# For the reaction ${\mathrm{N}}_{2}\left(\mathrm{g}\right)$ $+$ ${\mathrm{O}}_{2}\left(\mathrm{g}\right)⇋2\mathrm{NO}\left(\mathrm{g}\right)$ the equilibrium constant is K1. The equilibrium constant is K2 for the reaction  $2\mathrm{NO}\left(\mathrm{g}\right)$ $+$ ${\mathrm{O}}_{2}\left(\mathrm{g}\right)$ $⇋2{\mathrm{NO}}_{2}\left(\mathrm{g}\right)$  The value of K for the reaction given below will be: ${\mathrm{NO}}_{2}\left(\mathrm{g}\right)⇋\frac{1}{2}{\mathrm{N}}_{2}\left(\mathrm{g}\right)$ $+{\mathrm{O}}_{2}\left(\mathrm{g}\right)$  1.  $\frac{1}{4}$ $\left(4\right)$ ${\mathrm{K}}_{1}$ ${\mathrm{K}}_{2}$ 2.  ${\left[\frac{1}{{\mathrm{K}}_{1}{\mathrm{K}}_{2}}\right]}^{1/2}$ 3.  $\frac{1}{\left({\mathrm{K}}_{1}{\mathrm{K}}_{2}\right)}$ 4.  $\frac{1}{\left(2{\mathrm{K}}_{1}{\mathrm{K}}_{2}\right)}$

Subtopic:  Kp, Kc & Factors Affecting them |
88%
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AIPMT - 2011
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The equilibrium reaction that doesn't have equal values for Kc and Kis:

1. $$2NO(g) \rightleftharpoons N_2(g) + O_2(g)$$
2. $$SO_2(g) + NO_2(g) \rightleftharpoons SO_3(g) + NO(g)$$
3. $$H_2(g) + I_2(g) \rightleftharpoons 2HI (g)$$
4. $$2C(s) + O_2(g) \rightleftharpoons 2CO_2(g)$$

Subtopic:  Kp, Kc & Factors Affecting them |
91%
From NCERT
AIPMT - 2010
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Given a hypothetical reaction :
${\mathrm{AB}}_{2}\left(\mathrm{g}\right)+\frac{1}{2}{\mathrm{B}}_{2}\left(\mathrm{g}\right)⇌{\mathrm{AB}}_{3}\left(\mathrm{g}\right);$ $∆\mathrm{H}=-\mathrm{x}$ $\mathrm{kJ}$
More  could be produced at equilibrium by :

 1 Using a catalyst 2 Removing some of B2 gas 3 Increasing the temperature 4 Increasing the pressure
Subtopic:  Le Chatelier's principle |
75%
From NCERT
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At room temperature, MY and NY3, two nearly insoluble salts, have the same Ksp values of 6.2 × 10-13. The true statement regarding MY and NY3 is:

 1 The molar solubility of MY in water is less than that of NY3. 2 The salts MY and NY3 are more soluble in 0.5 M KY than in pure water. 3 The addition of the salt of KY to a solution of MY and NY3 will have no effect on their solubilities. 4 The molar solubilities of MY and NY3 in water are identical.

Subtopic:  Solubility Product |
68%
From NCERT
NEET - 2016
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The solubility of BaSO4 in water is $2.42$ $×$ ${10}^{-3}$ g/ litre at 298 K. The value of the solubility product will be: (Molar mass of BaSO4 = 233 gmol–1)

 1 1.08 × 10–10 mol2 L–2 2 1.08 × 10–12 mol2 L–2 3 1.08 × 10–14 mol2 L–2 4 1.08 × 10–8 mol2 L–2
Subtopic:  Solubility Product |
61%
From NCERT
NEET - 2018
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For the reaction 2NOCl(g)⇔2NO(g)+Cl2(g), KC at 427$°$C is $$3\times 10^{-6} \ mol\ L^{-1}$$. The value of Kp will be :

1. $1.72×{10}^{-4}$

2. $7.50×{10}^{5}$

3. $2.50×{10}^{-5}$

4. $2.50×{10}^{-4}$

Subtopic:  Kp, Kc & Factors Affecting them |
83%
From NCERT
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The dissociation of NH4OH can be suppressed by the addition of

 1 NH4Cl 2 NH4NO3 3 NaOH 4 All of the above
Subtopic:  Common Ion Effect |
70%
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For the following reaction,
H2(g)+I2(g)2HI(g) $at$ $250°C,$

The effect on the state of equilibrium on doubling the volume of the system will be:

 1 Shift to the reactant side 2 Shift to the product side 3 No effect on the state of equilibrium 4 Liquefaction of HI

Subtopic:  Le Chatelier's principle |
83%
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In the reaction A(g) + 2B(g) ⇌ 2C(g) + D(g), the initial concentration of B is twice that of A and, at equilibrium, the concentrations of A and D are equal. The value of the equilibrium constant will be:

 1 4 2 16 3 2 4 1
Subtopic:  Introduction To Equilibrium |
67%
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The number of ${\mathrm{H}}^{\oplus }$ ions present in 1 ml of a solution whose pH= 4 , is given as:

(${N}_{A}=$ $Avogadro\text{'}s$ $number$)

1. ${10}^{-7}{N}_{A}$

2. ${10}^{-8}{N}_{A}$

3. ${10}^{-16}{N}_{A}$

4. ${10}^{-14}{N}_{A}$

Subtopic:  Acids & Bases - Definitions & Classification | pH calculation |
76%
From NCERT
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