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# IIT JAM

Pratiksha Gupta asked   •  just now

## why medrum is more acidic Related: General Organic Chemistry - General Organic Chemistry, Organic Chemistry?

Nishu Kalirawna asked   •  4 minutes ago

## A particle is moving along a straight line x=a with constant velocity voj. If particle is at(a,0) at t=0 find Vr at t ?

Priyanshu Gangwar asked   •  4 minutes ago

## Needed a Document for thermodynamics? Related: IIT JAM Past Year Papers and Model Test Paper (All Branches)?

माही चौधरी asked   •  5 minutes ago

## Lim { n.cos(π\4.n). Sin(π\4.n); n tends to infinite }?

Chandana Prakash asked   •  6 minutes ago

## In a system of units in which velocity of light is c=1, which of the following is a Lorentz transformation? a. x'=4x, y'=y, z=z', t'=0.25t b. x'=x - 0.5t, y'=y, z'=z, t'=t x c. x'=1.25x - 0.75t, y'=y, z'=z, t'=0.75t-1.25x d. ... more

Nishu Kalirawna asked   •  10 minutes ago

## A particle moving along a straight line x=a with constant velocity Voj. Find if the particle is at (a,0 ) at t=0 find vr at t?

S Tejaswini asked   •  20 minutes ago

## Let W1 and W2 be subspaces of the real vector space defined byW1 = {(x1,x2, ...,x100) : xi = 0 if i is divisible by 4},W2 = { (x1;x2, ....x100) : xi = 0 if i is divisible by 5}.Then the dimension of W1 ∩ W2 is ____Correct answer is between '60,60'. Can you explain this answer?

Aishitha asked   •  24 minutes ago

## (2/3x 2y) (3/3x-2y)=17/5 (5/3x 2y) (1/3x-2y)=2 Then x y=? Can anyone do it with solution?

Debajyoti Banerjee asked   •  34 minutes ago

## Flower is a modified shoot or a branch. Which one of the following DOES NOT provide evidence in support of the above statement?a)Axis nature of the thalamusb)Leaf- like arrangement of the floral membersc)Homology of floral and vegetative budsd)Occurrence of mitosis in the floral tissuesCorrect answer is option 'D'. Can you explain this answer?

Namit Budhwar asked   •  44 minutes ago

## Land mass occupied by forest is about _____ %.Correct answer is '22'. Can you explain this answer?

Vaishnavi Rana asked   •  48 minutes ago

## How many number of compound having IR – stretching frequency higher than 1720:Correct answer is '10'. Can you explain this answer?

Maulik Ramanandi asked   •  56 minutes ago

## At 300 K calculate the value of ΔG° _______ in kJ/mol.Note that it is the same for both the substrate and the inhibitor at this temperature.Correct answer is '50'. Can you explain this answer?

P For Physics asked   •  57 minutes ago

## In a heat engine based on the Carnot cycle, heat is added to the working substance at constant a)Entropyb)Pressurec)Temperatured)Volume Correct answer is option 'C'. Can you explain this answer?

Prachi Khankar asked   •  1 hour ago

## The velocity of an enzyme-catalysed reaction following Michaelis–Menten kinetics, at the substrate concentration equal to 0.3×Km, is equal to ____ × Vmax (round off to 2 decimal places)Correct answer is '0.22 to 0.24'. Can you explain this answer?

Iaishah Dkhar asked   •  1 hour ago

## The area of the surface generated by rotating the curve x = y3, 0 ≤ y ≤ 1, about the y-axis, isa)b)c)d)Correct answer is option 'D'. Can you explain this answer?

pratik kundu asked   •  1 hour ago

## Several enzymes are involved in DNA repair pathways. Which one of the following enzymes is also referred to as a suicidal enzyme?a)Ligaseb)Polymerasec)Methyltransferased)Excision repair enzymeCorrect answer is option 'C'. Can you explain this answer?

Anand Prajapati asked   •  1 hour ago

## A 1 W point source at origin emits light uniformly in all the directions. If the units for both the axes are measured in centimetre, then the Poynting vector at the point (1,1,0) in W/cm2 is    are unit vectors in Cartesian − coordinate system. )a)b)c)d)Correct answer is option 'A'. Can you explain this answer?

