Held in 2024
Paper last updated:
Take this paper as a timed mock test. Review your answers after you submit.
Read the paper at your pace. Open an explanation when you need it.
Which of the following CANNOT be considered as a measure to control global warming?
Efficiently using energy
Cutting down use of fossil fuel
Reduction in emission of greenhouse gases
Causing deforestation
Correct answer
Efficiently using energy
What is the maximum number of Ministers allowed in the Council of Ministers, including the Prime Minister, as per the 91st Amendment Act?
12% of Lok Sabha strength
10% of Lok Sabha strength
15% of Lok Sabha strength
20% of Lok Sabha strength
Correct answer
12% of Lok Sabha strength
What is the net force acting on an object if balanced forces are applied?
Equal to the mass of the object
Zero
Equal to acceleration
Infinite
Correct answer
Equal to the mass of the object
Which of the following is NOT a source of release of smokestacks?
Rivers
Smelters
Thermal power plants
Industries
Correct answer
Rivers
What is the primary purpose of using a firewall on a Personal Computer?
To increase storage space
To block unauthorised access and protect the computer
To clean up temporary files
To speed up internet connectivity
Correct answer
To increase storage space
The energy that is derived from the use of radioactive isotopes is termed as _________.
thermal energy
solar energy
geothermal energy
nuclear energy
Correct answer
thermal energy
The fine powder that is obtained from the modified and recycled form of plastic is called
_______.
polyblend
polystyrene
polyethylene
polythene
Correct answer
polyblend
Which of the following is NOT toxic to non-target organisms in the soil?
Organic fertilisers
Pesticides
Herbicides
Fungicides
Correct answer
Organic fertilisers
What does PCB stand for?
Processing Circuit Board
Peripheral Connection Bus
Primary Control Board
Printed Circuit Board
Correct answer
Processing Circuit Board
Which of the following is NOT a component of a CPU?
Arithmetic Logic Unit (ALU)
Hard Disk
Cache Memory
Control Unit (CU)
Correct answer
Arithmetic Logic Unit (ALU)
In which of the following regions the Himalayas has the greatest width?
Sikkim
Kashmir
Himachal Pradesh
Arunachal Pradesh
Correct answer
Sikkim
Which official in the Gupta administration was responsible for peace and war matters?
Vishayapati
Sandhi-Vigrahika
Mahapratihara
Mahadandanayaka
Correct answer
Vishayapati
Which of the following is a characteristic difference between colloids and true solutions?
True solutions have visible solute particles, whereas colloids have invisible dispersed particles.
True solutions have a single-phase system, whereas colloids have a two phase system.
True solutions exhibit Brownian motion, but colloids do not.
True solutions show the Tyndall effect, but colloids do not.
Correct answer
True solutions have visible solute particles, whereas colloids have invisible dispersed particles.
Which of the following cities hosted the inaugural Kho Kho World Cup in January 2025?
Chennai
New Delhi
Mumbai
Kolkata
Correct answer
Chennai
The primary agent that helps in the decomposition of biodegradable matter in domestic sewage is __________.
chloride
nitrate
bacterium
phosphate
Correct answer
chloride
What is the first step to securing ones smartphone or tablet?
Setting a password/PIN-protected lock screen
Turning off mobile data
Using only free Wi-Fi networks
Installing more apps
Correct answer
Setting a password/PIN-protected lock screen
What is the approximate pH of a neutral salt solution?
Less than 7
Depends on the temperature
More than 7
Equal to 7
Correct answer
Less than 7
Why does a bee sting cause pain and irritation?
The sting releases carbon dioxide gas.
The sting injects a mild sugar solution.
The sting injects methanoic acid.
The sting contains a strong base.
Correct answer
The sting releases carbon dioxide gas.
If you want the primary recipient to see that others have received a copy of an email, you should enter their email addresses in the ______ field.
Bcc
Cc
Subject
To
Correct answer
Bcc
What is the purpose of the Collation option in the Print settings?
To print all the pages of a document as a set
To select a custom print range
To adjust the page orientation
To change the printer selection
Correct answer
To print all the pages of a document as a set
The Rudra Veena is predominantly associated with which genre of Hindustani music?
Thumri
Dhrupad
Khayal
Ghazal
Correct answer
Thumri
Which of the following correctly represents the chemical formula of a compound formed by aluminium and sulphate ions?
