Inorganic Chemistry (CSIR Chemical Sciences): Questions 68 - 72 of 207

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Question number: 68

» Inorganic Chemistry » Organometallic Compounds » Bonding and Structure and Reactivity

Appeared in Year: 2012

MCQ▾

Question

For the molecule

Structure of molecule given here

Structure of Molecule Given Here

Structure of molecule given here

Choose the correct option at room temperature.

  1. ’HNMR has singlets at 5.48 and 3.18 ppm

  2. ’HNMR has multiplet at 5.48 and singlet 3.18 ppm

  3. IR has CO stretching bands at 1950 and 1860 cm1

  4. IR has only one CO stretching bend at 1900 cm1 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: 69

» Inorganic Chemistry » Structure and Bonding in Homo-and Heteronuclear Molecules (VSEPR Theory)

Appeared in Year: 2011

MCQ▾

Question

In molecules H2O , NH3 and CH4 ________ (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: 70

» Inorganic Chemistry » Organometallic Compounds » Bonding and Structure and Reactivity

Appeared in Year: 2012

MCQ▾

Question

In a cluster H3CORu3(CO)12, total no. of e involved in its formation.

Choices

Choice (4) Response

a.

72

b.

60

c.

57

d.

63

Question number: 71

» Inorganic Chemistry » Structure and Bonding in Homo-and Heteronuclear Molecules (VSEPR Theory)

Appeared in Year: 2011

MCQ▾

Question

Among SF4 , BF4 , XeF4 and ICl4 , 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: 72

» Inorganic Chemistry » Organometallic Compounds » Bonding and Structure and Reactivity

Appeared in Year: 2013

MCQ▾

Question

Though cyclobutadine (C4H4) 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 C4H42

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 C4H42+ .

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