Trishna Karmakar asked   •  1 hour ago

## An atomic nucleus X with half-life TX decays to a nucleus Y, which has half-life TY. The condition(s) for secular equilibrium is(are)a)TX  TYb)TX < TYc)TX ≪ TYd)TX ≫ TYCorrect answer is option 'D'. Can you explain this answer?

Shoaib Ali asked   •  1 hour ago

## The total number of enantiomeric pairs possible of the given compound:Correct answer is '4'. Can you explain this answer?

Omprakash ASF asked   •  1 hour ago

## The major product formed in the following reaction is:... more

Mona Sharma asked   •  1 hour ago

## Referring to the diagram above, path A isa)cooling and crystallizationb)burial and lithificationc)weathering and depositiond)cooling and upliftCorrect answer is option 'B'. Can you explain this answer?

Mahalakshmi Asoken asked   •  1 hour ago

## Let  Let V be the subspace of  defined by Then the dimension of V isa)pn − rank(T)b)mn − p rank(T)c)p(m − rank(T))d)p(n − rank(T))Correct answer is option 'D'. Can you explain this answer?

Yukta Mahashabde asked   •  1 hour ago

## The minimum light intensity that the human eye can perceive is 10-10 Wm-2. The area of the opening of our eye (the pupil) is approximately 4 cm-2. Consider yellow light with wavelength λ = 600 nm. The number of photons incident on the retina per second at the minimum intensity for the eye to respond isa)1.5 × 103b)5 × 103c)8 × 103d)1.2 × 104Correct answer is option 'D'. Can you explain this answer?

Showkat Likmani asked   •  1 hour ago

## Needed a Video for nucleophilic? Related: Acyloin Condensation - Name Reaction, Organic Chemistry, IIT JAM?

Neha Mittal asked   •  1 hour ago

## The function f(x,y) = x3 + 2xy + y3 has a saddle point ata)(0, 0)b)c)d)(−1, −1)Correct answer is option 'C'. Can you explain this answer?

Preetha Dilip asked   •  1 hour ago

## The standard oxidation potentials for oxidation of NADH and H2O are + 0.315 V and – 0.815 V, respectively. The standard free energy for oxidation of 1 mole of NADH by oxygen under standard conditions (correct to 1 decimal place) is _______ kJ. [Faraday Constant is 96500 C mole–1]Correct answer is between '-219.0,-217.0'. Can you explain this answer?

Tech News asked   •  1 hour ago

## Can we score good marks without purchasing EduRev infinity ?

Sakshi Bh asked   •  1 hour ago

## The un-normalized radial wave function of a certain hydrogen atom eigenstate is A possible angular part of the eigenstate is:... more

Sakil Ahmed asked   •  1 hour ago

## Males of a fish species react to other males of their species intruding into their territories with a characteristic headstand display. In an experiment, a male fish in an aquarium was shown a mirror, which provoked the headstand display. Non- reflective objects of the same shape and size, and water from other aquaria housing male fish of the same species in similar physiological condition failed to evoke a response. This experiment shows thata)Visual cues are not sufficient to evoke the headstand responseb)Visual cues are sufficient to evoke the headstand responsec)Chemical cues are sufficient to evoke the headstand responsed)Chemical cues are not sufficient to evoke the headstand responseCorrect answer is option 'B,D'. Can you explain this answer?

SANJAY GARG asked   •  1 hour ago

## The number of critical points of the function  is  ___________Correct answer is between '5,5'. Can you explain this answer?

Shruti S asked   •  1 hour ago

## How is GC and NMR used for amino acid analysis?

Maulik Ramanandi asked   •  2 hours ago

## Two molecules of a protein associate to form a homodimer. Let S be the combined translational and rotational entropies of one monomer.The combined translational and rotational entropies of the homodimer will bea)2×Sb)Sc)Marginally more than 2×Sd)Marginally more than SCorrect answer is option 'D'. Can you explain this answer?

