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For n moles of a gas, the difference between the molar heat capacity at constant pressure and that at constant volume is equal to "….............".

For N_(2) + 3H_(2) rarr 2NH_(3), enthalpy and internal energy changes respectively are, Delta H " & " Delta U then

For metal sulphide K_(sp) of CuS, CdS, ZnS and MnS respectively 1 xx 10^(-44), 1 xx 10^(-28), 1 xx 10^(-22) and 1 xx 10^(-14) one mixture of solution of Cu^(2+), Cd^(2+) and Mn^(2+). In this solution H_2S gas passed than which one precipitate last.

For MgO_((g)) + C_((g)) hArr Mg_((g)) + CO_((g)) , equilibrium pressure at 2000 K is 100 atm . Now K_(p) for the process is (in atm^(2))

For metal M, first ionisation energy is equal to 38 kcal/mole. Which of the following can be a possible value of ionisation enthalpy of M^(+) ion in kcal.mole at 400K. [Given: R = 2 cal//"mole kelvin"]

For Li^(2+), when an electron falls from a higher orbit to nth orbit, all the three types of lines ,i.e., Luyman, balmer and paschen was found int eh spectrum. Here, the value of 'n'will be

For isothermal process .......... .

For isothermal expansion of an ideal gas, the correct combination of thermodynamic parameters will be

For isomerism……… (i) Geometrical isomers are possible for CHCl=CHCl. (ii) CH_(2)=CHCl has two isomers. (iii) C_(6)H_(4)Cl_(2) has three isomers. (iv) No isomers for chlorobenzene.

For isothermal expansion of an ideal gas into vacuum, among the following how many are zero, Pext, g,Delta T, Delta U, Delta H, Delta S, Delta G, Delta S_("surr"), Delta S_("total")

For ionic substances which is the proper term to use Formula weight or Molecular weight?

For hydrogen atom, Rydberg constant (R_(H)) is xm^(-1). Then for He^(+) ion, the corresponding value of this constant will be

For how many orbitals, the quantum numbers n = 3, l = 2, m = +2 are possible ?

For helium vander Waals parameter bis 0.024 lit/mol. The diameter of helium is nearly

For Haber process, N_(2) +3H_(2) harr 2NH_(3)+Q, K_(P) = 10, find correct statements

For the following process H _(2)O (l) (1 bar 373.15K) hArr H_(2)O (g) (1 bar, 373.15 K ) identify the correct set of thermodynamic parameters.

For H_(2(g)) + I_(2(g)) hArr 2HI_((g)) , the equilibrium constant is K then which of the following is equilibrium constant of this reaction nH_(2(g))+ nI_(2(g)) hArr 2nHI_((g)) ?

For H-atom, the energy required for the removal of electron from various sub-shells is given as under: The order of the energies would be :

For H atom the Bohr radius first orbit is 0.529 Å and the radius of maximum probability for H-atom according to wave mechanical model is also0.529 Å. How do the two approaches differ?

For given simultaneous reaction: X(s)hArrA(g)+B(s)+C(g) K_(P_(1))=500atm Y(s)hArrD(g)+A(g)+E(s) K_(P_(2))=2000atm If total pressure=x, then write your answer after dividing by 25.

For green chemistry...... principle is mentioned.

For gaseous state, if most probable speed is denoted by C^(**), average speed by vecCand mean square speed by C, then for a large number of molecules the ratios of these speeds are :

For gaseous state, if most probable speed is denoated by C^(**), average speed by C and mean square speed by barC, then for a large number of molecules the ratios of these speeds are:

For four elements the IP_2 curve is shown. In the graph the elements represented by A, B, C and D are

for even reaction at a particular temperature, the equilibrium constant has constant value. Is the value of Q also constant? Explain.

For equilibrium mixture PCl_(3(g)) + Cl_(2(g)) hArr PCl_(5(g)).The value of K_c at 250^@ C is 26. The value of K_p at this temperature is ____

For electron affinity of halogen which of the following is correct?

For each of the following,give the level designation,the allowable m values and the number of orbitals.(i)n=4,l=2,(ii)n=5,l=3(iii)n=7,l=0

For each pair, indicate which bond will be stronger a) C-H , Li-F b) Li-F, Mg-Oc) Li - F , Cs - 1

For each of the following substances, identify the intermolecular force or forces that predominate. Using your knowledge of the relative strength of the vaious forces, rank the substance in order of their normal boiling points. Al_(2)O_(3), F_(2), H_(2)O, Br_(2), IC l, NaCl

Foreach of the followingpairspredictwhich one haslowerfirstionization enthalpy ? (i) N or O (ii) Na or Na^(+)(iii) Ba^(+)"or" Mg^(2+)(iv)" or" I^(-)

For each of the following pair of hydrogen orbitals, indicate which is higher in energy ? (a) 1s, 2s (b) 2p, 3p (c) 3d_(xy), 3d_(yz) (d) 3s, 3d (e) 4f, 5s

For each of the following, give the sub level designation, the allowable m values and the number of orbitals (ii) n = 5, l = 3.

For each of the following, give the sub level designation, the allowable m values and the number of orbitals (iii) n = 7, l = 0

For each of the following, give the sub level designation, the allowable m values and number of orbitals.

For each of the following, give the sub level designation, the allowable m values and the number of orbitals (i) n = 4, l = 2.

For each of the following compounds, write a condensed formula and also their bond their formulae. (a) HOCH_(2)CH_(2)CH_(2)CH(CH_(3))CH(CH_(3))CH_(3)(b) {:(""OH),("|"),(N-=C-CH-C-=N):}

For each of the following compounds, write a condensed formula and also their bond-line formula. (a) HO CH_(2) CH_(2) CH_(2) CH (CH_(3)) CH (CH_(3)) CH_(3) (b) N -= C -overset(overset(OH)(|))(CH)- C -=N

For each of the following compounds, write acondensed formula and also their bond-line formula. (a) HOCH_(2)CH_(2)CH_(2)CH(CH_(3))CH(CH_(3))CH_(3) (b) N-=C-overset(OH)overset("|")(CH)-C-=N

For dissociation of NH_(3) giving N_(2) and H_(2) gases, the partial pressures at equilibrium are 100,80,80 torr respectively. If som N_(2) gas is removed and at new equilibrium partial pressure of H_(2) becomes 128 torr then the partial pressure of N_(2) remaining will be approx.

For diatomic molecules, the correct relation is/are

For detection of sulphur in an organic compound, sodium nitroprusside is added to the sodium extract. A violet colour is obtained which is due to the formation of

For decolourization of 1 mole of KMnO_(4) the moles fo H_(2)O_(2) required is

For decolourisation of I mole of acidified KMnO_(4) the moles of H_(2)O_(2)required is ...........

For decolourization of 1 mole of KMnO_4 , the moles of H_2O_2 required is

For decolourisation of 1 mol of KMnO_4 the number of moles of H_2O_2 used is

For decolourisation of 1 molle of acidified KMnO_4 the moles of H_2O_2 required is