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Chemistry Unit 7 Test

Total questions: 40

Worksheet time: 3600secs

Name
Class
Date
1.

Melting points of group HA elements are higher than those of group IA because:

a)

Atoms of HA elements have larger size

b)

IIA elements are more reactive

c)

Atoms of IIA elements provide two binding electrons

d)

IA elements have smaller atomic radius

2.

Which of the following halides of aluminium is predominantly covalent in nature?

a)

AlI3

b)

AlCl3

c)

AlBr3

d)

AlF3

3.

Which one of the following is a basic oxide?

a)

B2O3

b)

ZnO

c)

Na2O

d)

SO2

4.

Which of the following is true about Na, Si and S?

a)

Their chlorides are ionic solid

b)

Covalent bond is found in most of the compounds

c)

They are in the same period of periodic table

d)

They are in the same group of the periodic table

5.

Which one will have the highest 2nd ionization energy?

a)

Is2 2s2 2p6 3s1

b)

Is2 2s2 2p4

c)

ls2 2s2 2p6

d)

Is2 2s2 2p6 3s2

6.

Which one of the following transition elements of 3d series has highest melting point and boiling point?

a)

Mn

b)

V

c)

Zn

d)

Ti

7.

In which of the following pair of ions, one has outer vacant 3d sub-shell and other

has outer 3d1, 1 electronic configuration?

a)

Cr+3, Co+3

b)

Fe+3, Mn+2

c)

Fe+3, Co+3

d)

Sc+3Zn+2

8.

In this compound [Pt CI NO2 (NH3)4]2+ the coordination number of transition element is:

a)

6

b)

2

c)

8

d)

4

9.

Which of the following pair of ligands is anionic in nature?

a)

Aqua hydrido

b)

Ammine, aceto

c)

Carbonyl, bromo

d)

Cyano, iodo

10.

The IUPAC name of [Co Br (NH3)4(H2O)] (NO3)2:

a)

Tetraammine aqua bromocobalt (III) nitrate

b)

Tetraammine aqua bromocobaltate (III) nitrate

c)

Aqua bromo tetrammine cobalt (III)

d)

Tetraammine aquabromo cobalt (II) nitrate

11.

Which one of the following pairs of ions is colourless?

a)

Ti3+, Cu2

b)

Ti4+ ,Cu1+

c)

Ni2+, V3+

d)

Co2+, Fe3+

12.

Coordination number and oxidation state of Cr in K3[Cr(C2O4)3] are respectively:

a)

4 and +2

b)

3 and+3

c)

6 and +3

d)

3 and 0

13.

Which of the following transition elements has greater covalent radius?

a)

Ti

b)

V

c)

Cu

d)

Zn

14.

Which of the following complex of transition metal atom/ion is dsp3 hybridized?

a)

[MnCl4]-2

b)

[Co(NH3)6]+3

c)

[Cu(NH3)4]+2

d)

[Fe(CO)5]

15.

The flame colour of lithium metal is

a)

Golden Yellow

b)

Bright Yellow

c)

 Crimson red

d)

Brick red

16.

Which of the following metal burns in steam to produce its oxide and hydrogen gas

a)

Be

b)

Mg

c)

Na

d)

Ca

17.

Which of the following oxide will behave as an acid with caustic soda

a)

Na2O

b)

MgO

c)

BeO

d)

KO2

18.

Which of the following is the correct decreasing order of basic character of alkali metal oxides

a)

KO2 > Na2O2 > Li2O

b)

Cl2O7 > SO3 > P2O5

c)

BeO < MgO < CaO

d)

All are correct

19.

2M + 2H2O  →\rightarrow   2MOH + H2, in the given reaction ‘M’ may be

a)

A) Na

b)

C) Mg

c)

B) K

d)

Both A and B

20.

The complex heaving coordination number 4, may be               in geometry

a)

A) Tetrahedral

b)

C) Trigonal bipyramidal

c)

B) Square planar

d)

Both A and B

21.

An ion Z+3 having 23 electrons, belongs to

a)

Normal elements

b)

Inner transition elements

c)

Outer transition elements

d)

Non-typical transition elements

22.

Which of the following reacts with water to give more soluble hydroxide M(OH)2

a)

MgO

b)

CaO

c)

BaO

d)

SrO

23.

Second ionization energy of Ca is than that of K

a)

Lower

b)

Almost equal

c)

Higher

d)

Zero

24.

The minimum number of oxidation states is shown by

a)

Sc

b)

Mn

c)

Cu

d)

Zn

25.

Element ‘M’ leaves scratch on glass like iron and has high melting point. It forms a chloride (MCl2), What does this suggest about element M?

a)

It is a Group II metal

b)

It is a Group IV metal

c)

It is an alkali metal

d)

It is a transition metal

26.

The product formed in small amount when Mg is burn in air

a)

MgO

b)

CO2

c)

MgS

d)

 Mg3N2

27.

The element which burns with a brilliant yellow flame in chlorine atmosphere is

a)

Na

b)

C

c)

Ba

d)

K

28.

Which is bidentate neutral ligand

a)

Carbonato

b)

Acetato

c)

Oxalato

d)

Hydrazine

29.

The anti-cancer drug cisplatin has the formula [Pt (NH3)2Cl2]. What is the oxidation state of platinum and co-ordination number in it?

a)

II, 6

b)

IV, 2

c)

II, 4

d)

II, 5

30.

Ethylenediamine (en) is a

a)

Monodenate ligand

b)

Hexadentate ligand

c)

Bidentate ligand

d)

Tridentate ligand

31.

All of the following shows coloured compound in +2 oxidation state except

a)

Cu2+

b)

Fe2+

c)

Zn2+

d)

Ni2+

32.

In which complex ligand makes ring like structure

a)

[Pt(C2O4)2]2

b)

[Fe (CO)5]

c)

[Ag (NH3)2] Cl

d)

[Co (NO2)3(NH3)3]

33.

The correct order of radii is

a)

Na < Li < K < Cs

b)

N < Be < B < Li

c)

Cr < Mn < Fe < Ni

d)

 S < P < Si < Al

34.

As far as nuclear charge increases, the decrease in ionic radii will also be

a)

Smaller

b)

Moderate

c)

Large

d)

Remain same

35.

Which of the following metal has lowest electrical conductivity

a)

Gold

b)

Aluminium

c)

Copper

d)

Silver

36.

Tri-positive ion formation is not possible for

a)

1s2, 2s2, 2p5 3s2 3p3

b)

1s2, 2s2, 2p6, 3s2

c)

1s2, 2s2, 2p6, 3s2, 3p1

d)

1s2, 2s2, 2p6, 3s2, 3p6, 4s1, 3d5

37.

The electrical conductance of metals in IA and IIA groups generally……………down the group.

a)

Remains constant

b)

First increases then decreases

c)

Increases

d)

Decreases

38.

In IIA group elements, which of the following properties increases down the group:

a)

Melting and boiling points

b)

Electronegativity

c)

Hardness

d)

Shielding effect

39.

All of the following elements form amphoteric oxides EXCEPT?

a)

Be

b)

Zn

c)

Al

d)

Ca

40.

Which of the following elements reacts with oxygen and nitrogen and is often used to remove air bubbles from molten metal?

a)

Ga

b)

Al

c)

In

d)

Th

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