19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following pairs of species have identical shapes? (a) NO and NO
The shapes of XeF4, Θ XeF and SnCl2 are:
Which is not correctly matched?
Which of the following are isoelectronic and isostructural? NO ,CO ,ClO ,SO (a) NO ,CO (b) SO ,NO (c) ClO ,CO (d) CO ,ClO Ans. (a) Sol. Both have 32 electrons and have trigonal planar shape.
FAsF bond angle in AsF3Cl2 molecule is:
VBT theory is based on the
The valence bond theory explains the shape, the formation and directional properties of bonds in polyatomic molecules like CH4, NH3 and H2O etc., in terms of
Which of the following does not represent positive overlap? (a) (b) (c) (d) Ans. (b) Sol. Out of phase overlap occurs in (b) Thus, it shows negative overlap.
The strength of covalent bond ___________ extent of overlapping of orbitals. a) may be or may not be related to b) is independent on c) is dependent on d) is not related to Ans. (c) Sol. As per the concept of valence …
The strength of bonds formed by s-s, p-p and p-s overlap has the order:
In a compound the number of sigma and pi bonds respectively are :
The boiling point of a substance increases with increase in
Which of the following molecules do show the hydrogen bonding? I. CCl3CH(OH)2 II. o-hydroxy benzoic acid
Which of the following molecule can form a hydrogen bond?
What type of intermolecular forces are due to the attraction between temporary dipoles and their induced temporary dipoles?
Which one of the following molecules will form a linear polymeric structure due to hydrogen bonding?
The correct order of the strength of H-bonds is:
o-nitrophenol can be easily steam distilled whereas p-nitrophenol cannot be. This is because of :
Which of the following hydrogen bonds is the strongest?
What happens to the London forces, if the number of electrons increases?
An ether is more volatile than alcohol having the same molecular formula. This is due to
The order number of the boiling points of the given compounds is
The boiling points at atmospheric pressure of HF, H2S, NH3 can be arranged in the following order:
Electron deficient molecule is (RPMT 2007)
Least ionized salt is (RPMT 2007)