A liquid is stirred with a paddle to increase its temperature in a closed insulated container. Which of the following is true in this process?

Question

A liquid is stirred with a paddle to increase its temperature in a closed insulated container. Which of the following is true in this process? (A) Δ E=W=Q=0 (B) Δ E=W≠ 0,Q=0 (C) Δ E≠ 0,Q=W=0 (D) Δ E=Q≠ 0,W=0

Tardigrade Admin · Accepted Answer

As the system is closed and insulated, no heat enter or leave the system, i.e. q=0 ; ∴ Δ E=Q+W=W .

Q. A liquid is stirred with a paddle to increase its temperature in a closed insulated container. Which of the following is true in this process?

$Δ E = W = Q = 0$

$Δ E = W \neq = 0, Q = 0$

$Δ E \neq = 0, Q = W = 0$

$Δ E = Q \neq = 0, W = 0$

As the system is closed and insulated, no heat enter or leave the system, i.e. $q = 0$ ; $∴ Δ E = Q + W = W$ .

Q. A liquid is stirred with a paddle to increase its temperature in a closed insulated container. Which of the following is true in this process?

ΔE=W=Q=0

ΔE=W=0,Q=0

ΔE=0,Q=W=0

ΔE=Q=0,W=0

As the system is closed and insulated, no heat enter or leave the system, i.e. q=0 ; ∴ΔE=Q+W=W .

$Δ E = W = Q = 0$

$Δ E = W \neq = 0, Q = 0$

$Δ E \neq = 0, Q = W = 0$

$Δ E = Q \neq = 0, W = 0$

As the system is closed and insulated, no heat enter or leave the system, i.e. $q = 0$ ; $∴ Δ E = Q + W = W$ .