The Periodic Table Class 9 ICSE. We covered all the Periodic Table Class 9 ICSE in this post for free so that you can practice well for the exam.
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Periodic Table Class 9 ICSE Objective for students
The color of transition metal ions is due to the absorption of some wavelength. This absorption is due to
(A) d-p transitions
(B) s-d transitions
(C) p-d transitions
(D) d-d transitions
Option d – d-d transitions
Which one of the following metals has the highest melting point?
(A) Cu
(B) W
(C) Ni
(D) Ag
Option b – W
Which one of the following metals has the lowest melting point?
(A) Pt
(B) W
(C) Pd
(D) Au
Option d – Au
Which transition element is having highest density among the following
(A) Ti
(B) Fe
(C) Zn
(D) Cr
Option b – Fe
Platinum black is
(A) Platinum metal mixed with MnO2
(B) Velvity black powder obtained by reduction of platinum tetrachloride with glucose or sodium formate
(C) Platinum metal coated with black color
(D) None of the above
Option b – Velvity black powder obtained by reduction of platinum tetrachloride with glucose or sodium formate
In general, the transition elements exhibit their oxidation states in their compounds with the highest elements like
(A) Br
(B) Cl
(C) S, and P
(D) F and O
Option d – F and O
Transition elements are good conductors because
(A) They are all metals
(B) They are all solids
(C) They have free electrons in their outermost energy levels
(D) All of the above
Option c – They have free electrons in their outermost energy levels
The formation of interstitial compounds makes a transition metal
(A) More soft
(B) More ductile
(C) More metallic
(D) More brittle
Option d – More brittle
The tendency towards complex formation is maximum in
(A) s-block elements
(B) p-block elements
(C) d-block elements
(D) f-block elements
Option c – d-block elements
Transition elements form complexes readily because of
(A) the Small size of the cation
(B) The number of vacant d-orbitals
(C) the Large ionic charge
(D) All of the above
Option d – All of the above
Which one of the following is the least reactive?
(A) Cr
(B) Fe
(C) Pt
(D) Zn
Option c – Pt
In a transition series, as the atomic number increases, paramagnetism
(A) Increases gradually
(B) Decreases gradually
(C) First increases to a maximum and then decreases
(D) First decreases to a minimum and then increases
Option c – First increases to a maximum and then decreases
The magnetic moment of a transition metal ion is found to be 3.87 B.M. The number of unpaired electrons present in it is
(A) 2
(B) 3
(C) 4
(D) 5
Option b – 3
Which of the following transition metal has the highest melting point
(A) Cr
(B) Mo
(C) W
(D) Hg
Option c – W
The density of transition elements in a series
(A) Gradually increases
(B) Gradually decreases
(C) Remains constant
(D) None of the above
Option a – Gradually increases
Complex forming tendency increases with
(A) an increase in the size of the cation
(B) a Decrease in the size of the cation
(C) an increase in the size of the anion
(D) None of the above
Option b – a Decrease in the size of the cation
We covered all the periodic table class 9 icse above in this post for free so that you can practice well for the exam.
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