Practice questions
88551 published questions with worked solutions.
- Two bodies of the same mass are moving with the same speed, but in different directions in a plane. They have a completely...
- Initially a gas of diatomic molecules is contained in a cylinder of volume V_1 at a pressure P_1 and temperature 250 K. Assuming...
- Suppose that intensity of a laser is ( 315 ) W/ m ^2. The rms electric field, in units of V/m associated with this source is...
- The density of a solid metal sphere is determined by measuring its mass and its diameter. The maximum error in the density of the...
- Consider the Assertion and Reason given below. Assertion (A) : Ethane polymerized in the presence of Ziegler Natta catalyst at...Not in JEE Main or NEET syllabus
- Arrange the following solution in the decreasing order pf pOH : (A) 0.01 M HCl (B) 0.01 M NaOH (C) 0.01 M CH_3COONa (D) 0.01 M...
- 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 :