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

The compressibility factor $(\mathrm{Z})$ is lower for $\mathrm{NH}_3$ and $\mathrm{CO}_2$ gases than that of $\mathrm{N}_2$ gas because

A

van der Waals' constants ' $a$ ' of $\mathrm{CO}_2$ and $\mathrm{NH}_3$ are greater than that of $\mathrm{N}_2$.

B

Van der Waals' constant ' $a$ ' of $\mathrm{CO}_2$ and $\mathrm{NH}_3$ are less than that of $\mathrm{N}_2$.

C

' $a$ ' $\left(\mathrm{NH}_3\right)>$ ' $a$ ' $\left(\mathrm{N}_2\right)$ but ' $a$ ' $\left(\mathrm{CO}_2\right)<$ ' $a$ ' $\left(\mathrm{N}_2\right)$

D

' $a$ ' $\left(\mathrm{NH}_3\right)<$ ' $a$ ' $\left(\mathrm{N}_2\right)$ but ' $a$ ' $\left(\mathrm{CO}_2\right)>$ ' $a$ ' $\left(\mathrm{N}_2\right)$

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

Combustion of 10 mL of a gaseous hydrocarbon gives 40 mL of $\mathrm{CO}_2$ and 50 mL of water vapour under the same conditions. The molecular formula of the hydrocarbon is

A

$\mathrm{C}_4 \mathrm{H}_6$

B

$\mathrm{C}_4 \mathrm{H}_8$

C

$\mathrm{C}_3 \mathrm{H}_4$

D

$\mathrm{C}_4 \mathrm{H}_{10}$

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

The number of moles of ferrous oxalate oxidised by one mole of $\mathrm{KMnO}_4$ in acidic medium is

A

$\frac{5}{2}$

B

$\frac{2}{5}$

C

$\frac{3}{5}$

D

$\frac{5}{3}$

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

An air bag on adiabatic expansion undergoes $5 \%$ increase in its volume. The percentage change in pressure is $\left[\gamma_{\text {air }}=1.4\right]$

A

5

B

6

C

7

D

9

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