Question is ⇒ The net heat evolved or absorbed in a chemical process, i.e. total change in the enthalpy of the system is independent of the, Options are ⇒ (A) temperature & pressure., (B) number of intermediate chemical reactions involved., (C) state of aggregation & the state of combination at the beginning & the end of the reaction., (D) none of these., (E) , Leave your comments or Download question paper.

Question is ⇒ The net heat evolved or absorbed in a chemical process, i.e. total change in the enthalpy of the system is independent of the, Options are ⇒ (A) temperature & pressure., (B) number of intermediate chemical reactions involved., (C) state of aggregation & the state of combination at the beginning & the end of the reaction., (D) none of these., (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	The net heat evolved or absorbed in a chemical process, i.e. total change in the enthalpy of the system is independent of the
A.	temperature & pressure. [Wrong Answer]
B.	number of intermediate chemical reactions involved. [Correct Answer]
C.	state of aggregation & the state of combination at the beginning & the end of the reaction. [Wrong Answer]
D.	none of these. [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ For an ideal solution, the total vapor pressure varies __________ with the composition(expressed as mole fraction).
inversely
exponentially
linearly
negligibly

⇒ In general, the specific heats of aqueous solutions __________ with increase in the concentration of the solute.
increase
decrease
remain unchanged
none of these

⇒ The ratio of existing moles of vapor per mole of vapor free gas to the moles of vapor that would be present per mole of vapor free gas, if the mixture were saturated at the existing temperature & pressure, is termed as the
relative humidity.
relative saturation.
percentage saturation.
none of these.

⇒ Pick out the wrong unit conversion.
1 atm. = 760 mm Hg = 29.92 inch Hg = 14.7 psi = 1.013 bar = 1.013 kgf/cm²
1 kPa = 100 bar
1 mm Hg = 1 torr = 133.3 Pa
-

⇒ Vapor pressure of a solution is proportional to(where, S_v and S_t are mole fraction of solvent and solute respectively).
S_v
1/S_t
S_t
1/S_v

⇒ One 'Therm' is equivalent to
10⁵ BTU
10⁵ kcal
10⁹ BTU
10⁹ kcal

⇒ Vapor pressure of water at 100°C is about __________ bar.
0.1013
1.013
10.13
101.3

⇒ The heat capacity of a substance is
greater for liquid state than for solid state.
lower for liquid state than for gaseous state.
higher for solid state than for liquid state.
equal for solid and liquid states below melting point.

⇒ How much O₂ can be obtained from 90 kg of water ?
32 kg
80 kg
64 kg
90 kg

⇒ The amount of Zn (atomic weight = 65) required to form 224 c.c. of H₂ at N.T.P. on treatment with dilute H₂SO₄ will be __________ gm.
0.065
0.65
6.5
65

⇒ 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.
2
4
8
16

⇒ Osmotic pressure of a dilute solution of a non volatile solute in a solvent obeying Raoult's law is proportional to the
temperature.
volume of solution.
moles of non-volatile solute.
none of these.

⇒ 'Giga' stands for
10⁹
10^-12
10¹²
10¹⁵

⇒ 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
sizes of the component molecules are approximately equal.
attractive forces between like and unlike molecules are approximately equal.
component molecules are non-polar and no chemical combination or molecular association between unlike molecules takes place in the formation of the solution.
all (a), (b) & (c).

⇒ Saturated solution of benzene in water is in equilibrium with a mixture of air and vapours of benzene and water at room temperature and pressure. Mole fraction of benzene in liquid is x_B and the vapour pressures of benzene and water at these conditions are p_v^B and p_v^w respectively. The partial pressure of benzene in air-vapour mixture is
P_v^B
x_B.P_v^B
(P_atm - P_v^w)x_B
x_B.P_atm

⇒ The molar composition of a gas is 10% H₂, 10% O₂, 30% CO₂ and balance H₂O. If 50% H₂O condenses, the final mole percent of H₂ in the gas on a dry basis will be
0.1
0.05
0.1818
0.2

⇒ A solution with reasonably permanent pH is called a/an __________ solution.
ideal
non-ideal
buffer
colloidal

⇒ The pH value of a solution is 5.9. If the hydrogen ion concentration is decreased hundred times, the solution will be
basic
more acidic
neutral
of the same acidity

⇒ The temperature at which the second Virial co-efficient of a real gas is zero is called the
eutectic point
Boyle temperature
boiling point
critical temperature

⇒ If 1.5 moles of oxygen combines with aluminium to form Al₂O₃, then the weight of aluminium (atomic weight = 27 ) used in this reaction is __________ gm.
27
54
5.4
2.7

⇒ 1 bar is almost equal to __________ atmosphere.
1
10
100
1000

⇒ Pick out the wrong unit conversion.
1 Joule = 4.186 calorie.
1 kcal = 3.968 BTU = 0.00116 kWh = 0.00156 hp.
1 ton of TNT (tri-nitro-toluene) = 4.2 GJ (1G = 10⁹).
1 ft.lbf= 0.3238 calorie = 0.1383 kg.m = 1.356 J = 1.356 N.m.

⇒ Pick out the wrong statement:
The integral heat of solution of either components can not be calculated from heat of mixing data.
The average value of heat of neutralisation of dilute solutions of weak acids and bases is much less compared to that for strong acids and bases.
The standard heat of solution of the hydrate of a substance is the difference between the heat of solution of the anhydrous substance and its heat of hydration.
The accompanying enthalpy change, when a solute is dissolved in solvent, depends upon the nature & amount of the solute & the solvent, on the temperature & on the initial & final concentrations of the solution.

⇒ Kopp's rule is useful for the determination of
molal heat capacities of gases.
heat capacities of solids.
activation energy.
heat capacities of gases.

⇒ Sometimes, in chemical processes, a part of the outlet stream is rejected as waste in order to keep the impurity level in the system within limits. This phenomenon is termed as the
recycling
purging
bypassing
recirculation

⇒ Internal energy is independent of the __________ for an ideal gas.
pressure
volume
both (a) & (b)
neither (a) nor (b)

⇒ At standard conditio
15
30
85
170

⇒ 1 gm mole of methane (CH₄) contains
6.02 x 10²³ atoms of hydrogen.
4 gm atoms of hydrogen.
3.01 x 10²³ molecules of methane.
3 gms of carbon.

⇒ Ideal solution is formed, when its components have zero
heat of mixing.
volume change.
both (a) & (b).
neither (a) nor (b).

⇒ Pick out the wrong statement.
Ten times dilution of a normal solution (N) reduces its normality to N/10.
When equal weights of oxygen and methane are mixed in an empty reactor at room temperature, then the fraction of total pressure exerted by the oxygen is 1/2.
Volume occupied by 9.034 x 10²³ atoms of oxygen in ozone (O₃) at NTP will be 11200 c.c
One kg mole of an ideal gas at N.T.P occupies 22400 Nm³.