1
TS EAMCET 2022 (Online) 19th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

A metal cube of side 10 cm rests on a film of a liquid of thickness 0.2 mm . If upon applying a horizontal force $\mathbf{F}$ of magnitude 0.1 N . The cube slides with a constant speed of $0.08 \mathrm{~m} / \mathrm{s}$, then the coefficient of viscosity is

A

$2.5 \times 10^{-2} \frac{\mathrm{~N}-\mathrm{s}}{\mathrm{m}^2}$

B

$025 \times 10^{-2} \frac{\mathrm{~N}-\mathrm{s}}{\mathrm{m}^2}$

C

$5 \times 10^{-2} \frac{\mathrm{~N}-\mathrm{s}}{\mathrm{m}^2}$

D

$0.5 \times 10^{-2} \frac{\mathrm{~N}-\mathrm{s}}{\mathrm{m}^2}$

2
TS EAMCET 2022 (Online) 19th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

176 g of $\mathrm{CO}_2$ can change its temperature from $0^{\circ} \mathrm{C}$ to $30^{\circ} \mathrm{C}$ by absorbing 3600 J of thermal energy. Molar specific heat of $\mathrm{CO}_2\left(\right.$ in $\left.\mathrm{J} \mathrm{mol}^{-1} \mathrm{~K}^{-1}\right)$ is

A

30

B

40

C

50

D

60

3
TS EAMCET 2022 (Online) 19th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

A solution consists of ether and 5.0 g of water at $0^{\circ} \mathrm{C}$. If the ether evaporates completely to freeze the water, then the mass of the ether in the solution is

A

5 g

B

4 g

C

4.5 g

D

6 g

4
TS EAMCET 2022 (Online) 19th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

Assertion (A) Heat and work are modes of energy transfer to a system resulting in change in its internal energy.

Reason (R) Heat and work in thermodynamics are state variables.

The correct option among the following is

A

(A) is true, (R) is true and (R) is the correct explanation of (A)

B

(A) is true, (R) is true but (R) is not the correct explanation for (A)

C

(A) is true but (R) is false

D

(A) is false but (R) is true

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