Q.1
In the reaction, represented by Na₂CO₃ + HC₁ → NaHO₃ + NaCl, the equivalent weight of Na₂CO₃ is
Q.2
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 amount of water vapour condensed (in kg) is
Q.3
Othmer chart is useful in estimating the heat of
Q.4
The heat capacity of a substance is
Q.5
Osmotic pressure of the solution can be increased by
Q.6
The crystallisation of a solute from a solution may be done by
Q.7
Roult's law is obeyed by a __________ solution.
Q.8
Gases having same reduced temperatures and reduced pressures
Q.9
In case of a solution (not of a solid in a liquid), whose total volume is less than the sum of the volumes of its components in their pure states, solubility is
Q.10
In case of a solution (not of a solid in a liquid), whose total volume is more than the sum of volumes of its components in their pure states, solubility is
Q.11
What is the simplest formula of a compound containing 50% of element A (atomic weight = 10) and 50% of element B (atomic weight = 20)?
Q.12
A rigid vessel containing three moles of nitrogen gas at 30°C is heated to 250°C. Assume the average capacities of nitrogen to be Cp = 29.1 J/mole.°C and, Cv = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is
Q.13
__________ kg of CaCO₃ on heating will give 56 kg of CaO.
Q.14
The net heat evolved or absorbed in a chemical process, i.e. total change in the enthalpy of the system is independent of the
Q.15
Pick out the wrong statement.
Q.16
The unit of dynamic viscosity is
Q.17
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.
Q.18
With rise in temperature, the heat capacity of a substance
Q.19
Heat of neutralisation of HCl and NaOH is - 57.46 kJ/Kg mole. The heat of ionisation of water will be __________ kJ/Kg mole.
Q.20
The increase in the temperature of the aqueous solution will result in decrease of its
Q.21
Internal energy is independent of the __________ for an ideal gas.
Q.22
Viscosity of atmospheric air may be about __________ centipoise.
Q.23
The value of (Cp - Cv)for a real gas obeying Vander Wall's equation is
Q.24
For an endothermic reaction, the minimum value of energy of activation will be (where, ΔH = enthalpy of the reaction)
Q.25
Under conditions of equal reduced pressure and equal reduced temperature, substances are said to be in the 'corresponding states'. At equal reduced conditions i.e., at the corresponding state, the __________ of different gases are nearly the same.
Q.26
The temperature at which real gases obey the ideal gas law over a wide range of pressure is called the __________ temperature.
Q.27
The pH value of a solution is 5.9. If the hydrogen ion concentration is decreased hundred times, the solution will be
Q.28
A gas mixture contains 6 moles of H₂ and 2 moles of N₂. If the total pressure of the gaseous mixture is 4 kgf/cm² ; then the partial pressure of N₂ in the mixture will be __________ kgf/cm² .
Q.29
Pick out the wrong unit conversion of heat transfer rate.
Q.30
A fluid gas produced on burning furnace oil contains 0.15 gm mole of CO₂, 0.05 gm mole of oxygen and 0.80 gm mole of N₂. What is its molecular weight?
Q.31
Measurement of the amount of dry gas collected over water from volume of moist gas is based on the
Q.32
Pick out the wrong statement about the recycle stream in a process.
Q.33
Which of the following is not a unit of length?
Q.34
1 BTU/ft³ is approximately equal to __________ kcal/m³.
Q.35
The hydroxyl ion (OH?) concentration in a solution having pH value 3 will be
Q.36
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
Q.37
Solutions having the same osmotic pressure are called __________ solutions.
Q.38
In general, the specific heats of aqueous solutions __________ with increase in the concentration of the solute.
Q.39
Unit of power is
Q.40
For water evaporating into usaturated air under adiabatic conditions and at constant pressure, the __________ remains constant throughout the period of vaporisation.
Q.41
Enthalpy of formation of NH₃ is - 46 kJ/kg mole. The enthalpy change for the gaseous reaction, 2NH₃ → N₂ + 3H₂, is equal to __________ kJ/kg. mole.
Q.42
Variation of vapor pressure with temperature can be calculated using Clausius-Clapeyron equation, which assumes that the
Q.43
1 kg/m² is equal to __________ mm water column.
Q.44
Which of the following terms of Vander Walls equation of state for a non-ideal gas accounts for intermolecular forces?
Q.45
Colligative properties of a dilute solution are those, which depend entirely upon the
Q.46
Colligative properties of a dilute solution are those which depend entirely upon the
Q.47
Osmotic pressure exerted by a solution prepared by dissolving one gram mole of a solute in 22.4 litres of a solvent at 0°C will be __________ atmosphere.
Q.48
In a chemical process, the recycle stream is purged for
Q.49
Pick out the wrong conversion formula for the conversion of weight units :
Q.50
Molality is defined as the number of gm moles of solute per __________ of solvent.
0 h : 0 m : 1 s