Chemistry Major Test 1 (13-02-2017) - Class 11 MCQ

The enthalpy change for a reaction does not depend upon:

The enthalpies of combustion of carbon and carbon monoxide are -393.5 and -283kjmol^-1

   respectively. The enthalpy of formation of carbon monoxide per mole is:  

Standard entropy of X₂,Y₂ and XY₃ are 60, 40 and 50 JK^-1 Mol ^-1 respectively. For a given reaction, to be in equilibrium, the temperature will be :

An ideal gas expands in volume from 1 x 10^-3 m³ to  1 x 10^-2m³ at 300 K against a constant pressure of 1 x 10^-5 Nm^-2. The work done is:

What is the entropy change (in JK^-1 mol ^-1 ) when 1 mole of ice is converted into water at 0⁰C  (The enthalpy change for the conversion of ice to liquid water is 6.0 KJ mol ^-1 at 0⁰C)  

The heat of formation for a compound in following reaction

. Equal volumes of two monatomic gases, A and B at sae temperature and pressure are mixed. The rato of specific heats (C_p/C_v) of the mixture will be:

Consider the following processes :

. Considering entropy (S)  as a thermodynamic parameter, the criterion for the spontaneity of any process is :

The enthalpy of fusion of water is 1.435 Kcal/mol. The molar entropy change for the melting of ice at 0^oC is:

Given that :

The enthalpy of formation of carbon monoxide will be:

Atmospheric pressures recorded in different cities are as follows:

Consider the above data and mark the place at which liquid will boil first.

Bond dissociation enthalpy of H₂, Cl₂ and HCl are 434,242 and 431 KJ mol ^-1 respectively. Enthalpy of formation of HCl is:

Absolute zero is defined as the temperature :

Which is not true in case of an ideal gas?

4.4 g of a gas at STP  occupies a volume of 2.24 L. the gas can be  :

The ratio between most probable velocity, mean velocity and r.m.s velocity is :

In vander walls equation of state of the gas law, the constant ‘b’ is a measure of :

From heated mixture of nitrogen, oxygen and carbon, two compounds (out of the many obtained) are isolated . the rates of diffusion of the two isolated compounds are almost identical. The two compounds are .

The total pressure of a mixture of two gases is :

Dalton’s law of partial pressure will not apply to which of following mixture of gases

Rate of diffusion of a gas is :

The values of van der Waals constant ‘a’ for the gases O₂, N₂, NH₃ and CH₄ are  1.360, 1.390, 4.170 and 2.253 L² atm mol^-2 respectively. The gas which can most easily be liquefied is:

A gas diffuse 1/5 times as fast as hydrogen Its molecular weight is

The compressibility factor for an ideal gas is:

At which one of the following temperature pressure conditions the deviation of a gas from ideal behaviour is expected to be minimum:

Which of the following volume (v) – temperature (T) plots represents the behavior of one mole of an ideal gas at one atmosphere ?