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61
Othmer chart is useful in estimating the heat of
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Answer: Option C
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62
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
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Answer: Option B
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63
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
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Answer: Option C
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64
What is the simplest formula of a compound containing 50% of element A (atomic weight = 10) and 50% of element B (atomic weight = 20)?
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Answer: Option A
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65
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.
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Answer: Option A
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66
If pH value of an acidic solution is decreased from 5 to 2, then the increase in its hydrogen ion concentration is __________ times.
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Answer: Option C
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67
The heat capacity of a solid compound is approximately equal to the sum of the heat capacities of the constituent elements. This is the statement of
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Answer: Option B
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68
In the reaction, represented by Na2CO3 + HCl → NaHO3 + NaCl, the equivalent weight of Na2CO3 is
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Answer: Option C
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69
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
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Answer: Option B
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70
Gases having same reduced temperatures and reduced pressures
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Answer: Option C
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