Al(SO4)3
Al2SO4
Al2(SO4)3
Al3(SO4)2
Correct answer
Al(SO4)3
Which of the following states is NOT covered under the Atal Bhujal Yojana?
Maharashtra
Rajasthan
Jharkhand
Uttar Pradesh
Correct answer
Maharashtra
The phenomenon of multiple echoes due to repeated reflections is called ___________.
resonance
refraction
diffraction
reverberation
Correct answer
resonance
If the absolute refractive index of a medium is less than 1, it means ________.
light travels faster in that medium than in vacuum
the medium is a perfect reflector
the medium absorbs all light
light travels slower in that medium than in vacuum
Correct answer
light travels faster in that medium than in vacuum
The Millennium Development Goals (MDGs) aimed to reduce extreme poverty by which year?
2008
2015
2005
2014
Correct answer
2008
Which defect of vision occurs due to the weakening of ciliary muscles with age?
Astigmatism
Hypermetropia
Myopia
Presbyopia
Correct answer
Astigmatism
Which state of matter shows the highest expansion when temperature is increased?
Solids
Gases
Liquids
Plasma
Correct answer
Solids
What is the primary function of the F4 key in MS Excel when editing a cell reference in a formula?
Opens the Find and Replace dialog
Toggles between absolute and relative references
Repeats the last action
Refreshes the worksheet
Correct answer
Opens the Find and Replace dialog
The main use of chlorofluorocarbons is in __________.
smog
chimneys
refrigerants
vehicles
Correct answer
smog
Which of the following is the correct way to insert a new column in a spreadsheet?
Go to Home > Insert > Insert Sheet Columns.
Go to File > New > Column.
Use Ctrl + Z to insert a column.
Press Ctrl + X and then Insert.
Correct answer
Go to Home > Insert > Insert Sheet Columns.
What is the shortcut key to start a slideshow from the beginning?
F5
Alt + Tab
Shift + F5
Ctrl + P
Correct answer
F5
Which of the following companies announced plans in February 2025 to construct the world's longest undersea cable, aiming to enhance internet connectivity across five continents, with landing points in India?
Amazon
Meta
Microsoft
Correct answer
Amazon
What is India's global military ranking in the 2025 Global Firepower (GFP) index?
5th
2nd
4th
3rd
Correct answer
5th
What happens when an acid reacts with a metal oxide?
Only salt is formed.
A salt and hydrogen gas are formed.
A salt and water are formed.
Only water is formed.
Correct answer
Only salt is formed.
Dr. BR Ambedkar described which part of the Indian Constitution as its ‘novel features', while Granville Austin referred to it as the ‘Conscience of the Constitution’?
Directive Principles of State Policy
Fundamental Rights
Preamble
Fundamental Duties
Correct answer
Directive Principles of State Policy
If an object is dropped from rest, what will be its velocity after 15 seconds? (g = 9.8 m/s2)
143 m/s
149 m/s
145 m/s
147 m/s
Correct answer
143 m/s
What happens when a computer is put into Sleep mode?
It shuts down completely.
It stores data on the hard drive and powers off.
It restarts automatically after a few minutes.
It keeps the session active in RAM while using minimal power.
Correct answer
It shuts down completely.
The glass panel used in greenhouses is known to retain ________.
humidity
heat
pH
rainfall
Correct answer
humidity
Inertia depends on which property of an object?
Shape
Acceleration
Velocity
Mass
Correct answer
Shape
The practice of Jhum cultivation is prevalent in the __________.
South west
North west
North east
South east
Correct answer
South west
Which of the following correctly explains why clothes dry faster on a windy day?
Wind decreases the temperature of the water molecules.
Wind removes the water vapour from the clothes’ surroundings.
Wind increases the humidity around the clothes.
Wind reduces the surface area of the clothes.
Correct answer
Wind decreases the temperature of the water molecules.
The maximum sound is generated _________.
from vehicular emissions
from house chimneys
from industrial smoke
by the take off of a jet plane
Correct answer
from vehicular emissions
Identify the correct formula for the compound formed between Mg2+ and PO43− ions.
Mg(PO4)3
Mg3(PO4)2
Mg2(PO4)3
MgPO4
Correct answer
Mg(PO4)3
What was the main objective of the Extremists during the Indian National Movement?
