Physics question and answers for July 02, 2023
- Q Pressure is determined as force per unit area of the surface The SI unit of pressure pascal is 1 Pa 1 Nm 2 If mass of air at sea level...
- Q 3 Determine the wavelength and frequency of the radiation having the longest wavelength in Lyman series of hydrogen atom R 109678 cm Ans Rydberg s equation R 11 In case...
- Q Considering the following ionisation steps A g A g e AH 100 eV A g A g e AH 250 eV Select the correct statements A IE of A g...
- Q When the electron moves in an elliptical orbit the nucleus remains at one of the foci
- Q One litre of oxygen containing 1 argon is passed over heated copper and heated magnesium till no further reduction in volume took place the volume finally contained by gas would...
- Q tal energy of an electron revolving energy of an electron revolving in n th orbit En Kinetic energy Potential energy mv 1 r Ze r 1 Ze Ze 1 m...
- Q KAMA Calculate the shortest and longest wavelengths i Lyman series of hydrogen spectrum
- Q A 2 0 B 0 2 65 The four quantum numbers of the outermost orbital of K atomic no 19 are 1 A n 2 1 0 m 0 s...
- Q A 20 litre container at 400 K contains CO g at pressure 0 4 atm and an excess of SrO neglect the volume of solid SrO The volume of the...
- Q During the working of a galvanic cell and with the passage of time 1 Spontaneity of the cell reaction decreases E decreases 2 Reaction quotient Q decreases Ell increases cell...
- Q Wave number of a spectral line in the Lyman seri of H atom is 82260 cm 1 Show that this line ha appeared in this series due to the return...
- Q If same energy is supplied to electron in ground state of Hydroger as well as He electron jump to 5th main shell in Hydrogen then final orbit of electron in...
- Q 29 Iron in nature exists in three isotopic forms Fe54 Fe56 Fe57 The percentage abundance of Fe54 and Fe57 are equal and the average atomic mass of Fe is 55...
- Q The I P of an atom is 16eV What are wrong values of the value of first excitation potential A 10 2 eV B 12 eV C 14 eV D...
- Q 6 3 7R 144 cm 1 1 x eV 4 3 2x eV 9R 400 In a hydrogen atom if the energy of electron in the ground state is x...
- Q In the complex Ni H O NH3 4 2 the magnetic moment u of Ni is 1 Zero 3 1 73 BM 2 2 83 BM 4 3 87 BM
- Q Q58 For an orbital in B4 radial function is R r 1 Z 9 6 ao 3 14 where o 4 0 e 0 2 Zr and a 0 529...
- Q Consider the following statements Mod A S Cr NH 1 is a inner orbital complex with crystal field stabilization energy equal to 1 2 A S The complex formed by...
- Q In an atom has 2K 8 L 18 M and 2N in the ground state the total number of electron having magnetic quantum number m 0 is 2 10 1...
- Q The P E of an e in a perticular shell of H atom is 3 02 eV then calculate the radius of that perticular shell 1 4 761 3 2...
- Q Which of the following represent the first excited state of sulphur 1 1 111 2 1 111 3 1 111 4 1 1 1 1 11
- Q 3 Main axis of a diatomic molecule is z orbital p and p overlap with each other to form which of th following molecular orbitals 1 molecular orbital 2 o...
- Q Which of the following formulae expresses the law of equivalent correctly m E E a m b E E m m
- Q The frequency of radiation emitted when the electron falls from n 4 to n 1 in a hydrogen atom will be Given ionization energy of H 2 18 x 10...
- Q 74 If the uncertainity in position and velocity is same then the value of Ax is 1 Ax 3 Ax h m 2 2m 2 AX 4 Ax 2 m...
- Q 74 Among the triatomic molecules ions BeCl N3 N O NO2 O3 SCI ICl2 I3 and XeF the total number of linear molecules s ion s where the hybridization of...
- Q 4 The nodal plane in the bond of ethene is located in A the molecular plane B a plane parallel to the molecular plane C a plane perpendicular to the...
- Q Which of the following sets of quantum numbers represents 2007 the highest energy of an atom a n 3 1 0 m 0 s 1 2 b n 3 1...
- Q 5 ASF molecule is trigonal bipyramidal The orbitals of As atom involved in hybridisation are a d d S PxPy b dxy S Px Pp Pz c S Px Py...
- Q 6 The potential energy of the electron present in the ground state of Li2tion is represented by 38 a b TEO c 4TE OT d 3e 4TE OF 3e 4TE...
- Q 22 How many times does the electron go round the first Bohr s orbit of hydrogen in one second
- Q Based on Laws of chemical combination which of the following statement is correct 1 In compound A 1 00g nitrogen combines with 0 57g oxygen In compound B 2 00g...
- Q Number of peroxide linkage in CrO5 H SO5 H S O8 are respectively 1 2 1 2 2 2 2 2 3 1 1 1
- Q When 6x10 5g of a protective colloid was added to 20 mL of a standard gold sol the precipitation of latter was just prevented on addition of 2 mL of...
- Q 9 In hydrogen atom energy of first excited state is 3 4 eV Then find out K E of same orbit of hydrogen atom a 3 4 eV c 13...
- Q The radius of the second Bohr orbit for hydrogen atom is Planck s Constant h 6 6262x10 34 Js mass of electron 9 1091x10 31kg charge of electron e 1...
- Q If the energy absorbed by each X molecule of a gas is 3 5 x 10 19 J and the bond energy of X is 180 6 kJ mol 1...
- Q 20 The angular momentum of an electron in a Bohr s orbit of H atom is 42178x10 34 kg m sec wavelength ing Calculate the spectral life emitted when electron...
- Q 1 The correct set of four quantum numbers for the valence electrons of rubidium atom Z 37 is a 5 0 0 1 2 1 c 5 1 1 2...
- Q 2 What is the nature of the bond between B and O in C H5 2OBF3 a Covalent c Ionic bond b Coordinate covalent d Banana shaped bond
- Q of electrons in the orbitals belonging to the same subshell does not take place until bers and Hund s rule of maximum multiplicity pairing vo electrons in an atom can...
- Q Number of maximum possible electron s in Zn for which n l 4 is 2 uto 4 2n 1 4 3 8 2 6 4 12 2x16
- Q Subjective 65 The number of water molecule s directly bonded to the metal centre in CuSO4 5H O is 66 Based on VSEPR theory the number of 90 degree F...
- Q P 49 2 3 An excited Li 2 ion emitted a photon corresponding to the second line of Balmer series This photon liberated an electron from the stationary atom in...
- Q 5 Which of the following has covalent as well as ioni bond a NaCl b NaOH c H O d HC1
- Q 1 In a hydrogen atom if energy of an electron in ground state is 13 6 eV then that in the 2nd excited state is AIEEE 2002 a 1 51...
- Q 50 The distance of separation between third and fourth orbit of Li2 is 1 1 23 A 3 2 82 A 2 0 41 A 4 1 41 A
- Q 3 AsF5 trigonal bipyramidal 4 H O bent 109 Which of the following conversions involves change in both shape and hybridisation 1 BF3 BF4 2 H O H O 3...
- Q D 1 shaped Statement 1 p Hydroxybenzoic Statement 2 o Hydroxybenzoic acid has a lower boiling point than o hydroxybenzoic acid acid has intramolecular hydrogen bonding A Statement 1 is...
- Q 6 The given graph shows the vapour pressure temperature curves for some liquids V P A B D TI Liquids A B C and D respectively are a diethyl ether...
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