An isochoric process is defined as one taking place at constant volume. Because volume does not change there is no PV work done, which distinguishes it from isobaric or isothermal processes.
2Physicsfirst law energy change
If 42 J heat is transferred to the system during expansion, what is the change in internal energy when work done is 32 J?
A.74 J
B.10 J✓
C.116 J
D.106 J
Explanation
Use the first law ΔU = Q − W. With Q = 42 J supplied and W = 32 J done by the system, ΔU = 42 − 32 = 10 J.
3Physicsfirst law principle
The 1st law of thermodynamics is the generalization of the law of conservation of:
A.Mass
B.Charge
C.Energy✓
D.Momentum
Explanation
The first law of thermodynamics is simply the statement of conservation of energy applied to thermodynamic systems, relating heat and work to change in internal energy.
4Physicsrc time constant
While studying charging and discharging of a capacitor, Rc = Resistance × Capacitance is known as:
A.Electrostatic constant
B.Time constant✓
C.Dielectric constant
D.Proportionality constant
Explanation
For an RC circuit the product τ = R·C is the time constant which sets the exponential charging or discharging timescale of the capacitor. It is therefore called the time constant.
5Physicsparallel capacitors
In parallel combination of two capacitors, their equivalent capacitance is equal to:
A.C1 + C2✓
B.1/C1 + 1/C2
C.C1C2 / C1 + C2
D.2C1C2 / C1 + C2
Explanation
In a parallel connection the potential difference across each capacitor is the same, so their charges add and the equivalent capacitance is C_eq = C1 + C2.
6Physicsunit of capacitance
The S.I unit of capacitance of a capacitor is:
A.Coulomb
B.Volt
C.Farad✓
D.Ampere
Explanation
Capacitance is measured in farads (F), defined as coulomb per volt. Thus the SI unit of capacitance is the farad.
143 more questions in this paper
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If length of the wire becomes two times to its original value and area becomes one half to its original value, then resistance of the wire becomes:
A.Double
B.Four times
C.One half
D.One forth
Answer and explanation locked
10Physicsmotion in magnetic field parallel entry
When a charged particle enters the magnetic field parallel, it will:
A.Deflect toward north
B.Deflect toward south
C.Move straight
D.Move in circular path
Answer and explanation locked
11Physicsmagnetic field dimensions
The dimension of magnetic field strength is same as that of:
A.Magnetic flux
B.Magnetic induction
C.Work done
D.Magnetic force
Answer and explanation locked
12Physicsweber unit
The weber is unit of measure of:
A.Conductance
B.Electric current
C.Magnetic flux
D.Electric flux
Answer and explanation locked
13Physicslenzs law conservation
The Lenz's law is also statement of law of conservation of:
A.Charge
B.Mass
C.Energy
D.Pressure
Answer and explanation locked
14Physicsfleming right hand rule
In Fleming's right hand rule, the second finger indicates:
A.Force
B.Magnetic field
C.Induced current
D.Motion
Answer and explanation locked
15Physicsgenerator energy conversion
A current generator is a device that converts:
A.Mechanical energy into electrical energy
B.Chemical energy into mechanical energy
C.Sound energy into mechanical energy
D.Electrical energy into mechanical energy
Answer and explanation locked
16Physicsdiode rectifier
A device that converts AC into DC is called:
A.Diode
B.Transistor
C.Capacitor
D.Inductor
Answer and explanation locked
17Physicsrectification definition
The conversion of alternating current into direct current is called:
A.Amplification
B.Rectification
C.Magnification
D.Resolution
Answer and explanation locked
18Physicsfull wave bridge rectifier
In full wave rectification, ________ diodes are used.
A.1
B.2
C.3
D.4
Answer and explanation locked
19Physicshalf life definition
The time taken for half the number of atoms of radioactive isotopes to disintegrate is called:
A.Average life
B.Mean life
C.Total life
D.Half life
Answer and explanation locked
20Physicshalf life calculation
A 32g radioactive element decays and remains 2g after 60 days. What is half-life of this radioactive element?
