Fill in the following blanks with suitable words : (a) If the magnification has a plus sign, then image is ___ and ___ (b) If the magnification has a minus sign, then the image is ___ and ___.
Fill in the following blanks with suitable words :
(a) Acids have a pH ___ than 7.
(b) Alkalis have a pH ___ than 7.
(c) Neutral substances have a pH of __
(d) The more acidic a solution, the ___ the pH.
(e) The more alkaline a solution, the ___ the pH.