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It advisable to wipe off any water on the microscope stage during carrying out microscopic procedure so as;To prevent refraction of lightTo prevent wetting the microscope slide
It is advisable to melt ice directly using an electric heating coil because;Melting water is a poor conductor of heat so local heating could rise the temperature slightly.
You should know that if you bail someone with your payslip and that person fails to appear in court as scheduled then you will have to pay the bail amount and fees that may be used to locate him/her. This means deduction of your salary. Therefore, if you are prepared to lose your salary just in case the worst happens the go ahead and bail him/her, if not then do not.
Reason why radioactive disintegration is different from ordinary chemical changes is;Chemical reaction involves electrons while radio activity involves nuclear reaction ie neutron and proton. Or in chemical reaction no new element if formed while in radioactivity new element is formed.
When Aluminium chloride is dissolved in water the resulting solution has a pH of 3 this is because aluminium chloride hydrolyses in water to form hydrochloric acid which is strongly acidic.