A.2 days
B.6 days
C.10 days
D.15 days
Answer and explanation locked
21Physicsacceleration direction signs
If the car is slowing down along negative x axis then acceleration will be along:
A.Positive x Axis
B.Negative x Axis
C.Positive y Axis
D.Negative y Axis
Answer and explanation locked
22Physicsinstantaneous velocity direction
The instantaneous velocity along the curved path is:
A.Along the tangent
B.Perpendicular to the slope
C.Parallel to the radius
D.Anti-parallel to the radius
Answer and explanation locked
23Physicselastic collision conservation laws
In perfectly elastic collision:
A.Only momentum is conserved
B.Only total energy is conserved
C.Only kinetic energy is conserved
D.Momentum, kinetic energy and total energy, all are conserved
Answer and explanation locked
24Physicsdisplacement time slope
The slope of a displacement-time graph is equal to:
A.Velocity
B.Displacement
C.Acceleration
D.Distance
Answer and explanation locked
25Physicsprojectile range complementary angles
Range of a projectile on a horizontal plane is same for the following pair of angle:
A.15 & 30
B.60 & 20
C.75 & 15
D.50 & 25
Answer and explanation locked
26Physicsimpulse and momentum
The product of force and time is equal to:
A.Angular momentum
B.Force
C.Change in momentum
D.Velocity
Answer and explanation locked
27Physicsprojectile vertical velocity
At what point during the motion of projectile its vertical component of velocity is zero?
A.Point of projection
B.Landing point
C.Highest point
D.Just before landing
Answer and explanation locked
28Physicspotential energy and work
A projectile has 1 J of PE. What is the work done in terms of height?
A.1 J
B.10 J
C.0 J
D.0.1 J
Answer and explanation locked
29Physicspower definition
Power is dot product of:
A.Force and displacement
B.Force and velocity
C.Force and time
D.Work and time
Answer and explanation locked
30Physicswork from force displacement graph
The area under force-displacement graph gives:
A.Displacement
B.Power
C.Work
D.Acceleration
Answer and explanation locked
31Physicskinetic energy velocity dependence
A body of mass 'm' is moving with velocity 'v'. After a short interval of time its velocity becomes double. How many times its K.E will increase or decrease?
A.2 time increased
B.2 time decreased
C.4 time increased
D.4 time decreased
Answer and explanation locked
32Physicsradian degree conversion
The relation between radian and degree is:
A.1 rad = 57.3°
B.1° = 57.3 rad
C.1 rad = 1°
D.1° = π rad
Answer and explanation locked
33Physicscentripetal acceleration
In case of centripetal force the value of instantaneous acceleration is given by:
A.ac = v/r
B.ac = v2/r
C.ac = vr
D.ac = v2r
Answer and explanation locked
34Physicsrpm to rad per second
An electric motor turns at 400 revolutions per minute. Its angular velocity in rad/s will be:
A.20π/3
B.30π/3
C.40π/3
D.30π/4
Answer and explanation locked
35Physicsrolling motion moments of inertia
A disc, a hoop and a sphere are rolling down from an inclined plane simultaneously. Which object will reach at the bottom first?
A.Hoop
B.Disc
C.Sphere
D.All at the same time
Answer and explanation locked
36Physicscentripetal force omega
The centripetal force formula is:
A.Fc = mω2
B.Fc = mrω
C.Fc = mrω2
D.Fc = mr2ω
Answer and explanation locked
37Physicsspeed of sound pressure dependence
With increase in pressure, the speed of sound will:
A.Increase
B.Decrease
C.First increase then decrease
D.Remain the same
Answer and explanation locked
38Physicswave terminology
In transverse waves, the portion above the mean level is called:
A.Wave front
B.Wave crest
C.Wave trough
D.Wave length
Answer and explanation locked
39Physicsamplitude definition
The maximum displacement of particles of a medium, on either side of the mean position of a wave, is called:
A.Wavelength
B.Frequency
C.Amplitude
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Answer and explanation locked
40Biologysodium gradient
Na+ (sodium ions) are nearly ________ times greater in fluid outside the cell than inside:
A.10
B.30
C.2
D.3
Answer and explanation locked
41Biologyoxytocin and labour
Which hormone induces labour pains?
