The complex showing a spin-only magnetic moment of 2.82 B.M. is:

1. Ni(CO)4

2. [NiCl4]2-

3. Ni(PPh3)4

4. [Ni(CN)4]2-

2.82 B.M. के चक्रण-मात्र चुंबकीय आघूर्ण को दिखाने वाला संकुल है:

(1) Ni(CO)4

(2) [NiCl4]2-

(3) Ni(PPh3)4

(4) [Ni(CN)4]2-

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The d-electron configurations of Cr2+, Mn2+, Fe2+ and CO2+ are d4, d5, d6 and d7

respectively. Which one of the following will exhibit minimum paramagnetic behaviour?

(At. no. Cr = 24, Mn =25, Fe=26, CO=27)

1. [Fe(H2O)6]2+

2. [Co(H2O)6]2+

3. [Cr(H2O)6]2+

4. [Mn(H2O)6]2+

 

 

Cr2+, Mn2+, Fe2+ और CO2+ के d-इलेक्ट्रॉन विन्यास क्रमशः d4, d5, d6 और dहै। निम्नलिखित में से कौन सा न्यूनतम अनुचुम्बकीय व्यवहार प्रदर्शित करेगा?

(परमाणु क्रमांक Cr = 24, Mn =25, Fe=26, CO=27)

(1) [Fe(H2O)6]2+

(2) [Co(H2O)6]2+

(3) [Cr(H2O)6]2+

(4) [Mn(H2O)6]2+

 

 

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[Fe(H2O)6]2+ and [Fe(CN)6]4- differ in :

1. geometry, magnetic moment                 

2. geometry, hybridization

3. magnetic moment, colour                       

4. hybridization, number of d-electrons

[Fe(H2O)6]2+ और [Fe(CN)6]4-  कैसे भिन्न है:

(1) ज्यामिति, चुंबकीय आघूर्ण           (2) ज्यामिति, संकरण

(3) चुंबकीय आघूर्ण, रंग                 (4) संकरण, d-इलेक्ट्रॉनों की संख्या

 58%
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Which of the following is not an ambidentate ligand?

1. CN-

2. NO2-

3. SCN-

4. NH3

निम्नलिखित में से कौन सा एक उभयदंती लिगेंड नहीं है?

1. CN-

2. NO2-

3. SCN-

4. NH3

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Which of the following complexes is used to be as an anticancer agent?

1. mer-[Co(NH3)3Cl3         

2. cis-[PtCI2(NH3)2]

3. cis-K2[PtCl2 Br2]           

4. Na2CoCl4

निम्नलिखित में से कौन सा संकुल एक प्रतिकैंसर कर्मक के रूप में उपयोग किया जाता है?

(1) रेखांशिक-[Co(NH3)3Cl3

(2) समपक्ष -[PtCI2(NH3)2]

(3) समपक्ष -K2[PtCl2 Br2]

(4) Na2CoCl4

 69%
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How many hydrate isomers are possible for the molecular formula CoCl3,6H2O?

1. One

2. Two

3. Three

4. Four

अणु सूत्र CoCl3,6H2O के लिए कितने हाइड्रेट समावयव संभव हैं?

1. एक 

2. दो 

3. तीन 

4. चार 

 67%
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Which one of the following octahedral complexes will not show geometrical isomerism?(A and B are monodentate ligands)

1. [MA4B2]

2. [MA5B]

3. [MA2B4]

4. [MA3B3]

निम्नलिखित में से कौन सा अष्टफलकीय संकुल ज्यामितीय समवयवता नहीं दिखाएगा? (A और B एकदंती लिगेंड हैं)

(1) [MA4B2]

(2) [MA5B]

(3) [MA2B4]

(4) [MA3B3]

 63%
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[Fe(H2O)6]3+ and [Fe(CN)6]3- differ in

(1) Magnetic nature

(2) Oxidation number

(3) Co-ordination number

(4) Structure

[Fe(H2O)6]3+ और [Fe (CN)6]3- किसमें भिन्न है?

(1) चुंबकीय प्रकृति

(2) ऑक्सीकरण संख्या

(3) उपसहसंयोजन संख्या

(4) संरचना

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The number of ions formed in K4[Fe(CN)6] are

1. 11

2. 5

3. 4

4. 9

K4[Fe(CN)6] में निर्मित आयनों की संख्या हैं 

(1) 11

(2) 5

(3) 4

(4) 9

 60%

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Three arrangements are shown for the complex [CoBr2(NH3)2(en)]. Which one is wrong statement?

(a) I and II are geometrical isomers 

(b) II and III are optically active isomers 

(c) I and III are optically active isomers

(d) II and III are geometrical isomers

 

संकुल [CoBr2(NH3)2(en)] के लिए तीन व्यवस्थाएं दिखाई गई हैं। कौन सी गलत कथन है?

(1) I और II ज्यामितीय समावयवी हैं

(2) II और III प्रकाशिक सक्रिय समावयवी हैं

(3) I और III प्रकाशिक सक्रिय समावयवी हैं

(4) II और III ज्यामितीय समावयवी हैं

 

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