Chemistry Test 100

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Chemistry Test 100

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Weekly Quiz Competition

Question 1
4 / -1

Hybridisation of which complex in correctly matched :-

A
AuCl₄^– – sp³

B
Co[(oxalato)₃]^3––sp³ d²

C
RhCl(pph₃)₃–dsp²

D
[Fe(NH₃)₆]²⁺ – d²sp³

Solution

(A) AuCl₄^–– dsp²

(B) [Co(OX)₃]^3– – d²sp³

(C) RhCl(PPh₃)₃ – dsp²

(D) [Fe(NH₃)₆]²⁺ – sp³d²
Question 2
4 / -1

Coinage metals show properties of :-

A
Typical elements

B
Normal elements

C
Inner transition elements

D
Transition elements

Solution

Cu,Ag, Au
Question 3
4 / -1

Oxidation state of K in K₂O, K₂O₂, KO₂ :-

A
+1, +1, +1

B
+1, +2, +1

C
+1, +2, +2

D
+1,+4,+2

Solution

Oxidation state of o in superoxide is (–1/2) & in peroxide is (–1).
Question 4
4 / -1

Metal with low melting point contains impurities of high melting point can be purified by :

A
zone refining

B
vapour phase refining

C
Distillation

D
Liquation

Solution

Liquation is used for metals having impurities with high melting point..
Question 5
4 / -1

n = 5, m_s = –1/2, How many orbitals are possible :-

A
25

B
30

C
50

D
35

Solution

According to (n + ℓ) rule

n = 5

5s → 1 (orbital)

5p → 3

5d → 5

5f → 7

5g → 9

⇒ 5H not possible
Question 6
4 / -1

The radius of La⁺³ is 1.06 Å, which of the following given values will be closest to the radius of Lu⁺³ (atomic no. of La = 57) (atomic no. of Lu is 71).

A
1.09 Å

B
1.4 Å

C
1.06 Å

D
0.85 Å
Question 7
4 / -1

Which of the following pair will release maximum energy on gaining one electron :-

A
P) = Cl, (Q) = S, (R) = Li

B
(P) = Cl, (Q) = Se, (R) = Li

C
(P) = F, (Q) = Se, (R) = Na

D
(P) = Cl, (Q) = Se, (R) = Na

Solution

Electron affinity increases across period and decreases down the group.
Question 8
4 / -1

Nitriles can be converted into Amine by reaction with :-

A
Na(Hg)/EtoH

B
LiAlH₄

C
H₂/Ni

D
All of these

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Re-Attempt Weekly Quiz Competition

Chemistry Test 100

Result

Chemistry Test 100

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Question 1

AuCl4– – sp3

Co[(oxalato)3]3––sp3 d2

RhCl(pph3)3–dsp2

[Fe(NH3)6]2+ – d2sp3

Solution

Question 2

Typical elements

Normal elements

Inner transition elements

Transition elements

Solution

Question 3

+1, +1, +1

+1, +2, +1

+1, +2, +2

+1,+4,+2

Solution

Question 4

zone refining

vapour phase refining

Distillation

Liquation

Solution

Question 5

25

30

50

35

Solution

Question 6

1.09 Å

1.4 Å

1.06 Å

0.85 Å

Question 7

P) = Cl, (Q) = S, (R) = Li

(P) = Cl, (Q) = Se, (R) = Li

(P) = F, (Q) = Se, (R) = Na

(P) = Cl, (Q) = Se, (R) = Na

Solution

Question 8

Na(Hg)/EtoH

LiAlH4

H2/Ni

All of these

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AuCl₄^– – sp³

Co[(oxalato)₃]^3––sp³ d²

RhCl(pph₃)₃–dsp²

[Fe(NH₃)₆]²⁺ – d²sp³

LiAlH₄

H₂/Ni