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Question Bank

LPUNEST Exam For B.Tech (Maths) - English

Duration: 150 ยท Questions: 100 ยท Max Marks: 100 ยท Language: 3

View LPUNEST 2026 Exam Page

Physics

1
In ruby laser, the stimulated emission is due to transition from
  1. A.metastable state to any lower state
  2. B.any higher state of lower state
  3. C.metastable state to ground state
  4. D.any higher state to ground state
2
A direct current I flows along the length of an infinitely long straight thin walled pipe, then the magnetic field is
  1. A.uniform throughout the pipe not zero
  2. B.zero only along the axis of the pipe
  3. C.zero at any point inside the pipe
  4. D.maximum at the centre and minimum at the edge
3
convex lens made of glass has focal length 0.15m in air. If the refractive index of glass is 3/2, and that of water is 4/3 the focal length of lens when immersed in water is
  1. A.0.45 m    
  2. B.0.15 m
  3. C.0.30 m       
  4. D.0.6 m
4
Two sources are said to be coherent if they produce waves
  1. A.having a constant phase difference
  2. B.of equal wavelength
  3. C.of equal speed
  4. D.having same shape of wavefront
5
Three resistors 1 รขโ€žยฆ, 2 รขโ€žยฆ, 3รขโ€žยฆ resistor a 3 V battery is connected. The current through 3 รขโ€žยฆ resistor is -
  1. A.0.75 A     
  2. B.1 A
  3. C.2 A         
  4. D.1.5 A
6
In a common emitter amplifier the input signal is applied across
  1. A.anywhere 
  2. B.emitter-collector
  3. C.collector-base
  4. D.base-emitter
7
Adding detergents to water helps in removing dirty greasy stains. This is because
1. It increases greasy stains. This is because
2. It decreases the oil-water surface tension
3. It increases the viscosity of the solution
4. Dirt is held suspended surrounded by detergent molecules
  1. A.2 and 4
  2. B.1 only
  3. C.3 and 4
  4. D.4 only
8
Choose the correct statement (a) for a cricket ball that is spinning clockwise through air
S1 : Statemlines of air are symmetric around the ball.
S2 : The velocity of air above the ball relative to it is larger than that below the ball.
S3 : The velocity of air above the ball relative to it is smaller than that below the ball.
S4 : There is a net upward force on the ball.
  1. A.S1,S2 and S4
  2. B.S2 and S4
  3. C.S4 only
  4. D.S3 only
9
Ferromagnetic materials used in a transformer must have
  1. A.low permeability and high hysterisis loss
  2. B.high permeability and low hysterisis loss
  3. C.high permeability and high hysterisis loss
  4. D.low permeability and low hysterisis loss
10
According to Newton’s corpuscular theory, the speed of light is
  1. A.same in all the medium
  2. B.lesser in rarer medium
  3. C.lesser in denser medium
  4. D.independent of the medium
11
For the constructive interference the path difference between the two interfering waves must be equal to
  1. A.(2รฐยล“โ€น + 1)λ  
  2. B.2nรฐยล“โ€น
  3. C.nλ
  4. D.n
12
The accurate measurement of emf can be obtained using
  1. A.multimeter 
  2. B.voltmeter
  3. C.voltameter
  4. D.potentiometer
13
