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27 g of A l will react completed with how much mass of O2 to produce Al2O3 24 g of oxygen, 32 g of oxygen , 16 g of oxygen , 8 g of oxygen
Solvent extraction method is particularly useful technique for separation when the product to be separated Non- volatile or thermally unstable , Volatile or thermally stable , Non-volatile or therm
Number of molecules in one dm³ of water is close to 6.02/22.4 X 1023 , 12.04/22.4 X 1023 , 18 /22.4 X 1023 , 55.6 X 6.02 X 1023
London dispersion force are the only forces present among the : Molecules of water in liquid state , Atom of helium in gaseous state at high temperature , Molecule
The molecules of CO2 in dry ice from the : Ionic crystal , Molecular crystals , any type of crystals, Covalent crystalse
Quantum number value for 21 orbitals are : N = 2 / = 1 , n = 1,/= 2 , n = 1, / = 0 , n = 2 , / = 0
The nature of positive rays depend on : The nature of electrode , The nature of Discharge , The nature of residual gas , The te
For a given process the heat changes at constant pressure(qp) and at constant volume (qv) are related to each other qp = qv , qp < qv , qp >qv , q p = qv/2
Which statement about the following equilibrium correct :2SO 2(g) +O 2---? 2 SO 3(g) dalta H = - 188.3kJ/mole The value of kp falls with rise in temperature , The value of kp falls with increase in pressure, A
Ionic product of water (Kw) increase when temperature increase from 0°C to 100°C : 25 times , 75 times , 55 times , 65 times
Which solution has the highest boiling point: 0.0585, 0.18, 0.06, All have the same boiling point
Which statement is not correct about galvanic cell ? Anode is negative charge , cathode is positive charged , reduction occur at anode , reduction oc
Oxidation state of chromium in K2 CrO4 is: 5, 6, 3, 7
The unit of rate constant is the same as that of the rate of reaction in : First order reaction , Second order reaction , Third order reaction , Zero reaction
Acetone and chloroform are soluble in each other due to: Intermolecular hydrogen bonding, Ion-dipole interaction, Instantaneous dipole, All of these
The solubility product of AgCl is 2.0 X 10-10 mole2 dm-6 The maximium concentration of Ag+ ions in the solution : 2.0 X 10-10 mole dm-3 , 1.4 X 10-5 mole dm-3 , 1.0 X 10-10 mole dm-3 , 4.0 X 10-20 mole dm
The existence of a compound in more then one crystalline forms is called : Anisotropy , Isomorphism , Allotropy , Polymorphism
For the reaction NaOH + HCl------à NaCl + H2 O the change in enthalpy is called : Heat of reaction , Heat of formation , Heat of neutralization , Heat of combustion
How many isotopes are present in palladium : 4, 5, 6, 7
The geometry of ethane is Trigonal planar , Linear , V-shaped , Tetrahedral
The unit of the rate constant is the same as that of rate of reaction in : 1st order reaction , 2nd order reaction , 3rd order reaction , Zero order reaction
A solution of glucose is 10% w/v .the volume in which 1 gram mole of it is dissolved will be : 900 cm3 , 200 cm3 , 1.8 dm3 , 1 dm3
The oxidation number of chromium in K2Cr2O7 14, 12, 6, 13
27 g of A l will react completely with how much mass of O2 to produce A l2 O 3 8 g of oxygen , 16 g of oxygen , 32 g of oxygen , 24 g of oxygen
The velocity of photon is : Independent of the wavelength , Depends on its Wavelength, Equal to square of its amplitude, De
Strong the oxidation agent greater is the : Oxidation potential , Reduction potential , Redox pontentional , E.M.F of cell
which of the hydrogen halides has the highest percentage of ionic character ? HI, HCl , HBr , HF
The term Ph was introduced by Henderson , Sorenson , Goldstein , Thomson
Pressure Remaining constant at which temperature of the volume of a gas will become twice of what it is at 0°C 546°C , 200°C , 273 °C , 546 K
The e/m---------value for the positive rays is maximum for : Nitrogen, Oxygen , Helium , Hydrogen
I2 dissolve in water in the presence of KI due to the Formation of : I4, I3 , I- , I2