AIEEE 2006 | JEE Main Year Wise Previous Years Questions - ExamSIDE.Com

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1

AIEEE 2006

MCQ (Single Correct Answer)

+4

-1

Lanthanoid contraction is caused due to :

A

the appreciable shielding on outer electrons by 4f electrons from the nuclear charge

B

the appreciable shielding on outer electrons by 5d electrons from the nuclear charge

C

the same effective nuclear charge from Ce to Lu

D

the imperfect shielding on outer electrons by 4f electrons from the nuclear charge

2

AIEEE 2006

MCQ (Single Correct Answer)

+4

-1

Nickel (Z = 28) combines with a uninegative monodentate ligand X^– to form a paramagnetic complex [NiX₄]²⁻ . The number of unpaired electron(s) in the nickel and geometry of this complex ion are, respectively

A

one, tetrahedral

B

two, tetrahedral

C

one, square planar

D

two, square planar

3

AIEEE 2006

MCQ (Single Correct Answer)

+4

-1

The IUPAC name for the complex [Co(NO₂)(NH₃)₅]Cl₂ is

A

nitrito-N-pentaamminecobalt (III) chloride

B

nitrito-N-pentaamminecobalt (II) chloride

C

pentaammine nitrito-N-cobalt (II) chloride

D

pentaammine nitrito-N-cobalt (III) chloride

4

AIEEE 2006

MCQ (Single Correct Answer)

+4

-1

How many moles of magnesium phosphate Mg₃(PO₄)₂ will contain 0.25 mole of oxygen atoms?

A

1.25 $$\times$$ 10^-2

B

2.5 $$\times$$ 10^-2

C

0.02

D

3.125 $$\times$$ 10^-2

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