Incorrect statement about pH and H⁺ is: 

1.	pH of neutral water is not zero.
2.	Adding 1M solution of CH3COOH and 1M solution of NaOH, the pH will be 7.
3.	H+ of dilute and hot H2SO4 is more than concentrate and cold H2SO4
4.	Mixing solution of CH3COOH and HCl, pH will be less than 7

Given the following two reactions:
     A + B ⇌ C + D, with rate constant K₁
     E + F ⇌ G + H, with rate constant K₂

If C + D + E + F produces a product, what is the rate constant for this reaction?

Which of the following fertilizers is responsible for making the soil acidic?

1. ${\left(N{H}_4\right)}_{2}S{O}_4$

2. Super phosphate of lime.

3. $C{H}_{3}COONa$

4. $Ca{\left(N{O}_3\right)}_2$

Among the following examples, the species that behave(s) as a Lewis acid is/are: 
\(\mathrm{BF}_3, \mathrm{SnCl}_2, \mathrm{SnCl}_4\)

1. Stannous chloride, Stannic chloride
2. $B{F}_3$, Stannous chloride
3. Only $B{F}_3$
4. $B{F}_3$, Stannous chloride, Stannic chloride

4 gm of NaOH is dissolved in 1000 ml of water. The ${\mathrm{H}}^{+}$ ion concentration will be:

The solubility product of a sparingly soluble salt AX₂ is 3.2 ×10^–11. Its solubility (in moles/litre) is:

A compound BA₂ has \(K_{sp} = 4\times 10^{-12}\)$.$ Solubility of this compound will be:

Find the factor on which the equilibrium pressure of O₂ depends for the reaction:

2BaO₂(s) ⇌ 2BaO(s) + O₂(g)  ΔH > 0

The compound with the highest pH among the following is:

1. CH₃COOK

2. Na₂CO₃

3. NH₄Cl

4. NaNO₃

If a solution of 0.1 N NH₄OH and 0.1 N NH₄Cl has pH 9.25, then pK_b of NH₄OH is:

1. 9.25

2. 4.75

3. 3.75

4. 8.25