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.Management Sciences
Category: Chemistry Basic Concept
Which of the following methods is used to estimate hydrogen in an organic compound ?
A. Combustion method
B. Dumas method
C. Kjeldahls method
D. All of the above methods are for different purposes
Which of the following points are important in connection with equilibrium constant ?
A. Kc is constant at given temperature
B. Kc is unaffected by change in concentration of reactants or products
C. Kc indicates the extent of reaction but not about the rate of reaction.
D. All of the above
Purines and pyrimidines are_________________?
A. Enzymes
B. Nitrogenous bases
C. Carbohydrates
D. Lipids
Avogadros number may represent_________________?
A. volume of particles
B. number of particles
C. mass of particles
D. All of the above
In solids the temperature is the measure of__________________?
A. Average kinetic energy of molecules
B. Vibrational kinetic energy
C. Translational kinetic energy
D. None of the above
Which of the following statements about isotopes is correct ?
A. Isotopes with odd atomic number are abundant
B. Isotopes with odd atomic number and even mass number are abundant
C. Isotopes with even atomic number and even mass number are abundant
D. Isotopes with even atomic number and odd mass no are abundant
The number of moles of CO2 which contains 16 g of oxygen is__________________?
A. 0.25
B. 0.5
C. 0.75
D. 1
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