A.Estrogen
B.Oxytocin
C.Progesterone
D.LH
Answer and explanation locked
42Biologyadh and osmoregulation
Hormone secreted in bulk due to decreased water content of blood is:
A.Anti-Diuretic Hormone (ADH)
B.Oxytocin
C.Glucagon
D.Thyroxin
Answer and explanation locked
43Biologyneurotransmitter synthesis location
The site of production of neurotransmitters is:
A.Postsynaptic neuron
B.Presynaptic neuron
C.Synaptic cleft
D.Dendrite
Answer and explanation locked
44Biologyendorphin production
Endorphins are produced in:
A.Brain
B.Adrenal gland
C.Stomach
D.Thymus
Answer and explanation locked
45Biologytestosterone functions
The hormone responsible for production of sperm cells and male secondary sexual characteristics is:
A.Estrogen
B.Progesterone
C.Testosterone
D.Thyroxin
Answer and explanation locked
46Biologyleydig cell function
Leydig cells are responsible for:
A.Testosterone production
B.FSH production
C.Sperm production
D.Testosterone inhibition
Answer and explanation locked
47Biologyfsh stimulation of estrogen
The estrogen hormone secretion during the oogenesis is stimulated by:
A.Leutinizing Hormone
B.Inhibin Hormone
C.Follicle Stimulating Hormone
D.Testosterone Hormone
Answer and explanation locked
48Biologypituitary regulation of menstrual cycle
Which of the following hormones of the pituitary gland regulate the menstrual cycle?
A.Follicle Stimulating Hormone and estrogen
B.Luteinizing hormone and estrogen
C.Follicle Stimulating Hormone and Luteinizing hormone
D.Estrogen and progesterone
Answer and explanation locked
49Biologyy linked inheritance
Which of the following traits is transmitted directly from an affected father to only his son?
A.Autosomal
B.X-linked
C.Y-linked
D.X-Y linked
Answer and explanation locked
50Biologyhomozygous definition
When both the alleles of a gene pair are same, the organism is said to be:
A.Heterozygous
B.Genotype
C.Homozygous
D.Phenotype
Answer and explanation locked
51Biologyendosymbiotic theory
This theory says that 'mitochondria and chloroplasts are, in effect, ancient bacteria which now live inside the larger cells'?
A.Darwin's theory of evolution
B.Lamarckism
C.Neo-darwinism
D.Endosymbiotic theory
Answer and explanation locked
52Biologyanalogous organs
The organs which are similar in function but differ in structure are called:
A.Analogous organs
B.Homologous organs
C.Convergent organs
D.Divergent organs
Answer and explanation locked
53Biologyantibody effector mechanisms
Which may NOT be a mode of action of an antibody?
A.Neutralizing an antigen
B.Precipitating an antigen
C.Secretion of cytokines
D.Enhancing phagocytosis
Answer and explanation locked
54Biologypepsinogen activation
Pepsinogen is converted into its active form pepsin by:
A.Proteolytic enzyme action
B.Dissolving in mucus
C.Hormonal action
D.Hydrochloric acid
Answer and explanation locked
55Biologyintrinsic factor secretion
Intrinsic factor is secreted by:
A.Pancreas
B.Liver
C.Stomach
D.Duodenum
Answer and explanation locked
56Biologylymphocytes role
The cells which play very important role in developing immunity are:
A.Monocytes
B.Neutrophils
C.Lymphocytes
D.Thrombocytes
Answer and explanation locked
57Biologycarbohydrate digestion oral
Digestion of which food component starts from oral cavity?
A.Proteins
B.Fats
C.Carbohydrates
D.Vitamins
Answer and explanation locked
58Biologyvaccination artificial active immunity
Vaccination is an example of:
A.Natural passive immunity
B.Natural active immunity
C.Acquired/Artificial active immunity
D.Acquired/Artificial passive immunity
Answer and explanation locked
59Biologyaorta origin
The heart chamber from where aorta originates:
A.Left ventricle
B.Right ventricle
C.Left atrium
D.Right atrium
Answer and explanation locked
60Biologycartilaginous joints
Pubic symphysis and inter vertebral disc are the example of:
A.Fibrous joints
B.Synovial joints
C.Cartilaginous joints
D.Gliding joints
Answer and explanation locked
61Biologycartilage vascularity
Cartilage is more difficult to heal than bone because cartilage:
A.Lacks vascular supply
B.Lacks mineral deposits in matrix
C.Has less number of cells deep down
D.Lacks protein in matrix
Answer and explanation locked
62Biologycardiac muscle nuclei
Which feature is absent from cardiac muscles?
A.Intercalated disc
B.Multinucleate cells
C.Light and dark bands
D.Contractile sarcomeres
Answer and explanation locked
63Biologysarcoplasmic reticulum calcium storage
Sarcoplasmic reticulum of muscle fibers is mainly responsible for:
A.Calcium storage
B.Protein synthesis
C.Lipid metabolism
D.Storing cell wastes
Answer and explanation locked
64Biologysynapse definition
The junction between two neurons is:
A.Impulse
B.Synapse
C.Axon
D.Cleft
Answer and explanation locked
65Biologysteroid hormone example
Which hormone is chemically a steroid?