To attain complete independence (Swaraj)
To promote British goods in India
To expand the legislative councils
To bring social reforms
Correct answer
To attain complete independence (Swaraj)
According to the Tendulkar methodology, what was the estimated percentage of people below the poverty line in rural areas in 2011-12?
27.5%
20%
25.7%
15.5%
Correct answer
27.5%
The Industrial Policy Resolution of 1956 categorised industries into how many groups?
Five
Three
Nine
Seven
Correct answer
Five
Which Article provides Ministers the right to participate in parliamentary proceedings but without voting rights?
Article 88
Article 78
Article 53
Article 77
Correct answer
Article 88
In an electric circuit, what is the correct way to connect an ammeter?
In either series or parallel
In parallel with the component
In series with the component
In parallel with the source
Correct answer
In either series or parallel
Who among the following inaugurated the 38th National Games held in Dehradun in January 2025?
Narendra Modi
Pushkar Singh Dhami
Anurag Thakur
Droupadi Murmu
Correct answer
Narendra Modi
What is a significant environmental concern associated with using non-renewable energy sources?
Water scarcity
Habitat destruction
Greenhouse gas emissions
Overpopulation
Correct answer
Water scarcity
Which of the following is a common industrial method for preparing ammonium nitrate?
Haber-Bosch process
Electrolysis of ammonium salts
Metathesis reaction
Neutralisation of ammonia with nitric acid
Correct answer
Haber-Bosch process
Which of the following is an INCORRECT statement about hard water?
Hard water contains dissolved calcium and magnesium salts
Hard water lowers the boiling point of water
Hard water does not lather well with soap and forms white scum
Hard water decreases the cleansing ability of soap
Correct answer
Hard water contains dissolved calcium and magnesium salts
Which of the following queries will correctly retrieve the name of Professor from Professor table with ID 101, 102 or 104?
SELECT NAME FROM Professor WHERE id CONTAINS (101, 102, 103);
SELECT NAME FROM Professor WHERE id BETWEEN 101 AND 103;
SELECT NAME FROM Professor WHERE id IN (101, 102, 104);
SELECT NAME FROM Professor WHERE id = (101, 102, 103);
Correct answer
SELECT NAME FROM Professor WHERE id CONTAINS (101, 102, 103);
Which of the following types of coke ovens are heated from outside and the heat required for carbonisation is transmitted through the side walls?
Beehive ovens
Flatter and wider ovens
Non recovery ovens
Slot type by-product recovery ovens
Correct answer
Beehive ovens
What is the primary use of gasoline as a petroleum product?
Manufacturing plastics
Lubricating machinery
Heating homes
Powering internal combustion engines
Correct answer
Manufacturing plastics
What is the primary combustible component of producer gas?
Nitrogen
Carbon monoxide
Hydrogen
Carbon dioxide
Correct answer
Nitrogen
Arrange the following materials in descending order, as per the value of their thermal conductivity.
Pure iron
Liquid water
Steam
Pure Brass
4-3-2-1
4-1-2-3
2-3-1-4
1-2-3-4
Correct answer
4-3-2-1
Which of the following factors favours high thermal stability of coke in the blast furnace?
High chemical reactivity
Absence of large lumps in feed coke
Low carbonisation temperature
Maximum inert inclusions of large sizes
Correct answer
High chemical reactivity
What will be the output of the following C code?
#include <stdio.h>
void main()
{
int x = 10 v = 20
printf("%d",!(x < y) ? ++x : y);
}
20
10
30
11
Correct answer
20
Which of the following ceramics has a two-layer silicate sheet structure?
Silica glass
Kaolinite clay
Silica
Fullerene
Correct answer
Silica glass
Which of the following is the chemical name of natural rubber?
Chloroprene
Acrylonitrile-butadiene copolymer
Styrene-butadiene copolymer
Polyisoprene
Correct answer
Chloroprene
Select the correct pair related to types of doors and their features.
Collapsible door - Made of PVC panels
Revolving door - Made of shutter slide on sides with help of runners and guided rails
Battened and ledged door - Made of vertical bond and horizontal supports
Flush door - Made of single wood plank
Correct answer
Collapsible door - Made of PVC panels
The mass density of water is in the standard conditions.
