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. $(k_p/p)$

A buffer solution is prepared in which the concentration of NH₃ is 0.30 M and the concentration of NH₄⁺ IS 0.20 M. If the equilibrium constant, K_b for NH₃ equals 1.8 ×10^-5. What is the pH of this solution?

1. 9.43

2. 11.72

3. 8.73

4. 9.08

If a gas expands at a constant temperature, it indicates that: 

1. kinetic energy of molecules decreases

2. pressure of the gas increases

3. Kinetic energy of molecules remains the same

4. number of the molecules of gas increase

If n = 6, the correct sequence for the filling of electrons will be:

1.  ns → (n-1)d → (n-2)f → np

2.  ns → (n-2)f → np → (n-1)d

3.  ns → np → (n-1)d → (n-2)f

4.  ns → (n-2)f → (n-1)d → np