IS_S2_acid and alkali

The taste of acids are

• salty

• sour

• slippery

• bitter

The taste of alkalis are

• salty

• sour

• slippery

• bitter

Which of the following does not contain acid?

• lotion

• shampoo

• toilet cleaner

• kitchen cleaner

If our skin comes into contact with an acid, we should wash the affected area with _______ immediately.

• less acidic solution

• alkali

• water

• solution that has lower pH value

Table salt solution is

• acidic

• alkaline

• neutral

Which of the following can be used as acid-alkali indicator?

(1) red cabbage leaf

(2) red rose petal

(3) grape skin

• (1) only

• (1) and (2) only

• (1) and (3) only

• all of them

When we add a drop of alkali to a piece of red litmus paper, its colour

• remains red

• turns yellow

• turns blue

• turns green

The diagram shows a _______ .

• PH scale

• Ph scale

• pH scale

• ph scale

The pH value for a neutral solution is

• 0

• lower than 7

• 7

• higher than 7

Which of the following cannot be used to find out the pH of a solution?

• universal indicator

• litmus solution

• pH paper

• pH meter