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QJEE-MAIN 2019
If a variable line, $3 x+4 y-\lambda=0$ is such that the two circles $x^2+y^2-2 x-2 y+1=0$ and $x^2+y^2-18 x-2 y+78=0$ are on its opposite sides,...
JEE MainMathematicsEasy
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QJEE MAIN_2019_
During the change of $\mathrm{O}_2$ to $\mathrm{O}_2^{-}$, the incoming electron goes to the orbital:
JEE MainChemistryMedium
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QJEE MAIN 2019
The increasing order of the $\mathrm{pK}_{\mathrm{b}}$ of the following compound is :
JEE MainChemistryMedium
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QJEE-MAIN 2019
In a random experiment, a fair die is rolled until two fours are obtained in succession. The probability that the experiment will end in the...
JEE MainMathematicsEasy
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QJEE MAIN 2019
Let the equations of two sides of a triangle be 3x – 2y + 6 = 0 and 4x + 5y – 20 = 0....
JEE MainMathematicsHard
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QJEE-MAIN 2019
Consider three boxes, each containing 10 balls labelled 1, 2, ...,10. Suppose one ball is randomly drawn from each of the boxes. Denote by ni,...
JEE MainMathematicsEasy
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QJEE MAIN_2019_
The increasing order of the reactivity of the following compounds towards electrophilic aromatic substitution reactions is :
JEE MainChemistryMedium
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QJEE MAIN 2019
The metal that gives hydrogen gas upon treatment with both acid as well as base is
JEE MainChemistryMedium
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QJEE MAIN 2019
The perpendicular distance from the origin to the plane containing the two lines,
$\frac{x+2}{3}=\frac{y-2}{5}=\frac{z+5}{7}$ and $\frac{x-1}{1}=\frac{y-4}{4}=\frac{z+4}{7}$ is
JEE MainMathematicsEasy
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QJEE MAIN 2019
An urn contains 5 red and 2 green balls. A ball is drawn at random from the urn. If the drawn ball is green, then...
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