JEE Main questions
34495 published questions with worked solutions.
- A + 2 B AB2. 36.0 g of 'A' (Molar mass : 60 g mol⁻¹) and 56.0 g of 'B' (Molar mass : 80 g mol⁻¹) are allowed to react. Which of...
- Given below are two statements : Statement-I: The first ionization enthalpy of Cr is lower than that of Mn. Statement-II : The...
- Correct statements regarding Arrhenius equation among the following are : (A) Factor e^ -Ea/RT corresponds to fraction of...
- Given below are two statements : Statement-I : Element 'X' and 'Y' are the most and least electronegative elements, respectively...
- Match List-I with List-II. List-I (Reaction of glucose with): (A) Hydroxylamine (B) Br_2 water (C) Excess acetic anhydride (D)...
- Among H_2S, H_2O, NF_3, NH_3 and CHCl_3, identify the molecule X with lowest dipole moment value. The number of lone pairs of...
- Given below are two statements : Statement-I : C<O<N<F is the correct order in terms of first ionization enthalpy values....
- Which of the following mixture gives a buffer solution with pH=9.25? Given : pK_b(NH_4OH)=4.75
- The energy of first (lowest) Balmer line of H atom is x J. The energy (in J) of second Balmer line of H atom is :
- Identify the correct statements : A. Hydrated salts can be used as primary standard. B. Primary standard should not undergo any...
- [Ni(PPh_3)_2Cl_2] is a paramagnetic complex. Identify the INCORRECT statements about this complex. A. The complex exhibits...
- The compound A, C_8H_8O_2 reacts with acetophenone to form a single product via cross Aldol condensation. The compound A on...
- If the enthalpy of sublimation of Li is 155 kJ mol⁻¹, enthalpy of dissociation of F_2 is 150 kJ mol⁻¹, ionization enthalpy of Li...
- The mass of benzanilide obtained from the benzoylation reaction of 5.8 g of aniline, if yield of product is 82%, is ____ g...
- Consider A k_1 B and C k_2 D are two reactions. If the rate constant (k_1) of the A B reaction can be expressed by the following...
- Let the domain of the function f(x) = _3 _5 _7(9x - x^2 - 13) be the interval (m, n). Let the hyperbola x^2 a^2 - y^2 b^2 = 1...
- Let f(x) = (2-x^2) e^x ( 1+x )(1-x)^ 3/2 dx. If f(0) = 0, then f ( 1 2 ) is equal to :
- Let a = - i + j +2 k , b = i - j -3 k , c = a b and d = c a . Then ( a - b ) d is equal to :
- A rectangle is formed by the lines x=0, y=0, x=3 and y=4. Let the line L be perpendicular to 3x+y+6=0 and divide the area of the...
- Let the line y-x=1 intersect the ellipse x^2 2 + y^2 1 =1 at the points A and B. Then the angle made by the line segment AB at...