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mcqs of
,
1 : Which oxide is the most basic oxide?
A
:
Na2O
B
:
Li2O
C
:
MgO
D
:
CO
2 : Which group elements are the most reactive elements?
A
:
Transition metal group
B
:
First group
C
:
Second group
D
:
Third group
3 : In which element their exist strongest forces of attraction between atoms?
A
:
Mg
B
:
Ca
C
:
Sr
D
:
Ba
4 : X is a monatomic gas, which statement about this is correct?
A
:
X burns in air
B
:
X is coloured
C
:
X is unreactive
D
:
X will this place iodine from it
5 : Which halogen will have the least reactivity with alkaline earth metals?
A
:
Chlorine
B
:
Iodine
C
:
Bromine
D
:
Fluorine
6 : Which compound do you expect to be colored?
A
:
KCI
B
:
BaCi2
C
:
AICI3
D
:
NiCi2
7 : Which halogen acid is unstable at room temperature?
A
:
HBr
B
:
HI
C
:
HCI
D
:
HF
8 : Elements of which group are all colored?
A
:
Second group
B
:
6th group
C
:
4th group
D
:
Fifth group
9 : Which property is correct for group 1 elements?
A
:
Low catalytic activity
B
:
High density
C
:
Low electrical conductivity
D
:
High melting point
10 : As we move down the group in Group 1, the atomic size:
A
:
Increases
B
:
Decreases
C
:
Remains the same
D
:
First increases, then decreases
11 : Which of the following is the lightest alkali metal?
A
:
Sodium
B
:
Lithium
C
:
Potassium
D
:
Rubidium
12 : Which halogen exists as a liquid at room temperature?
A
:
Fluorine
B
:
Chlorine
C
:
Bromine
D
:
Iodine
13 : What is the colour of iodine at room temperature?
A
:
Yellow
B
:
Green
C
:
Purple
D
:
Red
14 : Which alkali metal forms a purple flame during a flame test?
A
:
Sodium
B
:
Lithium
C
:
Potassium
D
:
Rubidium
15 : Alkali metals react with water to produce:
A
:
Hydrogen gas
B
:
Carbon dioxide
C
:
Oxygen gas
D
:
Ammonia
16 : The most reactive halogen is:
A
:
Fluorine
B
:
Chlorine
C
:
Bromine
D
:
Iodine
17 : Halogens are non-metals because they:
A
:
Have low melting points
B
:
Form covalent bonds
C
:
Gain electrons to form anions
D
:
Are poor conductors
18 : Transition elements are good conductors of:
A
:
Heat and electricity
B
:
Only heat
C
:
Only electricity
D
:
Neither heat nor electricity
19 : Transition metals form coloured compounds because:
A
:
They are radioactive
B
:
They have unpaired d-electrons
C
:
They have low melting points
D
:
They dissolve in water
20 : Which is a characteristic property of transition metals?
A
:
High reactivity
B
:
Variable oxidation states
C
:
Poor conductivity
D
:
Low melting points
21 : Which noble gas is used in balloons?
A
:
Neon
B
:
Argon
C
:
Helium
D
:
Xenon
22 : Which transition metal is commonly used in jewelry?
A
:
Iron
B
:
Titanium
C
:
Platinum
D
:
Nickel
23 : Halogens react with hydrogen to form:
A
:
Metal halides
B
:
Hydrogen halides
C
:
Oxides
D
:
Sulfides
24 : The only liquid transition metal at room temperature is:
A
:
Iron
B
:
Copper
C
:
Mercury
D
:
Zinc
25 : Which group has elements that are all diatomic in nature?
A
:
Group 1
B
:
Group 17
C
:
Group 18
D
:
Transition elements
26 : Noble gases are chemically inert because:
A
:
They are non-metals
B
:
They have a full outer shell of electrons
C
:
They have low boiling points
D
:
They are found in air
Chemistry 9th MCQs || Ilam Ghar
Chemistry 9th
Chapter 9 : Group Properties and Elements
