JEE Main questions
34495 published questions with worked solutions.
- A proton is moving undeflected in a region of crossed electric and magnetic fields at a constant speed of 2 10^5 ms^ -1 . When...
- A parallel plate capacitor of area A = 16 cm^2 and separation between the plates 10 cm, is charged by a DC current. Consider a...
- A tube of length 1m is filled completely with an ideal liquid of mass 2M, and closed at both ends. The tube is rotated uniformly...
- Arrange the following compounds in increasing order of their dipole moment : HBr, H_2S, NF_3 and CHCl_3
- The maximum covalency of a non-metallic group 15 element 'E' with weakest E–E bond is :
- The species which does not undergo disproportionation reaction is :
- Match List-I with List-II. List-I (Partial Derivatives): (A) ( G T )_P (B) ( H T )_P (C) ( G P )_T (D) ( U T )_V List-II...
- The correct order of the following complexes in terms of their crystal field stabilization energies is
- Density of 3 M NaCl solution is 1.25 g/mL. The molality of the solution is :
- The molar solubility(s) of zirconium phosphate with molecular formula (Zr^ 4+ )_3(PO_4^ 3- )_4 is given by relation
- Given below are two statements : Statement (I) : An element in the extreme left of the periodic table forms acidic oxides....
- Given below are two statements : Statement (I) : A spectral line will be observed for a 2p_x 2p_y transition. Statement (II) :...
- Given below are two statement : Statement (I) : Nitrogen, sulphur, halogen and phosphorus present in an organic compound are...
- Identify the homoleptic complex(es) that is/are low spin. (A) [Fe(CN)_5NO]^ 2- (B) [CoF_6]^ 3- (C) [Fe(CN)_6]^ 4- (D)...
- Given below are two statements : Statement (I) : Corrosion is an electrochemical phenomenon in which pure metal acts as an anode...
- The alkane from below having two secondary hydrogens is :
- Niobium (Nb) and ruthenium (Ru) have "x" and "y" number of electrons in their respective 4d orbitals. The value of x + y is...
- Consider the following cases of standard enthalpy of reaction ( H_f^o in kJ mol^ -1 ) C_2H_6(g) + 7 2 O_2(g) 2CO_2(g) + 3H_2O( )...
- 20 mL of 2 M NaOH solution is added to 400 mL of 0.5 M NaOH solution. The final concentration of the solution is ______ 10^ -2 M....
- If in the expansion of (1 + x)^p (1 – x)^q, the coefficients of x and x^2 are 1 and –2, respectively, then p^2 + q^2 is equal to :