1.
The correct order of increasing bond length of C - H,C -O,C - C and C =C is :
2.
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4.
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5.
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6.
According to MO theory, which of the following lists ranks the nitrogen species in terms of increasing bond order ?
7.
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8.
Which of the following species does not exist under normal conditions ?
9.
Which of the following molecules has the maximum dipole moment ?
10.
Which of the following pairs of ions are isoelectronic and isostructural ?
11.
Which of the following is not a correct statement ?
12.
Which of the following species contains equal number of σ- and π bonds ?
13.
Which of the following compounds has the lowest melting point?
14.
Maximum bond angle at nitrogen is present in which of the following?
15.
Which one of the following molecules contains no л-bond?
16.
Which is expected to show paramagnetism ?
17.
Which of the following is paramagnetic ?
18.
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19.
Which of the following species has a linear shape ?
20.
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21.
Four diatomic species are listed below in different sequence Which of these represents the correct order of their increasing bond order ?
22.
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23.
Which of the following pairs of ions is isoelectronic and isostructural ?
24.
Among the following the pair in which the two species are not isostructural is
25.
In which one of the following species, the central atom has the type of hybridisation which is not the same as that present in other three ?
26.
Which of the following statements is not correct for sigma and pi-bonds formed between two carbon atoms?
27.
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28.
Which one of the following orders is not in accordance with the property stated against it?
29.
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30.
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31.
Which of the following is an electron deficient molecule ?
32.
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33.
In which of the following pπ-dπ bonding is observed ?
34.
Which of the following is a polar molecule ?
35.
The correct sequence of increasing covalent character is
36.
Considering the state of hybridisation of carbon atoms, find out the molecule among the following which is linear.
37.
Which of the following two are isostructural ?
38.
The molecule having permanent dipole moment is :
39.
Which molecule has trigonal planar geometry ?
40.
In the case of alkali metals, the covalent character decreases in the order :
41.
The correct order regarding the electronegativity of hybrid orbitals of carbon is :
42.
Which one of the following compounds shows the presence of intramolecular hydrogen bond ?
43.
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45.
The correct order in which the O -- O bond length increases in the following is
46.
Which one of the following pairs is isostructural (i.e., having the same shape and hybridisation)?
47.
Which of the following pairs is isostructural ?
48.
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49.
Which of the following pairs of species have the same bond order ?
51.
Which one of the following molecules will form a linear polymeric structure due to H-bonding ?
52.
Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them :
54.
Which of the following species contains three bond pairs and one lone pair around the central atom?
55.
The correct order of increasing bond angles in the following species is :
56.
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57.
In X ------------ H ------------- Y, X and Y both are electronegative elements
58.
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61.
In which of the following molecules are all the bonds not equal ?
62.
Which of the following has the minimum bond length ?
63.
The correct order of increasing bond angles in the following triatomic species is :
64.
The total number of π-bond electrons in the following structure is
65.
The pair of species with the same bond order is :
66.
Among the following which has the highest cation to anion size ratio ?
67.
Which of the following pairs of compounds is isoelectronic and isostructural ?
68.
The number of unpaired electrons in a paramagnetic diatom molecule of an element with atomic number 16 is :
69.
In which of the following pairs, both the species are not isostructural ?
70.
Which of the following option represents the correct bond order ?
71.
Which of the following is electron-deficient ?
72.
Bond order of 1.5 is shown by :
73.
The correct increasing ionic nature is :
74.
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75.
The correct order of C-O bond length among the following is
76.
Which one of the following species has plane triangular shape ?
77.
In which of the following bond angle is maximum ?
79.
The species, having bond angles of 120° is:
80.
The correct bond order in the following species is:
