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PERIODIC CLASSIFICATION OF ELEMENTS

Unit – IV PERIODIC CLASSIFICATION OF ELEMENTS ( CHEMISTRY )

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Question 1
Classification of elements into two division, namely metals and non-metals was firstly attempted by……..
A
Dobereiner
B
Lavoisier
C
Mandaleev
Question 2
In Mendeleev’s periodic table, all the elements are sorted in the periodic functions of their ……………..
A
Mass number
B
Atomic number
Question 3
One of the coinage metal is …………..
A
Copper
B
Sodium
C
Nickel
Question 4
Liquid metal at room temperature is ……………
A
Mercury
B
Bromine
C
Tin
Question 5
Osmium is the heaviest metal.  It is …………… time heavier than iron,
A
221/2
B
3
C
about half
Question 6
Metalloids have some metallic properties and some non-metallic properties.  An example for metalloid is ………
A
Silicon
B
Argon
C
Iodine
Question 7
Bronze is an alloy of …………..
A
Copper and tin
B
Silver and tin
C
Copper and silver
Question 8
An alloy used in manufacturing aircraft parts is ………………
A
Solder
B
Brass
C
Duralumin
Question 9
Which of the following metals does not liberate H2 from dilute acids?
A
Zinc
B
Iron
C
Tin
D
Lead
Question 10
Which of the following metals can be displaced by Zn to form their salt solution?
A
iron
B
Copper
C
Silver
D
Gold
Question 11
Number of groups in Mendelee’s Periodic table is …………..
A
8
B
9
C
10
Question 12
Number of periods in Mendeleev’s periodic table is …………
A
6
B
7
C
8
Question 13
The scientist who classified elements into metals and non-metals,
A
Dobereiner
B
Lavoisier
C
Newland
D
Lother Meyer
Question 14
The law of Triads was proposed by …………….
A
Lavoisier
B
Mendeleev
C
Newland
D
Dobereiner
Question 15
The Law of Octaves was proposed by …………..
A
Dobereiner
B
Mendelev
C
Newland
D
Lavoisier
Question 16
The scientist who plotted atomic weight against atomic volume of various elements.
A
Mendeleev
B
Newland
C
Lavoisier
D
Lothar Meyer
Question 17
The element in the first period of the periodic table
A
Lithium
B
Magnesium
C
Helium
D
Carbon
Question 18
An example of Alkali metals
A
Sodium
B
Calcium
C
Magnesium
D
Aluminum
Question 19
An example of Transition metal.
A
Sodium
B
Potassium
C
Iron
D
Calcium
Question 20
An example for metalloids.
A
Sodium
B
Potassium
C
Silicon
D
Calcium
Question 21
The metal which is the best conductor of electricity.
A
mercury
B
magnesium
C
copper
D
silver
Question 22
…….. is the lightest metal.
A
sodium
B
calcium
C
lithium
D
potassium
Question 23
The non-metal which is a good conductor of electricity.
A
Hydrogen
B
Chlorine
C
Graphite
D
Neon
Question 24
……….. is the heaviest metal.
A
Iron
B
Lithium
C
Aluminium
D
Osmium
Question 25
……. Has the highest melting point.
A
sodium
B
potassium
C
Tungsten
D
Iron
Question 26
The most reactive metal which is at the top of the reactivity series.
A
Sodium
B
Silver
C
copper
D
potassium
Question 27
The least reactive metal
A
sodium
B
potassium
C
magnesium
D
platinum
Question 28
The alloy used to make Aircraft parts.
A
steel
B
bronze
C
duralumin
D
solder
Question 29
The metal which melts in the hand (at the temperature of human body)
A
Mercury
B
Gallium
C
Sodium
D
Potassium
Question 30
The alloy which is used for making status.
A
Brass
B
Silver
C
Bronze
D
Steel
Question 31
The alloy used for joining metal surfaces without melting them.
A
Duralumin
B
Brass
C
Steel
D
Solder
Question 32
Amalgam is an alloy in which one of the constituents is …………….
A
Sodium
B
Potassium
C
Mercury
D
Iron
Question 33
The Law of Triads was proposed by …………….
A
Newland
B
Dobereiner
Question 34
…………… is a metalloid.
A
Germanium
B
Gallium
Question 35
An example for least reactive metal.
A
Sodium
B
Silver
Question 36
Atoms of one metal randomly take the place of atoms of another metal in …………. alloy.
A
Substitutional
B
Interstitial
Question 37
Amalgam is an alloy in which one of the constituents is ……………
A
Mercury
B
Sodium
C
Silver
Question 38
Match the following:
  1. Lavoisier - a) Law of Triads
  2. Newland - b) Metals and non-metals
  3. Lothar Meyer - c) law of Octaves
  4. Doberenier - d) Atomic weight Atomic volume curve
A
2 3 4 1
B
1 4 2 3
C
4 1 2 3
D
3 2 1 4
Question 39
Match the following:
  1. Alkali metal - a) Calcium
  2. Alkaline earth metal - b) Germanium
  3. Transition metal - c) Sodium
  4. Metalfoid - d) Iron
A
2 4 1 3
B
1 4 2 3
C
4 1 2 3
D
2 3 4 1
Question 40
Match the following:
  1. Mercury - a) Solder
  2. Most reactive - b) Liquid non-metal
  3. Bromine - c) Sodium
  4. Alloy - d) Liquid metal
A
2 4 1 3
B
3 1 2 4
C
1 4 2 3
D
2 3 4 1
Question 41
Match the following:
  1. Duralumin - a) Cooking utensils
  2. Bronze - b) window and door fitting
  3. Steel - c) Aircraft parts
  4. Solder - d) Statues
  5. Brass - e) Tin and lead
A
2 4 1 3 5
B
3 5 1 2 4
C
5 1 4 2 3
D
2 3 4 1 5
Question 42
  • Assertion (A)  : Newland arranged the elements in the ascending order of atomic masses and found that the eight     element had the same properties as the first.
  •     Reason (R)      : As it resembled the musical octaves, he called this arrangement the law of octaves.
A
A is right, R is wrong
B
A is wrong, R is right
C
A is right, R explains A
D
R does not explain A
Question 43
  • Assertion (A)   : Lavoisier proposed the law of Triads.
  •     Reason (R)       : There are seven periods in the periodic table.
A
A is right, R is wrong
B
A is wrong, R is right
C
A is right, R explains A
D
R does not explain A
Question 44
  • Assertion (A)  : Aluminium combines with oxygen to form a layer of Aluminium oxide.
  •     Reason (R)      : When metals like Aluminium react with dilute hydrochloric acid, Hydrogen is liberated.
A
A is right, R is wrong
B
A is wrong, R is right
C
A is right, R explains A
D
R does not explain A
Question 45
  • Assertion (A)  : Sulphur burns in air to form sulphur dioxide.
  •     Reason (R)      : Phosphorous burns in air to form phosphorous pentoxide.
A
A is right, R is wrong
B
A is wrong, R is right
C
A is right, R explains A
D
Both A and R are correct
Question 46
  • Assertion (A)  : Sodium is at the top of the reactivity series.
  •     Reason (R)      : Highly reactive metals occupy the top portion of the reactivity series.
A
A is right, R is wrong
B
A is wrong, R is right
C
A is correct, R explains A
D
Both A and R are correct
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There are 46 questions to complete.

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