Practice questions
88551 published questions with worked solutions.
- A beam of electrons of energy E scatters from a target having atomic spacing of 1Å. The first maximum intensity occurs at = 60°....
- A compound microscope consists of an objective lens of focal length 1cm and an eye piece of focal length 5 cm with a separation...
- The equation that represents the water-gas shift reaction is :Not in JEE Main or NEET syllabus
- Consider the following reaction N_2O_4(g) 2NO_2(g) ; H^0 = +58 kJ For each of the following cases (a, b), the direction in which...
- Which of the following is not an essential amino acid :
- The structure of PCl_5 in the solid state is
- A flask contains a mixture of compounds A and B. Both compounds decompose by first-order kinetics. The half-lives for A and B are...
- If a person is suffering from the deficiency of nor-adrenaline, what kind of drug can be suggested ?Not in JEE Main or NEET syllabus
- The correct electronic configuration and spinonly magnetic moment (BM) of Gd^ 3+ (Z = 64), respectively, are
- In the sixth period, the orbitals that are filled are
- an oxidation-reduction reaction in which 3 electrons are transferred has a G^0 of 17.37 kJ mol ^ -1 at 25°C. The value of E_ cell...
- The minimum number of moles of O_2 required for complete combustion of 1 mole of propane and 2 moles of butane is ______.
- The total number of coordination sites in ethylene diamine tetraacetate ( EDTA^ 4- ) is _____.
- The number of chiral carbon(s) present in peptide, Ile-Arg-Pro, is _____.
- A soft drink was bottled with a partial pressure of CO_2 of 3 bar over the liquid at room temperature. The partial pressure of...
- If 3^ 2 2 -1 , 14 and 3^ 4-2 are the first three terms of an A.P. for some , then sixth term of this A.P. is :
- If the function f(x)= cases k_1(x- )^2-1, & x _2 x, & x> cases is twice differentiable, then the ordered pair (k_1,k_2) is equal...
- If the common tangent to the parabolas y^2=4x and x^2=4y also touches the circle, x^2+y^2=c^2, then c is equal to :
- If the volume of a parallelopiped, whose coterminus edges are given by the vectors a = i + j +n k , b =2 i +4 j -n k and c = i +n...
- If y = y(x) is the solution of the differential equation 5+e^x 2+y dy dx +e^x=0 satisfying y(0) = 1,then a value of y( _e13) is :