The refluxing of $(CH_3)_2NCOCH_3$ with acid gives:

The displacement of a particle from its mean position (in metre) is given by $y = 0.2 \sin(10\pi t + 1.5\pi) \cos(10\pi t + 1.5\pi)$. The motion of the particle is:

What is the correct order of spin only magnetic moment (in $BM$) of $Mn^{2+}, Cr^{2+}$ and $V^{2+}$?

For a first order reaction at $27^{\circ} C$,the ratio of time required for $75 \%$ completion to $25 \%$ completion of reaction is

$\int \frac{dx}{a^2 \sin^2 x + b^2 \cos^2 x}$ is equal to

The reading of the ammeter in the circuit shown will be: (in $A$)