Saumil Diwan asked   •  2 hours ago

## For the input voltage Vi = (200 mV) sin (400t), the amplitude of the output voltage (V0) of the given OPAMP circuit is ________ V.(Round off to 2 decimal places)Correct answer is between '11.0,11.03'. Can you explain this answer?

Parul Mehta asked   •  2 hours ago

## Let  where k,  Then  is _______ . (correct up to one decimal places).Correct answer is '0.5'. Can you explain this answer?

Rashmi Kumari asked   •  2 hours ago

## Sir or madam I want to clear my basics in maths and physics for the purpose of understanding so how can I start?

Dharmender Kumar Verma asked   •  2 hours ago

## Which of the functions below is a common eigen function of   and    operators?... more

Sonelal Sonakar asked   •  2 hours ago

## N the temperature range of 250K to 450K the pre-exponential factor A for the reaction. Cl(g) H_(2)(g)rarr HCl(g) H(g) is found to be equal to 1.20times10^(10)dm^(3)mol^(-1)s^(-1) .If M(Cl)=35.453 gmol^(-1) M H_(2) =2.0i6gmol^... more

Aakash Kumar asked   •  2 hours ago

## Then the value of integral  from (0, 0) to (1, 1) along the path    Correct answer is between '1.49,1.55'. Can you explain this answer?

Lovely Dixit asked   •  2 hours ago

## The most unstable species is. Ti(C2H5)4 Ti(CH2Ph)4 Pb(CH3)4 Pb(C2H5)4?

Vikas Punia asked   •  2 hours ago

## The order of carbonyl stretching frequency in the IR spectra of ketone, amide and anhydride is:a)Anhydride > amide > ketoneb)Ketone > amide > anhydridec)Amide > anhydride > ketoned)Anhydride > ketone > amideCorrect answer is option 'D'. Can you explain this answer?

Kriahna Kant asked   •  2 hours ago

## Two mammalian cell lines with doubling times of 12 h and 36 h were cultured with radioactive thymidine for 8 h. The cells were further cultured without the radioactive thymidine for 72 h. Incorporated radioactivity was measured in equal number of cells in each culture, which revealed thata)both the cell lines had the same amount of radioactivity  b)the fast growing cells had more radioactivityc)the slow growing cells had more radioactivityd)neither of the cells had any radioactivityCorrect answer is option 'C'. Can you explain this answer?

Feyba Jijimon asked   •  2 hours ago

## Which one of the points lies ABOVE the parabola y=2x2 and INSIDE the circle x2+y2 =4 ?a)Pb)Qc)Rd)SCorrect answer is option 'B'. Can you explain this answer?

Vaani Jain asked   •  2 hours ago

## Limntends to infinity I/rootn /{(1/root3 root6 ) (1/root6 root9).1/root3n root(3n 3)?

Ram Ram asked   •  2 hours ago

## A small spherical ball having charge q and mass m, is tied to a thin massless nonconducting string of length l.  The other end of the string is fixed to an infinitely extended thin non-conducting sheet with uniform surface charge density σ . Under equilibrium, the string makes an angle 45° with the sheet as shown in the figure. Then σ is given by (g is the acceleration due to gravity and ε0 is the permittivity of free space)a)b)c)d)Correct answer is option 'C'. Can you explain this answer?

Rahul Singh asked   •  2 hours ago

## The function  is continuous everywhere except ata)x = 0b) x = ±9c) x = ±9id)x = ±3iCorrect answer is option 'D'. Can you explain this answer?

Iron Man asked   •  3 hours ago

## Which one of the following statements on ‘cro repressor’ and ‘immunity repressor’ of lambda phage is NOT correct?a)Both bestow immunity to externally infecting phageb)Both inhibit phage gene expression and help in the integration into host genomec)The production and maintenance of the lysogenic state is due to the antagonism of two repressorsd)Upon infection by lambda phage, cro gene is transcribed resulting in the synthesis of a protein repressor that inhibits the synthesis of immunity repressorCorrect answer is option 'B'. Can you explain this answer?

Rayanki Praneeth asked   •  3 hours ago

## Let {an} be a sequence of positive real numbers satisfying  Then all the terms of the sequence lie in  a)[1/2, 3/2]b)[0,1]c)[1,2]d)[1,3]Correct answer is option 'D'. Can you explain this answer?

