Which plant is litmus extracted from?
  • Ferns
  • Lichens
  • Moss
  • Algae
What color does red rose extract turn in a basic solution?
  • Red
  • Green
  • Yellow
  • Blue
Which of the following is NOT an acid?
  • Baking soda
  • Tamarind
  • Lemon
  • Vinegar
What is the effect of neutral substances on litmus?
  • Turns it green
  • No effect
  • Turns it blue
  • Turns it red
Which of the following is a property of alkalis?
  • Taste bitter
  • Insoluble in water
  • Have pH values of less than 7
  • Change blue litmus paper to red
Solution X has a pH value of . What colours are observed when universal solution and methyl orange are added to solution X separately?
  • Universal: Yellow; Methyl orange: Blue
  • Universal: Blue; Methyl orange: Yellow
  • Universal: Pink; Methyl orange: Yellow
  • Universal: Blue; Methyl orange: Pink
Malic acid powder cannot change the colour of blue litmus paper. What substance must be added to malic acid powder so that the colour of blue litmus paper can change?
  • Magnesium ribbon
  • Chloroform
  • Distilled water
  • Liquid benzene
Which of the following substances has the highest pH value?
  • Hydrochloric acid
  • Fresh milk
  • Salt solution
  • Soap solution
An acidic solution undergoes neutralisation when it reacts with substance Z. What is substance Z?
  • Phenolphthalein
  • Alkali
  • Salt solution
  • Distilled water
The following equation shows a neutralisation reaction: Acid + Alkali → X + Y. Which of the following is X and Y?
  • X: Salt; Y: Water
  • X: Salt; Y: Hydrogen
  • X: Water; Y: Hydrogen
  • X: Water; Y: Carbon dioxide
The diagram shows the arrangement of apparatus used to study the reaction between hydrochloric acid and sodium hydroxide solution with phenolphthalein indicator, including a burette delivering acid to a flask containing sodium hydroxide. What is the name of the method shown in the diagram?
  • Neutralisation
  • End point
  • Titration
  • Effervescence
The following information shows the properties of a liquid: Tastes bitter; Feels soapy; Has a pH value of 7.5. Which of the following is true about this liquid?
  • It is slightly acidic.
  • It turns red litmus paper to blue.
  • It turns blue litmus paper to red.
  • It can react with iron to form a mixture.
Which of the following substances have the pH values of 2, 7 and 9 respectively?
  • Baking soda; Distilled water; Lemon juice
  • Lemon juice; Baking soda; Distilled water
  • Distilled water; Lemon juice; Baking soda
  • Lemon juice; Distilled water; Baking soda
Anaqi dissolves the following substances in water separately: W Toothpaste, X Milk of magnesia, Y Vinegar, Z Shower cream. Which substances will turn the red litmus paper to blue?
  • W
  • X, Y
  • W, X, Z
  • W, Y, Z
Which of the following is the difference between acid and alkali?
  • Acid is bitter; Alkali is sour.
  • Acid changes moist red litmus paper to blue; Alkali changes moist blue litmus paper to red.
  • Acid reacts with metals to release hydrogen gas; Alkali reacts with ammonium salts to produce ammonia gas.
  • Acid has pH 8–14; Alkali has pH 1–6.
What are the products of neutralisation between hydrochloric acid and calcium hydroxide?
  • Calcium chloride and water
  • Calcium carbonate and water
  • Calcium sulphate and hydrogen
  • Calcium chloride and hydrogen
Why is antacid used to relieve gastric pain?
  • Antacid is less corrosive.
  • Antacid is alkaline to the stomach.
  • Antacid can kill microorganisms.
  • Antacid can neutralise excessive gastric juice.
The following information describes indicator M: Indicator M becomes colourless when tested with vinegar. What is indicator M?
  • Universal indicator
  • Red litmus paper
  • Methyl orange indicator
  • Phenolphthalein indicator
Which of the following matches the correct colour change of litmus paper?
  • Pickle — Red to Blue
  • Fertiliser — Red to Blue
  • Soap — Red to Red
  • Distilled water — Blue to Red
Which of the following is a neutralisation reaction?
  • Sodium chloride + Calcium nitrate → Calcium chloride + Sodium nitrate
  • Carbon dioxide + Water → Oxygen + Glucose
  • Sulphuric acid + Potassium hydroxide → Potassium sulphate + Water
  • Calcium hydroxide + Calcium nitrate → Calcium hydroxide + Calcium nitrate
Syazwani has gastritis. Among the following, what action can she take to reduce the gastritis?
  • Eat oranges
  • Eat pineapple
  • Drink lemon juice
  • Drink cow's milk
Diagram shows animal P. Hamka was stung by animal P while swimming at a beach. Which of the following immediate actions should he take to prevent more serious injury?
  • Pour vinegar on the wound area
  • Urinate in the wound area
  • Wrap the wound tightly
  • Wipe the wound area with toothpaste
Write the colour change for the indicators below based on the following substances. For a detergent solution (alkali), what colour change is observed with phenolphthalein indicator?
  • Colourless to pink
  • Pink to colourless
  • Blue to red
  • Green to yellow
Write the colour change for the indicators below based on the following substances. For citrus juice (acid), what colour change is observed with methyl orange indicator?
  • Yellow to red
  • Red to yellow
  • Blue to green
  • Purple to pink
Write the colour change for the indicators below based on the following substances. For a carbonated cola drink (acid), what colour change is observed with blue litmus paper?
  • Blue to red
  • Red to blue
  • Blue to green
  • No colour change
Feels slippery.
  • Acids
  • Bases
  • neutral
  • All
Tastes bitter.
  • Acids
  • Bases
  • Salts
  • All
Forms hydroxide ions (OH-) in water
  • Acids
  • Bases
  • All
pH less than 7.
  • Acids
  • Bases
  • All
pH greater than 7.
  • Acids
  • Bases
  • All
  • pure water
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