1000 kg/m³
10 kg/m³
1 kg/m³
100 kg/m³
Correct answer
1000 kg/m³
Which of the following options correctly identifies Data Control Language (DCL) commands in SQL Query?
CREATE, DROP
GRANT, REVOKE
SELECT, INSERT
UPDATE, DELETE
Correct answer
CREATE, DROP
A surveyor is conducting a compass survey between two stations, A and B. The observed fore bearing (FB) of line AB is 124°30'. Determine the back bearing (BB) of line BA, considering there is no local attraction.
94°30'
234°30'
214°30'
304°30
Correct answer
94°30'
What is the primary component of LPG (liquefied petroleum gas)?
Methane
Carbon dioxide
Nitrogen
Propane
Correct answer
Methane
Which of the following is an example of a web hosting control panel?
Apache
cPanel
MySQL
PHP
Correct answer
Apache
Which of the following is NOT a part of the gating system?
Runner
Gate
Core
Sprue
Correct answer
Runner
In which application(s) is/are load cells commonly used?
Weighing scales and industrial force measurement
Electromagnetic wave measurement
Temperature measurement
Sound level detection
Correct answer
Weighing scales and industrial force measurement
A BJT will operate in an active region if——
an emitter base junction is reverse biased and a collector base junction is forward biased
an emitter base junction is forward biased and a collector base junction is forward biased
an emitter base junction is reverse biased and a collector base junction is reverse biased
an emitter base junction is forward biased and a collector base junction is reverse biased
Correct answer
an emitter base junction is reverse biased and a collector base junction is forward biased
At constant pressure, volume of expansion coefficient of a substance represents the variation of—— .
viscosity with temperature
density with temperature
specific heat with volume
thermal conductivity with volume
Correct answer
viscosity with temperature
Theoretically, If Eb = V in a DC motor, the motor is likely operating at——.
a stalled condition
no load
overload
full load
Correct answer
a stalled condition
Which of the following is NOT a method of ranging used in chaining?
Optical ranging
Reciprocal ranging
Indirect ranging
Direct ranging
Correct answer
Optical ranging
Which of the following characteristics is the least desirable in a building stone used for foundation construction?
High water absorption
Good durability
Low porosity
High compressive strength
Correct answer
High water absorption
Which of the following is the relation between the atomic radius, r, and the lattice parameter, a, for the BCC crystal?
r =a
\(\ r = \frac{a}{2\sqrt{2}}\)
\(\ r = \frac{a\sqrt{3}}{4} \)
\(\ r = a\sqrt{2}\)
Correct answer
r =a
What is a common method to reduce friction between two surfaces?
Applying a lubricant
Roughening the surface
Increasing the pressure
Increasing the surface area
Correct answer
Applying a lubricant
Which of the following elements is primarily responsible for the corrosion resistance of stainless steel?
Molybdenum
Nickel
Carbon
Chromium
Correct answer
Molybdenum
Which of the following types of electrical currents is commonly used in arc welding?
Only Alternating Current (AC)
Only static electricity
Both AC and DC, depending on the welding process and material
Only Direct Current (DC)
Correct answer
Only Alternating Current (AC)
Which of the following operators is used to find the remainder after division?
/
%
Correct answer
/
In a Zener diode voltage regulator circuit, what is the purpose of the series resistor (Rs) connected between the input voltage source and the Zener diode?
To drop the excess voltage and regulate the output
To filter out noise and ripples in the input voltage
To limit the current through the Zener diode
To increase the voltage rating of the Zener diode
Correct answer
To drop the excess voltage and regulate the output
Which of the following is the main objective of primary wastewater treatment?
To use biological processes to break down organic matter
To remove all bacteria and virus from the water
To remove floating materials and settleable solids
To add chemicals to disinfect the water
Correct answer
To use biological processes to break down organic matter
What are the two main types of junction capacitance in a PN-junction diode, based on charge storage?
Diffusion capacitance and transition capacitance
conduction capacitance and breakdown capacitance
Stray capacitance and conduction capacitance
Stay capacitance and leakage capacitance
Correct answer
Diffusion capacitance and transition capacitance
The stress-strain behaviour of which of the following polymeric materials shows large recoverable strains produced at low stress levels?
Thermosetting polymer
Plastic polymer
Brittle polymer
Elastomer
Correct answer
Thermosetting polymer
What will be the output of the following C code?
