Stoichiometry Basic Questions - Set 08 - ObjectiveBooks

Stoichiometry Basic Questions - Set 08

Practice Test: Question Set - 08


1. Heat of reaction is a function of the
    (A) Pressure
    (B) Temperature
    (C) Both (a) & (b)
    (D) Neither (a) nor (b)

2. "The total volume occupied by a gaseous mixture is equal to the sum of the pure component volumes". This is the __________ law.
    (A) Dalton's
    (B) Amagat’s
    (C) Gay-Lussac’s
    (D) Avogadro's

3. The average translational kinetic energy with which a gas molecule is endowed is dependent on its
    (A) Nature
    (B) Size
    (C) Absolute temperature
    (D) All (a), (b) & (c)

4. Internal energy is independent of the __________ for an ideal gas.
    (A) Pressure
    (B) Volume
    (C) Both (a) & (b)
    (D) Neither (a) nor (b)

5. 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
    (A) Recycling
    (B) Purging
    (C) Bypassing
    (D) Recirculation

6. Recycling in a chemical process facilitates
    (A) Increased yield
    (B) Enrichment of product
    (C) Heat conservation
    (D) All (a), (b) &(c)

7. The vapor pressure of liquids (having similar chemical nature) at any specified temperature ________ with increasing molecular weight.
    (A) Increases
    (B) Decreases
    (C) Remains unchanged
    (D) Increases linearly

8. The temperature at which a real gas obeys Boyle's law is termed as the
    (A) Triple point
    (B) Boyle's temperature
    (C) Eutectic point
    (D) Inversion temperature

9. Pick out the wrong statement.
    (A) Ten times dilution of a normal solution (N) reduces its normality to N/10
    (B) 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
    (C) Volume occupied by 9.034 × 1023 atoms of oxygen in ozone (O3) at NTP will be 11200 c.c
    (D) One kg mole of an ideal gas at N.T.P occupies 22400 Nm3

10. A long cylinder and a sphere both of 5 cms diameter are made from the same porous material. The flat ends of cylinder are sealed. Both the cylinder and sphere are saturated with the same solution of sodium chloride. Later both the objects are immersed for a short and equal interval of time in a large tank of water which is well agitated. The fraction of salt remaining in the cylinder and the sphere are Xc and Xs respectively. Which of the following statement is correct?
    (A) Xc > Xs
    (B) Xc = Xs
    (C) Xc < Xs
    (D) Xc greater/less than Xs depending on the length of the cylinder

11. Enthalpy of a vapor gas mixture may be increased by increasing the
    (A) Temperature at constant humidity
    (B) Humidity at constant temperature
    (C) Temperature and the humidity
    (D) All (a), (b) & (c)

12. The density of a gas at N.T.P.is 'ρ'. Keeping the pressure constant (i.e. 760 mm Hg), the 3 density of the gas will become ¾ 0.75 ρ at a temperature of ________ °K.
    (A) 273°
    (B) 300°
    (C) 400°
    (D) 373°

13. During a phase change process like sublimation, vaporization, melting etc., the specific _________ does not change.
    (A) Enthalpy
    (B) Gibbs free energy
    (C) Internal energy
    (D) Entropy

14. An aqueous solution of 2.45% by weight H2SO4 has a specific gravity of 1.011. The composition expressed in normality is
    (A) 0.2500
    (B) 0.2528
    (C) 0.5000
    (D) 0.5055

15. The maximum adiabatic flame temperature of fuels in air is _________ the maximum flame temperature in pure oxygen.
    (A) Lower than
    (B) Higher than
    (C) Same as
    (D) Not related to

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