NAT I Medical Chemistry With Answers

NAT I Medical Chemistry

Sr. # Questions Answers Choice
1 In the equilibrium
N2 + 3H2 - 2NH3 + 22 kcal the formation of ammonia is favoured by
 Increasing the pressure Increasing the temperature Decreasing the pressure Adding ammonia
2 Which of the following value of ΔHf° represent that the product is least stable? -94.0 kcal mol<sup>-1</sup> -231.6&nbsp;<span style="font-size: 14.44444465637207px;">kcal mol</span><sup>-1</sup> +21.4&nbsp;<span style="font-size: 14.44444465637207px;">kcal mol</span><sup>-1</sup> +64.8&nbsp;<span style="font-size: 14.44444465637207px;">kcal mol</span><sup>-1</sup>
3 All the naturally occurring processes proceed spontaneously in a direction which lead to Decrease of entropy Increase of enthalpy Increase of free energy Decrease of free energy
4 ΔHNeutralisation is always Positive Negative Zero Positive or negative
5 The heats evolved in combustion of rhombic and monoclinic sulphur are - 70960 and -71030 cal mol-1 respectively what will be heat of conversion of rhombic sulphur ti monoclinic? 70960 calories 71030 calories -70 calories +70 calories
6 Hess's law deals with Changes in heat or reaction Rate of reaction Equilibrium constant Influence of pressure on volume of a gas
7 An exothermic reaction is one in which the reacting substances Have more energy than the products Have less energy than the products Have the same energy as the products Are at a higher temperature than the products
8 An endothermic reaction is one in which Heat is converted into electricity Heat is obsorbed Heat is evolved Heat is converted into mechanical work
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