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2005
4.5g of aluminium (at. mass 27 amu) is deposited at cathode from $Al^{3+}$ solution by a certain quantity of electric charge. The volume of hydrogen produced at STP from $H^+$ions in solution by the same quantity of electric charge will be -
neet
chemistry
past papers
2005
97
asked
Jul 24, 2018
by
pady_1
1
answer
A nuclide of an alkaline earth metal undergoes radioactive decay by emission of the $\alpha$-particles is succession. The group of the periodic table to which the resulting daughter element would belong is :-
neet
chemistry
past papers
2005
96
asked
Jul 24, 2018
by
pady_1
1
answer
In a set of reactions acetic acid yielded a product D
neet
chemistry
past papers
2005
89
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Jul 24, 2018
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pady_1
0
answers
The major organic product formed from the following reaction
neet
chemistry
past papers
2005
88
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Jul 24, 2018
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pady_1
0
answers
The cell membranes are mainly composed of :-
neet
chemistry
past papers
2005
87
asked
Jul 24, 2018
by
pady_1
1
answer
What is the correct relationship between the pHs of isomolar solutions of sodium oxide ($pH_1$ ), sodium sulphide ($pH_2$ ), sodium selenide ($pH_3$ ) and sodium telluride ($pH_4$) ?
neet
chemistry
past papers
2005
86
asked
Jul 24, 2018
by
pady_1
1
answer
For a first order reaction $A\to B$ the reaction rate at reactant concentration of 0.01M is found to be$2.0 \times 10^{-5} mole L^{-1} S^{-1}$. The half life period of the reaction is :-
neet
chemistry
past papers
2005
85
asked
Jul 24, 2018
by
pady_1
1
answer
The monomer of the polymer
neet
chemistry
past papers
2005
77
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Jul 24, 2018
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pady_1
0
answers
The rate of reaction between two reactants A and B decreases by a factor of 4 if the concentration of reactant B is doubled. The order of this reaction with respect to reactant B is :-
neet
chemistry
past papers
2005
76
asked
Jul 24, 2018
by
pady_1
1
answer
A solution has a 1 :4 mole ratio of pentane to hexane. The vapour pressures of the pure hydrocarbons at $20^{\circ}$C are 440 mm Hg for pentane and 120 mm Hg for hexane. The mole fraction of pentane in the vapour phase would be-
neet
chemistry
past papers
2005
75
asked
Jul 24, 2018
by
pady_1
1
answer
Which one of the following is expected to exhibit optical isomerism ? (en = ethylenediamine)
neet
chemistry
past papers
2005
74
asked
Jul 24, 2018
by
pady_1
1
answer
Four successive members of the first row transition elements are listed below with their atomic numbers. which one of them is expected to have the highest third ionization enthalpy :-
neet
chemistry
past papers
2005
73
asked
Jul 24, 2018
by
pady_1
2
answers
Which of the following undergoes nucleophilic substitution exclusively by$ SN^1$mechanism :
neet
chemistry
past papers
2005
72
asked
Jul 24, 2018
by
pady_1
1
answer
The number of moles of $KMnO_4$ reduced by one mole of KI in alkaline medium is :-
neet
chemistry
past papers
2005
71
asked
Jul 24, 2018
by
pady_1
1
answer
The mass of carbon anode consumed (giving only carbondioxide) in the production of 270 kg of aluminium metal from bauxite by the Hall process is :- <br> (Atomic mass : Al = 27)
neet
chemistry
past papers
2005
64
asked
Jul 24, 2018
by
pady_1
