List of practice Questions

Among the following, which are examples of first-order reactions?

(A) \(^{226}_{88}\text{Ra} \rightarrow {}^{4}_{2}\text{He} + {}^{222}_{86}\text{Rn}\) 

(B) \(2\text{NH}_3 \xrightarrow[\text{Pt catalyst}]{1130\,\text{K}} \text{N}_2\text{(g)} + 3\text{H}_2\text{(g)}\) 

(C) \(2\text{N}_2\text{O}_5\text{(g)} \rightarrow 2\text{N}_2\text{O}_4\text{(g)} + \text{O}_2\text{(g)}\) 

(D) \(\text{C}_2\text{H}_4\text{(g)} + \text{H}_2\text{(g)} \rightarrow \text{C}_2\text{H}_6\text{(g)}\) 

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Arrange the following rate expressions (of hypothetical reactions) in the increasing arrangement of their order of reaction:
Assume the concentrations of A and B in all the rate expressions is same.
(A) \(\text{Rate} = k [\text{A}]^{1/2} [\text{B}]^{3/2}\)
(B) \(\text{Rate} = k [\text{A}]^{1/2} [\text{B}]^{1/2}\)
(C) \(\text{Rate} = k [\text{A}]^{3/2} [\text{B}]^{-1}\)
(D) \(\text{Rate} = k [\text{A}]^2 [\text{B}]^1\)
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The electronic configuration of \(\text{Co}^{3+}\) metal ion is........
When Manganeses (II) reacts with peroxodisulphate, the respective products obtained are:
The most stable oxidation state of titanium is
Chloroform oxidizes in the presence of light to
The constant 'k' in a rate law expression of a reaction is
Match List-I with List -II
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Species that are formed in one step of reaction mechanism and used up in another step are called
Match List-I with List-II

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Arrange the following compounds in increasing order towards nucleophilic substitution reaction.
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2-Bromopentane reacts with alcoholic KOH to form major product as:
Which of the following salts would have the same value of the van't Hoff factor as that of \(\text{Al}(\text{NO}_3)_3\) in aqueous solution?
Assume complete dissociation of electrolytes.
(A) \(\text{K}_2\text{SO}_4\)
(B) \(\text{KCl}\)
(C) \(\text{Al}_2(\text{SO}_4)_3\)
(D) \(\text{K}_3[\text{Fe}(\text{CN})_6]\)
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Which of the following statements are true for the elevation of boiling point?
(A) The boiling point of a solution is always higher than the boiling point of the pure solvent in which the solution is prepared.
(B) The boiling point of a solution is always lower than the boiling point of the pure solvent in which the solution is prepared.
(C) The elevation of boiling point is directly proportional to the molal concentration of the solute in solution.
(D) Unit of \(K_b = \text{K kg mol}^{-1}\)
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Match List-I with List-II

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Water movement from soil into plant roots and subsequently into upper portion of the plant is partly due to phenomenon of
Which of the following compound is used as paint remover?
If \( h(x) = \sqrt{4f(x) + 3g(x)} \), \( f(1)=4 \), \( g(1)=3 \), \( f'(1)=3 \), \( g'(1)=4 \), then \( h'(1) \) is equal to:}
A disc of mass \(M\) and radius \(R\) has a concentric hole of radius \(R/2\). Its moment of inertia about an axis passing through its center and perpendicular to its plane is:
Direction: In each of the following sentences, the incorrect part of the sentence is underlined. Choose an alternative from the four given options so that the sentence is rendered correct.
Despite of the heavy rain, the event was successfully conducted.
Rearrange the following parts to form a meaningful sentence.
(P) because she had prepared well
(Q) the interview confidently
(R) she answered
(S) all the questions in
If an air bubble of diameter 2 mm rises steadily through a liquid of density 2000 kg/m³ at a rate of 0.5 cm/s, then the coefficient of viscosity of the liquid is _______ Poise.
Which kidney stone is radiolucent on a plain KUB X-ray?

Mention how Ausable was always one step ahead of everyone.
 (The Midnight Visitor)

The Wheatstone bridge is in balanced condition in the given figure (assume branches are 2$\Omega$, 6$\Omega$, X, and 12$\Omega$ in order), then X = ______.