A person, with outstretched arms, is spinning on a rotating stool. He suddenly brings his arms down to his sides. Which the following is true about his kinetic energy K and angular momentum L?
  1. A.Both K and L increase
  2. B.Both K and L remain unchanged
  3. C.K remains constant, L increases
  4. D.K increases but L remains constant
14
Which of the following is not a thermodynamic coordinate?
  1. A.Gas constant (R)   
  2. B.Pressure (p)
  3. C.Volume (V) 
  4. D.Temperature (T)
15
An antenna uses electromagnetic waves of frequency 5 MHz . For proper working, the size of the antenna should be
  1. A.300 m
  2. B.3 km
  3. C.15 m
  4. D.15 km
16
The amount of energy released when one microgram of matter is annihilated is
  1. A.25 kWh  
  2. B.9 x 1010 kWh
  3. C.3 x 1010 kWh
  4. D.0.5 x 105 kWh
17
The number of significant figures in the numbers 4.8000 x 104 48000.50 are respectively
  1. A.5 and 6
  2. B.5 and 7
  3. C.2 and 7
  4. D.2 and 6
18
β-decay means emission of electron from
  1. A.innermost electron orbit
  2. B.a stable nucleus
  3. C.outermost electron orbit
  4. D.radioactive nucleus
19
An electric heater rated 220 V and 550 W is connected to AC mains. The current drawn by it is
  1. A.0.8 A          
  2. B.2.5 A
  3. C.0.4 A        
  4. D.1.25 A
20
A string is wound round the rim of a mounted flywheel of mass 20 kg and radius 20 cm. A steady pull of 25 N is applied on the cord. Neglecting friction and mass of the string, the angular acceleration of the wheel is
  1. A.50 s-2
  2. B.25 s-2
  3. C.12.5 s-2
  4. D.6.25 s-2
21
A billiards player hits a stationary ball by an identical ball to pocker the target ball in a corner pocket that is at an angle of 35o with respect to the direction of motion of the first ball. Assuming the collision as elastic and that frictional and rotational motions are not important, the angle made by the target ball with respect to the imcoming ball is
  1. A.35o
  2. B.50o
  3. C.55o
  4. D.60o
22
A body of mass 0.05 kg is observed to fall with an acceleration of 9.5 ms-2. The opposing force of air on the body is (g = 9.8 ms-2)
  1. A.0.015 N
  2. B.0.15 N
  3. C.0.030 N
  4. D.zero
23
The colloidal solution in which both the dispersed phase and dispersion medium are liquids are called
  1. A.emulsions
  2. B.gels
  3. C.foams 
  4. D.liquid crystals
24
In fog, photographs of the objects taken with infrared radiations are more clear than those obtained during visible light because
  1. A.I-R radiation has lesser wavelength than visible radiation
  2. B.scattering of I-R light is more the object is less
  3. C.the intensity of I-R light is more the object is less
  4. D.scattering of I–R light is less than visible light
25
Three concurrent co-planar forces 1 N, 2 N and 3 N acting along different directions on a body
  1. A.can keep the body in equilibrium if 1 N and 3 N act at right angle
  2. B.can keep the body in equilibrium if 1 N and 2 N act at right angle
  3. C.cannot keep the body in equilibrium
  4. D.can keep the body in equilibrium in 1 N and 3 N act at an acute angle

