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QJEE MAIN 2025
Which of the following properties will change when system containing solution 1 will become solution 2?
JEE MainChemistryMedium
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QJEE MAIN 2025
In a reaction $A + B \to C$, initial concentrations of A and B are related as ${[A]_0} = 8{[B]_0}$. The half lives of A...
JEE MainChemistryMedium
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QJEE MAIN 2025
Which of the following phenomena can not be explained by wave theory of light ?
JEE MainPhysicsEasy
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QJEE MAIN 2025
The correct order of the complexes ${\left[ {{\rm{Co}}{{\left( {{\rm{N}}{{\rm{H}}_3}} \right)}_5}\left( {{{\rm{H}}_2}{\rm{O}}} \right)} \right]^{3 + }}({\rm{A}}),{\left[ {{\rm{Co}}{{\left( {{\rm{N}}{{\rm{H}}_3}} \right)}_6}} \right]^{3 + }}({\rm{B}}),{\left[ {{\rm{Co}}{{({\rm{CN}})}_6}} \right]^{3 - }}({\rm{C}})$...
JEE MainChemistryMedium
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QJEE MAIN 2025
Among ${10^{ - 9}}\;{\rm{g}}$ (each) of the following elements, which one will have the highest number of atoms?
Element: ${\rm{Pb}},{\rm{Po}},{\rm{Pr}}$ and Pt
JEE MainChemistryHard
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QJEE MAIN 2025
Which of the following postulate of Bohr's model of hydrogen atom is not in agreement with quantum mechanical model of an atom?
JEE MainChemistryEasy
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QJEE MAIN 2025
2 moles each of ethylene glycol and glucose are dissolved in 500 g of water. The boiling point of the resulting solution is: (Given :...
JEE MainChemistryEasy
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QJEE MAIN 2025
The frequency of revolution of the electron in Bohr's orbit varies with $n$, the principal quantum number as
JEE MainPhysicsHard
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QJEE MAIN 2025
Which of the following statements are correct? A. The process of adding an electron to a neutral gaseous atom is always exothermic. B. The process...
JEE MainChemistryEasy
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QJEE MAIN 2025
In the circuit shown here, assuming threshold voltage of diode is negligibly small, then voltage $V_{A B}$ is correctly represented by :
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