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Pre Test Final Year Examination Form 4

Total questions: 40

Worksheet time: 1hrs 20mins

Name
Class
Date
1.

Which of the following that contains atoms?

a)

Glucose

b)

Copper

c)

Naphthalene

d)

Sodium Chloride

2.

How many molecules in one mole sulphur dioxide, SO2?

Avogadro constant = 6.o X 1023 mol-1

a)

3.0 X 1023

b)

6.0 X 1023

c)

9.0 X 1023

d)

12.0 X 1023

3.

Of the following, which is true about elements in period 3 from left to right in Periodic Table?

a)

Metallic properties of elements increase

b)

Electron valence decrease

c)

Electronegativity of the elements decreases

d)

Atomic size decrease because of the proton number increase

4.

Which of the following solution, dissolved in water and will produce a solution that have a pH value below than 7?

a)

Ethanol

b)

Ammonia

c)

Sulphur trioxide

d)

Sodium chloride

5.

Which of the following is NOT TRUE about composite?

a)

Glass

b)

Superconductor

c)

Photochomic glass

d)

Plastic that have been proved by glass

6.

The rate of reaction for decomposition of hydrogen peroxide decreases in time because

a)

product of reaction decrease

b)

temperature of hydrogen peroxide decrease

c)

volume of hydrogen peroxide decerase

d)

concentrationof hydrogen peroxide decrease

7.

Carbon-12 atom and carbon-14 atom are similar in terms of

a)

proton number

b)

nucleon number

c)

number of neutron

d)

relative atomic mass

8.

How many times one carbon dioxide molecule is heavier than one Helium atom?

Relative atomic mass, C=12, O= 16 and He=14

a)

10

b)

11

c)

12

d)

13

9.

a)

126C

b)

2311Na

c)

4018Ar

d)

4020Ca

10.

Which of the following carbonate salt will not decomposed when heated?

a)

Zinc carbonate

b)

Sodium carbonate

c)

Calcium carbonate

d)

Lead (II) carbonate

11.

10 g calcium carbonate takes 20 second to react with excess hydrochloric acid. What is the rate of the reaction in this experiment?

a)

0.05 gs-1

b)

0.1 gs-1

c)

0.2 gs-1

d)

0.5 gs-1

12.

Which of the following statements is true about ethanoic acid?

a)

can not neutralize an alkali

b)

its pH value is above 7

c)

it turns red litmus paper blue

d)

it ionize partially in water to produce hydrogen ion

13.

a)

13 proton and 14 neutron

b)

13 neutron and 14 proton

c)

13 electron and 14 proton

d)

13 proton and 27 neutron

14.

A compound of formulae R2SO4 has a relative atomic mass is 142. What is the relative atomic mass for R? Relative atomic mass S= 32 and O = 16

a)

23

b)

27

c)

39

d)

85.5

15.

A vertical row in Periodic Table is called a group. What is the similarity between elements in the same group?

a)

number of proton

b)

number of neutron

c)

number of shell of electron

d)

number of valence electron

16.

Which of the following salts can be can be prepared through the reaction by double decomposition?

a)

Sodium sulphate

b)

Calcium nitrate

c)

Silver chloride

d)

Copper(II) chloride

17.

a)

Urea

b)

Superphosphate

c)

Ammonium sulphate

d)

Ammonium phosphate

18.

Magnesium metal reacts with sulphuric acid 2.0 mol dm-3 to release hydrogen gas. Which of the following method that can slow the time of the reaction?

a)

heat the sulpuric acid

b)

add a distilled water to the mixture

c)

add a copper(II) sulpahte to the mixture

d)

add a few drops concentrated sulphuric acid to the mixture

19.
a)

2

b)

8

c)

10

d)

12

20.

Which of the following contains the most atoms? Relative formula mass MgO = 40, MgCl2 = 95, KNO3 = 101, NH4NO3 = 80 and Avogadro constant = 6.0 x 1023 mol -1

a)

20.00 g MgO

b)

25.25 g KNO3

c)

23.75 g MgCl2

d)

20.00 g NH4NO3

21.
a)

The compound is an ionic compound

b)

The compound is formed through covalent bond

c)

The compound has high boiling point

d)

The compound is formed through electron transfer

22.

The reactants that can be used to identify hydrochloric acid is

a)

sodium hydroxide

b)

copper (II) oxide

c)

silver nitrate

d)

barium chloride

23.

Which of the following will happened when molten sulphur start to freeze?

I Heat released

II constant temperature

III Kinetic energy increase

IV Distance between particles decrease

a)

I and II

b)

III and IV

c)

I, II, and III

d)

I, II and IV

24.

a)

I and II onLy

b)

I and III only

c)

II and IV only

d)

III and IV only

25.

a)

II and IV only

b)

I, II and III only

c)

I, III and IV only

d)

II, III and IV only

26.

A mass of 4.0 g sodium hydroxide solid, NaOH is diluted in water untill solution become 100 cm3. What is the molarity of sodium hydroxide that was formed?[ Relative atomic mass: H=1, O=16, Na=23]

a)

0.1 mol dm3

b)

0.4 mol dm3

c)

1.0 mol dm3

d)

4.0 mol dm3

27.

a)

Lead glass

b)

Borosilicate glass

c)

Soda-lime glass

28.

a)

15 g magnesium powder with 50 cm3 hydrochloric acid 0.2 moldm-3.

b)

5 g Magnesium powder with 100 cm3 hydrochloric acid 0.1 moldm-3

c)

15 g magnesium plate with 50 cm3 hydrochloric acid 0.2 moldm-3

d)

10 g magnesium plate with 100 cm3 hydrochloric acid 0.1 moldm-3

29.

Which of the following ionic pairs have the same number of electrons. [Proton number : Na, 11 ; Mg, 12 ; Cl, 17 ; K, 19 ; Ca, 20]

a)

K+ and Cl-

b)

Ca2+ and Mg2+

c)

Na+ and Cl-

d)

K+ and Na+

30.

a)

TO

b)

TO2

c)

T2 O

d)

T2O3

31.

a)
b)
c)
d)
32.

a)

I and II onLy

b)

III and IV only

c)

I, III and IV only

d)

II,III and IV only

33.

a)

I only

b)

I and III only

c)

II and IV only

d)

III and IV only

34.

a)

Activation energy for this reaction is decrease.

b)

The particles of the reaction gain more kinetic energy.

c)

The number of collision per volume between the particles of reaction is increase

d)

The energy required to break the bonding in the reaction is decrease

35.

a)

I and III only

b)

II and IV only

c)

I, II and III only

d)

I, III and IV only

36.

Which of the following contains most atoms?

[Relative atomic mass : O, 16 ; C, 12 : N e, 20 ; K, 39]

a)

32 g oxygen

b)

36 g carbon

c)

39 g potassium

d)

40 g neon

37.

a)

2.4g

b)

1.6g

c)

4.0g

d)

24.0g

38.

a)

LiO

b)

LiO2

c)

Li2O

d)

Li2O2

39.

Which of the following statements are correct for element in group 1 when they move down the group in the periodic table?

a)

The atomic size is increased

b)

The metallic properties of the elements is increased

c)

The number of valence electrons are increased

d)

The electronegativity of elements decreases

40.

Which of the following shows the properties of covalent compound?

a)

Dissolve in covalent solvent

b)

Higher melting and boiling point

c)

Conduct the electricity in solid state

d)

Conduct electricity when dissolved in covalent solvent

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