Related Questions

Based on the information below, how much did a certain telephone call cost? 1. The call lasted 1 minute 27 seconds 2. The cost for the first 30 second unit is Tk. 1.80, call duration more than 30 seconds costs Tk. 0.90 per 30 second unit 3. Any call duration less than 30 seconds is rounded up to the nearest 30-second unit.
A Tk. 1.80
B Tk. 2.61
C Tk. 2.70
D Tk. 3.51
Total number of telephone calls is 'n' call charge is Tk. 'p' per call. Then total call charge is:
A ( n + p)
B (n-p)
C (n *p)
D (none of them)
Total number of telephone calls is ‘n’, call charge is TK. ‘p’ per call. Then total call charge is:
A (n+p)
B (n-p)
C np
D none of then
The heat energy released when water vapour changes to a liquid is called:
A Latent heat of evaporation
B Latent heat of fusion
C Latent heat of fission
D Latent heat of condensation
The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure, is called
A Humidity ratio
B Relative humidity
C Absolute humidity
D Degree of saturation
The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure, is called
A Humidity ratio
B Relative humidity
C Absolute humidity
D Degree of saturation
A mixture of dry air and water vapour, when the air has diffused the maximum amount of water vapour into it, is called
A Dry air
B Moist air
C Saturated air
D Specific humidity
A liquid under pressure greater than its vapour pressure for the temperature involved is called a __________ liquid.
A Subcooled
B Saturated
C Non-solidifiable
D None of these
The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and re-condensed, then the liquid with the next higher boiling point is then evaporated and re-condensed, and so on until all the available liquid fuels are separately recovered in the sequence of their boiling points. Such a process is called
A Cracking
B Fractional distillation
C Full distillation
D Carbonisation
Water changes -- vapour. Fill up the gap.
A for
B with
C into
D in

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