A.ADH
B.Thyroxin
C.Cortisone
D.Insulin
Answer and explanation locked
66Biologyhypoparathyroidism hypocalcemia
Under activity of parathyroid glands causes a drop in blood of:
A.Mg2+
B.Na+
C.K+
D.Ca2+
Answer and explanation locked
67Biologycollagen matrix bone cartilage
Which of the following protein establishes the matrix of bone and cartilage?
A.Elastin
B.Keratin
C.Collagen
D.Histone
Answer and explanation locked
68Biologynon competitive inhibition allosteric
Non-competitive inhibitors react with enzymes at:
A.Allosteric site
B.Active site
C.Passive site
D.Regulatory site
Answer and explanation locked
69Biologyenzyme optimal temperature human
Most enzymes work the best at the following temperature:
A.30°C
B.40°C
C.50°C
D.20°C
Answer and explanation locked
70Biologyenzyme denaturation temperature
In term of enzyme action, 'maximum temperature' refers to a temperature at which:
A.Enzymes start to denature
B.Enzymes start to re-nature
C.Enzymes work best
D.Enzymes are reactivated
Answer and explanation locked
71Biologycompetitive inhibition
_______ reduce the enzymes productivity by blocking the substrate from entering into the active site due to similar shapes:
A.Competitive inhibitors
B.Non-competitive inhibitors
C.Co-enzymes
D.Activators
Answer and explanation locked
72Biologyphotosystem i p700 oxidation
When light falls on P-700, which event is likely to occur?
A.It induces photolysis
B.Gains Hydrogen
C.Accept electrons
D.It is oxidised
Answer and explanation locked
73Biologylight reaction products for calvin cycle
Which of the following molecules are released after completion of light reaction and then utilized in the dark reaction of photosynthesis?
A.ATP and NADP+
B.ADP and NADP+
C.ADP and NADPM
D.ATP and NADPH
Answer and explanation locked
74Biologylight reaction endproducts
Which are the end products of light reactions of photosynthesis?
A.ATP and NADPH
B.ATP and glucose
C.Glucose and NADP
D.ATP and water
Answer and explanation locked
75Biologyatp synthesis thylakoid
Synthesis of ATP during photosynthesis takes place at the region:
A.Stroma
B.Thylakoid
C.Matrix
D.Cisternae
Answer and explanation locked
76Biologyvirion definition
The complete, mature and infectious virus particle is known as:
A.Venome
B.Genome
C.Virion
D.Capsid
Answer and explanation locked
77Biologyvirus obligate parasites
All viruses are:
A.Autotrophs
B.Heterotrophs
C.Parasites
D.Predators
Answer and explanation locked
78Biologycapsule virulence
_______ increases the pathogenecity of bacteria:
A.Capsule
B.Cell wall
C.Slime
D.Cell membrane
Answer and explanation locked
79Biologymycoplasma smallest bacteria
The smallest known bacteria belong to the genus:
A.Mycoplasma
B.Streptococcus
C.Escherichia
D.Bacillus GET YOUR COPY DELIVERED — ORDER FORM NUMS Past Papers Book — Free Home Delivery Across Pakistan mbbs.com.pk/product/nums-book/ FASTEST WAY: mbbs.com.pk/product/nums-book/ — Order online in 60 seconds Full Name Write your complete name as on CNIC City / District Your city for courier delivery Home Address Street, House No., Area — for delivery Mobile Number Active number — courier will call Book Name NUMS Past Papers Book NUMS Past Papers Book (Pre-filled) Payment Cash on Delivery — pay when you receive Free Home Delivery Delivery in 3–5 Days Cash on Delivery 316 4047600 This resource is brought to you by mdcatguide.com — Pakistan's most trusted MDCAT preparation platform. Download all NUMS past papers (year-wise & subject-wise) FREE at mdcatguide.com/nums-past-papers-html/
Answer and explanation locked
80Biologymesenteric venous drainage
Mesenteric veins drain the blood from:
A.Liver
B.Large intestine
C.Stomach
D.Gall bladder
Answer and explanation locked
81Biologysecondary cell wall location
Secondary cell wall in plants is present:
A.Outer to primary cell wall
B.In between two primary cell walls
C.Between the primary cell wall and plasma membrane
D.Inner to plasma membrane
Answer and explanation locked
82Biologypeptidoglycan prokaryotes
What distinguishes Prokaryotic cell wall from Fungal cell wall?
