Skip to content
10th Level - Practice App Completely Free · 100K+ Users Install

Kerala PSC junior Lab Assistant Previous Question Paper – 006/2023

Practice Mode

Sit all 96 questions full screen, one at a time. Sign in and your score, your time and where you got to are kept — put it down here and finish it on your phone.

Sign in to practise
Post Namejunior Lab Assistant
DepartmentMedical Education Service
Question Paper Code006/2023
Category Code011/2022, 076/2022
Date of Test21 January 2023
Medium of QuestionENGLISH
Exam TypeOMR Examination
Total Questions100
1
Acid present in chromic acid solution is
Answer
D. Sulphuric Acid
2
Beer-Lambert law is applied in the instrument
Answer
B. Colorimeter
3
Laboratory incubator is usually set with a temperature of
Answer
D. 37°C
4
Which of the following is used to keep chemicals free from water ?
Answer
B. Desiccators
5
Bleaching powder is prepared from
Answer
C. Hypochlorite
6
Solution in which no more salt is able to dissolve is
Answer
A. Saturate solution
7
Which of the following is an inflammable chemical ?
Answer
Question Cancelled
8
Reverse osmosis is used to prepare
Answer
B. Deionised water
9
Example for a chemical that is kept under water
Answer
B. Picric acid
10
Hospital wastes like used syringe, needle etc. are stored in which coloured bin ?
Answer
Question Cancelled
11
ABO blood group system was introduced by
Answer
D. Karl Landsteiner
12
In ACD solution erythrocytes get energy from
Answer
A. Glucose
13
Which of the following is not investigated during donor selection in blood bank ?
Answer
C. Relationship with patient
14
Vaccutainer with red top containg
Answer
C. No anticoagulant
15
Which anticoagulant inhibit thrombin ?
Answer
D. Heparin
16
Which type of the cells present in a healthy adult as 3 lakhs/cu mm of blood ?
Answer
B. Platelets
17
Leishman stain is an example for
Answer
A. Romanowsky stains
18
RBCs are lysed by acetic acid in
Answer
C. Turkes fluid
19
In a centrifuged blood sample, WBC appear
Answer
C. Between RBC and platelet
20
Reticulocytes are
Answer
A. Immature RBC
21
Length of westergrens pipette is
Answer
D. 300 mm
22
For CBC, blood is collected with anticoagulant
Answer
C. EDTA
23
Coulter counter is used for
Answer
C. CBC
24
In case of blood glucose estimation, delay in separation of serum from blood results in
Answer
B. Low glucose level
25
In Diabetes Mellitus, fruity odour of urine is due to the presence of
Answer
D. Acetone
26
Esbach’s reagent is
Answer
A. Picric acid and citric acid
27
Ketonuria is seen in
Answer
D. All the above
28
HbA1C level reveals the mean glucose level over a period of
Answer
A. Previous 12-14 weeks
29
Renal threshold of glucose is
Answer
C. 180 mg%
30
Multiple myeloma patient shows
Answer
D. Bence – Jones proteinuria
31
Reference value of creatinine clearance in female is
Answer
B. 80-115 ml/minute
32
Tumour marker of ovarian cancer is
Answer
D. CA 125
33
Enzyme that shows marked increase in obstructive liver disease is
Answer
A. Alkaline phosphatase
34
Non-enzymatic addition of any sugar to protein is called
Answer
C. Glycation
35
Test to the assess excretory function of liver is related to
Answer
D. Serum Bilirubin
36
Dry chemistry system, the reaction is measured by
Answer
C. Reflectance spectrophotometry
37
Leibermann-Burchard reaction is related to
Answer
D. Cholesterol
38
Conn’s syndrome is
Answer
A. Hyper aldosteronism
39
Chinese letter pattern is a characteristic feature of
Answer
B. Corynebacteria
40
Holding period of hot air oven is
Answer
C. 160°C for 1 hour
41
An example of indicator culture medium is
Answer
B. McLeod’s medium
42
Reagent for oxidase reaction of bacteria is
Answer
D. Tetra methyl p-phenylene diamine hydrochloride
43
Acid fastness of bacteria is due to the presence of
Answer
A. Mycolic acid
44
The parasite of benign tertian malaria is
Answer
B. P. vivax
45
In P. malariae infection, infected RBC shows
Answer
C. Ziemann’s dots
46
An example of clearing agent used for tissue processing in histopathology laboratory is
Answer
A. Cedar wood oil
47
Cold acetone is an example of
Answer
C. Histochemical fixative
48
__________ is used as preservative in Mayer’s haematoxylin stain.
Answer
D. Chloral hydrate
49
Stain used for hormonal evaluation in cytology is
Answer
B. Shorr’s stain
50
Routinely used cytological fixative is
Answer
D. 95% ethanol-ether mixture
51
If the percentage error in radius is 1% and the percentage error in length is 3%, what is the percentage error in calculating the volume of a cylinder ?
Answer
D. 5%
52
A particle moves with velocity 3 m/s east for a time t and with velocity 2 m/s north for a time 2t. Find the average velocity.
Answer
B. 5/3 m/s
53
Find the torque of a force 2�i � 2�j � 5k� about the origin. The force acts on the particle whose position vector is �i � �j � 2k� .
Answer
A. �9�i � �j � 4k�
54
A body weighs 50 N on the surface of the earth. What is the gravitational force on it due to the earth at a height equal to half the radius of the earth ?
Answer
Question Cancelled
55
Which of the following is correct for an adiabatic process ? (i) No heat exchange between system and surrounding. (ii) No temperature change. (iii) Slow process. (iv) Fast process.
Answer
