ΔG is positive
    • ΔH is negative
    • ΔG is zero
    • ΔH is positive

  69. The heat absorbed by the system at constant pressure is
    • ΔE
    • ΔH
    • ΔG
    • ΔS

  70. How many unpaired electrons are present in Cu+ ion?
    • 2
    • 1
    • 0
    • 3

  71. According to Hund's rule, the number of unpaired electrons in nitrogen atom will be
    • 2
    • 1
    • 5
    • 3

  72. Which type of isomerism is shown by [Co(NH3)5NO2]Cl?
    • Ionization
    • Linkage
    • Co-ordination
    • Geometrical

  73. Which one is a homopolymer?
    • PVC
    • Nylon 6
    • Nylon 6,6
    • Terylene
    Question Error

  74. Three letters ABC can be arranged in _____ number of ways.
    • 6
    • 4
    • 8
    • 12

  75. The internuclear distance remains constant during electronic excitation. This assumption is :
    • Morse
    • Huckel rule
    • Born Oppenheimer
    • Frank Condon

  76. A bond stretching frequency around 1700cm-1 is due to
    • C=N
    • C-Cl
    • C=O
    • C=C

  77. Which of the following is an auxochrome?
    • -NH2
    • - N=N-
    • -C=C-
    • - NO2

  78. For phenol-water system, the critical solution temperature is
    • 65.1 °C
    • 68.1 °C
    • 76.2 °C
    • 39.5 °C

  79. a-helical structure refers to the    structure of protein.
    • Primary
    • Secondary
    • Tertiary
    • Quaternary

  80. Bhopal Tragedy is due to :
    • Ethyl isocyanate
    • Propyl isocyanate
    • Phenyl isocyanate
    • Methyl isocyanate

  81. Which is the largest News Agency in the World?
    • Associated Press
    • Telam
    • Tanjug
    • Press Trust of India

  82. The Cyclone affected India, Sri Lanka and the Maldives in November 2017 :
    • BOB06
    • Vardah
    • Ockhi
    • Hudhud

  83. In the Census of 2011 the Male literacy rate in India
    • 65.46
    • 74.04
    • 81.02
    • 82.14

  84. The famous Hajjur Inscription was issued by the Ay king Karunandadakkan in the year
    • AD 999
    • AD 1000
    • AD 974
    • None of these

  85. The Prime Minister Narendra Modi launched the Programme on 2nd Oct., 2014 to make clean India :
    • Nirmal Bharat Programme
    • Swachh Bharat Abhiyan
    • Make in India
    • Saansad Adarsh Grama Yojana

  86. The first Greek Tennis player to win an ATP World Tour Title of Stockholm Open
    • Ernest Gulbis
    • Rafael Nadal
    • Stefanos Tsitsipas
    • Roger Federer

  87. "Mandan Muthappa" is a character created by
    • Thoppil Bhasi
    • Vaikkom Muhammed Bhasheer
    • Thakazhi Sivasankara Pillai
    • MT Vasudevan Nair

  88. The Cabinet Mission came to India to discuss transfer of power to India on
    • 24th March, 1946
    • 22nd March, 1942
    • 9th August, 1942
    • 12th August, 1945

  89. The winner of Dadasaheb Phalke Award 2018
    • Kasinathuni Viswanath
    • Manoj Kumar
    • Shashi Kapoor
    • Vinod Khanna

  90. Who was the founder of All Travancore Muslim Mahajan Sabha?
    • Vakkom Maulavi
    • P.K. Khadeeja
    • Mujeeb Rahman Kinalur
    • None of these

  91. The book "Poikayil Yohannan" was written by
    • V.V. Shanthakumar
    • Kumaran
    • M.R. Renukumar
    • M.K. Sanu

  92. The winner of Kendra Sahithya Academy Award 2017 for his novel "Daivathinte Pusthakam"
    • Prabha Varma
    • K.P. Ramanunni
    • K.R. Meera
    • R. Narayana Panicker

  93. Who was the first woman Secretary General of Rajya Sabha?
    • Snehlata Shrivastava
    • Kiran Bedi
    • Ramadevi
    • Kamala Beniwal
    Snehlata Shrivastava - First woman Secretary General of the Lok Sabha

  94. International Day for preventing the exploitation of Environment in War and Armed conflict
    • November 11
    • November 6
    • November 5
    • November 1

  95. The Environment Protection Act was passed in the year
    • 1988
    • 1968
    • 1989
    • 1986

  96. The place where 27th Fusion Energy Conference (FEC 2018) held at
    • Gujarat
    • Delhi
    • Maharashtra
    • Kerala

  97. Who leads the Revolt of 1857 at Lucknow?
    • Begam Hazrat Mahal
    • Kunwar Singh
    • Rani Lakshmi Bai
    • Khan Bahadur Khan

  98. The incident prompted Gandhi to call off the Non-cooperation Movement :
    • Wagon Tragedy
    • Jallianwalla Bagh
    • Chauri Chaura Incident
    • Khilafat Movement

  99. The most important coastal port town of Kerala during the Sangam Period :
    • Nelkinda
    • Quilon
    • Kozhikode
    • Muziris

  100. The social reformer who organized Kallumala Agitation in Kerala
    • K. Kelappan
    • Ayyankali
    • Mannath Padmanabhan
    • Vaikunda Swamikal

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2 comments

  1. Q 13. Snehalatha sreee vasthava

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  2. Snehlata Shrivastava, First woman Secretary General of the Lok Sabha

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