Chemistry

1
10-6 M NaOH is diluted 100 times. The pH of the diluted base is
  1. A.between 7 and 8
  2. B.between 5 and 6
  3. C.between 6 and 7
  4. D.between 10 and 11
2
In the electrolysis of acidulated water, it is desired to obtain 1.12 cc of hydrogen per second under STP condition. The current to be passed is
  1. A.1.93 A         
  2. B.9.65 A
  3. C.19.3 A        
  4. D.0.965 A
3
The one which decreases with dilution is
  1. A.molar conductance
  2. B.conductance
  3. C.specific conductance
  4. D.equivalent conductance
4
Vapour pressure of pure ‘A’ is 70 mm of Hg at 25oC. It forms an ideal solution with ‘B’ in which mole fraction of A is 0.8. if the vapour pressure of the solution is 84 mm of Hg at 25oC, the vapour pressure of pure ‘B’ at 25oC is
  1. A.28 mm   
  2. B.56 mm
  3. C.70 mm    
  4. D.140 mm
5
A 6% solution of urea is isotonic with
  1. A.1 M solution of glucose
  2. B.0.05 M solution of glucose
  3. C.6% solution of glucose
  4. D.25% solution of glucose
6
In countries nearer to polar region, the roads are sprinkled with CaCl2. This is
  1. A.to minimise the wear and tear of the roads
  2. B.to minimise the snow fall
  3. C.to minimise pollution
  4. D.to minimise the accumulation of dust on the road
7
A compound of ‘A’ and ‘B’ crystallises in a cubic lattice in which ‘A’ atoms occupy the lattice points at the corners of the cube. The ‘B’ atoms occupy the centre of each face of the cube. The probable empirical formula of the compound is
  1. A.AB2 
  2. B.A2B
  3. C.AB
  4. D.AB3
8
In electrophilic aromatic substitution reaction, the nitro group is meta directing because it
  1. A.decreases electron density at ortho and para positions
  2. B.decreases electron density at meta position
  3. C.increases electron  density at meta position
  4. D.increases electron density at ortho and para position
9
The best method for the conversion of an alcohol into an alkyl chloride is by treating the alcohol with
  1. A.PCI5
  2. B.PCI3
  3. C.SOCl2 in presence of pyridine
  4. D.dry HCl in the presence of anhydrous ZnCl2
10
The carbon bond length in benzene is
  1. A.in between C2H6 and C2H4
  2. B.same as in C2H4
  3. C.in between C2H6 and C2H2
  4. D.in between C2H4 and C2H2
11
The compound which is not formed during the dry distillation of a mixture of calcium formate and calcium acetate is
  1. A.methanal
  2. B.propanal
  3. C.propanone
  4. D.ethanal
12
An organic compound x is oxidised by using acidified K2Cr2O7. The product obtained reacts with phenyl hydrazine but does not answer silver mirror test. The possible structured of X is
  1. A.CH3CH2OH
  2. B.CH3 – C – CH3
  3. C.(CH3)2CHOH 
  4. D.CH3CHO
13
Arrange the following in the increasing of their. Basic strengths CH3NH2, (CH3)2NH, (CH3)2N, NH3
  1. A.NH3, < (CH3)3N < (CH3)2NH < CH3NH2
  2. B.NH3 < (CH3)3N < CH3NH2 < (CH3)2NH
  3. C.(CH3)3N < NH3 < CH3NH2 < (CH3)2NH
  4. D.CH3NH2 < (CH3)2NH < (CH3)3N , NH3
14
The one which has least iodine value is
  1. A.sunflower oil 
  2. B.ginger oil
  3. C.ghee
  4. D.groundnut oil
15
A diabetic person carries a packet of glucose with him always, because
  1. A.glucose reduces the blood sugar level slowly
  2. B.glucose increases the blood sugar level slowly
  3. C.glucose reduces the blood sugar level
  4. D.glucose increases the blood sugar level almost instantaneously
16
There are 20 naturally occurring among acids. The maximum number of tripeptides than can be obtained is
  1. A.8000 
  2. B.6470
  3. C.7465
  4. D.5360
17
At what temperature ill the RMS velocity of SO2 be the same as that of O2 at 303 K ?
  1. A.403 K
  2. B.303 K
  3. C.606 K
  4. D.273 K
18
Phenol is treated with bromine water and shaken well. The white precipitate formed during the process is
  1. A.m–bromophenol
  2. B.2, 4, 6 tribromophenol
  3. C.2-4 dibromophenol
  4. D.A mixture of o-and p-bromophenols
19
In thermite process the metal used as reducing agent is:
  1. A.Nickel
  2. B.Zinc
  3. C.Sodium
  4. D.Aluminium
20
Which of the following compounds on boiling with alkaline KMnO4 and subsequent acidification will not give benzoic acid?
  1. A.Benzyl alcohol
  2. B.Acetophenone
  3. C.Anisole
  4. D.Toluene
21
The base present in DNA, but not in RNA is:
  1. A.Guanine
  2. B.Adenine
  3. C.Uracil
  4. D.Thymine
22
The total number of lattice arrangements in different crystal system is:
  1. A.7
  2. B.3
  3. C.8
  4. D.14
23
Alcoholic potash is used to bring about :
  1. A.Dehydrogenation
  2. B.Dehydration
  3. C.Dehydrohalogenation
  4. D.Dehalogenation
24
Which of the following is the correct statement?
  1. A.Order of a reaction has always an integral value
  2. B.Mechanism of a reaction proposed is always final
  3. C.Zero order reactions are multi-step reactions
  4. D.Order of reaction can be predicted even without knowing the rate law
25
The unit of quantity of electricity is:
  1. A.Ohm
  2. B.Ampere
  3. C.Coulomb
  4. D.Volt

