Introduction

Q. The slope of Arrhenius plot $\left(\ln kv/s\frac{1}{T}\right)$ of first order reaction is $–5\times {10}^{3}K$. The value of $E_a$ of the reaction is. Choose the correct option for your answer. [Given $R=8.314J{K}^{–1}mo{l}^{–1}]$

1. $–83kJmo{l}^{–1}$
2. $41.5kJmo{l}^{–1}$
3. $83.0kJmo{l}^{–1}$
4. $166kJmo{l}^{–1}$

Q.

Differentiate between physical and chemical adsorption?

Q.

Unit of rate constant for a second order reaction is:

1. mol ^-1 L s^-1

2. mol L^-1

3. s^-1

4. mol L^-1s^-1

Q.

What is the electronic configuration of Rubidium?

Q.

What are eka- boron, eka-aluminium and eka- silicon?

Q.

Write the balanced chemical equations for the below reaction and identify the type of reaction in the case: Ethanol is burnt in air to form carbon dioxide, water and releases heat.

Q. the chemical reaction 2O3 →3O2 proceeds as follows O3→ O2 +O (FAST) O+O3→2O2 (SLOW) the rate law expression should be

Q.

The rate of reaction doubles when its temperature changes from 300K to 310 K .activation energy of such a reaction will be (R=8.314 kj/ mol and WG2= 0.031 )

Q. 18. What concentration of nitrogen should be present in a glass of water at room temperature? Assume a temperature of 25^° C, a total pressure of 1 atm anda temperature of mole fraction of nitrogen in atmosphere an {(K_H for nitrogen =8.42×10^{-7M/mm Hg.

Q. The number of electrons in the M-shell of the element with atomic number 24 is :-
A. 24. B. 12. C. 8. D.13

Q.

What is the purest form of carbon?

a) fullerene

b) carbon black

c) diamond

d) coke

e) any other

Q.

The set representing the correct order of ionic radius is-

1. Mg²⁺ > Be²⁺ > Li⁺ > Na⁺

2. Na⁺ > Li⁺ > Mg²⁺ > Be²⁺

3. Li⁺ > Be²⁺ > Na⁺ > Mg²⁺

4. Li⁺ > Na⁺ > Mg2⁺ > Be²⁺

Q.

How many electrons are involved in the oxidation of Potassium Permangnate $\left({\mathrm{KMnO}}_4\right)$ in the basic medium?

Q.

Name the characteristics of chemical equilibrium?

Q.

The equilibrium constant for the reaction ${\mathrm{CaCO}}_3\left(\mathrm{s}\right)\rightleftharpoons \mathrm{CaO}\left(\mathrm{s}\right)+{\mathrm{CO}}_2\left(\mathrm{g}\right)$ is______

Q.

What are the limitations of Bronsted lowry theory?

Q.

Explain Group $\mathrm{VI}$ Elements?

Q.

Which of the following substance will not give carbon dioxide on treatment with dilute acid?

1. Marble

2. Limestone

3. Baking soda

4. Lime

Q. The crystal field stabilisation energy for CoCl6 is 18000 the cfse for Cocl4

Q.

What is Uraniums electron configuration?

Q. In a certain reaction shown below 4A+2B→3C If rate of formation of C is 9.6×10^{-2} mol/Ls, What will be the rate of reaction?

Q. Which of the following compound gives negative Fehling's test?

1. Benzaldehyde
2. Aliphatic ketone
3. Both (a) and (b)
4. Aliphatic aldehyde

Q.

State the valency of nitrate.

Q.

Write the structural formula for methanoic acid.

Q.

Bond order?

Q.

Which of the following is not a state function?

1. Work

2. Entropy

3. Enthalpy

4. Internal energy

Q.

what is quantum energy?

Q. What is difference between Daniel cell and galvanic cell

Q.

The formula of malachite ore is _______.

Q.

At $143\mathrm{K}$, the reaction of ${\mathrm{XeF}}_4$ with ${\mathrm{O}}_2{\mathrm{F}}_2$ produces a Xenon compound $\mathrm{Y}$. The total number of lone pairs of electrons present on the whole molecule of $\mathrm{Y}$ is -