CSIR Chemical Sciences: Questions 113 - 117 of 427
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 427 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.
Rs. 300.00 or
Question number: 113
» Inorganic Chemistry » Organometallic Compounds » Bonding and Structure and Reactivity
Appeared in Year: 2012
Question
For the molecule
Structure of Molecule Given Here
Structure of molecule given here
Choose the correct option at room temperature.
-
’HNMR has singlets at 5.48 and 3.18 ppm
-
’HNMR has multiplet at 5.48 and singlet 3.18 ppm
-
IR has CO stretching bands at 1950 and 1860
-
IR has only one CO stretching bend at 1900 correct pair of statement.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 1 and 4 |
|
| b. | 2 and 3 |
|
| c. | 1 and 3 |
|
| d. | 2 and 4 |
|
Question number: 114
» Inorganic Chemistry » Structure and Bonding in Homo-and Heteronuclear Molecules (VSEPR Theory)
Appeared in Year: 2011
Question
In molecules , and ________ (June)
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Bond distances are same. |
|
| b. | Shapes are same. |
|
| c. | Hybridization is same. |
|
| d. | Bond angles are same. |
|
Question number: 115
» Inorganic Chemistry » Organometallic Compounds » Bonding and Structure and Reactivity
Appeared in Year: 2012
Question
In a cluster total no. of involved in its formation.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 72 |
|
| b. | 60 |
|
| c. | 57 |
|
| d. | 63 |
|
Question number: 116
» Inorganic Chemistry » Structure and Bonding in Homo-and Heteronuclear Molecules (VSEPR Theory)
Appeared in Year: 2011
Question
Among , , and , the number & species having 2 lone pairs of electrons on the central atom according to VSEPR theory is (June)
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 0 |
|
| b. | 3 |
|
| c. | 2 |
|
| d. | 4 |
|
Question number: 117
» Inorganic Chemistry » Organometallic Compounds » Bonding and Structure and Reactivity
Appeared in Year: 2013
Question
Though cyclobutadine is highly unstable, & readily polymerises in its free state, its transition metal complexes could be isolated because
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | It gains stability due to formation of |
|
| b. | It engages in long-range interaction with transition metal. |
|
| c. | Its polymerization ability reduces in presence of transition metal. |
|
| d. | It becomes stable in presence of transition metals due to formation of . |
|