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The number of bound in oxygen molecule is : One o and one TT , One o and two TT , Three sigma only , Two sigma only
When 50 % reactants in a reversible reaction are converted are converted into a product , the value of equilibrium constant KC is : 2 , 1 , 3 , 4
Pressure remaining constant, at which temperature the volume of a gas will become twice of what it is at 0 °C : 546°C , 200°C , 546°C , 273°C
Molarity of Pure water is : 1 , 18 , 55.5 , 6
The wave number of the light emitted by a certain is 2 X 106 cm-1 The Wavelength of this light will be: 500nm , 500m , 200nm , 5X107 m
The oxidation number of Cl in HClO4 is : +2 , +3 , +5 , +7
The boiling point of water at the top of Mount Everest is : 59°C , 69°C , 83°C , 75°C
2.7 g of Al will react completely with how much mass of O2 to produce Al2 O3 : 0.8 g of oxygen , 1.6 g of oxygen , 3.2 g of oxygen , 2.4 g of oxygen
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
The PH of 10-3 mol dm-³ of an aqueous solution of H2SO4 : 3.0 , 2.7 , 2.0 , 1.5
Bohr model of atom is contradicted by : Plamk’s quantum , Dual nature of matter , Heisenberg’s uncertainty principal , All of
The substance used for decolourization of undesirable colour in a crystalline substance is : H2SO4 , Silica gel , NaNO3 , Animal Charcoal
which of the following is a Psedosolid : NaBr , Glass , AgNo3 , Naphthalein
Equal masses of methane and oxygen are mixed in an empty container at 25°CS .The fraction of total pressure exerted by oxygen is : 1/3, 8/9, 1/9, 16/17
Which of the hydrogen halides has the highest percentage of ionic character : HF, HCl, HBr, HI
The enzyme used for hydrolysis of Urea is Invertase, Urease, Lipase, Zymase
The mass of two moles of electrons is 1.10 mg, 1.008 mg, 0.184 mg, 1.673 mg
Which of the following has zero diploe moment : H2S , H 2O , BF3, NH 3
An excess of aqueous AgNO 3 is added to aqueous BaCl2 solution .The precipitate is removed off .The filter contains Ag+ and NO3- ions, Ag+ ,Ba+2 and NO3 -ions , Ba+2 and NO3 only, Ba+2 , NO3 and Cl- ions
In dry ice CO2 molecules form : Ionic crystals , Covalent crystals , Molecular crystals , Any type of crystal
Molarity of pure water is : 1, 18, 6, 55.5
Orbitals having same energy are called : Hybrid orbitals , Valence orbit , Degenerate orbitals , d- orbitals
In H2SO4 the oxidation number of S is : +2, +6, +8, +4
Pressure remaining constant at which temperature the volume of gas will become twice of what it is at 0°C 546°C , 200°C , 546K, 273°C
Volume occupied by 1.4 g of N2 at S.T.P. is : 2.24 dm3, 22.4 dm3 , 1.12 dm3 , 112.03
Which of the following has highest bond energy : HF, HCl , HBr , HI
The PH of 10-3 molar H2SO4 solution is 1.5, 2, 2.7, 3
When 6 d orbit is complete the entering electron goes to : 7f, 7s, 7p, 7d
At what external pressure the boiling point of water will be 110°C : Any value of pressure , 765 torr , Between 200 torr and 760 torr , Between 760 torr and 12
In solvent extraction the law applied is : Law of mass action , Distribution law , Coulomb’s law , Boyle’s Law
The volume of one mole CO is maximum at : S.T.P , 127 ° and 1 atm , 0° and 2 atm , 273° and 2 atm
One calorie is equal : 4.184 J , 0.4184 J , 41.84 J , 418.4 J
The rate of recation : Increase as the reaction proceeds , Decreased as the reaction proceeds , Remains the same as r
The number of carbon atoms in 22.0 g of CO2 is : 3.01 X 1022 , 6.02 X 1023 , 3.01 X 1022 , 6.02 X 1022