1
answer
The vapour pressure of two liquids 'P' and 'Q' are 80 and 60 torr, respectively. The total vapour pressure of solution obtained by mixing 3 mole of P and 2 mole of Q would be :-
neet
chemistry
past papers
2005
63
asked
Jul 24, 2018
by
pady_1
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answer
Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species :-
neet
chemistry
past papers
2005
62
asked
Jul 24, 2018
by
pady_1
1
answer
The chirality of the compound
neet
chemistry
past papers
2005
61
asked
Jul 24, 2018
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pady_1
1
answer
The mole fraction of the solute in one molal aqueous solution is :-
neet
chemistry
past papers
2005
60
asked
Jul 24, 2018
by
pady_1
1
answer
Equilibrium constants $K_1$ and $K_2$ for the following equilibria : <br> $NO(g)+\frac{1}{2}O_2 {\stackrel{k_1}{\rightleftharpoons}} NO_2(g)$ <br> and $2NO_2 (g) {\stackrel{k_2}{\rightleftharpoons}} 2NO (g) + O_2 (g) $ <br> are related as -
neet
chemistry
past papers
2005
59
asked
Jul 24, 2018
by
pady_1
1
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A ball is thrown vertically up ward. It has a speed of 10m/sec when it has reached one half of its maximum height. How high does the ball rise? Take g = $10=m/s^2-$
neet
physics
past papers
2005
50
asked
Jul 24, 2018
by
pady_1
2
answers
Two bodies have their moments of inertia I and 2I respectively about their axis of rotation. If their kinetic energies of rotation are equal, their angular momentum will be in the ratio -
neet
physics
past papers
2005
49
asked
Jul 24, 2018
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pady_1
1
answer
Two boys are standing at the ends A and B of a ground where AB = a. The boy at B starts. running in a direction perpendicular to AB with velocity v1. The boy at A starts running simultaneously with velocity v and catches the other boy in a time t, where t is -
neet
physics
past papers
2005
48
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Jul 24, 2018
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pady_1
1
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The displacement x of a particle varies with time$x=ae^{-\alpha t}+be^{\beta t}$, where $a,b,\alpha$ and $\beta$ are positive constants. The velocity of the particle will -
neet
physics
past papers
2005
47
asked
Jul 24, 2018
by
pady_1
2
answers
Energy levels A, B and C of a certain atom correspond to increasing values of energy i.e. ${E_A}<{E_B}<{E_C}$ . If${\lambda_1},{\lambda_2},{\lambda_3}$ are wave lengths of radiations corresponding to transitions C to B, B to A and C to A respectively, which of the following relations is correct -
neet
physics
past papers
2005
46
asked
Jul 24, 2018
by
pady_1
1
answer
If a vector $2\hat{i} + 3\hat{j}+8\hat{k}$ is perpendicular to the vector 4j- 4i + ak , then the value of ?
neet
physics
past papers
2005
40
asked
Jul 24, 2018
by
pady_1
1
answer
Which of the following circular rods, (given radius r and length l) each made of the same energy material and whose ends are maintained at the same temperature will conduct most heat
neet
physics
past papers
2005
39
asked
Jul 24, 2018
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pady_1
1
answer
Carbon, Silicon and Germanium atoms have four valence electrons each. Their valence and conduction bands are separated by energy band gaps represented by $(E_g){_c}$ $(E_g)_Si$and $(E_g)_Ge$ respectively. Which one of the following relationships is true in their case .
