Question

A geyser, operating on LPG (liquefied petroleum gas) heats water flowing at the rate of 30 litres per minute, from 27°C to 77°C. If the heat
of combustion of LPG is 4.0 x 10^Jg- how much fuel in grams is consumed per minute?
(A) 1525
(B) 155
(C) 15.75
(D) 16

Answer 1

Answer:

Hold me close 'til I get up

Time is barely on our side

I don't wanna waste what's left

The storms we chase are leading us

And love is all we'll ever trust, yeah

No, I don't wanna waste what's left

And on and on we'll go

Through the wastelands, through the highways

'Til my shadow turns to sunrays

And on and on we'll go

Through the wastelands, through the highways

And on and on we'll go

Oh, on we'll go

Finding life along the way

Melodies we haven't played

No, I don't want no rest

Echoing around these walls

Fighting to create a song

I don't wanna miss a beat

And on and on we'll go

Through the wastelands, through the highways

'Til my shadow turns to sunrays

And on and on we'll go

Through the wastelands, through the highways

And on and on we'll go

And on and on we'll goAnd we'll grow in number

And on and on we'll goAnd we'll grow in numberFueled by thunder, see the horizon

And on and on we'll goAnd we'll grow in numberFueled by thunder, see the horizonTurn us to thousands

And on and on we'll goAnd we'll grow in numberFueled by thunder, see the horizonTurn us to thousandsAnd we'll grow in number

And on and on we'll goAnd we'll grow in numberFueled by thunder, see the horizonTurn us to thousandsAnd we'll grow in numberFueled by thunder, see the horizon

And on and on we'll goAnd we'll grow in numberFueled by thunder, see the horizonTurn us to thousandsAnd we'll grow in numberFueled by thunder, see the horizonTurn us to thousands

And on and on we'll goAnd we'll grow in numberFueled by thunder, see the horizonTurn us to thousandsAnd we'll grow in numberFueled by thunder, see the horizonTurn us to thousandsAnd on and on we'll go

And on and on we'll goAnd we'll grow in numberFueled by thunder, see the horizonTurn us to thousandsAnd we'll grow in numberFueled by thunder, see the horizonTurn us to thousandsAnd on and on we'll goThrough the wastelands, through the highways

And on and on we'll goAnd we'll grow in numberFueled by thunder, see the horizonTurn us to thousandsAnd we'll grow in numberFueled by thunder, see the horizonTurn us to thousandsAnd on and on we'll goThrough the wastelands, through the highways'Til my shadow turns to sunrays

And on and on we'll goAnd we'll grow in numberFueled by thunder, see the horizonTurn us to thousandsAnd we'll grow in numberFueled by thunder, see the horizonTurn us to thousandsAnd on and on we'll goThrough the wastelands, through the highways'Til my shadow turns to sunraysAnd on and on we'll go

And on and on we'll goAnd we'll grow in numberFueled by thunder, see the horizonTurn us to thousandsAnd we'll grow in numberFueled by thunder, see the horizonTurn us to thousandsAnd on and on we'll goThrough the wastelands, through the highways'Til my shadow turns to sunraysAnd on and on we'll goThrough the wastelands, through the highways

And on and on we'll goAnd we'll grow in numberFueled by thunder, see the horizonTurn us to thousandsAnd we'll grow in numberFueled by thunder, see the horizonTurn us to thousandsAnd on and on we'll goThrough the wastelands, through the highways'Til my shadow turns to sunraysAnd on and on we'll goThrough the wastelands, through the highwaysAnd on and on we'll go

Answer 2

Answer:D

Explanation:

Mass of water heated,

M=3×1000×1=3000g/min

Rise in temperature , ΔT=77−27=50∘C

Amount of heat spent, Q=mcΔT

or Q=3000×1×50cal

=3000×50×4.2J/min

=6.3×105J/min

Rate of combustion of fuel = 6.3×105J/min4.0×104J/g

=15.75g/min≈16g/min