#include <stdio.h>
void main()
{
int x=10,result=0;
if (x > 2)
result = x + 2
printf("%d", result);
}
1.6
2.0
3.13
12
Correct answer
1.6
A concave mirror is used to form an image of an object. The object distance (u) is 30 cm and the image distance (v) is 15 cm. Calculate the focal length (f) of the mirror.
-10 cm
-30 cm
10 cm
30 cm
Correct answer
-10 cm
What is NOT the unit of measurement for water hardness?
Milligrams of calcium carbonate per litre
Parts per million
Grams per gallon
Grains per gallon
Correct answer
Milligrams of calcium carbonate per litre
How does the limiting value of static friction depend on the area of contact?
Independent of area
Directly proportional to (area)2
Inversely proportional to area
Directly proportional to area
Correct answer
Independent of area
At what temperature does ammonium sulphate become ferroelectric?
0ºC
100ºC
25ºC
-49.5ºC
Correct answer
0ºC
Which of the following polymers are linear polymers with flexible chains?
Phenolics
Epoxies
Network polymers
Polyethylene
Correct answer
Phenolics
An ideal refrigeration machine has a fixed lower temperature. The COP of the machine can be increased by——
decreasing the operating speed of the machine
increasing the higher temperature
increasing the operating speed of the machine
decreasing the higher temperature
Correct answer
decreasing the operating speed of the machine
Which of the following transmission modes is most suitable for voice -over IP (VoIP)?
Simplex
Parallel
Half-duplex
Full-duplex
Correct answer
Simplex
What is primary function of a rectifier?
To regulate output signal
To amplify the input signal
To convert AC signal in DC signal
To filter out unwanted frequencies
Correct answer
To regulate output signal
The Control Unit receives opcode information from the:
Data Register
Program Counter (PC)
Memory Address Register (MAR)
Instruction Register (IR)
Correct answer
Data Register
What is a significant impact of pollution on biodiversity?
Extinction of sensitive species
Improved soil fertility
Enhanced aquatic ecosystems
Increase in species diversity
Correct answer
Extinction of sensitive species
Which property of tin makes it suitable for use in solder?
High density
High electrical conductivity
Corrosion resistance
Low melting point
Correct answer
High density
Which property makes melamine foam suitable for soundproofing applications?
Low thermal conductivity
High porosity
Chemical reactivity
High density
Correct answer
Low thermal conductivity
In a common emitter configuration the current amplification factor is expressed as——
\((\Delta I_C / \Delta I_B){V{CE}} \)
\((\Delta I_E / \Delta I_C){V{CE}}\)
\((\Delta I_C \times \Delta I_B){V{CE}} \)
\((\Delta I_B / \Delta I_C){V{CE}}\)
Correct answer
\((\Delta I_C / \Delta I_B){V{CE}} \)
What is the effect of subcooling on the performance of a vapour compression refrigeration cycle?
It decreases the refrigeration effect.
It increases the condenser pressure.
It increases the refrigeration effect.
It reduces compressor work.
Correct answer
It decreases the refrigeration effect.
Read the following statements regarding a piezoelectric transducer and select which is/are correct.
A. The use of piezoelectric transducer element is confined primarily to dynamic measurement.
B. Piezoelectric material, used in an underwater detection system, is known as sonar.
Only B
Only A
Neither A nor B
Both A and B
Correct answer
Only B
Which of the following techniques is used in time-sharing systems to ensure fair CPU allocation?
First-come-first-served scheduling
Priority scheduling
Shortest job first scheduling
Round-robin scheduling
Correct answer
First-come-first-served scheduling
Which IEEE standard defines Ethernet LAN (Local Area Network)?
IEEE 802.3
IEEE 802.15
IEEE 802.5
IEEE 802.11
Correct answer
IEEE 802.3
What is the term for flowing water ecosystems like rivers and streams?
Lentic
Lotic
Marine
Wetland
Correct answer
Lentic
Which of the following is NOT a typical application for high carbon steel?
Springs
Cutting tools
Knives
Structural beams
Correct answer
Springs
For a simply supported beam of span L subjected to a central point load P, the shear force just to the left of the load is _______.
P/2
P/4
P
0
Correct answer
P/2
A radiator, in a domestic heating system, operates at a temperature of 27°C. The heat flux at the surface of a radiator, if it behaves as a black body, will be ______.