Maths

1
The elements of the set {x : x is an integer, x2 : 4} can be represent as .....Z..... . Here, Z refers to
  1. A.{–2, 2} 
  2. B.{–1, 0, 1}
  3. C.{–2, –1, 0, 1, 2}
  4. D.{0, 1, 2}
2
  1. D.None of these
3
If Y = {x : x is a positive factor of the number 2p – 1(2p – 1), where 2p – 1 is a prime number}, then Y can be represent in roster form as
  1. A.{2}
  2. B.{1, 2}  
  3. C.{1, 2, 22, ....., 2p – 1}
  4. D.{1, 2, 22, 23,.... 2p – 1, (2p – 1)}
4
The set {x : x is a positive integer less than 6 and 3x – 1 is an even number} in roster form is
  1. A.{1, 2, 3, 4, 5}
  2. B.{1, 2, 3, 4, 5, 6}  
  3. C.{2, 4, 6}
  4. D.{1, 3, 5}
5
If A B and A B, then
  1. A.A is called a proper subset of B
  2. B.A is called a super set of B
  3. C.A is not a subset of B 
  4. D.B is a subset of A
6
The number of non-empty subsets of the set{1, 2, 3, 4} is
  1. A.15
  2. B.14
  3. C.16
  4. D.17
7
The number of elements of the power set of a set containing m elements is
  1. A.2m – 1
  2. B.m 
  3. C.m2
  4. D.2m
8
If A = {x : x = n2, n = 1, 2, 3}, then number of proper subsets is
  1. A.3
  2. B.8
  3. C.7
  4. D.None of these
9
If A = {x : x = 4n + 1, 2 £ n £ 5},then number of subsets of A is
  1. A.16
  2. B.15  
  3. C.4 
  4. D.None of these 
10
Let A and B be two non-empty subsets of a set X such that A is not a subset of B, then
  1. A.A is always a subset of the complement of B
  2. B.B is always a subset of A  
  3. C.A and B are always disjoint
  4. D.A and the complement of B are always non-disjoint  
11
Which of the following is/are empty set? 
A = {x : x2 + x + 1 = 0 and x Î Z}   B = {x : x is a prime number and 19 < x < 23}
  1. A.A
  2. B.B  
  3. C.Both A and B
  4. D.None of the above 
12
The set {x : x4 = 1 and x R} is .....X.... set. Here, X refers to
  1. A.empty
  2. B.finite
  3. C.infinite
  4. D.singleton 
13
The universal set for the sets   
A = {x : x2 – 5x + 6 = 0} and   
B = {x : x2 – 3x + 2 = 0} having least number of elements is
  1. A.{1, 2}
  2. B.{1, 3}
  3. C.{1, 2, 3}
  4. D.{0, 1, 2, 3}
14
If A = {1, 2, 3}, B = {x € R : x2 – 2x + 1 = 0}, 
C = {1, 2, 2, 3} and 
D = {x € R : x3 – 6x2 + 11x – 6 = 0}, then the equal sets are
  1. A.A and B
  2. B.A and C  
  3. C.A, B and C 
  4. D.A, C and D
15
If A = (–3, 5) and  B = [–7, 9], then
  1. A.A = B
  2. B.A B 
  3. C.B A
  4. D.None of these 
16
Two finite sets have m and n elements, respectively. The total number of subsets of first set is 56 more than the total number of subsets of the second set. The value of m and n respectively are
  1. A.7, 6
  2. B.5, 1
  3. C.6, 3
  4. D.8, 7
17
Combine terms: 12a + 26b  - 4b – 16a .
  1. A.4a + 22b
  2. B.-28a + 30b
  3. C.-4a + 22b
  4. D.28a + 30b
18
The average of first 50 natural numbers is ………… .
  1. A.25.30
  2. B.25.5
  3. C.25.00
  4. D.12.25
19
60 Times of 8 Equals to
  1. A.480
  2. B.300
  3. C.250
  4. D.400
20
Consider the sets
A = {x : x is a real number and x2 + 1 = 0}
B = {x : x is a real number and x2 – 16 = 0}
C = {x : x is a real number and x2 = x + 2}
Which of the following is are null set ?
  1. A.A
  2. B.A and B
  3. C.A and C
  4. D.A, B and C
21
If X = {4n – 3n – 1: n Î N} and Y = {9(n – 1): n Î N}; where N is the set of natural numbers, then X È Y is equal to
  1. A.N
  2. B.Y – X
  3. C.X
  4. D.Y
22
Which of the following is / are correct?
I. {2, 3, 4} {1, 2, 3, 4, 5}
II. {a, b, c} {b, c, d}
III. {x : x is an equilateral triangle in a plane} Ì {x : x is a triangle in the same plane}
IV. {x : x is an even natural number} {x : x is an integer}
  1. A.I and III are correct
  2. B.II and III are correct  
  3. C.Only IV is correct 
  4. D.All above are correct 
23
    24
    Consider the following statements :
    1. The set of all irrational numbers between √2 and √5 is an infinite set .
    2. The set of all odd integers less than 100 is a finite set .
    Which of the statements given above is/are correct ?
    1. A.1 only
    2. B.2 only
    3. C.Both 1 and 2
    4. D.Neither 1 nor 2
    25
    What is the Next Prime Number after 7 ?
    1. A.13
    2. B.12
    3. C.14
    4. D.11

