Q. No.
KMnO4 can be prepared from K2MnO4 as per reaction,
The reaction can go to completion by removing OH- ions by adding
1. HCl
2. KOH
3. CO2
4. SO2
1. 0.25 Mol/L
2. \({1 \over 22.4 } Mol /L\)
3. 0.175 Mol/L
4. \({ 1 \over 5.6}~ Mol / L\)
10 gm CaCO3 is taken in a one litre container. The active mass of CaCO3 is:
1. 0.1
2. 1
3. zero
4. 10
| Assertion (A): | For the reaction: H2(g) + I2(g) \(\rightleftharpoons\) 2HI(g), if the volume of the vessel is reduced to half of its original volume, the equilibrium concentration of all gases will be doubled. |
| Reason (R): | According to Le-Chatelier's principle, reaction shifts in a direction that tends to minimize the effect of stress. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
What can be the active mass of CaCO3 if 10 grams of CaCO3 are taken in a one-liter container?
[Given: Molecular weight of CaCO3 = 100]
1. 0.1
2. 1
3. 0.01
4. 10
| Assertion (A): | For every chemical reaction at equilibrium, standard Gibbs energy of the reaction is zero. |
| Reason (R): | At constant temperature and pressure, chemical reactions are spontaneous in the direction of decreasing Gibbs energy. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
The equilibrium constant of the reaction A2(g) + B2(g) 2AB (g) at 100ºC is 50. If a one litre flask containing one mole of A2 is connected to a two litre flask containing two moles of B2, how many moles of AB will be formed at 373 K ?
1. 2.8
2. 1.9
3. 2.1
4. 3.6
The increasing order of basic strength of Cl-, , CH3COO-, OH-, F- is:
1. Cl-<F-<CH3COO-<<OH-
2. Cl-<F-< <CH3COO-<OH-
3. CH3COO-<Cl-<F-<<OH-
4. none of the above
Which of the following compounds are in the correct sequence in terms of relative basic strength?
1. \(C_{2} H_{5} O^{-} > CH \equiv C^{-} > \left(OH\right)^{-}\)
2. \(CH \equiv C^{-} >(OH)^{-} > C_{2} H_{5} O^{-}\)
3. \(CH \equiv C^{-} > C_{2} H_{5} O^{-} > \left(OH\right)^{-}\)
4. \(C_{2} H_{5} O^{-} > \left(OH\right)^{-} > CH \equiv C^{-}\)
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. , Stannous chloride
3. Only
4. , Stannous chloride, Stannic chloride
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