Show the formation of Calcium chloride (`CaCl_2`) by the transfer of electrons.

Show the formation of Aluminium oxide ( Al_2O_3 ) by the transfer of electrons.

The treatment of alkyl chlorides with aqueous KOH leads to the formation of alcohols but in the presence of alcoholic KOH, alkenes are major products. Explain.

An object is placed 50 cm from a lens produces a virtual image at a distance of 10 cm in front of the lens. Draw a diagram to show the formation of image and calculate the focal length of the lens

Show the formation of a p type semiconductor with diagram.

Show the formation of an image by a plane mirror with the help of a neat ray diagram.

Draw a ray diagram to show the formation of final image at least distance of distinct vision by a compound microscope.

Find the frequency of revolution of an electron in Bohr's 2nd orbit; if the radius and speed of electron in that orbit is 2.14×10^(−10) m and 1.09×10^6m/s respectively.

Draw a ray diagram to show the formation of final image by a compound microscope. Find an expression for magnification of an image formed by a compound microscope.