Which of the following is an acidic salt?

Lenz's law is a consequence of the law of conservation of:

If the normal to the curve $y=f(x)$ at the point $(3,4)$ makes an angle of $\frac{3 \pi}{4}$ with the positive $X$-axis,then the value of $f^{\prime}(3)$ is

Filiform apparatus is a characteristic feature of .......

An aluminium (resistivity $\rho = 2.2 \times 10^{-8} \Omega \cdot m$) wire of a diameter $1.4 \text{ mm}$ is used to make a $4 \Omega$ resistor. The length of the wire is: (in $\text{ m}$)

The motion of a particle represented by $y = \sin \omega t - \cos \omega t$ is