Acids and Alkalis

pH of Lemon

• less than 7

• more than 7

• equal to 7

pH of bleach

• less than 7

• more than 7

• equal to 7

Testing vinegar using litmus indicator, the colour turns _______

• red

• blue

• purple

Testing ammonia solution using litmus solution, the colour turns ________.

• blue

• red

• purple

Colour of phenolphthalein in alkaline solution

• red

• purple

• Yellow

• Pink

Colour of methyl orange in acidic solution

• red

• orange

• yellow

• pink

Neutralisation can be carried out using the _________ method.

• titration

• centrifugation

• distillation

• purification

Which of the following can tells us the pH value of a solution?

• litmus solution

• Universal indicator

• methyl orange

• phenolphthalein

Which of the following is acidic?

• coffee

• baking soda

• toothpaste

• detergent

Which of the following is alkali?

• tomato

• milk

• stomach tablet

• lemon