A.Prokaryotic cell wall contains cellulose
B.Prokaryotic cell wall contains peptidoglycan
C.Prokaryotic cell wall contains cutin
D.Prokaryotic cell wall contains silica
Answer and explanation locked
83Biologychromoplast function
Pollination is facilitated by:
A.Chloroplast
B.Chromoplast
C.Leucoplast
D.Amyloplast
Answer and explanation locked
84Biologytonoplast definition
Tonoplast is the membrane separating:
A.Vacuole and Nucleoplasm
B.Cytoplasm and Nucleoplasm
C.Vacuole and Stroma
D.Vacuole and Cytoplasm
Answer and explanation locked
85Biologycentriole microtubule arrangement
Each centriole is composed of ________ of Microtubules:
A.Seven Triplets
B.Eleven Triplets
C.Nine Triplets
D.Five Triplets
Answer and explanation locked
86Biologymitochondrial cristae
The folds of Inner Membrane of mitochondria are called:
A.Cisternae
B.Cristae
C.Mesosome
D.Infolds
Answer and explanation locked
87Biologymembrane hydrophobic core
According to the fluid mosaic model of cell membrane, which zone is embedded inside?
A.Hydrophobic
B.Hydrophilic
C.Globular
D.Filamentous
Answer and explanation locked
88Biologyser functions
Select the one which is NOT a function of Smooth Endoplasmic Reticulum (SER)?
A.Metabolism of lipids
B.Transmission of impulses
C.Transport of materials
D.Processing of glycoproteins
Answer and explanation locked
89Biologymembrane channels
Cell membrane also contains _______ place by active and passive transport:
A.Lipids
B.Corner Proteins
C.Charged pores
D.Carbohydrates
Answer and explanation locked
90Biologylysosome function
_______ are spherical sacs, surrounded by a single membrane and contain hydrolytic enzymes:
A.Mitochondria
B.Golgi Bodies
C.Lysosomes
D.Chloroplast
Answer and explanation locked
91Biologyproteins abundance
Most abundant organic compound in mammalian cells are:
A.Water
B.Lipids
C.Carbohydrates
D.Proteins
Answer and explanation locked
92Biologywater heat capacity
Thermal stability of organisms in the environment is because of which characteristic of water?
A.Solvent property
B.Heat capacity
C.Ionization
D.Protection
Answer and explanation locked
93Biologylipids energy density
C-H bonds in lipids are important:
A.As insulating material
B.Providing more energy
C.As exoskeleton
D.As cuticle of leaves
Answer and explanation locked
94Biologymonosaccharide sweetness
These carbohydrates are sweetest among all carbohydrates:
A.Monosaccharides
B.Disaccharides
C.Oligosaccharides
D.Polysaccharides
Answer and explanation locked
95Englishpresent perfect continuous
I ________ English for five years.
A.Study
B.Am Studying
C.Have been studying
D.studies
Answer and explanation locked
96Englishsubject verb agreement stative
The soup ________ good
A.Taste
B.Tastes
C.Is tasting
D.Has taste
Answer and explanation locked
97Englishfirst conditional start
Unless we _________ now, we cannot be on time
A.Start
B.Will start
C.Do not start
D.Are starting
Answer and explanation locked
98Englishcomparative expression all other
Daud is better than _________ of the college.
A.All teachers
B.Any teachers
C.All other teachers
D.Any teacher
Answer and explanation locked
99Englishpreposition collocations abide by
Abide ________ the traffic laws for smooth and safe flow of traffic.
A.On
B.With
C.By
D.To
Answer and explanation locked
100Englishprefer preposition to
He prefers death ________ dishonor.
A.Over
B.On
C.Upon
D.To
Answer and explanation locked
101Englishvocabulary surplus
What does the word 'SURPLUS' mean?
A.In excess
B.A mathematical term
C.Within reach
D.Salutation
Answer and explanation locked
102Englishvocabulary spill
What does the word 'SPILL' mean?
A.Coil
B.Deliver
C.Spoil
D.Spread
Answer and explanation locked
103Englishvocabulary curious
What does the word 'CURIOUS' mean?