45.927 W/m2
4.5927 W/m2
4592.7 W/m2
459.27 W/m2
Correct answer
45.927 W/m2
Reynolds number can be represented as the ratio of:
Inertia force to Viscous force
Viscous force to Buoyancy force
Viscous force to Inertia force
Buoyancy force to Viscous force
Correct answer
Inertia force to Viscous force
In which of the following processes does the formation of polymers occur by stepwise intermolecular chemical reactions that may involve more than one monomer species and there is usually a small molecular weight byproduct such as water?
Crystallisation
Condensation polymerisation
Chain reaction polymerisation
Addition polymerisation
Correct answer
Crystallisation
Which of the following is added to natural rubber and heated to make ebonite?
Sulphur
Phosphorous
Magnesium
Calcium
Correct answer
Sulphur
Which of the following polymers have the lowest coefficient of thermal expansion?
Network polymers
Thermoplastic polymers
Linear polymers
Branched polymers
Correct answer
Network polymers
What is the phenomenon that occurs in some thermoplastic polymers in which very localised plastic deformation leads to the formation of small and interconnected microvoids called?
Devitrification
Crazing
Crystallisation
Annealing
Correct answer
Devitrification
In which application does glycerine NOT serve as a humectant in the food industry?
To prevent the oxidation of food colour
To control ice crystal formation in frozen desserts
To retain moisture in processed meats
To maintain consistency and prevent drying in dairy products
Correct answer
To prevent the oxidation of food colour
Which of the following is an important chemical parameter to consider when assessing water potability?
Acidity
High concentration of heavy metals
Appropriate pH levels
High pH
Correct answer
Acidity
What is the typical calorific value of producer gas?
4,500 - 5,000 kcal/m3
1,000 - 1,200 kcal/m3
8,000 - 10,000 kcal/m3
2,500 - 3,000 kcal/m3
Correct answer
4,500 - 5,000 kcal/m3
Which of the following is one of the main DISADVANTAGES of using hard water in a boiler?
Improved water flow
Increased heating efficiency
Reduced maintenance costs
Scaling and limescale buildup
Correct answer
Improved water flow
What is the process by which an atomic nucleus splits into two or more smaller nuclei, releasing a large amount of energy?
Fusion
Radioactive decay
Fission
Nuclear transmutation
Correct answer
Fusion
As per the following options, what is the most suitable property of glycerol?
It is insoluble in water
It is hygroscopic
It is a solid at room temperature
It has a strong odor
Correct answer
It is insoluble in water
The EMF induced in the secondary winding of a transformer depends on the ______.
magnetic flux linkage
armature reaction
power factor
load resistance
Correct answer
magnetic flux linkage
A positron is emitted in ______.
beta-plus decay
beta-negative decay
alpha decay
gamma decay
Correct answer
beta-plus decay
Which of the following is the primary ore used for the extraction of nickel?
Pentlandite
Bauxite
Galena
Hematite
Correct answer
Pentlandite
Which of the following is an aerobic process used in secondary wastewater treatment?
Anaerobic Digestion
Upflow Anaerobic Sludge Blanket (UASB)
Activated Sludge Process
Anaerobic Filters
Correct answer
Anaerobic Digestion
The following truth table is related to which gate?
NOR gate
OR gate
NAND gate
XOR gate
Correct answer
NOR gate
Read the given statements and select which is/are correct.
A. Resistance strain gauges are very useful for measurement of tension, torque, force and stresses in structures.
B. Strain gauges are used in load cells and proving rings to measure force by the strain produced.
Both A and B
Only B
Only A
Neither A nor B
Correct answer
Both A and B
Which of the following is NOT a function of lubricant oils?
Increasing friction
Cooling through heat dissipation
Protecting against corrosion and rust
Cleansing by removal of contaminants
Correct answer
Increasing friction
Which of the following is NOT a type of polymer PTC (positive temperature coefficient) thermistor?
Monoswitch
Semifuse
Multifuse
Polyswitch
Correct answer
Monoswitch
Which of the following pairs of lime types and their characteristics is correctly matched?
Slaked Lime – Used in RCC Construction
Hydraulic Lime - Gains Strength in Air Only
Quick Lime – Highly Stable
Fat Lime - High Plasticity
Correct answer
Slaked Lime – Used in RCC Construction
Which of the following is a primary air pollutant?
