1.
Which one of the following pairs is isostructural (i.e., having the same shape and hybridisation)?
2.
Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them :
3.
The correct order of C-O bond length among the following is
4.
Read the question given below
5.
Which of the following is an electron deficient molecule ?
6.
Which of the following option represents the correct bond order ?
7.
Which of the following species has a linear shape ?
8.
The species, having bond angles of 120° is:
9.
Read the question given below
10.
Which one of the following species has plane triangular shape ?
11.
In which of the following bond angle is maximum ?
12.
Which of the following molecules has the maximum dipole moment ?
13.
Read the question given below
14.
The correct order of increasing bond length of C - H,C -O,C - C and C =C is :
15.
Which of the following compounds has the lowest melting point?
16.
Read the question given below
17.
Which of the following two are isostructural ?
18.
Which of the following pairs of species have the same bond order ?
19.
The correct increasing ionic nature is :
20.
Read the question given below
21.
Which of the following statements is not correct for sigma and pi-bonds formed between two carbon atoms?
22.
In which of the following molecules are all the bonds not equal ?
23.
Read the question given below
24.
The correct order of increasing bond angles in the following triatomic species is :
26.
Read the question given below
27.
The total number of π-bond electrons in the following structure is
28.
The pair of species with the same bond order is :
29.
Maximum bond angle at nitrogen is present in which of the following?
32.
Which molecule has trigonal planar geometry ?
33.
Read the question given below
34.
In which of the following pairs, both the species are not isostructural ?
35.
The number of unpaired electrons in a paramagnetic diatom molecule of an element with atomic number 16 is :
36.
Which one of the following compounds shows the presence of intramolecular hydrogen bond ?
38.
Which of the following species contains equal number of σ- and π bonds ?
39.
Read the question given below
40.
In the case of alkali metals, the covalent character decreases in the order :
41.
The correct sequence of increasing covalent character is
42.
Which of the following is not a correct statement ?
43.
Read the question given below
44.
Which of the following has the minimum bond length ?
45.
Which of the following is electron-deficient ?
46.
Among the following which has the highest cation to anion size ratio ?
47.
Which of the following pairs is isostructural ?
48.
Which one of the following molecules contains no л-bond?
49.
Read the question given below
50.
The correct order in which the O -- O bond length increases in the following is
51.
Read the question given below
52.
Which of the following is a polar molecule ?
53.
Which is expected to show paramagnetism ?
55.
The correct order regarding the electronegativity of hybrid orbitals of carbon is :
56.
Which of the following pairs of compounds is isoelectronic and isostructural ?
57.
The correct order of increasing bond angles in the following species is :
58.
According to MO theory, which of the following lists ranks the nitrogen species in terms of increasing bond order ?
59.
Read the question given below
61.
Which of the following species contains three bond pairs and one lone pair around the central atom?
62.
Read the question given below
63.
Which of the following is paramagnetic ?
64.
The correct bond order in the following species is:
65.
Read the question given below
66.
Read the question given below
67.
Which of the following pairs of ions is isoelectronic and isostructural ?
68.
In which of the following pπ-dπ bonding is observed ?
69.
Which one of the following orders is not in accordance with the property stated against it?
70.
Considering the state of hybridisation of carbon atoms, find out the molecule among the following which is linear.
71.
In X ------------ H ------------- Y, X and Y both are electronegative elements
72.
Among the following the pair in which the two species are not isostructural is
73.
Bond order of 1.5 is shown by :
74.
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 ?
75.
Which of the following pairs of ions are isoelectronic and isostructural ?
76.
Which one of the following molecules will form a linear polymeric structure due to H-bonding ?
78.
The molecule having permanent dipole moment is :
79.
Four diatomic species are listed below in different sequence Which of these represents the correct order of their increasing bond order ?
80.
Which of the following species does not exist under normal conditions ?
