THE D-AND F-BLOCK ELEMENTS Quiz-16

D and F block elements Quiz-16

Dear Readers,

IIT JEE exam which consists of JEE Main and JEE Advanced is one of the most important entrance exams for engineering aspirants. The exam is held for candidates who are aspiring to pursue a career in the field of engineering and technical studies. Chemistry is important because everything you do is chemistry! Even your body is made of chemicals. Chemical reactions occur when you breathe, eat, or just sit there reading. All matter is made of chemicals, so the importance of chemistry is that it's the study of everything..

Q1. Impure metal form volatile compound (X) with CO and then (X) gives pure metal on heating. Metal is

•  Cu
•  Fe
•  Ni
•  Pt

Solution
c

Q2.Which of the following lanthanide is commonly used?

•  Lanthanium
•  Nobelium
•  Thorium
•  Cerium

Solution
d

Q3.  The transition metal used as a catalyst is

•  Nickel

 Platinum

 Cobalt

 All of these

Solution
d

Q4. Na₂S₂O₃

•  Reduces Cu²⁺ to Cu⁺
•  Reduces I₂ to I^-
•  Complexes AgBr as [Ag(S₂O₃)₂]^3-
•  Undergoes all the above are correct

Solution
d

Q5.Select the correct statement(s)

•  Pu⁴⁺disproportionates to Pu³⁺ and PuO₂²⁺ in strongly acidic solution
•  Maximum oxidation state of Np is +7
•  UO₂²⁺ is stable
•  All of the above are correct statements

Solution
d

Q6. Which of the following elements is responsible for oxidation of water to O₂ is biological processes?

•  Fe
•  Cu
• Mn
•  Mo

Solution
c

Q7.When I^- is oxidized by MnO₄^- in alkaline medium, I^- convets into

•  IO₃^-

 I₂

 IO₄^-

 IO^-

Solution
a

Q8.Factors which affect the stability of the compounds are

•  The energy of sublimation
•  The lattice energy
•  The salvation energy
•  All of the above

Solution
d

Q9.Select the incorrect statement(s)

•  Ionisation energies of 5d-elements are greater than those of 3d and 4d element
•  Cu(I) is diamagnetic while Cu(II) is paramagnetic
•  [Ti(H₂O₆ )]³⁺ is coloured while [Sc(H₂ O)₆ ]³⁺ colourless
•   Transition elements cannot form complexes

Solution
d

Q10. Which of the following dissolves in hot conc. NaOH solution?

•  Fe
•  Zn
•  Cr
• Ag

Solution
b

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