1 ) Atomic radii . . . . . . . . . . . . . . . of periodic table .
A ) increases from left
to right and decreases from top to down ,
B ) decreases from left to right and increases
from top to down ,
C ) increases from left to right and increases
from top to down ,
D ) None of these ,
Correct Answer : - B )
decreases from left to right and increases from top to down ,
2 ) Total . . . . . . . . . groups in modern
periodic table .
A ) 14 , B
) 18 ,
C ) 16 D
) None of these ,
Correct Answer : - B ) 18 ,
3 ) Difference in density is the basis of
gravity separation .
4 ) The no. of electrons in valence shell of
element reflects . . . . . . . . . . . ,
A ) period number , B
) group number ,
C ) both of these , D
) None of these ,
Correct Answer : - B ) group number ,
5 ) In 5th period , there are . . . . . . . .
. elements .
A ) 12 , B
) 18 ,
C ) 16 , D
) None of these ,
Correct Answer : - B ) 18 ,
6 ) Ionization energy . . . . . . . . . . . .
. of periodic table .
A ) increases from left
to right and decreases from top to down ,
B ) decreases from left to right and increases
from top to down ,
C ) increases from left to right and increases
from top to down ,
D ) None of these ,
Correct Answer : - A ) increases from left to right and
decreases from top to down ,
Ionization energy : - The energy required to
reduce / remove an electron from valence shell of an atom .
7 ) Electronegativity . . . . . . . . . . . .
. . . periodic table .
A ) increases from left
to right and decreases from top to down ,
B ) decreases from left to right and increases
from top to down ,
C ) increases from left to right and increases
from top to down ,
D ) None of these ,
Correct Answer : - A ) increases from left to right and
decreases from top to down ,
Electronegativity : - The force that attracts
electron towards itself .
8 ) " 4F " electronic sub - shell in Lanthanides is incompletely
filled .
9 ) Number of elements in 4th period is . . .
. . . . . . . . . ,
A ) 14 , B
) 18 ,
C ) 16 D
) None of these ,
Correct Answer : - B ) 18 ,
10 ) Metallic character . . . . . . . . . . .
down the group .
A ) increases , B
) decreases ,
C ) no change , D
) None of these ,
Correct Answer : - A ) increases ,
Now go to online quiz section and Chemistry Quiz 6 is uploaded related to these mcqs , so check your preparation by this link : -
