Stoichiometry Mcqs for Chemical

Q.  An insulating refractory brick should have high porosity and low thermal conductivity. Which of the following is not used for inducing porosity in the insulating refractory bricks during its manufacture ?

a. Cork
b. Saw dust
c. Sand
d. Chemically prepared foam


ANSWER: See Answer
 
No explanation is available for this question!
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MCQs:  With rise in temperature, the heat capacity of a substance___________________?
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MCQs:  For a neutral solution (pH = 7), the value of [H+] [OH-] is equal to_________________?
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MCQs:  A compound was found having nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. The formula of the compound is_________________?
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MCQs:  The heat capacity of a solid compound is calculated from the atomic heat capacities of its constituent elements with the help of the___________________?
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MCQs:  A solution with reasonably permanent pH is called a/an _______________ solution?
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MCQs:  Molality is defined as the number of gm moles of solute per _____________ of solvent?
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MCQs:  Weight of 56 litres of ammonia at N.T.P. is _____________ gm?
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MCQs:  Which of the following is the Clausius-Clapeyron Equation ?
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MCQs:  The value of Trouton’s ratio (λb/Tb) for a number of substances is 21 (where, λb = molal that of vaporisation of a substance at its normal boiling point, KCal/kg. mole and Tb = normal boiling point, °K). The Kistyakowsky equation is used for calculation of Trouton’s ratio of _____________ liquids?
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MCQs:  The reverse process of fractional crystallisation is called__________________?
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MCQs:  Pure aniline is evaporating through a stagnant air film of 1 mm thickness at 300 K and a total pressure of 100 KPa. The vapor pressure of aniline at 300 K is 0.1 KPa. The total molar concentration under these conditions is 40.1 mole/m3. The diffusivity of aniline in air is 0.74 × 10-5m2/s. The numerical value of mass transfer co-efficient is 7.4 × 10-3. Its units are_______________________?
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MCQs:  Pick out the wrong unit conversion of thermal conductivity ?
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MCQs:  For any system, the _____________ heat of solution is dependent on the temperature and the adsorbate concentration?
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MCQs:  Which of the following expressions defines the Baume gravity scale for liquids lighter than water ?
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MCQs:  Variation of vapor pressure with temperature can be calculated using Clausius-Clapeyron equation, which assumes that the________________?
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MCQs:  1 gm mole of an alcohol whose molecular weight is 74 contains 48 gms of carbon, 10 gms of hydrogen and 16 gms of oxygen. Its molecular formula is__________________?
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MCQs:  Raoult’s law states that ‘the equilibrium vapor pressure that is exerted by a component in a solution is proportional to the mole fraction of that component’. This generalisation is based on the assumption that the________________?
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MCQs:  The increase in the temperature of the aqueous solution will result in decrease of its________________?
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MCQs:  The vapor pressure of a substance, at its melting point, is _____________ in the solid state as compared to that in the liquid state?
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MCQs:  In case of vapor-liquid equilibria, which of the following does not account for gas phase deviation from ideality ?
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