Recent questions tagged neet

IUPAC Name of some compounds are given. Which one is incorrect -

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The correct sequence of increasing covalent character is represented by -

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Aniline in a set of reactions yielded a product

The structure of the product D would be -

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Which of the following would have a permanent dipole moment -

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Products of the following reaction :is are -

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Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction -

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Which one of the following compounds is most acidic :-

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Electrolytic reduction of nitrobenzene in weakly acidic medium gives :-

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The main reason for larger number of oxidation states exhibited by the actinoids than the corresponding lanthanoids, is :-

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Which of the following molecules has trigonal planer geometry ;

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The correct order in which the O-O bond length increases in the following is :-

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At $25^oC$, the dissociation constant of a base, BOH, is $1.0\times10^{-12}$ The concentration of hydroxyl ions in 0.01M aqueous solution of the base would be :-

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Which functional group participates in disulphide bond formation in proteins :-

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Which one of the following pair represents stereo isomerism :-

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The surface tension of which of the following liquid is maximum :-

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The energy of second Bohr orbit of the hydrogen atom is $–328\; g\;mol^{-1}$; hence the energy of fourth Bohr orbit would be :-

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A solution of urea (mol. mass $56\;g\;mol^{-1}$) boils at $100.18^{\circ}C$ at the atomospheric pressure. If $K_f$ and $K_b$ for water are $1.86$ and $0.512\;K g\;mol^{-1}$ respectively , the above solution will freeze at :-

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The absolute enthalpy of neutralisation of the reaction : $MgO(s)+2HCl(aq)\to MgCl_2(aq)+H_2O(l)$ will be:

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Which amongst the following is the most stable carbocation :-

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In a face –centered cubic lattice, a unit cell is shared equally by how many unit cells :-

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A reaction occurs spontaneously if -

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The aqueous solution containing which one of the following ions will be colourless -

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Which one of the following forms micelles in aqueous solution above certain concentration -

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The best method for the separation of naphthalene and benzoic acid from their mixture is -

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Which one of the following oxides is expected to exhibit paramagnetic behaviour -

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Which one of the following is an inner orbital complex as well as diamagnetic in behaviour -

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Application of a forward bias to a p-n junction -

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A force F acting on an object varies with distance x as shown here. The force is in N and x in m. The work done by the force in moving the object from x = 0 to x = 6 m is

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A point source emits sound equally in all directions in a non-absorbind medium. Two ed points P and Q are at distance of 2m and 3m respectively from the source. The ratio of the intensities of the waves at P and Q is -

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If the angle between the vector $\overrightarrow{A} \overrightarrow{B}$ is $\theta$the value of the product $(\overrightarrow B \times \overrightarrow A).\overrightarrow A)$ is equal to -

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Imagine a new planet having the same density as that of earth but it is 3 times bigger than the earth in size. If the acceleration due to gravity on the surface of earth is g and that on the surface of the new planet is g', then -

asked Jul 24, 2018 by pady_1

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A stone tied to the end of a string of 1 m long is whirled in a horizontal circle with a constant speed. If the stone makes 22 revolution in 44 seconds, what is the magnitude and direction of acceleration of the stone-

asked Jul 24, 2018 by pady_1

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A drum of radius R and mass M, rolls down without slipping along an inclined plane of angle ?. The frictional force-

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A network of four capacitors of capacity equal to $C_1=C,C_2=2C,C_3=3C,C_4=4C$ are conducted to a battery as shown in the figure. The ratio of the charges on $C_2$ and $C_4$ is

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The angular resolution of a 10cm diameter telescope at a wavelength of 5000Å is of the order of -

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Fission of nuclei is possible because the binding energy per nucleon in them-

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A coil in the shape of an equilateral triangle of side l is suspended between the pole pieces of a r permanent magnet such that B is in place of the coil. If due to a current i in the triangle a torque ? acts on it, the side l of the triangle is-

asked Jul 24, 2018 by pady_1

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An ideal gas heat engine operates in Carnot cycle between $227^{\circ}C$ and $127^{\circ}C$. It absorbs $6\times10 ^4$ cals of heat at higher temperature. Amount of heat converted to work is:-

asked Jul 24, 2018 by pady_1

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As a result of change in the magnetic flux linked to the closed loop shown in the figure, an e.m.f. V volt is induced in the loop. The work done (joules) in taking a charge Q coulomb once along the loop is

asked Jul 24, 2018 by pady_1

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A photosensitive metallic surface has work function, $hv_0$. If photons of energy $2hv_o$ fall on this surface, the electrons come out with a maximum velocity of $4\times10^6$ m/s. When the photon energy is increased to $5hv_0$, then maximum velocity of photo electrons will be

asked Jul 24, 2018 by pady_1

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The nuclei of which one of the following pairs of nuclei are isotones :

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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

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As per this diagram a point charge +q is placed at the origin O. Work done in taking another point charge â€“Q from the point A coordinates (0, a) to another point B coordinates (a, 0) along the straight path AB is

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A 5-ampere fuse wire can withstand a maximum power of 1 watt in the circuit. The resistance of the fuse wire is :

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An electron moves in a circular orbit with a uniform speed v. It produces a magnetic field B at the centre of the circle. The radius of the circle is proportional to :

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Two charges $q_1$ and $q_2$ are placed 30 cm apart, as shown in the figure. A third charge $q_3$ is moved along the arc of a circle of radius 40 cm from C to D. The change in the potential energy of the system is $\frac{q_3}{4\pi \epsilon_0}k$ , where k is –

asked Jul 24, 2018 by pady_1

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Which of the following pairs, is correctly matched -

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The ability of the Venus Flytrap to capture insects is due to -

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Potometer works on the principle of -

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An important step in the manufacture of pulp for paper industry from the woody tissues of plants is the -

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