Description : In which of the folowing molecules, vacant orbitals do not participate in bonding :-
Last Answer : In which of the folowing molecules, vacant orbitals do not participate in bonding :- A. `B_(2)H_(6)` B. `Al_(2) ... H_(3)N.BF_(3)]` D. `Si_(2)H_(6)`
Description : Which of the following molecules does NOT have a dipole moment of zero? w) BeCl2 x) BF3 y) CO2 z) NH3
Last Answer : ANSWER: Z -- NH3
Description : Which of the following molecules has a permanent electric dipole moment? w) H2O x) Cl2 y) CH4 z) N2
Last Answer : ANSWER: W -- H2O
Description : Which of the following molecules has a dipole moment? w) BF3 x) NH3 y) CCL4 z) CH4
Last Answer : ANSWER: B -- NH3
Description : For which molecule can the bonding be described in terms of sp3 hybrid orbitals of the central atom? w) CH4 x) SF6 y) BF3 z) PCL5
Last Answer : ANSWER: B -- CH4
Description : Which of the following compounds have non zero dipole moment.
Last Answer : Which of the following compounds have non zero dipole moment. A. `C Cl_(4)` B. C. D.
Description : Which of the following fluorides of Xe has zero dipole moment ?
Last Answer : Which of the following fluorides of Xe has zero dipole moment ? A. `XeF_(2)` B. `XeF_(6)` C. `XeF_(4)` D. Both (1) & (3)
Description : The fluoride of Xenon with zero dipole moment is
Last Answer : The fluoride of Xenon with zero dipole moment is A. `XeF_(6)` B. `XeO_(3)` C. `XeF_(4)` D. `XeO_(2)F_(2)`
Description : Which of the following compounds will have zero dipole moment? (a) cis-1,2-dibromoethylene (b) 1,1-dibromoethylene (c) trans-1,2-dibromoethylene (d) all of these
Last Answer : trans-1,2-dibromoethylene
Description : What is dipole dipole bonding?
Last Answer : too
Description : Arrange the following types of interactions in correct order of their increasing strength : Covalent, hydrogen bonding, Vander Waals, dipole dipole
Last Answer : Vander Waals < dipole dipole < hydrogen bonding < covalent.
Description : What type of intermolecular interactions does (CH3CH2)2NH undergo? (a) induced dipole-induced dipole (b) dipole-dipole (c) hydrogen bonding (d) all of these
Last Answer : all of these
Description : What is the strongest intermolecular force present in liquid ethanol? (a) induced dipole-induced dipole (b) dipole-dipole, specifically hydrogen bonding (c) dipole-dipole, but not hydrogen bonding (d) ion-dipole
Last Answer : dipole-dipole, specifically hydrogen bonding
Description : Which of the following is the strongest interaction? (a) a covalent bond (b) dipole-dipole interactions (c) hydrogen bonding (d) van der Waals
Last Answer : a covalent bond
Description : Which force is most important in allowing ammonia, NH3, to dissolve in water? A hydrogen bonding B dipole-induced dipole C ion-dipole D dipole-dipole E ionic
Last Answer : A hydrogen bonding
Description : The boiling points of the halogens increase going from F2 to I2. What type of intermolecular forces are responsible for this trend? w) permanent dipole x) hydrogen bonding y) ion-ion attraction z) London dispersion forces
Last Answer : ANSWER: Z -- LONDON DISPERSION FORCES
Description : Which of these molecules has an overall dipole mome?
Last Answer : Which of these molecules has an overall dipole mome
Description : Use the information and data given below to answer the questions Stronger intermolecular forces result in higher boiling point Strength of London forces increases with the number of electrons in the molecule ... here? (c) Why is the boiling point of HF highest while that of HCl lowest?
Last Answer : Ans :( a) In the molecules HCl, HBr and HI, dipole-dipole interaction and London forces are present. (b) Dipole moment of HCl > HBr > HI but boiling point of HCl < HBr
Description : What would happen if dipole develops momentarily in atoms and non polar molecules which are electrically symmetrical?
Last Answer : Ans. London forces or dispersion forces are developed.
Description : What happens between water molecules in hydrogen bonding?
Last Answer : Feel Free to Answer
Description : Sodium chloride, potassium chloride, magnesium oxide are examples of molecules with (a) Covalent bonding (b) Ionic bonding (c) Metallic bonding (d) Hydrogen bonding
Last Answer : Ans:(b)
Description : The bonding of the molecules in water is called?
Last Answer : Polar bonding
Description : Covalent network crystals have-------? A. higher melting point then molecular crystals (Answer) B. lower melting point then molecular crystals C. discrete molecules linked by Van der waals forces D. hydrogen bonding
Last Answer : A. higher melting point then molecular crystals (Answer)
Description : Honey contain glucose and fructose along with some other ingredients, it has greater viscosity due to------? A. hydrogen bonding B. irregular shape of the molecules C. irregular shape of the molecules and strong inter-molecular forces (Answer) D. greater molecular size
Last Answer : C. irregular shape of the molecules and strong inter-molecular forces (Answer)
Description : Which action best accounts for the solubility of aldehydes and ketones in water? (a) Polar interactions between solute molecules. (b) H-bonding between solute molecules. (c) Van der waals forces (d) H-bonding between solute and solvent molecules
Last Answer : H-bonding between solute and solvent molecules
Description : Which of the following terms refers to the number of molecules or ions attached to a central metallic atom? w) coordination number x) connection number y) bonding number z) none of these
Last Answer : ANSWER: W -- COORDINATION NUMBER
Description : sp3 Why is the angle between hybrid orbitals 109 degrees 26 ' ?
