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JEE Main

A mixture containing the following four compounds is extracted with 1 M HCl. The compound that goes to aqueous layer is :

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The integral $∫(x_{4}−1)_{41}dx $ equal:

A circular loop of radius 0.3 cm lies parallel to a much bigger circular loop of radius 20 cm. The centre of the small loop is on the axis of the bigger loop. The distance between their centres is 15 cm. If a current of 2.0 A flows through the smaller loop, then the flux linked with bigger loop is

The number of geometric isomers that can exist for square planar $[Pt(Cl)(py)(NH_{3})(NH_{2}OH)]_{+}$ is (py = pyridine):

Let $α$and $β$be the roots of equation $x_{2}−6x−2=0$. If $a_{n}=α_{n}−β_{n},forn≥1$, then the value of $2a_{9}a_{10}−2a_{8} $is equal to:

Let $T_{n}$be the number of all possible triangles formed by joining vertices of an n-sided regular polygon. If $T_{n+1}−T_{n}=10$, then the value of n is

The following reaction is performed at 298 K. $2NO(g)+O_{2}(g)⇔2NO_{2}(g)$ The standard free energy of formation of $NO(g)$ is 86.6 kJ/mol at 298 K. What is the standard free energy of formation of $NO_{2}(g)$ at 298 K ? $(K_{P}=1.6×10_{12})$

If f and g are differentiable functions in [0, 1] satisfying \displaystyle{f{{\left({0}\right)}}}\text{}=\text{}{2}\text{}={g}

The I - V characteristic of an LED is