Prachi Khankar asked   •  3 hours ago

## The area of the grey region in the figure given below is _______. Correct answer is between '17.0,18.0'. Can you explain this answer?

Sumit Kumar asked   •  3 hours ago

## The number of elements in the set {x ∈ S3: x4 = e), where e is the identity element of the permutation group S3, is    Correct answer is between '4,4'. Can you explain this answer?

Jharodiya Ankit asked   •  3 hours ago

## Let U= {1, 2, 3, 4, 5.} A subset S is chosen uniformly at random from the non-empty subsets of U. What is the probability that S does NOT have two consecutive elements?a)9/31b)10/31c)11/31d)12/31Correct answer is option 'D'. Can you explain this answer?

Shatabdi Chanda asked   •  3 hours ago

## Which of the following have highest resonance energy? a) pyrole b)furan c)pyridine. Correct ans is c)pyridine. Can you explain how?

Rayanki Praneeth asked   •  3 hours ago

## The radius of convergence of the power series Correct answer is '0.5'. Can you explain this answer?

Shubham Ojha asked   •  3 hours ago

## The CORRECT order of carbonyl stretching frequencies for the following compounds isa)II < I < III < IVb)I < III < II < IVc)IV < II < III < Id)III < IV < II < ICorrect answer is option 'D'. Can you explain this answer?

Ruksar Chaush asked   •  3 hours ago

## 10 ml of 0.lM solution of weak acid was mixed with 4 ml 0.1M solution of strong base NaOH. pH of the solution measured was 5.12. If log (0.4/0.6):0.f 8, pKa of the weak acid will be A) 4.3 B) 3.7 c) 5.3 D) 5.12?

Meenu John asked   •  3 hours ago

## What is the equivalent weight of lactose?

Apurva Arun asked   •  3 hours ago

## Determine the volume of the region that lies behind the plane x y z=8 and in front of the region in the yz- plane that is bounded by z=3/2√y and z=3/4 y is?

Asma Fatima asked   •  4 hours ago

## In tetrahedral geometry,which one of the following set of electronic configuration will have orbital contribution to the magnetic moment? a)d³,d⁴,d8,d9 b)d¹,d6,d7,d9 c)d3,d4,d7,d9 d)d1,d3,d4,d9?

Lakhan Munnur asked   •  4 hours ago

## 28. If average molecular wt. of air is 29, then assuming N, and o, gases are there which options are correct regarding composition of air: (1) 75% by mass of N, (ii) 75% by moles N2 (iii) 72.41% by mass of N2 (a) only (i) is ... more

Wahida Khatun asked   •  4 hours ago

## The temperature of two moles of an ideal gas is raised from 300K to 400K,what is the value of delH- delE?

Deline Deline asked   •  4 hours ago

## The nonzero value of n for which the differential equation  becomes exact is a)-3b)-2c)2d)3Correct answer is option 'D'. Can you explain this answer?

B P S asked   •  4 hours ago

## With respect to periodic properties, the CORRECT statement isa)Electron affinity order is F > O > Clb)First ionisation energy order is Al > Mg > Kc)Atomic radius order is N > P > Asd)Ionic radius order is K+ > Ca2+ > Mg2+Correct answer is option 'D'. Can you explain this answer?

Mrudula1999 Rd asked   •  4 hours ago

## Consider the following anatomical features:All chordates are characterized by the presence ofa)only Pb)only P, Q and Rc)only P, Q, S and Td)only P and QCorrect answer is option 'D'. Can you explain this answer?

Borra Manikanta asked   •  4 hours ago

## Which of the following statement(s)  is(are) TRUE?  a)There exists a connected set in R which is not compactb)Arbitrary union of closed intervals in R need not be compactc)Arbitrary union of closed intervals in R is always closedd)Every bounded infinite subset R of R has a limit point in V itselfCorrect answer is option 'A,B'. Can you explain this answer?

Sushama Kumari asked   •  4 hours ago

## H2(g) =2H(g);∆H298K = 104.2Kcal .The bond energy of H-H bond is a) 52.1Kcal b) 104.2 Kcal c) 208.4 Kcal d) zero .The correct answer is option a).Can you explain this answer?

