Which of the following halides is most acidic?

In a compound microscope,the focal length of the objective lens is $f_o = 1.2 \ cm$ and the focal length of the eyepiece is $f_e = 3.0 \ cm$. When the object is kept at $u_o = -1.25 \ cm$ in front of the objective,the final image is formed at infinity. The magnifying power of the compound microscope is:

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

Which of the following statements is $NOT$ correct for potash alum?

Which of the following is not a type of cancer?

According to Hooke's law of elasticity,if stress is increased,the ratio of stress to strain