1008213-Chapter5_excercise

8/7/2019 1008213-Chapter5_excercise

http://slidepdf.com/reader/full/1008213-chapter5excercise 1/5

Chapter 5 : Water and Solution

INSTRUCTION – Students have to COPY ALL QUESTION and write the questions and

answers in the exercise book.

SECTION A

Objective Question1. The following shows an equation

Which of the following statement s about solution X is false?

A. Solution X is salty

B. Solution X is sodium nitrate solution.

C. Crystal of X can be obtained if solution X is evaporated.

D. Solution X is a product of a reaction called condensation.

Questions 2 to 4 are based on the figure below.

2. An experiment was carried out using the apparatus as shown in the figure above.

What tests can be carried out to determine the identity of gas X and gas Y ?

I Use a glowing wooden splint

II Use a burning wooden splint

III Use universal indicator

IV Use a standard sodium hydroxide solution

A I and II only

B II and IV only

C II, III and IV only

D I, II, III and IV

3. The activity was repeated using a platinum anode and a copper cathode. Whatgases were formed at X and Y ?

X Y

A Hydrogen Carbon dioxide

B Oxygen Sulphur dioxide

C Hydrogen Oxygen

D Oxygen Hydrogen

Sodium hydroxide + Nitric acid



4. The above process is known as

A distillation

B evaporation

C neutralization

D electrolysis

5. When dilute sulphuric acid react with calcium carbonate powder, a gas is

released. The gas shows a positive test with

A limewater

B burning wooden splinter

C glowing wooden splinter

D potassium magnate (VII) solution.

6. What happens to the water molecules as evaporation takes place?

A They become smaller

B They move closer together

C They gain more energy

D They contain one hydrogen atom and one oxygen atom.

7. How does the evaporation process help in preserving food such as anchovies,

when dried out in the Sun?

A Bacteria in the anchovies dry up

B Bacteria cannot grow without water

C Dried anchovies can be salted

D The Sun kills the bacteria in the anchovies

8. Table 1 show the pH values for solution P, Q and R.pH

value

3 7 9

Solution P Q RTable 1

Which of the following solutions, when mixed together in the correct volumes, will

produce a solution with a pH value 7?

I Q and R

II P and R

III P, Q and R

A I onlyB I and II only

C I and III only

D II and III only

9. Table 2 show the pH values for solution X,Y and Z.

pH X Y Z



valueSolution 3 7 9

Table 2

Which of the statements is true?

A X is an alkali

B Z tastes sourC Y reacts with acid

D X reacts with calcium carbonate

10. Based on equation below, which of the following correctly represent X and Y?

Solution X + aluminium carbonate salt + water + gas Y

Solution X Gas Y

A Zinc sulphate sulphur dioxide

B Potassium hydroxide Hydrogen

C Sulphuric acid Carbon dioxide

D Nitric acid Hydrogen

11. A little potassium magnate was dissolved in 100 ml of water. Which of the following

statements is correct?

I Potassium magnate is the solution

II Water is the solvent

III A potassium magnate solution is formed

IV If more solute is added, a concentrated solution is formed

A I and II onlyB III and IV only

C II, III and IV only

D I, II, III and IV

12. 100 cm3 of a copper chloride solution contains 100 g of copper chloride. 50 cm3 of

this solution is poured into a measuring cylinder. 100 cm3 of water is added to the

measuring cylinder. What is the volume of the solution in the measuring cylinder

and how much copper chloride is found in the new solution now?

Volume(ml) Amount of copper chloride (g)

A 150 50B 250 150

C 200 50

D 200

SECTION B

1. Diagram 1 shows three beakers filled with vinegar, lemon juice and soap

solution respectively.



Diagram 1

(a) State two similarities between vinegar and lemon juice.

(b) List two characteristics of soap solution.

(c) Classify vinegar, lemon juice, soap solution, toothpaste and washing soda.

(d) Name the reaction that occurs when lemon juice is added to the soap

solution.

2. Table 1 show the substance and the acidic, neutral or alkaline conditions. Fill

the table with the correct condition.

pH

value

Substance Acid, neutral and

alkali1 Hydrochloric acid2 Lime juice3 Vinegar, apple4 Soda water5 Toothpaste6 Tea7 Calcium hydroxide solution8 Milk of magnesia9 Pineapple10 Potassium hydroxide solution11 Distilled water12 Baking powder

vinegar, lemon juice, soap solution, toothpaste and

Acids Alkali

i. _______________

ii. _______________

i. _______________

ii. _______________

iii. _______________

vinegar Lemon juice Soap

solution



13 Sodium hydroxide solution14 citric acid

Table 1

1008213-Chapter5_excercise

Documents

Transcript of 1008213-Chapter5_excercise