Recent questions tagged neet

When phenol is treated with $CHCl_3$ and $NaOH$, the product formed is :-

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Z in the above reaction sequence is : -

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Cellulose is polymer of : -

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In the above reaction product 'P' is :

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Monomer of
is

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Reactivity order of halides for dehydrohalogenation is : -

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In borax bead test which compound is formed

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Position of non polar & polar part in micelle : -

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$CuSO_4$ when reacts with KCN forms CuCN, which is insoluble in water. It is soluble in excess of KCN, due to formation of the following complex : -

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In the silver plating of copper, $K[Ag(CN)_2]$ is used instead of $AgNO_3$. The reason is : -

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The hypothetical complex chloro diaquatriammine cobalt (III) chloride can be represented as : -

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Atomic number of Cr and Fe are respectively 24 and 26, which of the following is paramagnetic with the spin of electron : -

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Which of the following shows maximum number of oxidation states :-

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In $NO_3^-$ ion number of bond pair and lone pair of electrons on nitrogen atom are : -

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A solution containing components A and B follows Raoult's law : -

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A solution contains non volatile solute of molecular mass $M_2$ . Which of the following can be used to calculate the molecular mass of solute in terms of osmotic pressure : - Note :$m_2$ → mass of solute V → Volume of solution p → Osmotic pressure

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Which has maximum molecules : -

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$2A \rightarrow B+C$ It would be a zero order reaction when : -

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$3A\rightarrow 2B$, rate of reaction $\frac{+d[B]}{dt}$ is equals to : -

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Heat of combustion $\bigtriangleup H^o$ for C(s), $H_2(g)$ and $CH_4 (g)$ are – 94, – 68 and – 213 Kcal/mol. then $\bigtriangleup H^o for C(s)+2H_2(g)\rightarrow CH_4(g)$ is : -

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In Hydrogen atom, energy of first excited state is – 3.4 eV. Then find out KE of same orbit of Hydrogen atom : -

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$_{92}U^{235}$, nucleus absorb a neutron and disintegrate in $_{54}Xe^{139}$, $_{38}Sr^{94}$ and x So, What will be the product x : -

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A deuteron is bombarded on $_{8}O^{16}$ nucleus then $\alpha$-particle is emitted then product nucleus is -

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A sample of radioactive element containing $4 \times10^{16}$ active nuclei. Half life of element is 10 days, then number of decayed nuclei after 30 days : -

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The velocity of electromagnetic wave is parallel to : -

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Two bar magnets having same geometry with magnetic moments M and 2M, are firstly placed in such a way that their similer poles are same side then its time period of osccilation is $T_1$ . Now the polarity of one of the magnet is reversed then time period of osccilation is $T_2$ , then : -

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A charge 'q' moves in a region where electric field and magnetic field both exist, then force on it is : -

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The magnetic field of given length of wire for single turn coil at its centre is 'B' then its value for two turns coil for the same wire is : -

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For a series LCR circuit the power loss at resonance is : -

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Specific resistance of a conductor increases with :

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For the given circuit of P-N junction diode which is correct : ->

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The given truth table is for which logic gate : -

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In a PN junction : -

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A whistle revolves in a circle with angular speed $\omega$ = 20 rad/sec using a string of length 50 cm. If the frequency of sound from the whistle is 385 Hz, then what is the minimum frequency heard by an observer which is far away from the centre : - ($V_{sound }= 340 m/s$)

asked Jul 23, 2018 by pady_1

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A block of mass 10 kg placed on rough horizontal surface having coefficient of friction µ = 0.5, if a horizontal force of 100 N acting on it nd then acceleration of the block will be : - ss

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A point P consider at contact point of a wheel on ground which rolls on ground without sliping then value of displacement of point P when wheel completes half of rotation (If radius of wheel is 1m) : -

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A body of mass m is placed on earth surface which is taken from earth surface to a height of h = 3R then change in gravitational potential energy is : -

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An object of mass 3kg is at rest. Now a force of F = 6t 2 i + 4t j is applied on the object then velocity of object at t = 3 second is : -

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Number of atom per unit cell in B.C.C. : -

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Unit of Stefan's constant is : -

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The efficiency of carnot engine is 50% and temperature of sink is 500K. If temperature of source is kept constant and its efficiency raised to 60%, then the required temperature of the sink will be : -

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A solid sphere of radius R is placed on smooth horizontal surface. A horizontal force 'F' is applied at height 'h' from the lowest point. For the maximum, acceleration of centre of mass, which is correct : -

asked Jul 23, 2018 by pady_1

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Which of the following is not the property of cathode rays : -

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What is the cause of “Green house effect” : -

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When ultraviolet rays incident on metal plate then photoelectric effect does not occur, it occurs by incidence of : -

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If particles are moving with same velocity, then De-Broglie wavelength is maximum for : -

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Which is having minimum wavelength : -

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A disc is rotating with angular speed $\omega$. If a child sits on it, what is conserved : -

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Displacement between max. P.E. position and max. K.E. position for a particle excuting simple harmonic motion is : -

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Which of the following reunites the exon segments after RNA splicing : -

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