Description : Among noble gases, Xe is quite reactive and form a number of fluorides and oxyfluorides. In these compounds the electrons, from 5p orbitals are excite
Last Answer : Among noble gases, Xe is quite reactive and form a number of fluorides and oxyfluorides. In these ... B. Square pyramid C. square planar D. octahedral
Last Answer : Among noble gases, Xe is quite reactive and form a number of fluorides and oxyfluorides. In these compounds ... `XeF_(2)` and tetraheddral `XeO_(3)`
Last Answer : Among noble gases, Xe is quite reactive and form a number of fluorides and oxyfluorides. In these compounds the ... ` C. `XeO_(2)F_(2)` D. Xe
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 : The angle between the bonding orbitals of a molecules `AX_(3)` with zero dipole moment is
Last Answer : The angle between the bonding orbitals of a molecules `AX_(3)` with zero dipole moment is A. `120^(º)` B. `109^(º)` C. `104^(º)` D. `180^(º)`
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 : 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 : From the elements: Cl, Br, F, O, Al, C, Li, Cs and Xe; choose the following: (a) The element with highest negative electron gain enthalpy. (b) The element with lowest ionization enthalpy. ( ... . (f)The element which belongs to zero group. (g) The elements which forms largest number of compounds.
Last Answer : Ans. (a). The element chlorine (Cl) has the highest negative electron gain enthalpy. (b). The element cesium (Cs) has lowest ionization enthalpy. (c). The element fluorine F has lowest atomic radius. (d ... zero group (or group 18). (g). The element carbon (C) forms the largest number of compounds.
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
Description : The pH at which the amino acid shows no tendency to migrate when placed in an electric field is known as its : (a) Isoelectric point (b) Dipole moment (c) Iodine number (d) Wavelength
Last Answer : Isoelectric point
Description : Which of the following compounds have highest dipole moment? (a) dichloromethane (b) chloroform (c) chloromethane (d) carbon tetrachloride
Last Answer : dichloromethane
Description : Which molecule has the greatest dipole moment (a) CH3Cl (b) CH3Br (c) CH3F (d) CH3I
Last Answer : CH3F
Description : Which of the following compounds have lowest dipole moment? (a) carbon tetrachloride (b) chloromethane (c) dichloromethane (d) chloroform
Last Answer : carbon tetrachloride
Description : Which molecule has a nonzero dipole moment? (a) Cl2 (b) CO2 (c) CCl4 (d) CHCl3
Last Answer : CHCl3
Description : Which of the following compounds will show dipole moment? (a) cis-1,2-dichloroethylene (b) o-dichlorobenzene (c) trans-1,2-dichloroethylene (d) p-dichlorobenzene
Last Answer : cis-1,2-dichloroethylene o-dichlorobenzene
Description : A compound will be sensitive towards IR radiation only when one of the following properties undergo transition on (A) Polarizability (B) Dielectric constant (C) Dipole moment (D) Refractivity
Last Answer : (C) Dipole moment
Description : he dipole magnetic moment (μ) is directly proportional to nuclear spin (I), connected by a constant called the A. Gyromagnetic ratio (γ) B. Planck's constant (h) C. Nuclear susceptibility (χ) D. Chemical shift (δ)
Last Answer : Gyromagnetic ratio (γ)
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 : 1. Who was the first General-Secretary of the Indian National Congress? 2. Which first Bank was established in India? 3. Magnetic dipole moment is a vector quantity directed from which direction? 4. How much ... 19. Which is the largest river in the world? 20. Who was known as 'Andhra Bhoja'?
Last Answer : Answer : 1. Dadabhai Naoroji 2. Bank of Hindustan 3. South to north 4. 966 million kms 5. Sheep 6. Nitrogen 7. Constitution of Canada 8. Dr. Neelam Sanjiva Reddy 9. The horse latitude 10. ... . Kharoshti 16. 69th Amendment 17. Preparation of the plan 18. September 19 19. Amazon 20. Krishnadeva Raya
Description : Does the temperature of tap water affect fluoride's effectiveness in protecting teeth?
Last Answer : https://fluorideresearch.org/484/files/FJ2015_v48_n4_p338-344_sfs.pdf
Description : Hydrogen fluorides is a liquid at room temperature due to
Last Answer : Hydrogen fluorides is a liquid at room temperature due to A. dimerisation B. dissociation followed by aggregation C. association D. polymerisation
Description : Which of the following xenon-OXO compounds may not be obtained by hydrolysis of xenon fluorides?
Last Answer : Which of the following xenon-OXO compounds may not be obtained by hydrolysis of xenon fluorides? A. (1) `XeO_2F_2` ... C. (3) `XeO_3` D. (4) `XeO_4 `
Description : The formation of `O_(2)^(+)[PtF_(6)]^(-)` is the basis for the formation of xenon fluorides. This is because:
Last Answer : The formation of `O_(2)^(+)[PtF_(6)]^(-)` is the basis for the formation of xenon ... energies. D. `O_2` and Xe have comparable electronegativities.
Description : Alkali metal hydrogen fluorides have a formula `M[HF_2]`. They are found to contain a linear symmetrical anion having an overall F—H—F distance of 2.2
Last Answer : Alkali metal hydrogen fluorides have a formula `M[HF_2]`. They are found to contain a linear symmetrical ... F-atoms through two T bonds in the anion.
Description : Among noble gases, only xenon reacts with flourine to form stable xenon fluorides, because xenon
Last Answer : Among noble gases, only xenon reacts with flourine to form stable xenon fluorides, because xenon A. ... D. is the most readily available noble gas
Description : What causes the mottling of the dental enamel? (1) High levels of chlorine in water (2) High levels of nitrate in the water (3) High levels of fluorides in the water (4) High levels of calcium in the water
Last Answer : (3) High levels of fluorides in the water Explanation: The mottling of dental enamel is an extremely common disorder, characterized by hypomineralization of tooth enamel caused by ingestion of ... toothpaste, use of fluoride tablets, and consumption of processed foods made with fluoridated water.
Description : Why are transition metal fluorides are ionic in nature where as chlorides and bromides are covalent in nature .
Last Answer : Ans - It is because of fluorine is most electronegative where as Cl and Br are less electro negative . Greater the difference in electro negativity more will be ionic character .
Description : Ultraviolet radiations from sunlight causes a reaction that produces (a) fluorides (b) carbon monoxide (c) sulphur dioxide (d) ozone.
Last Answer : (d) ozone.
Description : Pick out the wrong statement. (A) Loamy soil is the best soil for vigorous plant growth, while the clayey soil is solid and hence the plant roots penetrate with difficulty (B) Large ... vegetables (D) Cereal crops grown on alkaline soil absorb higher amount of fluorides thereby spreading fluorosis
Last Answer : (C) Application of large excess of Potassic fertiliser in soil increases the valuable carotene in fruits and vegetables
Last Answer : High levels of fluorides in the water