19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
If I2 is dissolved in aqueous KI, the intense yellow species 3I is formed. The structure of 3I ions is (DUMET 2009)
A covalent molecule AB3 has a pyramidal structure. The number of lone pair and bond pair of electrons in the molecule are respectively (KCET 2009)
What is the dominant intermolecular force or bond that must be overcome in converting liquid CH3OH to a gas? (AIPMT 2009)
Which of the following has the lowest boiling point? (Punjab PMET 2008)
The angular shape of ozone molecule (O3) consists of (CBSE AIPMT 2008)
Which of the following is weakest? (BHU 2008)
Least ionized salt is (RPMT 2007)
Electron deficient molecule is (RPMT 2007)
The boiling points at atmospheric pressure of HF, H2S, NH3 can be arranged in the following order:
The order number of the boiling points of the given compounds is
An ether is more volatile than alcohol having the same molecular formula. This is due to
What happens to the London forces, if the number of electrons increases?
Which of the following hydrogen bonds is the strongest?
o-nitrophenol can be easily steam distilled whereas p-nitrophenol cannot be. This is because of :
The correct order of the strength of H-bonds is:
Which one of the following molecules will form a linear polymeric structure due to hydrogen bonding?
What type of intermolecular forces are due to the attraction between temporary dipoles and their induced temporary dipoles?
Which of the following molecule can form a hydrogen bond?
Which of the following molecules do show the hydrogen bonding? I. CCl3CH(OH)2 II. o-hydroxy benzoic acid
The boiling point of a substance increases with increase in
Metallic bond is.
Which of the following molecules have same bond order? H2, He2, C2 and O2
Accordingly MO theory (a) O is paramagnetic and bond order is greater than O2. (b) Ois paramagnetic and bond order is less than O2. (c) Ois diamagnetic and bond order is less than O2. (d) Ois diamagnetic and bond orde…
Using MO theory, predict which of the following species has the shortest bond length? (a) O (b) O (c) O (d) O Ans. (d) Sol. As we know, Bond length 1/bond order. In option A, Ohas bond order 2.5 In option B, Ohas bo…
Which one of the following is not paramagnetic?