    English

    1
    I go to Madurai by —– Vaigai Express
    1. A.a
    2. B.an
    3. C.some
    4. D.the
    2
    Have the car stolen!
    1. A.Steal the car
    2. B.You should have the stolen car
    3. C.Get someone to steal the car
    4. D.They have stolen the car
    3
    The payment was collected by the hardworking salesman.
    1. A.The hardworking salesman collected the payment.
    2. B.the salesman who worked heard was able to collect the payment.
    3. C.to collect the payment the salesman had to work hard.
    4. D.The hardworking salesman was able to collect the payment.
    4
    I had to stop all my work to complete this project.
    1. A.All other work had to be stopped to complete this project by me
    2. B.For completing this project all other work must be stopped
    3. C.For completing this project I had to stop all my work
    4. D.To complete this project all other work had been stopped by me
    5
    They have published the names of all the successful candidates.
    1. A.The candidates who have succeeded their names they had published.
    2. B.The names of all the successful candidates have been published by them
    3. C.The candidates who have succeeded their names have been published by them.
    4. D.The names of all the successful candidate were published by them. 
    6
    The online shopping site lowered the prices.
    1. A.Lowering of the prices was done by the online shopping site
    2. B.The prices were lowered by the online shopping site
    3. C.The prices had been lowered by the online shopping site
    4. D.The prices have been lowered by the online shopping site
    7
    Who taught you to drive a truck ?
    1. A.To drive a truck by whom were you taught?
    2. B.Driving a truck by who were you taught?
    3. C.Driving a truck by who were you being taught?
    4. D.By whom were you taught to drive a truck?
    8
    We shall invite Suresh.
    1. A.Suresh would be invited by us
    2. B.Suresh would have been invited by us
    3. C.Suresh will be invited by us
    4. D.Suresh will have been invited by us
    9
    Dark clouds have overcast the evening sky.
    1. A.By the dark clouds the evening sky was overcast.
    2. B.The evening sky has been overcast by the dark clouds.
    3. C.Dark clouds overcastted the evening sky.
    4. D.The sky of the evening was overcasted by dark clouds.
    10
    The partners will celebrate their triumph tomorrow. 
    1. A.The triumph would be celebrated by the partners a day before
    2. B.The triumph would be celebrated by the partners a day after
    3. C.The triumph would have been celebrated by the partners a day after
    4. D.The triumph will have been celebrated by the partners tomorrow
    11
    Why did break the vase?
    1. A.why is the vase broken by him
    2. B.why was the vase broken by him
    3. C.why had been the vase broken by him
    4. D.why has been the vase broken by him
    12
    Mariam was writing a note to her boss.
    1. A.A note was written to her boss by Mariam
    2. B.A note was wrote by Mariam to her boss
    3. C.A note was being written by Mariam to her boss
    4. D.A note was written by Mariam to her boss
    13
    The baby really enjoys that music.
    1. A.That music was really enjoyed by the baby.
    2. B.That music was really being enjoyed by the baby.
    3. C.That music is really enjoyed by the baby.