Nitrogen trioxide
Ozone
Sulphur trioxide
Sulphur dioxide
Correct answer
Nitrogen trioxide
What type of cooling is typically used in outdoor distribution transformers?
Dry-type
Air natural
Oil-immersed
Forced air
Correct answer
Dry-type
A thermocouple works on the principle of ______.
Peltier effect
Raman effect
Ohm's law
Seebeck effect
Correct answer
Peltier effect
What type of network device assigns IP addresses dynamically in a LAN?
DHCP server
DNS server
Router
Switch
Correct answer
DHCP server
Which of the following is an example of point-source water pollution?
Runoff from agricultural land
Animal faeces from dogs and birds
Wastewater pipe from a factory
Pollutants from car parks
Correct answer
Runoff from agricultural land
Which of the following methods is used to prepare benzene from sodium benzoate?
Decarboxylation
Oxidation
Polymerisation
Hydrolysis
Correct answer
Decarboxylation
Which of the following is a major environmental concern associated with Blast Furnace Gas (BFG)?
Release of particulate matter
High sulphur dioxide emissions
Generation of methane
Emission of carbon dioxide
Correct answer
Release of particulate matter
In which type of gear train are the input and output shafts collinear?
Simple gear train
Reverted gear train
Epicyclic gear train
Compound gear train
Correct answer
Simple gear train
What is the most common method for producing aluminium from its ore?
Smelting
Leaching
Electrolytic reduction
Blast furnace process
Correct answer
Smelting
What is the primary method for extracting copper from sulphide ores like chalcopyrite?
Electrolytic refining
Magnetic separation
Leaching
Smelting and converting
Correct answer
Electrolytic refining
Which type of pattern is specifically designed to produce hollow castings by incorporating cores?
Segmental pattern
Shell pattern
Loose piece pattern
Cope and drag pattern
Correct answer
Segmental pattern
In a vapour compression refrigeration system, the highest temperature in the cycle occurs ______.
before the capillary tube
after compression
after the capillary tube
after evaporation
Correct answer
before the capillary tube
Select the correct statement valid only for reversible process conducted by closed system; neglect change in kinetic and potential energy.
TdS = dU + TdV
TdS = dU + WdS
dQ = dU + TdS
dQ = dU + pdV
Correct answer
TdS = dU + TdV
Piezoelectric load cells work on the same principle of ______ as in strain gauge load cell to measure force.
leaching
deformation
electromagnet
titration
Correct answer
leaching
If n12 is the refractive index of medium 1 with respect to medium 2 and n31 is the refractive index of medium 3 with respect to medium 1, then n32, the refractive index of medium 3 with respect to medium 2 will hold the relation ______.
n32 = n31 × n12
n31 = n32 x n12
n32 = n31 - n12
n12 = n32 × n31
Correct answer
n32 = n31 × n12
Which of the following is NOT a product of petroleum refining?
Asphalt
Kerosene
Natural gas
Lubricating oil
Correct answer
Asphalt
What will be the correct answer of the infix expression 20 - 5 * 2?
10
0
30
20
Correct answer
10
Which of the following is a characteristic of metallurgical coke?
Contains volatile matter
Very fragile
Strong and porous
Highly dense
Correct answer
Contains volatile matter
What is the value of critical angle for the diamond-air interface (refractive index of diamond is 2.42)?
47°
25.6°
24.4°
90°
Correct answer
47°
Which process is used to break down heavy hydrocarbons into lighter ones?
Alkylation
Reforming
Distillation
Cracking
Correct answer
Alkylation
Which of the following is a close packed plane for the HCP crystal?
(1011)
(1010)
(1101)
(0001)
Correct answer
(1011)
High silicon steel is commonly used in:
aircraft frames
automobile engines
cooking utensils
electrical transformers
Correct answer
aircraft frames
Which of the following is NOT a stage of the Addition Polymerisation process?
Propagation
Termination
Crystallisation
Initiation
Correct answer
Propagation
What is a 'carbon sink'?
A type of fossil fuel
A place where carbon is stored away from the atmosphere
A process that rapidly cycles carbon
A place where carbon is released into the atmosphere
Correct answer
A type of fossil fuel
150 questions in the full paper