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611

0.5kg of water at 10^oC is completely converted to ice by extracting 188000J of heat from it. If the specific heat capacity of water is 4200J kg^-1C^-1, calculate the specific latent heat of fusion of ice.

A. 9.0 KJ kg^-1
B. 84.0 KJ kg^-1
C. 168.0 KJ kg^-1
D. 334.0 KJ kg^-1
E. 336.0 KJ kg^-1

View Answer & Discuss (4) WAEC 1988

612

The temperature at which the water vapour present in the air is just sufficient to saturate it is called the

A. ice point
B. boiling point
C. steam point
D. dew point
E. saturation point

View Answer & Discuss (2) WAEC 1988

613

Which of the following instrument may be used to measure the relative humidity?

A. Hydrometer
B. Barometer
C. Manometer
D. Hypsometer
E. Hygrometer

View Answer & Discuss (5) WAEC 1988

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614

Which of the following will affect the saturation vapour pressure of a liquid?

A. Temperature of the liquid
B. Humidity of air
C. Volume of vapour
D. Volume of the liquid
E. mass of the liquid

View Answer & Discuss (2) WAEC 1988

615

Which of the following statements is/are not correct about image formed by a plane mirror?
I. The magnification produced is 1
II. The image distance is same as the object distance
III. The image is real
IV. The image is laterally inverted

A. I only
B. II only
C. III only
D. I & II only
E. II & IV only

View Answer & Discuss (11) WAEC 1988

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