    4. D.This music was really enjoyed by the baby.
    14
    The weather disrupted the final match.
    1. A.The final match has been disrupted by the weather.
    2. B.The final match had been disrupted by the weather.
    3. C.The final match was disrupted by the weather. 
    4. D.The final match was being disrupted by the weather.
    15
    The management committee is required to publish a report every year. 
    1. A.report would be published by the management committee every year.
    2. B.A report would have been published by the management committee every year.
    3. C.A report requires to be published by the management committee every year.
    4. D.Every year the report would be published by the management committee.
    16
    Preeti ran the race in record time.
    1. A.In record time Preeti ran the race.
    2. B. The race was run by Preeti in record time
    3. C.The race was being run by Preeti in record time
    4. D.The race had been run by Preeti in record time
    17
    I shall have written the full thesis by December
    1. A.By December I shall have wrote the full thesis.
    2. B.The full thesis will have been written by me by December.
    3. C.The full Thesis will be wrote by me by December
    4. D.By December the full thesis must have been wrote by me.
    18
    One must keep one’s promises.
    1. A.One’s promises must be kept by one.
    2. B.One’s promises had to be kept.
    3. C.Promises must be kept.
    4. D.Promises have to be kept by one.
    19
    I read the story in one night.
    1. A.The story had been read by me in one night.
    2. B.The story has been read by me in one night
    3. C.n one night the story has been read by me.
    4. D.the story was read by me in one night
    20
    We must take care of the old.
    1. A.Those who are old need to be taken care of by us.
    2. B.The old must be taken care of by us. 
    3. C.Those who are old need care by us
    4. D.The old should be taken care of by us.
    21
    My father generously donated money to the church.
    1. A.Money is generously being donated to te church by my father.
    2. B.Money has been generously donated to the church by my father.
    3. C.Money had been generously donated to the church by my father.
    4. D.Money was generously donated to the church by my father.
    22
    We will send you your laboratory reports as soon as they are ready
    1. A.you would be sent your laboratory reports as soon as they will be ready.
    2. B.Your laboratory reports will be sent to you as soon as they are ready.
    3. C.You would be send your laboratory reports as soon as they will be ready.
    4. D.Your laboratory reports should be sent to you as soon as they will be ready.
    23
    I saw the master conducting the orchestra.
    1. A.I saw that the orchestra was being conducted by the master.
    2. B.I saw the orchestra being conducted by te master
    3. C.The master was seen conducting the orchestra by me.
    4. D.The master was conducting the orchestra and I saw that.
    24
    The dog is being fed by us.
    1. A.We fed the dog.
    2. B.We have had been feeding the dog.
    3. C.We are feeding the dog 
    4. D.We had been feeding the dog
    25
    When did Rohit return my bike?
    1. A.When was my bike returned by Rohit?
    2. B.When was it that Rohit returned my bike?
    3. C.Rohit returned my bike when?
    4. D.When did my bike come back from Rohit?