Last Answer : : A s orbital and three p orbitals of the conjugate layer overlap and form a sp3 hybrid orbital. The balanced sp3 orbital is directed along the four angles of any regular tetrahedron. And between the orbitals the angle 109 ৮ 26 ' is present and the structure is quadratic.
Description : Two hybrid orbitals have a bond angle of `120^(@)`. The percentage of p character in the hybrid orbital is nearly :-
Last Answer : Two hybrid orbitals have a bond angle of `120^(@)`. The percentage of p character in the hybrid orbital is nearly ... 25%` B. `33%` C. `50%` D. `66%`
Description : What is bond angle between the hybrid orbitals in methane? (a) 180° (b) 120° (c) 109.5° (d) 115.5°
Last Answer : 109.5°
Description : What bond angle is associated with sp3 (read: S - P - hybrid orbitals?
Last Answer : ANSWER: 109.5 DEGREES
Description : What bond angle is associated with sp hybrid orbitals
Last Answer : ANSWER: 180 DEGREES
Description : In which type of molecule, the dipole moment may be nonzero (L `to` Lone pair ) :-
Last Answer : In which type of molecule, the dipole moment may be nonzero (L `to` Lone pair ) :- A. `AB_(2)L_(2)` B. `AB_(2)L_(3)` C. `AB_(4)L_(2)` D. `AB_(4)`
Description : Compare dipole moment of the following `CH_(3)-CH_(2)-C=CH , CH_(3)-C=C-CH_(3)`
Last Answer : Compare dipole moment of the following `CH_(3)-CH_(2)-C=CH , CH_(3)-C=C-CH_(3)`
Description : Define the terms : a. Polarizability b. Hydrogen bond c. Aqueous tension d. Dipole moment
Last Answer : Define the terms : a. Polarizability b. Hydrogen bond c. Aqueous tension d. Dipole moment
Description : Which molecule has a dipole moment?
Last Answer : H2S
Description : If a polar molecule has a charge of 4.8 * 10^ (-10) and internuclear distance is 1A then what is its dipole moment ?
Last Answer : 4.8 * 10-10 e.s.u * 1A0 4.8 * 10-10 * 10-8 4.8 * 10-18 e.s.u – Cm = 4.8 Debye Give the mathematical expression to calculate or measure the percentage of ionic Character. % of Ionic Character = (Observed dipole moment / Dipole moment of 100% ionic bond)*100
Description : Water is a good solvent of ionic salts because - (1) It has no colour (2) It has a boiling point (3) It has a high dipole moment (4) It has a high specific heat
Last Answer : (3) It has a high dipole moment
Description : Magnetic dipole moment is a vector quantity directed from which direction?
Last Answer : South to north
Description : Phenol has smaller dipole moment than methanol. (OR) Why are dipole moments of phenols smaller than dipole moments of alcohols ?
Last Answer : Due to electron-withdrawing effect of the benzene ring, the C — O bond in phenol is less polar but in case of methanol due to electron-donating effect of — CH3 group, C — O bond is more polar.
Description : Find the current in a dipole with a moment of 16 units and area of 9 units. a) 1.78 b) 2.78 c) 1.87 d) 2.34
Last Answer : a) 1.78
Description : Find the orbital angular moment of a dipole with angular velocity of 1.6m/s and radius 35cm(in 10-31 order) a) 1.78 b) 8.71 c) 7.18 d) 2.43
Description : Find the orbital dipole moment in a field of dipoles of radius 20cm and angular velocity of 2m/s(in 10 -22 order) a) 64 b) 76 c) 54 d) 78
Last Answer : a) 64
Description : Polarizability is defined as the a) Product of dipole moment and electric field b) Ratio of dipole moment to electric field c) Ratio of electric field to dipole moment d) Product of dielectric constant and dipole moment
Last Answer : b) Ratio of dipole moment to electric field
Description : The best definition of polarisation is a) Orientation of dipoles in random direction b) Electric dipole moment per unit volume c) Orientation of dipole moments d) Change in polarity of every dipole
Last Answer : b) Electric dipole moment per unit volume
Description : The permittivity is also called a) Electrostatic energy b) Dielectric constant c) Dipole moment d) Susceptibility
Last Answer : b) Dielectric constant
Description : Debye is the unit used to measure a) Permittivity b) Electric dipole moment c) Magnetic dipole moment d) Susceptibility
Last Answer : b) Electric dipole moment
Description : Calculate the distance between two charges of 4C forming a dipole, with a dipole moment of 6 units. a) 1 b) 1.5 c) 2 d) 2.5
Last Answer : b) 1.5
Description : Calculate the dipole moment of a dipole with equal charges 2C and -2C separated by a distance of 2cm. a) 0.02 b) 0.04 c) 0.06 d) 0.08
Last Answer : b) 0.04
Description : Which of the following compounds has maximum dipole moment? (a) p-Dichlorobenzene (b) m-Dichlorobenzene (c) o-Dichlorobenzene (d) Carbon tetrachloride
Last Answer : o-Dichlorobenzene