List of top Questions asked in JEE Main

Let \(C\) be the centre of the circle \(x^2+y^2-x+2 y=\frac{11}{4}\) and \(P\) be a point on the circle A line passes through the point \(C\), makes an angle of \(\frac{\pi}{4}\) with the line CP and intersects the circle at the points \(Q\) and \(R\) Then the area of the triangle \(PQR\) (in unit \({ }^2\)) is :
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Experimental reaction of $CH _3 Cl$ with aniline and anhydrous $AlCl _3$ does not give $o$ and p-methylaniline.
Reason (R) : The $- NH _2$ group of aniline becomes deactivating because of salt formation with anhydrous $AlCl _3$ and hence yields $m$-methyl aniline as the product.
In the light of the above statements, choose the most appropriate answer from the options given below :
From the top of 30 m tower AB the angle of depression to another tower’s QP base and top is 60º and 30º respectively. Another point C lies on tower AB such that CQ is parallel to BP (where B and P are the base of towers). Then the area of BCQP is?
The radius of Na atom forming bcc lattice (in Å)?
Ba+2 cannot be precipitated as?
The correct increasing order of the magnitude of standard enthalpies of formation for group-1 halides is?
A naturally occurring amino acid that contains only one basic functional group.
The momentum of an electron revolving in \(n ^{\text {th }}\) orbit is given by : (Symbols have their usual meanings)
The ratio of the velocities of CH4 and O2 molecules, so that they are associated with de-Broglie waves of equal wavelength is:
A car is moving with a uniform speed of 72 km/h. After applying brakes it stops after traveling 100 m distance. If its mass along with the passengers is 1000 kg, then the value of force due to the application of brakes will be in newton:
The equation of motion of system is given by mx¨+cx˙+kx=0. The damped vibration, ωd can be written as:
If tan⁡3θ−1tan⁡3θ+1=3, then the general value of θ is: