JEE Physics

StemEZ

Chapter 30

Experiment - Specific Heat Capacity Of A Give (Ii) Liquid By Method Of Mixtures. (I) Solid And - all with Video Answers

Educators

Chapter Questions

Problem 2834

Amount of heat required to raise the temperature of a body through $1 \mathrm{k}$ is called its
(A) water equivalent
(B) Thermal capacity
(C) entropy
(D) specific heat

Narayan Hari

Narayan Hari

Numerade Educator

Problem 2835

The graph $\mathrm{AB}$ shown in figure is a plot of temperature of body in degree Celsius and degree Fahrenheit, Then......
(A) Slope line $\mathrm{AB}$ is $(9 / 5)$
(B) Slope of line is $(5 / 9)$
(C) Slope of line $\mathrm{AB}$ is $(1 / 9)$
(D) Slope of line $\mathrm{AB}$ is $(3 / 9)$

Narayan Hari

Numerade Educator

Problem 2836

The graph shows the variation of temperature (T) of one kilogram of a material with the heat (H) supplied to it, At $\mathrm{O}$, the substance is in the solid state. From the graph, we can conclude that...
(A) $\mathrm{T}_{2}$ is the melting point of the solid.
(B) $\mathrm{BC}$ represents the change of state from solid to liquid.
(C) $\left(\mathrm{H}_{2}-\mathrm{H}_{1}\right)$ represents the latent heat of fusion of the substance.
(D) $\left(\mathrm{H}_{3}-\mathrm{H}_{1}\right)$ represents the latent heat of vaporization of the liquid.

Narayan Hari

Numerade Educator

Problem 2837

A block of ice at $-10^{\circ} \mathrm{C}$ is slowly heated and converted to steam at $100^{\circ} \mathrm{C}$. Which of the following curves represents the phenomenon qualitatively.

Narayan Hari

Numerade Educator

Problem 2838

Which the substances $\mathrm{A}, \mathrm{B}$ or $\mathrm{C}$ has the highest specific heat in The temperature $\mathrm{V}$ s time graph is shown.
(A) $\mathrm{A}$
(B) B
(C) C
(D) All have equal specific heat.

Narayan Hari

Numerade Educator

Problem 2839

A centigrade and a Fahrenheit thermometer one dipped in boiling water. The water temperature is lowered until the Fahrenheit thermometer registers $140^{\circ}$. What is the fall in temperatures as registered by the centigrade thermometer?
(A) $30^{\circ}$
(B) $40^{\circ}$
(C) $60^{\circ}$
(D) $80^{\circ}$

Narayan Hari

Numerade Educator

Problem 2840

$100 \mathrm{~g}$ ice at $0^{\circ} \mathrm{C}$ placed in $100 \mathrm{~g}$ water at $100^{\circ} \mathrm{C}$. The final temperature of the mixture will be........ (Latent heat of ice is $80 \mathrm{Cal} / \mathrm{g}$, and specific heat of water is $1 \mathrm{Cal} / \mathrm{g} \mathrm{C}^{\circ}$ )
(A) $10^{\circ} \mathrm{C}$
(B) $20^{\circ} \mathrm{C}$
(C) $30^{\circ} \mathrm{C}$
(D) $50^{\circ} \mathrm{C}$

Narayan Hari

Numerade Educator

Problem 2841

On a hot day at Ahmadabad a trucker loaded $37,000 \mathrm{~L}$ of diesel fuel. He delivered the diesel at Srinagar (Kashmir) Where the temperature was lower then that of Ahmadabad by $23 \mathrm{k}$. How many liters did he deliver? For diesel $\gamma=3$ $\alpha=950 \times 10^{-4} \mathrm{C}^{\circ-1}$
(Neglect the thermal expansion / Contrition of steel tank of the trunk)
(A) $808 \mathrm{~L}$
(B) $36,190 \mathrm{~L}$
(C) $37808 \mathrm{~L}$
(D) $37,000 \mathrm{~L}$

Narayan Hari

Numerade Educator

Problem 2842

For which value of the temperature will the values of Fahrenheit scale and Kelvin scale be equal?
(A) $459.67$
(B) $574.24$
(C) $-32$
(D) 100

Narayan Hari

Numerade Educator

Problem 2843

The temperature of equal masses of three different liquids $\mathrm{X}$, $\mathrm{Y}, \mathrm{Z}$ are $12^{\circ} \mathrm{C}, 19^{\circ} \mathrm{C}$ and $28^{\circ} \mathrm{C}$ respectively. The temperature
when $\mathrm{X}$ and $\mathrm{Y}$ are mixed is $16^{\circ} \mathrm{C}$ and when $\mathrm{Y}$ and $\mathrm{Z}$ are mixed is $23^{\circ} \mathrm{C}$ what is the temperature when $\mathrm{X}$ and $\mathrm{Z}$ are mixed ?
(A) $21.6^{\circ} \mathrm{C}$
(B) $18.5^{\circ} \mathrm{C}$
(C) $23.25^{\circ} \mathrm{C}$
(D) $20.3^{\circ} \mathrm{C}$

Narayan Hari

Numerade Educator

Problem 2844

Two liquids of equal volume are thoroughly mixed. If their specific heat are $c_{1}, c_{2}$, temperatures $\theta_{1}, \theta_{2}$ and densities $\mathrm{d}_{1}, \mathrm{~d}_{2}$ respectively. What is the final temperature of the mixture ?
(A) $\left\{\left(\mathrm{d}_{1} \mathrm{c}_{1} \theta_{1}+\mathrm{d}_{2} \mathrm{c}_{2} \theta_{2}\right) /\left(\mathrm{d}_{1} \theta_{1}+\mathrm{d}_{2} \theta_{2}\right)\right\}$
(B) $\left\{\left(\mathrm{c}_{1} \theta_{1}+\mathrm{c}_{2} \theta_{2}\right) /\left(\mathrm{d}_{1} \mathrm{c}_{1}+\mathrm{d}_{2} \mathrm{c}_{2}\right)\right\}$
(C) $\left\{\left(\mathrm{d}_{1} \theta_{1}+\mathrm{d}_{2} \theta_{2}\right) /\left(\mathrm{c}_{1} \theta_{1}+\mathrm{c}_{2} \theta_{2}\right)\right\}$
(D) $\left\{\left(\mathrm{d}_{1} \mathrm{c}_{1} \theta_{1}+\mathrm{d}_{2} \mathrm{c}_{2} \theta_{2}\right) /\left(\mathrm{d}_{1} \mathrm{c}_{1}+\mathrm{d}_{2} \mathrm{c}_{2}\right)\right\}$

Narayan Hari

Numerade Educator