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*Image* on dehydration with conc. {H_2}S{O_4} , forms predominantly ...

Among the following, electron deficient compound is ...

How will the compounds solubility in water compare with the solubility of Calcium Bromide of our Universe ? ...

Dehydration of the following in increasing order is *Image* ...

Figure (i) shows a conducting loop being pulled out of a magnetic field with a speed v. Which of the four plots shows in figure (ii) may represent the power delivered by the pulling agent as a function of the speed v *Image* ...

If frac{{c + i}}{{c - i}} = a + ib, where a, b, c are real, then {a^2} + {b^2} = ...

A is twice a good workman as B and together they finish a piece of job in 18 days. In how many days will A alone finish the job? ...

mathop {lim }limits_{x o 0} left( {frac{{{e^x} - 1}}{x}} ight) = ...

If a{{x}^{2}}+bx+c=0, then x ...

A car moves along a horizontal circular road of radius r with velocity v. The coefficient of friction between the wheels and the road is mu . Which of the following statements is not true ...

If sin heta = frac{{ - 4}}{5} and heta lies in the third quadrant, then cos frac{ heta }{2} = ...

A right angled triangle ABC having right angle at C.Ca=b and CB=a moves such that the angular points A and B slide along x-axis and y-axis respectively.Find the locus of C. ...

A fish rising vertically up towards the surface of water with speed 3 ms–1 observes a bird diving vertically down towards it with speed 9 ms–1. The actual velocity of bird is *Image* ...

A short linear object of length l lies along the axis of a concave mirror of focal length f at a distance u form the pole of the mirror. The size of the image is approximately equal to ...

n moles of an ideal gas is supplied heat such that its temperature changes from T1toT2 and pressure from P1 to P2.Then the change in entropy of the system ΔS is?? ...

A gas is enclosed in a vessel of volume V at a pressure P.It is being pumped out of a vessel by means of a piston pump with stroke volume v.Find the pressure of the gas in the vessel after n strokes. ...

A gas is enclosed in a vessel of volume V at a pressure P.It is being pumped out of a vessel by means of a piston pump with stroke volume v.Find the pressure of the gas in the vessel after n strokes. ...

The ratio of adiabatic Bulk modulus to the isothermal bulk modulus of a perfect gas with f degrees of freedom will be ? ...

A column of liquid is concentrated i a horizontal tube which is open at both ends.The change in temperature doers not alter the length of this liquid column in the tube.If α be the coeff of linear expansion of the material o ...

JEE Main[7th April,2013] 222 Days left ...

why there is always a phase change of pie whenever reflection takes place? ...

The product (s) obtained via oxymercuration (HgS{{O}_{4}}+{{H}_{2}}S{{O}_{4}}) of 1-butyne would be ...

A point object O is placed between two plan mirrors as shown is fig. The distance of the first three images formed by mirror from it are *Image* ...

Two plane mirrors A and B are aligned parallel to each other, as shown in the figure. A light ray is incident at an angle of 30o at a point just inside one end of A. The plane of incidence coincides with the plane of the figu ...

1) Is work done by a force only when force and displacement are parallel to each other? 2) A man is lifting a body vertically upward? What are the forces acting on the body? What is the sign of work done by these forces? ...

The molecular formula of diphenyl methane, *Image* is C_{13}H_{12} . How many structural isomers are possible when one of the hydrogen is replaced by a chlorine atom ...

Find the sum of the series 12-22+32-42+52-62+..........+992-1002 ...

A block of mass 2 kg is to be lifted with constant velocity by applying force F down the rope that passes over pulley having coefficient of friction μ.Find the value of the pull required. Ans is 2geπμ ...

IF x + y = 12, the maximum value of the product of xy is ...

The following series is in √2, 2, 2√2, 4, 4√2....... ...