A. (i) and (iv)
56
At what distance from the mean position, is the kinetic energy in a simple harmonic oscillator equal to potential energy ? a a
Answer
A. 9-
57
What is the force needed to lift a car, if a force of 50 N is applied to the smaller piston of radius 5 cm ? The radius of the larger piston is 15 cm.
Answer
B. 450 N
58
The resistance of the carbon resistor with colour code red, yellow, red, gold is
Answer
B. Range from 2280� to 2520�
59
The capacitance of a parallel plate capacitor is 10 �F. What happens to the capacitance, if the distance between the plates is reduced by half and the medium between the plates is filled with a medium of dielectric constant, 6 ?
Answer
C. 120 �F
60
The uses of microwaves are
Answer
A. used in radar systems
61
Find the value of the shunt resistance, if a galvanometer is converted to ammeter. The galvanometer resistance is 10� and it requires 5% of the main current as the current for full-scale deflection. 10 10
Answer
A. 10 �
62
The value of Bohr radius is
Answer
B. 5.29 × 10–11 m
63
The half-life period of a radioactive substance is 30 days. What is the time for of the original mass to disintegrate ? 4
Answer
B. 60 days
64
Two lenses of powers +6D and –2D are combined. The focal length of the combination is
Answer
B. .25 m
65
If the input frequency is 50 Hz, what is the output frequency in a full-wave rectifier ?
Answer
C. 100 Hz
66
Which of the following contains the greatest number of molecules ?
Answer
C. 1g H2
67
The total number of orbitals in an energy level designated by principal quantum number n is equal to
Answer
B. n2
68
Which of the following has lowest pH ?
Answer
A. 1M HCl
69
Which of the following is a secondary cell ?
Answer
B. Nickel-Cadmium cell
70
Smoke is an example of
Answer
D. Aerosol
71
Which among the following element has largest atomic radius ?
Answer
C. K
72
An antiseptic sold in the market as perhydrol
Answer
D. Hydrogen peroxide
73
Which ion is required for the coagulation of blood ?
Answer
B. Calcium
74
Name the gas formed when concentrated Nitric acid is added to copper.
Answer
A. NO2
75
Which of the following alloys contain Copper, Tin and Zinc ?
Answer
C. Gun metal
76
The IUPAC name for O O || || CH3 � C � CH2 � CH2 � C � OH is
Answer
A. 4-Oxopentanoic acid
77
Which of the following gives silver mirror with Tollen’s reagent ?
Answer
B. CH3 – CHO
78
Which of the following vitamin deficiency causes convulsion ?
Answer
C. Vitamin B6
79
Arsenic containing medicine used for the treatment of syphilis is
Answer
D. Salvarsan
80
Terylene is a condensation polymer of ethylene glycol and
Answer
B. Terephthalic acid
81
From the following plants, which one is a Dioecious plant ?
Answer
C. Date Palm
82
Seeds of certain flowering plants contain perisperm. What is perisperm ?
Answer
B. Persistent Nucellus
83
Ability of a plant cell to generate as a whole plant is known as
Answer
A. Totipotency
84
From the following find out a selectable marker.
Answer
D. amp
85
The process of Elution during electrophoresis is
Answer
D. Separated DNA fragments are cut out from agarose gel and extracted from gel piece
86
A single stranded DNA or RNA which is tagged with a radioactive molecule used in molecular diagnosis is known as
Answer
A. Probe
87
Name the Ecological Interaction between orchid and mango tree.
Answer
C. Commensalism
88
Name the ecological pyramid which is always upright.
Answer
D. Energy pyramid
89
Function of the nucleolus is
Answer
B. Biosynthesis of ribosome subunits
90
Terminalisation of Chiasmata occur at which stage of Prophase I ?
Answer
B. Diakinesis
91
The transmission of HIV infection in human being generally not occurs
Answer
C. By drinking water using the same glass
92
Pseudocoelom is found only in animals belonging to the phylum
Answer
B. Aschelminthes
93
Which factor is not favourable for the formation of oxyhaemoglobin in human being ?
Answer
C. high temperature
94
Name the cells which synthesize and secrete testacular hormones called androgens.
Answer
A. Leydig cells
95
‘Carbohydrates are not digested in the stomach of human being.’ The reason for this is (i) Pepsin can digest only small amount of carbohydrates. (ii) There are no carbohydrates in gastric juice. (iii) Salivary amylase becomes denatured by the HCl in stomach.
Answer
Question Cancelled
96
The QRS complex in an ECG of a man represents
Answer
A. Ventricular depolarisation
97
Name the chromosomal disorder in which the affected individual expresses Gynaecomastia.
Answer
B. Klinefelter’s Syndrome
98
In a transcription unit of DNA, the strand which acts as a template for RNA synthesis is known as
Answer
D. Template strand
99
An increase blood flow to atria of human heart stimulates the release of Atrial Natriuretic Factor
Answer
D. Statements (i) and (iv) are correct
100
One of the following organism is not included in the phylum Mollusca.
Answer
C. Ophiura

Related reading

Discussion

Ask a doubt or share a tip.

No comments yet — start the discussion.

Leave a comment

Your email address and number are never published. Required fields are marked

We will email you a code to confirm the address. Posting creates a PSCNET account if you do not have one.

By posting, you agree to our Privacy Policy.