Free Printable Chemistry 12 Unit 13 Period 3

1.

The value of effective nuclear charge ______________ across the PERIOD.

a)

increases

b)

decreases

2.

Atomic radius ___________ as we move down the GROUP.

a)

Increases

b)

Decreases

c)

Remains constant

3.

Which of the following $increases$ as we move across the $PERIOD$ ?

a)

Ionization Energy

b)

Electron Affinity

c)

Electronegativity

d)

All 3

4.

Which of the following has $Giant\ COVALENT$ structure?

a)

Si

b)

Na

c)

P

d)

S

5.

Electrical $CONDUCTIVITY$ depends on ___________.

a)

No. of free electrons

b)

Size of the element

c)

Structure of the element

d)

Electronegativity

6.

Which of the following is a SEMI-CONDUCTOR?

a)

Si

b)

Na

c)

P

d)

Cl

7.

When Mg reacts with $STEAM$ , it produces ___________.

a)

Mg(OH) 2

b)

MgO

c)

Mg(OH) 3

8.

Complete the general reaction: $Metal+Water\ \longrightarrow$ ___________

a)

Base + H2

b)

Acid + H2

9.

Which of the following are the oxides of Phosphorous?

a)

$P_4O_6\ \&\ P_4O_{10}$

b)

$P_4O_8\ \&\ P_5O_{10}$

c)

$P_4O_6\ \&\ P_5O_8$

10.

Which of the following element has $only\ ONE$ oxide?

a)

Cl

b)

S

c)

P

d)

Mg

11.

Complete the following general equation: $Non-metal\ oxide+Base\ \longrightarrow$

a)

Salt + Water

b)

Acid + Water

c)

Base + Water

12.

Which of the following oxide is AMPHOTERIC in nature?

a)

Al2O3

b)

Na2O

c)

SO2

d)

P4O10

13.

Write the name of following oxide: Cl2O7 ; (a)

14.

Write the name of following acid: HClO4

(a)

15.

What is the name of following Chloride: NaOCl ; (a)

16.

Which of the following chlorides change their structure from $ionic\ to\ covalent$ when solid turns to liquid or vapour?

a)

AlCl3

b)

PCl5

c)

MgCl2

d)

Both PCl5 & AlCl3

17.

The reaction of Salt with water is called ____________.

a)

Hydrolysis

b)

Hydration

c)

Displacement reaction

d)

Pyrolysis

18.

Which of the following is the strongest acid?

a)

Orthosilicic acid

b)

Phosphoric acid

c)

Sulfuric acid

d)

Perchloric acid

19.

$2S\ +Cl_2\longrightarrow$

a)

$S_2Cl_2$

b)

$2SCl$

c)

$S_2Cl$

d)

$SCl_2$

20.

$Ionic\ oxides$ undergo ____________ in $molten\ state$ to conduct electricity.

a)

$electrolysis$

b)

$hydrolysis$

c)

$pyrolysis$

21.

$SO_2+H_2O\ \longrightarrow\$

a)

$sulfurous\ acid$

b)

$sulfuric\ acid$

22.

The typical pH of $H_2SO_4$ solution will be :

a)

$0$

b)

$4$

c)

$9$

d)

$14$

23.

Which of the following compound when dissolved in water gives fumes of HCl?

a)

NaCl

b)

MgCl₂

c)

AlCl₃

d)

Na

24.

If we add water to silicon tetrachloride, there is a violent reaction to produce ________________ and fumes of hydrogen chloride.

a)

carbon dioxide

b)

silicon dioxide

c)

silicon tetraoxide

d)

silicon hydroxide

25.

Which of the following compound is changed from Ionic to covalent compound when heated form solid to liquid?

a)

MgCl₂

b)

PCl₃

c)

PCl₅

d)

SiCl₄

26.

what is the oxidation state of Phosphorous in P₄O₁₀ ?

a)

3

b)

4

c)

5

d)

10

Chemistry 12 Unit 13 Period 3

Total questions: 26

Worksheet time: 16mins

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