A.Keen
B.Careful
C.Quest
D.Cruel
Answer and explanation locked
104Englishpunctuation colon use
Pick the sentence with correct punctuation:
A.He had one motto "serving humanity."
B.He, had one motto, serving humanity.
C.He had one motto; serving humanity.
D.He had one motto: serving humanity.
Answer and explanation locked
105Englishspelling colleague
Pick the word with correct spelling:
A.Collique
B.Colleague
C.Collegue
D.Co-leageu
Answer and explanation locked
106Englishspelling acquaintance
Pick the word with correct spelling:
A.Acquaintance
B.Equatance
C.Equantence
D.Equentense
Answer and explanation locked
107Englishspelling priority
Pick the word with correct spelling:
A.Prayority
B.Priarity
C.Prioarily
D.Priority
Answer and explanation locked
108Englishpunctuation semicolon in quotations
Pick the sentence with correct punctuation:
A."He did his best that was all anyone could do in any job".
B.He did his best, that was all anyone could do in any job.
C."He did his best: that was all anyone could do in any job".
D."He did his best; that was all anyone could do in any job".
Answer and explanation locked
109Englishquestion word order
Pick the correct option:
A.How has the chair leg broken?
B.How has the leg of the chair broken?
C.How the leg of the chair has broken?
D.How the chair's leg is broken?
Answer and explanation locked
110Chemistryvapor pressure dependence
Vapor pressure is independent of which factor?
A.Temperature
B.Intermolecular forces
C.Density of liquid
D.Surface area of liquid
Answer and explanation locked
111Chemistryboiling point intermolecular forces
The boiling point of ether is less as compared to alcohols and phenols due to:
A.Functional group
B.Intermolecular forces
C.Nature of alkyl groups
D.Isomerism
Answer and explanation locked
112Chemistryhydrogen bonding ice fusion
When 2 ice cubes are pressed over each other they unite to form one cube due to:
A.Dipole dipole attraction
B.Covalent attraction
C.Van Der Waal's forces
D.H-bonding
Answer and explanation locked
113Chemistryionic crystal structure nacl
Which statement correctly describes the structure of sodium chloride crystal?
A.Each sodium ion is surrounded by six chloride ions and each chloride ions surrounded by six sodium ions
B.The crystal is face centered cubic structure
C.Each sodium ion is surrounded by 3 chloride ions and each chloride ion surrounded by 3 sodium ions
D.Inter molecular forces are present between two oppositely charges ions
Answer and explanation locked
114Chemistrylattice energy trend
The greater Lattice energy is shown by:
A.NaCl
B.NaBr
C.NaI
D.NaF
Answer and explanation locked
115Chemistrythermal conductivity metals
Thermal conductivity of metals is due to:
A.Layered structure of metals
B.Freely moving electrons
C.Loosely held metal atoms
D.Vibrational movement of metals
Answer and explanation locked
116Chemistryhaber process pressure effect
The high pressure of 200 atm in Haber's process is used for:
A.Better yield
B.Lower yield
C.Lower rate
D.Cost decrease
Answer and explanation locked
117Chemistrycatalyst equilibrium attainment
By which of the following factors equilibrium state is attained earlier?
A.Temperature
B.Pressure
C.Concentration
D.Catalyst
Answer and explanation locked
118Chemistrytemperature effect on rate q10 rule
When temperature of reacting gases is raised by 10 K, the reaction rate will increase to:
A.Double
B.Three times
C.Four times
D.Five times
Answer and explanation locked
119Chemistryactivation energy definition
The minimum amount of energy required by the colliding particles for effective collisions is called:
A.Activation energy
B.Lattice energy
C.Bond energy
D.Hydration energy
Answer and explanation locked
120Chemistrystate functions vs path functions
Which of the following is not a state function?
