Fill in the blanks (a) The most commonly used natural indicator is__________________________and is extracted from______________________________ (b) Aqueous solution of baking soda is bitter in taste and feels soapy on touching because it contains______________________________ (c) __________________are used to test whether a substance is acidic or basic in nature. (d) ____________________change their colour when added to a solution containing an acidic or basic substance. (e) Lemon juice, orange juice taste sour because they contain_______________________ (f) The solutions which do not change the colour of either blue or red litmus are called ____________________solutions. (g) Turmeric and litmus are _________ acid-base indicators.. (h) In neutralization reaction heat is always___________________________________. (i) Salts may be____________________________or_____________________in nature. (j) Chemically milk of magnesia is______________and baking soda is_______________ (k) China rose indicator turns__________________________solution to dark pink and______________________solution to green (l) The correct way of making a solution of acid in water is to _______
Answers
Answer:
a . litmus from lichens
b.basic substances
c . indicators
d. indicators
e. acids
f. neutral solutions
g. natural
h. evolved
i . acidic, basic.
j. basic
k. acidic
Answer:
a . litmus from lichens
b . basic substances
c . indicators
d . indicators
e . acids
f . neutral solutions
g . natural
h . evolved
i . acidic, basic.
j . basic
k . acidic
Explanation:
a . litmus from lichens
b . basic substances
c . indicators
d . indicators
e . acids
f . neutral solutions
g . natural
h . evolved
i . acidic, basic.
j . basic
k . acidic
Litmus is a water-soluble combination of several lichen-derived colours. It is frequently absorbed into filter paper to make one of the earliest kinds of pH indicator, which is used to assess the acidity of materials.
Anything less than 7.0 is acidic, while anything greater than 7.0 is alkaline, or basic. The pH scale ranges from 0 (extremely acidic) to 14 (very basic/alkaline), with the pH values of typical compounds included.
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