The decomposition of NH3 on a platinum surface is a zero-order reaction. The rates of production of N2 and H2 will be respectively:
(given ; k = 2.5 × 10–4 mol–1 L s–1 )
1. | 2.5 × 10−4 mol L−1 s−1 and 5.5 × 10−4 mol L−1 s−1
|
2. | 2.5 × 10−4 mol L−1 s−1 and 7.5 × 10−4 mol L−1 s−1
|
3. | 1.5 × 10−4 mol L−1 s−1 and 4.5 × 10−4 mol L−1 s−1
|
4. | 0.5 × 10−4 mol L−1 s−1 and 3.5 × 10−4 mol L−1 s−1 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe rate equation of a reaction is expressed as, Rate = \(k(P_{CH_{3}OCH_{3}})^{\frac{3}{2}}\)
(Unit of rate = bar min–1)
The units of the rate constant will be:
1. bar1/2 min
2. bar2 min–1
3. bar–1 min–2
4. bar–1/2 min–1
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe factor(s) that affect the rate of a chemical reaction is/are:
1. | Concentration/Pressure of reactants. |
2. | Temperature. |
3. | Presence of a catalyst. |
4. | All of the above. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biologyt/s | 0 | 30 | 60 | 90 |
[Ester]/mol L–1 | 0.55 | 0.31 | 0.17 | 0.085 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA reaction is first-order with respect to A and second-order with respect to B. The concentration of B is increased three times. The new rate of the reaction would:
1. | Decrease 9 times | 2. | Increase 9 times |
3. | Increase 6 times | 4. | Decrease 6 times |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn a reaction between A and B, the initial rate of reaction (r0) was measured for different initial concentrations of A and B as given below:
A / mol L–1 | 0.20 | 0.20 | 0.40 |
B / mol L–1 | 0.30 | 0.10 | 0.05 |
ro / mol L–1 s–1 | 5.07 × 10–5 | 5.07 × 10–5 | 1.43 × 10–4 |
The order of the reaction with respect to A and B would be:
1. | The order with respect to A is 0.5 and with respect to B is zero |
2. | The order with respect to A is 1 and with respect to B is 0.5 |
3. | The order with respect to A is 2 and with respect to B is 1 |
4. | The order with respect to A is 1.5 and with respect to B is zero |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFor a reaction, 2A + B → C + D, the following observations were recorded:
Experiment | [A]/mol L–1 | [B]/mol L–1 | Initial rate of formation of D/mol L–1 min–1 |
I | 0.1 | 0.1 | 6.0 × 10–3 |
II | 0.3 | 0.2 | 7.2 × 10–2 |
III | 0.3 | 0.4 | 2.88 × 10–1 |
IV | 0.4 | 0.1 | 2.40 × 10–2 |
The rate law applicable to the above mentioned reaction would be:
1. Rate = k[A]2[B]3
2. Rate = k[A][B]2
3. Rate = k[A]2[B]
4. Rate = k[A][B]
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFor the reaction , rate = with k = and . The initial rate of the reaction will be :
1. 0.04 mol
2. 8
3. 8
4. 8 mol
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGiven that . The dimension of the rate constant in the given rate law is -
1. | 2. | ||
3. | 4. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyConsider the following rate expression.
The order of reaction and dimension of the rate constant are, respectively-
1. ; k =
2. 3; k =
3. ; k =
4. ; k =
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology