Sunday

What quantity of heat is required to convert 20 g of ice at 0 ºC to water at the same temperature? (Specific latent heat of ice = 336 Jg−1)

A. 7.06 x 10³J B. 5.38 x 10³J C. 6.72 x 10³J D. 1.35 x 10³J Correct Answer: Option C…

3 years ago

The graph of pressure (P) against the reciprocal of the volume (I/V) in Boyles’s law is a?

A. hyperbola B. parabola C. curve D. straight line Correct Answer: Option A - hyperbola Explanation The pressure (p) of…

3 years ago

The amount of energy required to change a kilogram of ice block into water without a change in temperature is?

A. specific latent heat of fusion of ice B. specific heat capacity of rice C. heat capacity of rice D.…

3 years ago

The eclipse of the moon occurs when?

A. the moon reflects the rays from the sun to the earth B. the moon comes exactly between the earth…

3 years ago

The potential energy in an elastic string of force constant k; which has an extension X is?

A. kX B. KX2 C. ½KX² D. ½K Correct Answer: Option C = ½KX² Explanation elastic potential energy [Ee] =…

3 years ago

In order to view the sun; the most suitable instrument to use is?

A. helioscope B. telescope C. stroboscope D. sun meter Correct Answer: Option A = helioscope Explanation A helioscope is an…

3 years ago

Which component of fiber-optic connector has a provision of entry for the fibre along with the fixation to connector housing?

A. coupling device B. cable C. ferrule D. connector housing Correct Answer: Option A - coupling device Explanation Fiber optic…

3 years ago

In the formation of sea breeze; wind blows from?

A. sky to land B. sea to sky C. land to sea D. sea to land Correct Answer: Option D…

3 years ago

The vapour pressure?

A. increases non-linearly with measuring temperature B. increases linearly with increasing temperature C. decreases linearly with increasing temperature D. decreases…

3 years ago

Water is not a good thermometric liquid because it?

A. expands unevenly between 0 ºC and 4 ºC B. maintains fixed density C. has high freezing point D. wets…

3 years ago