FORM 2 SCIENCE KSSM CHAPTER 6 ACID & ALKALINE

Which of the following is acidic?

• Bleach

• Lime juice

• Sodium hydroxide solution

• Soap

Which of the following is a strong acid?

• Tamarind

• Lime juice

• Bitter gourd

• Toothpaste

Which of the following substances can be used to reduce the pain caused by the sting of a bee?

• Vinegar

• Orange juice

• Baking powder solution

• Pineapple juice

Table 1 shows the pH value of four liquids, P Q, R and S contained in four separate beakers and having the same volume. Which of the following pairs of liquids are likely to neutralise each other?

• P and Q

• Q and R

• P and R

• P and S

Diagram 1 shows an experiment to study the reaction in neutralisation. Which of the following cannot be used as indicator in the experiment?

• Universal indicator

• Methyl orange

• Phenolphthalein

• Benedict solution

What is the use of antacid?

• To make fertiliser

• To treat insect bite

• To neutralise extra acid in stomach

• To neutralise the residue of shampoo on the hair

Table 2 shows the results of an experiment to study substance P. What is substance P?

• Yogurt

• Bleach

• Salt water

• Tap water

After cutting the fish, Alia's hand has a fishy smell. What is the way to get rid of the smell?

• Apply lotion on the hand

• Immerse the hand in distilled water

• Wash the hand with lime juice

• Wash the hand with salt water

Which of the following is a neutral substance?

• Sugar water

• Soap water

• Pineapple juice

• Ammonia solution

Diagram 2 shows a few drops of universal indicator being dropped into lime juice. What can be observed in the change of colour of the universal indicator?

• Red

• Blue

• Green

• Colourless