JEE Main questions
34495 published questions with worked solutions.
- The correct statement with respect to dinitrogen is -
- A solution of two components containing n_1 moles of the 1st component n_2 moles of the 2nd component is prepared. M_1 and M_2...
- For the reaction – Fe_2N(s)+ 3 2 H_2(g) 2Fe(s)+NH_3(g)
- Among the sulphates of alkaline earth metals, the solubilities of BeSO_4 and MgSO_4 in water, respectively, are -Not in JEE Main or NEET syllabus
- The set that contains atomic numbers of only transition elements is :
- The lanthanoid that does NOT show +4 oxidation state is
- The variation of equilibrium constant with temperature is given below : Temperature T_1 = 25ºC, Equilibrium Constant K_1 = 100...
- Which of the following compounds shows geometrical isomerism :
- Potassium chlorate is prepared by the electrolysis of KCl in basic solution 6OH^-+Cl^- ClO_3^-+3H_2O+6e^- . If only 60% of the...
- The elevation of boiling point of 0.10 m aqueous CrCl_3.xNH_3 solution is two times that of 0.05 m aqueous CaCl_2 solution. The...
- The number of Cl=O bonds in perchloric acid is, "_________"
- _ x 1 ( _0^ (x-1)^2 t (t^2)dt (x-1) (x-1) )
- Let m and M be respectively the minimum and maximum values of vmatrix ^2x&1+ ^2x& 2x 1+ ^2x& ^2x& 2x ^2x& ^2x&1+ 2x vmatrix ....
- The region represented by z=x+iy C:|z|-Re(z) 1 is also given by the inequality :
- Which of the following points lies on the locus of the foot of perpendicular drawn upon any tangent to the ellipse, x^2 4 + y^2 2...
- The area (in sq. units) of the region A (x, y) : |x| + |y| < 1, 2y^2>|x| is :
- The position of a moving car at time t is given by f(t)=at^2+bt+c, t > 0, where a, b and c are real numbers greater than 1. Then...
- The general solution of the differential equation 1+x^2+y^2+x^2y^2 +xy dy dx =0 is (where C is a constant of integration) :
- Out of 11 consecutive natural numbers if three numbers are selected at random (without repetition), then the probability that...
- If and be two roots of the equation x^2-64x+256=0. Then the value of ( ^3 ^5 )^ 1/8 + ( ^3 ^5 )^ 1/8 is -