Mayank Vedwal asked   •  4 hours ago

## (Ag ) e==Ag, Cu 2 2e =Cu, Eo= 0.50 V; Eo = 0.34 V A 100 ml solution is 1080 mg with respect to Agt and 635 mg with respect to Cu2. If 0.1mg Ag left in the solution is considered to be the complete deposition of Ag , the c... more

Ankita Dubey asked   •  5 hours ago

## Aluminium (Al) can occur in both tetrahedral and octahedral co- ordinations in silicates. The amount of octahedral Al in a pyroxene crystal of composition MG1.4 Fe0.4 Al0.4 Si1.8 O6 is ____ (give answer in one decimal place).Correct answer is '0.2'. Can you explain this answer?

Aleena Varghese asked   •  5 hours ago

## Molecular weight of circular polymer of 38 arginine molecules?

Rachika Soni asked   •  5 hours ago

## The plane of polarisation of a plane polarized light rotates by 60° after passing through a waveplate. The pass-axis of the wave plate is at an angle α with respect to the plane of polarisation of theincident light. The wave plate and α area)λ/4, 60°b)λ/2, 30°c)λ/2, 120°d)λ/4, 30°Correct answer is option 'B'. Can you explain this answer?

Purneet Sharma asked   •  5 hours ago

## Find the maximum and minimum value of f(x)=sinx + 1/2 cos2x in [0,pie/2] plz someone solve this.

Hitesh Sharma asked   •  5 hours ago

## What are the consequences of gravitation?

Rachika Soni asked   •  5 hours ago

## Two beams of light in the visible range (400 nm - 700 nm) interfere with each other at a point. The optical path difference between them is 5000 nm. Which of the following wavelengths will interfere constructively at the given point?a)416.67 nmb)555.55 nmc)625 nmd)666.66 nmCorrect answer is option 'A,B,C'. Can you explain this answer?

Aniket Choudhary asked   •  6 hours ago

## A nozzle is in the shape of a truncated cone, as shown in the figure. The area at the wide end is 25 cm2 and the narrow end has an area of 1 cm2. Water enters the wider end at a rate of 500 gm/sec. The height of the nozzle is 50 cm and it is kept vertical with the wider end at the bottom. The magnitude of the pressure difference in kPa (1 kPa = 103 N/m2) between the two ends of the nozzle is _______________.Correct answer is '17.5'. Can you explain this answer?

Preetha Dilip asked   •  6 hours ago

## Consider two nuclei with the same mass number A. For which of the following values of A, the fusion reaction is NOT possible?a)15b)22c) 29d) 36Correct answer is option 'D'. Can you explain this answer?

Digyash Kumar Bhattacharyya asked   •  6 hours ago

## The efficiency of a reversible heat engine from the PV diagram?

Rubi Sharma asked   •  6 hours ago

## Choose the correct product(s) in the following chemical reaction:a)b)c) d)Correct answer is option 'A,B,C'. Can you explain this answer?

Manohar Lal Jat asked   •  6 hours ago

## Which of the following statement(s) is/are true?a)Newton’s laws of motion and Maxwell’s equations are both invariant under Lorentz transformations.b)Newton’s laws of motion and Maxwell’s equations are both invariant under Galilean transformations.c)Newton’s laws of motion are invariant under Galilean transformations and Maxwell’s equations are invariant under Lorentz transformations.d)Newton’s laws of motion are invariant under Lorentz transformations and Maxwell’s equations are invariant under Galilean transformations.Correct answer is option 'C'. Can you explain this answer?

Pawan Solanki asked   •  7 hours ago

## 2,4-Dinitrophenol (DNP) is an uncoupler thata)cannot freely pass through plasma membraneb)enhances ATP productionc)is a non-toxic compound at high dosed)makes the inner mitochondrial membrane leaky to protonsCorrect answer is option 'D'. Can you explain this answer?

Prem Mehrotra asked   •  7 hours ago

## A reaction follows second order rate law,   a)A plot of [A] versus t is a straight lineb)A plot of 1/[A] versus t is a straight linec)A plot of ln[A] versus t is a straight lined)A plot of e[A] versus t is a straight lineCorrect answer is option 'B'. Can you explain this answer?

B P S asked   •  7 hours ago

## For a zero order reaction, the half-life depends on the initial concentration [C0] of the reactant asa)[C0]b)[C0]0c)[C0]–1d)[C0]1/2Correct answer is option 'A'. Can you explain this answer?

Labham Singh asked   •  7 hours ago

## Needed a Document for lanthenides? Related: Inorganic Chemistry for IIT JAM?

Papai Bhandari asked   •  7 hours ago

## Among the compounds given in the option (a) to (d), the one that exhibits a sharp band at around 3300 cm–1 in the IR spectrum is:a)1, 2-butadieneb)1, 3-butadinec)1-butyned)2-butyneCorrect answer is option 'C'. Can you explain this answer?

Yukta Mahashabde asked   •  8 hours ago

## An enzyme requires both aspartate (pKa of side chain = 4.5) and histidine (pKa of side chain = 6.5) residues in the catalytic site to be protonated for activity. The expected enzyme activity (in %) at a pH of 5.5 would be closed toa)90b)78c)50d)10Correct answer is option 'D'. Can you explain this answer?

Esha Kumari asked   •  8 hours ago

## Viral capsids are made up of morphological subunits called capsomeres. One of the common capsomeres is icosahedral. The icosahedron is a regular polyhedron with a)16 triangular facets and 12 vertices.b)20 triangular facets and 12 vertices.c)16 triangular facets and 16 vertices.d)20 triangular facets and 16 vertices.Correct answer is option 'B'. Can you explain this answer?

Sanjeev Kumar asked   •  8 hours ago

## Molality of ammonium sulphite solution that has the same ionic strength as 1 mol /kg solution of potassium chloride is?

Abhay Sharma asked   •  8 hours ago

## Let I denote the 4 × 4 identity matrix. If the roots of the characteristic polynomial of a 4 × 4 matrix M are  , then M8 =a)I + M2b)2I + M2c)2I + 3M2d)3I + 2M2Correct answer is option 'C'. Can you explain this answer?

Apoorva S asked   •  8 hours ago

## Two ions can replace each other in a crystal structure only if the difference between their ionic radii does not exceed ________ %.Correct answer is '15'. Can you explain this answer?

Preetha Dilip asked   •  8 hours ago

## The total number of mappings from the set {1, 2} to the set {3,4,5,6,7} is _____Correct answer is '25'. Can you explain this answer?

Amitabh Parothia asked   •  8 hours ago

## 1-amino pentane-1,4-dione?

Sarbajeet Chakraborty asked   •  8 hours ago

## A platinum electrode is immersed in a solution containing 0.1 M Fe 2 and 0.1 M Fe 3 . It is coupled with SHE. Concentration of Fe 3 is increased to 1.0 M without change in [Fe 2 ] then change in EMF (in centi volt) is?

Jyota Mishr asked   •  8 hours ago

## Calculate the liquid function potential at 25°C between two solutions of HCl having mean ionic activities of 0.01 and 0.001, respectively. The transference number of H  ion (ft) in HCl may be taken as 0.83. a) 0.0061b) 0.0039c) 0.0010d) 0.0090Correct answer is option 'B'. Can you explain this answer?

Subhash Kumar asked   •  9 hours ago

## A first order reaction is 87.5% complete at the end of 30 minutes. The half-life of the reaction is __________ minute(s).Correct answer is between '9.8,10.2'. Can you explain this answer?

Csphk Pre asked   •  9 hours ago

## Out of the following statements, choose the correct option(s) about a perfect conductor.a)The conductor has an equipotential surfaceb)Net charge, if any, resides only on the surface of conductorc)Electric field cannot exist inside the conductord)Just outside the conductor, the electric field is always perpendicular to its surfaceCorrect answer is option 'A,B,C,D'. Can you explain this answer?

Samiksha Pawar asked   •  9 hours ago

## The density of a mixture of Oxygen and Nitrogen gas at NTP is 1.3g/L. What is the partial pressure of nitrogen?

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