neet
physics
past papers
2005
38
asked
Jul 24, 2018
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pady_1
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The total energy of an electron in the first excit state of hydrogen atom is about –3.4eV. Its kinetic energy in this state is-
neet
physics
past papers
2005
37
asked
Jul 24, 2018
by
pady_1
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answer
The circular motion of a particle with constant speed is-
neet
physics
past papers
2005
36
asked
Jul 24, 2018
by
pady_1
2
answers
Choose the only false statement from the following-
neet
physics
past papers
2005
35
asked
Jul 24, 2018
by
pady_1
1
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Copper has face centered cubic (fcc) lattice with interatomic spacing equal to 2.54Å. The value of lattice constant for this lattice is-
neet
physics
past papers
2005
29
asked
Jul 24, 2018
by
pady_1
1
answer
In any fission process the ratio mass of fission products is- mass of parent nucleus
neet
physics
past papers
2005
28
asked
Jul 24, 2018
by
pady_1
1
answer
The moment of inertia of a uniform circular disc o radius 'R' and mass 'M' about an axis passing from the edge of the disc and normal to the disc is-
neet
physics
past papers
2005
27
asked
Jul 24, 2018
by
pady_1
2
answers
For the network shown in the figure the value of the current i is –
neet
physics
past papers
2005
26
asked
Jul 24, 2018
by
pady_1
1
answer
For a satellite moving in an orbit around the earth, the ratio of kinetic energy to potential energy is -
neet
physics
past papers
2005
25
asked
Jul 24, 2018
by
pady_1
1
answer
If ${\lambda v}>{\lambda x}>{\lambda m}$ represent the wavelengths of visible light, x-rays and microwaves respectively, then-
neet
physics
past papers
2005
24
asked
Jul 24, 2018
by
pady_1
1
answer
The ratio of the dimension of Planck's constant and that of the moment of inertia is the dimension of :
neet
physics
past papers
2005
17
asked
Jul 24, 2018
by
pady_1
2
answers
The temperature of inversion of a thermocouple is $620^{\circ}C$ and the neutral temperature is $300^{\circ}C$. What is the temperature of cold junction :
neet
physics
past papers
2005
16
asked
Jul 24, 2018
by
pady_1
1
answer
A particle executing simple harmonic motion of amplitude 5 cm has maximum speed of 31.4 cm/s. The frequency of its oscillation is :
neet
physics
past papers
2005
15
asked
Jul 24, 2018
by
pady_1
1
answer
When a wire of uniform cross-section a, length l and resistance R is bent into a complete circle, resistance between any two of diametrically opposite points will be -
neet
physics
past papers
2005
14
asked
Jul 24, 2018
by
pady_1
1
answer
Two vibrating tuning forks produce progressive waves given by $y_1=4\;sin\; 500\; \pi t$ and $y_2=2\;sin\;506\; \pi t$ Number of beats produced per minute is
neet
physics
past papers
2005
13
asked
Jul 24, 2018
by
pady_1
1
answer
If the magnetic dipole moment of an atom of diamagnetic material, paramagnetic material and ferromagnetic material are denoted by $\mu_d, \mu_p$ and $\mu_f$ respectively, then
neet
physics
past papers
2005
12
asked
Jul 24, 2018
by
pady_1
0
answers
If the magnetic dipole moment of an atom of diamagnetic material, paramagnetic material and ferromagnetic material are denoted by $\mu_d$, $\mu_p$ and $\mu_f$ respectively, then
neet
physics
past papers
2005
11
asked
Jul 24, 2018
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pady_1
0
answers
Two batteries, one of emf 18 volts and internal resistance $2\Omega$ and the other of emf 12 volt and internal resistance $1\Omega$, are connected as shown. The voltmeter V will record a reading of.
neet
physics
past papers
2005
6
asked
Jul 24, 2018
by
pady_1
1
answer
Which of the following processes is reversible
neet
physics
past papers
2005
5
asked
Jul 24, 2018
by
pady_1
1
answer
In a circuit L, C and R are connected in series with an alternating voltage source of frequency f. The current leads the voltage by 45º. The value of C is -
neet
physics
past papers
2005
4
asked
Jul 24, 2018
by
pady_1
1
answer
In the reaction$^{2}_{1}H + ^{3}_{1}H\rightarrow^{4}_{2}He +^{1}_{0}n$. If the binding energies of$^{2}_{1}H$ ,$^{3}_{1}H$ and $^{4}_{2}He$ are respectively a, b and c (in MeV), then the energy (in MeV) released in this reaction is
neet
physics
past papers
2005
3
asked
Jul 24, 2018
by
pady_1
1
answer
Zener diode is used for:-
neet
physics
past papers
2005
2
asked
Jul 24, 2018
by
pady_1
1
answer
The work functions for metals A, B and C are respectively 1.92 eV, 2.0 eV and 5eV. According to Einstein's equation, the metals which will emit photo electrons for a radiation of wavelength $4100 A^{\circ}$ is/are-
neet
physics
past papers
2005
1
asked
Jul 24, 2018
by
pady_1
1
answer
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