A solution with negative deviation among the following is:

1. ethanol-acetone

2. chlorobenzene-bromobenzene

3. chloroform-acetone

4. benzene-toluene

Which of the following compounds is soluble in benzene but almost insoluble in water?

1. $C_2{H}_{5}0H$

2. $C{H}_{3}C{0}_{2}H$

3. $C{H}_{3}CHO$

4. $C_6{H}_{5}N{0}_2$

The correct order of magnitude of bond angles among the compounds CH₄, NH₃' and H₂O is:

1. $C{H}_4>H_{2}O<N{H}_3$

2. $H_{2}O<N{H}_3<C{H}_4$

3. $N{H}_3<C{H}_4<H_{2}O$

4. $N{H}_3<H_{2}O<C{H}_4$

Which one of the following reactions does not form a gaseous product?

1. $Pb{O}_2+H_2{O}_2\to$

2. $Acidified<mspace\; width="1em"></mspace>KMn{O}_4+H_{2}O\to$

3. $PbS+H_2{O}_2\to$

4. $C{l}_2+H_2{O}_2\to$

Observe the following reaction-
 
The rate of formation of C is . What is the value of ?

1. $2.2\times {10}^{-3}$

2. $1.1\times {10}^{-3}$

3. $4.4\times {10}^{-3}$

4. $5.5\times {10}^{-3}$

Which one of the following 1s employed as antihistamine?

1. Diphenyl hydramine

2. Norethindrone

3. Omeprazole

4. Chloramphenicol

If x is the amount of adsorbate and m is the amount of adsorbent, which of the following relations is not related to the adsorption process?

1. $\frac{x}{m}=f\left(T\right)<mspace\; width="1em"></mspace>at<mspace\; width="1em"></mspace>cons\tan t<mspace\; width="1em"></mspace>p$

2. $p=f\left(T\right)<mspace\; width="1em"></mspace>at<mspace\; width="1em"></mspace>cons\tan t\left(\frac{x}{m}\right)$

3. $\frac{x}{m}p\times T$

4. $\frac{x}{m}=f\left(p\right)<mspace\; width="1em"></mspace>at<mspace\; width="1em"></mspace>cons\tan t<mspace\; width="1em"></mspace>T$

Standard electrode potential of three metals X, Y and Z are -1.2 V, +0.5 V and -3.0 V respectively. The reducing power of these metals will be:

1. Y > X > Z

2. Z > X > Y

3. X > Y > Z

4. Y > Z > X

Which of the following compounds has the lowest melting point?

1. $CaB{r}_2$

2. $Ca{l}_2$

3. $Ca{F}_2$

4. $CaC{l}_2$

The dissociation equilibrium of a gas AB₂ can be represented as-
 
The degree of dissociation is 'x' and is small compared to 1. The expression relating the degree of dissociation (x) with equilibrium constant K_P and total pressure p is:

1. $\left(2k_p/p\right)$

2. ${\left(2k_p/p\right)}^{1/3}$

3. ${\left(2k_p/p\right)}^{1/2}$

4. $(k_p/p)$