Atomic Structure Test

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Atomic Structure Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

Atoms of different atoms combine to form-

A
Atoms

B
Molecules

C
Matter

D
All of these

Solution

According to the question the correct option will be option ‘B’ because Atoms of different atoms combine to form molecules so as to attain chemical stability.
Question 2
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which theory, proposed John Dalton?

A
Theory of molecules

B
Atomic mass theory

C
Theory of atoms

D
Law of conservation of substances

Solution

According to the question the correct option will be option ‘C’ because John Dalton 1808, believed that matter is made up of extremely minute indivisible particles, called atoms which takes part in chemical reactions. These particles can neither be created nor be destroyed.
Question 3
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If combining atoms of a compound have nearly similar electro negativities the bond between them is called-

A
electrovalent

B
covalent

C
metallic

D
ionic

Solution

According to the question the correct option will be option ‘B’ because A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.
So, combining atoms of a compound have nearly similar electro negativities the bond between them is covalent.
Question 4
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the smallest unit of matter that can take part in a chemical reaction are-

A
Molecules

B
Compounds

C
Atoms

D
Electrons

Solution

According to the question the correct option will be option ‘C’ because Dalton's atomic theory states that atoms are the smallest unit of matter that can participate in a chemical reaction. Chemical reactions involve the combination, separation, or rearrangement of atoms, but atoms are neither created, destroyed, divided into parts, or converted into atoms of any other kind.
Question 5
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The basic unit of matter which is capable of independent existence.

A
Atom

B
Molecule

C
Both A and B

D
None

Solution

According to the question the correct option will be option ‘B’ because Molecule is the basic unit of matter which is not capable of independent existence.
Question 6
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The valence electrons of an element are responsible for which of the following-

A
physical properties of an element

B
chemical properties of an element

C
Both A and B

D
None of the above

Solution

According to the question the correct option will be option ‘B’ because Valence electrons are electrons in the outermost shell and they are responsible for determining the number of bond formation and an atoms charge. this give the atom its chemical properties.
Question 7
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Dalton's theory fails to determine the existence of what?

A
molecules

B
compounds

C
allotropes

D
All of the above

Solution

According to the question the correct option will be option ‘C’ because Dalton's atomic theory fails to explain the existence of allotropes; it does not account for differences in properties of charcoal, graphite, diamond.
Question 8
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The number of electrons donated or accepted by its atom during chemical combination is called-

A
Anion

B
Cat ion

C
Valences

D
All of these

Solution

According to the question the correct option will be option ‘C’ because the valences of an element is the number of electrons donated or accepted by its atom during chemical combination.
Question 9
1 / -0

The basic unit of matter which is not capable of independent existence.

A
Atom

B
Molecule

C
Both A and B

D
None

Solution

According to the question the correct option will be option ‘A’ because Atom is the basic unit of matter which is not capable of independent existence.
Question 10
1 / -0

What are the smallest particles of matter?

A
Molecules

B
Ions

C
Atoms

D
None of the above

Solution

According to the question the correct option will be option ‘C’ because According to Dalton, atoms are the smallest particles of matter.

-When atoms combine together molecules are formed.

-When an atom looses or gains electron ions are formed.

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Atomic Structure Test - 3

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Atomic Structure Test - 3

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SHARING IS CARING

Question 1

Atoms

Molecules

Matter

All of these

Solution

Question 2

Theory of molecules

Atomic mass theory

Theory of atoms

Law of conservation of substances

Solution

Question 3

electrovalent

covalent

metallic

ionic

Solution

Question 4

Molecules

Compounds

Atoms

Electrons

Solution

Question 5

Atom

Molecule

Both A and B

None

Solution

Question 6

physical properties of an element

chemical properties of an element

Both A and B

None of the above

Solution

Question 7

molecules

compounds

allotropes

All of the above

Solution

Question 8

Anion

Cat ion

Valences

All of these

Solution

Question 9

Atom

Molecule

Both A and B

None

Solution

Question 10

Molecules

Ions

Atoms

None of the above

Solution

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