A. Conversion of graphite to diamond
B. Decomposition of water
C. Dehydrogenation of ethane to ethylene
D. None of these
Correct Answer: None of these ✔
Last Updated: March 05, 2019
Related MCQs
- Number of gram equivalent of solute dissolved in one litre of solution is called its__________?
- Kopp’s rule is helpful in finding the__________?
- Solution made by dissolving equimolar amounts of different solutes in the same amount of a given solvent will have the__________?
- Mass number of an atom is the sum of the numbers of__________?
- Which of the following is not a unit of pressure ?
- The heat of adsorption of a gas caused by Van der Waals forces of attraction and capillarity is equal to the heat of__________?
- 1 BTU/ft3 is approximately equal to __________ kcal/m3?
- A solution is made by dissolving 1 kilo mole of solute in 2000 kg of solvent. The molality of the solution is__________?
- Avogadro number is the number of molecules in one __________ of a gas?
- Which equation is not an equation of state ?
- A sample of well water contains 140 gm/m3 Ca2+ ions and 345 gm/m3 Na+ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO3 in gm/m3 is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16) ?
- For a reaction, X → Y, if the concentration of ‘X’ is tripled; the rate becomes nine times. The order of reaction is__________?
- 1 kg/cm2 is equal to__________?
- One kg of saturated steam at 100°C and 1.01325 bar is contained in a rigid walled vessel. It lias a volume of 1.673 m3. It cools to 98°C; the saturation pressure is 0.943 bar ; one kg of water vapour under these conditions has a volume of 1.789 m3. The latent heat of condensation (kJ/kg-1 ) under these conditions is__________?
- The hydroxyl ion (OH-) concentration in a solution having pH value 3 will be__________?
- For estimation of heat capacity of a solid compound, one can use__________?
- 40 gms each of the methane and oxygen are mixed in an empty container maintained at 40°C. The fraction of the total pressure exerted by oxygen is__________?
- Which of the following holds good for a solution obeying Raoult’s law (i.e., an ideal solution) (where, ΔH = heat of mixing, and ΔV = volume change on mixing) ?
- The heat change for the reaction, C(s) + 2S(s) → CS2(l), is 104.2 kJ. It represents the heat of__________?
- Raoult’s law is obeyed by a __________ solution?
- On addition of 1 c.c. of dilute hydrochloric acid (1% concentration) to 80 c.c. of a buffer solution of pH = 4, the pH of the solution becomes__________?
- Cp equals Cv at__________?
- Which of the following ratios defines the recycle ratio in a chemical process ?
- N2 content in a urea sample was found to be only 42%. What is the actual urea content of the sample? (Molecular weight of urea = 60) ?
- The number of atoms of oxygen present in 11.2 litres of ozone (O3) at N.T.P. are__________?
- Diffusion is that property by virtue of which a perfume bottle when opened up in a room, makes the whole room fragrant with its smell. If a perfume ‘X’ diffuses twice as fast as another perfume ‘Y’; what is the molecular weight of ‘Y’, if the vapor density of gas ‘X’ is 2? Molecular weight of gas ‘X’ is to be assumed to be 2 ?
- A metal oxide is reduced by heating it in a stream of hydrogen. After complete reduction, it is found that 3.15 gm of the oxide has yielded 1.05 gm of the metal. It may be inferred that the __________?
- The osmotic pressure of a solution increases, if its __________ is decreased?
- The effect of pressure on the heat capacity of the gases __________ is negligible?
- The weight fraction of methanol in an aqueous solution is 0.64. The mole fraction of methanol XM satisfies__________?
- Which of the following expressions defines the Baume gravity scale for liquids heavier than water ?
- A bypass stream in a chemical process is useful, because it__________?
- At standard conditions, N2 + 2O2 ⇌ 2NO2; ΔG° = 100 kJ/mole NO + ½O2 ⇌ 2NO2; ΔG° = -35 kJ/mole The standard free energy of formation of NO in kJ/mole is__________?
- Validity of the relationship, inputs = outputs, holds good for the system at steady state__________?
- Kopp’s rule is concerned with the calculation of__________?
- Viscosity of atmospheric air may be about __________ centipoise?
- Pick out the wrong unit conversion of heat transfer co-efficient?
- The rate of material __________ is zero in case of a steady state system?
- Refluxing of part of the distillate in a fractionating column is a ‘recycling operation’, aimed primarily at__________?
- If the absolute temperature of an ideal gas is tripled and simultaneously the pressure is reduced to one third; then the volume of gas will __________?
- Simultaneous doubling of the absolute temperature of a gas and reduction of its pressure to half will result in __________ in the volume of the gas?
- The unit of Cp in S.I. units is__________?
- In the reaction, represented by Na2CO3 + HC1 → NaHO3 + NaCl, the equivalent weight of Na2CO3 is__________?
- Real gases approach ideal behaviour at__________?
- Cp – Cv for an ideal gas is equal to__________?
- The vapor pressure of the solvent decreased by 10 mm Hg, when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent, if the decrease in vapor pressure of the solvent is required to be 20 mm Hg ?
- One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH4 + 2O2 → CO2 + 2H2O. Both the reactants and products are in gas phase. ΔH°298 = – 730 kJ/mole of methane. Mole fraction of water vapour in the product gases is about__________?
- At higher temperature, molal heat capacities of most of the gases (at constant pressure) __________ with increase in temperature?
- For water evaporating into unsaturated air under adiabatic conditions and at constant pressure, the __________ remains constant throughout the period of vaporisation ?
- Kinematic viscosity of 1 m2 /second is equivalent to __________ stokes?
- A vessel of volume 1000 m3 contains air which is saturated with water vapour. The total pressure and temperature are 100 kPa and 20°C respectively. Assuming that the vapour pressure of water at 20°C is 2.34 kPa, the amount of water vapour (in kg) in the vessel is approximately ?