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Chemistrysurface-chemistry2015medium
3 g of activated charcoal was added to 50 mL of acetic acid solution (0.06N) in a flask. After an hour it was filtered and the strength of the filtrate was found to be 0.042 N. The amount of acetic acid adsorbed (per gram of charcoal) is:
Chemistryp-block-elements2015easy
Which one has the highest boiling point?
Chemistryp-block-elements2015medium
Which among the following is the most reactive?
Chemistryp-block-elements2015easy
Assertion : Nitrogen and Oxygen are the main components in the atmosphere but these do not react to form oxides of nitrogen. Reason : The reaction between nitrogen and oxygen requires high temperature.
Chemistrychemistry-in-everyday-life2015easy
Which of the following compounds is not an antacid?
Chemistrys-block-elements2015easy
Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy?
Chemistrybasics-of-organic-chemistry2015easy
Which of the following compounds will exhibit geometrical isomerism?
Chemistrybasics-of-organic-chemistry2015easy
In Carius method of estimation of halogens, 250 mg of an organic compound gave 141 mg of AgBr. The percentage of bromine in the compound is: (at. Mass Ag = 108; Br = 80)
Chemistrythermodynamics2015medium
The following reaction is performed at 298 K 2NO(g) + O2 (g) 2NO2 (g) The standard free energy of formation of NO(g) is 86.6 kJ/mol at 298 K. What is the standard free energy of formation of NO2(g) at 298 K? (KP = 1.6 × 1012)
Chemistryaldehydes-ketones-and-carboxylic-acids2015medium
Which compound would give - keto - - methylhexanal upon ozonolysis?
Chemistryaldehydes-ketones-and-carboxylic-acids2015easy
In the following sequence of reactions: The product C is
Chemistrysome-basic-concepts-of-chemistry2015medium
The molecular formula of a commercial resin used for exchanging ions in water softening is C8H7SO3Na (Mol. Wt. 206). What would be the maximum uptake of Ca2+ ions by the resin when expressed in mole per gram resin?
Chemistryisolation-of-elements2015hard
In the context of the Hall-Heroult process for the extraction of Al, which of the following statements is false?
Chemistrysolutions2015easy
The vapour pressure of acetone at 20oC is 185 torr. When 1.2 g of a non-volatile substance was dissolved in 100 g of acetone at 20oC, its vapour pressure was 183 torr. The molar mass (g mol-1) of the substance is:
Chemistrychemical-equilibrium2015medium
The standard Gibbs energy change at 300 K for the reaction 2A B + C is 2494.2 J. At a given time, the composition of the reaction mixture is [A] = 1/2, [B] = 2 and [C] = 1/2. The reaction proceeds in the: [R = 8.314 J/K/mol, e = 2.718]
Chemistrycompounds-containing-nitrogen2015medium
In the reaction The product is :
Chemistryelectrochemistry2015easy
Two Faraday of electricity is passed through a solution of CuSO4. The mass of copper deposited at the cathode is: (at. mass of Cu = 63.5 amu)
Chemistrypolymers2015easy
Which polymer is used in the manufacture of paints and lacquers?
Chemistryd-and-f-block-elements2015easy
The colour of KMnO4 is due to :
Chemistryd-and-f-block-elements2015easy
Match the catalysts to the correct processes : .tg {border-collapse:collapse;border-spacing:0;border:none;border-color:#999;} .tg td{font-family:Arial, sans-serif;font-size:14px;padding:10px 5px;border-style:solid;border-width:0px;overflow:hidden;word-break:normal;border-color:#999;color:#444;background-color:#F7FDFA;} .tg th{font-family:Arial, sans-serif;font-size:14px;font-weight:normal;padding:10px 5px;border-style:solid;border-width:0px;overflow:hidden;word-break:normal;border-color:#999;color:#fff;background-color:#26ADE4;} .tg .tg-p7ly{font-weight:bold;font-size:20px;text-align:center} .tg .tg-4kyz{font-size:20px;text-align:center} Catalyst Process (A) TiCl3 (i) Wacker process (B) PdCl2 (ii) Ziegler - Natta polymerization (C) CuCl2 (iii) Contact process (D) V2O5 (iv) Deacon's process
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