A.Pressure (P)
B.Work (W)
C.Volume (V)
D.Temperature (T)
Answer and explanation locked
121Chemistrylattice energy definition
Equation represents which energy change? Mg2+(g) + O2−(g) → MgO(s)
A.Atomization
B.Neutralization
C.Lattice energy
D.Solution
Answer and explanation locked
122Chemistryoverall order reaction no plus o3
When nitric oxide reacts with ozone, the order of reaction will be:
A.2nd
B.3rd
C.1st
D.Zero
Answer and explanation locked
123Chemistryelectrolysis reduction site
During electrolysis, reduction always occurs at the:
A.Anode
B.Cathode
C.SHE
D.Salt bridge
Answer and explanation locked
124Chemistryelectronegativity fluorine trend
The reason of highest electronegativity value of Fluorine is:
A.Complete outermost shell
B.Ability to form negative ion
C.Existence as diatomic molecule
D.Smaller size and higher nuclear charge in the respective period
Answer and explanation locked
125Chemistryvsepr shape prediction
Valance shell electron pair repulsion theory explains:
A.Bond Energy
B.Bond Length
C.Shapes and Bond Energy
D.Shapes
Answer and explanation locked
126Chemistryhybridization orbital geometry
Which of the following has sp3 hybridization?
A.BF3
B.C2H4
C.BeCl2
D.CH4
Answer and explanation locked
127Chemistrybond length factors
The factor which is not affecting bond length is:
A.Pressure of multiple bonds
B.Nature of hybridization present
C.Difference in electronegativity between the two bonded atoms
D.Ionization energies of the two bonded atoms
Answer and explanation locked
128Chemistrymechanical properties of metals
Which of the following substance is malleable and ductile?
A.Sodium chloride
B.Copper sulphate
C.Mercury
D.Aluminum
Answer and explanation locked
129Chemistrycrystal structure of sodium
Co-ordination number of Na is:
A.10
B.9
C.8
D.12
Answer and explanation locked
130Chemistrycatalytic cracking
The cracking method used to obtain better quality gasoline is:
A.Thermal
B.Catalytic
C.Steam
D.Radiations
Answer and explanation locked
131Chemistryhomocyclic compounds classification
Homocyclic organic compounds are sub divided into two types namely:
A.Alicyclic and Aromatic
B.Open chain and branched chain
C.Aromatic and non-aromatic
D.Antiaromatic and antialicyclic
Answer and explanation locked
132Chemistryfriedel crafts acylation
Acetophenone can be formed by which of the following reaction of benzene?
A.Alkylation
B.Acylation
C.Halogenation
D.Nitration
Answer and explanation locked
133Chemistrycycloalkane general formula
Generic formula of cycloalkane is:
A.CnH2n+2
B.CnH2n
C.CnH2n−1
D.CnCH2n−2
Answer and explanation locked
134Chemistrylucas test
Which of the following reactions differentiates alcohol from phenol?
A.Lucas test
B.Halogenations
C.Nitration
D.Iodoform test
Answer and explanation locked
135Chemistryreactivity for c o bond cleavage
The order of reactivity of alcohol when C-O bond breaks is:
From the equation (N2 + 3H2 → 2NH3), how many moles of NH3 are produced from 2.5 moles of N2?
A.2.5 moles
B.2 moles
C.5 moles
D.7.5 moles
Answer and explanation locked
142Chemistryphoton energy frequency
The amount of energy associated with quantum of radiation is directly proportional to:
A.Photon
B.Wavelength
C.Frequency
D.Velocity
Answer and explanation locked
143Chemistrymagnetic quantum number count
If value of azimuthal quantum number is 2 then total values of magnetic quantum number will be:
A.03
B.05
C.07
D.10
Answer and explanation locked
144Chemistryf orbital degeneracy
Total number of directions of f-orbitals in space are:
A.05
B.03
C.07
D.06
Answer and explanation locked
145Chemistryorigin of quantum numbers
Which of the following quantum number is not obtained from Schrodinger Wave equation?
A.Principal Quantum Number
B.Spin Quantum Number
C.Azimuthal Quantum Number
D.Magnetic Quantum Number
Answer and explanation locked
146Chemistryhunds rule
The electronic configuration for degenerate orbitals is explained by:
A.Aufbau Principle
B.n + l rule
C.Hund's rule
D.Pauli exclusion principle
Answer and explanation locked
147Chemistrykinetic molecular theory
The idea that molecules in gases are in constant movement is called:
A.Kinetic theory of gases
B.Crystal field theory
C.Molecular orbital theory
D.Transition state theory
Answer and explanation locked
148Chemistrypressure units
The SI unit for pressure is:
A.mm of Hg
B.Pascal
C.Bar
D.Torr
Answer and explanation locked
149Chemistryideal gas law temperature volume
If both temperature and volume of gas are doubled, the pressure:
A.Cannot be predicted
B.Is reduced to 1⁄2
C.Remains unchanged
D.Is doubled
Answer and explanation locked
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