FSC Chemistry MCQs Chapter 7 Class 11





NUST entry test 2023 NET contains most of the Chemistry MCQs. FSC Part 1 Chemistry book MCQs. HSSC Chemistry questions MCQs. Solved Chapterwise Chemistry MCQs for first-year 11 class MCQs. Second-year and first-year Chemistry textbooks chapter-wise MCQs with the answer are provided here. PakLearningSpot PLS MCQs Bank website for FREE Entry test preparations

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Chemistry Ch 7 Class 11 Thermochemistry

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If a graph is plotted between pressure on x- axis and volume on y- axis for Boyle’s law verification, the curve obtained is called

PMC Sample 2
Chemistry
Thermochemistry
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The enthalpy change of the reaction

H2(g) + ½ O2 -> H2O (l)

under standard conditions is:

NUMS 2017
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Molar heat of vaporization is the amount of heat required to convert one mole of:

NUMS 2020
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When two moles of H2 and one mole of O2 react to form H2O, 484 KJ heat is evolved. What is Δ Hf for one mole of H2O?

NUMS 2019 Reconduct
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Heat of vaporization of water is kcal/kg

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Which of the following condition is constant in Bomb calorimeter?

PMC Practice 1
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One Calorie is equal to:

PMC 2020
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Transfer of heat from hot surroundings to a cold refrigerator is an example of:

NUMS 2014
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A catalyst increases the rate of reaction by:

NTS 2019
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If pressure and volume of a gas are variable while temperature remains constant, this belongs to

PMC Sample 2
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Energy for the endothermic reaction is given a ____ value?

PMC Practice 1
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The heat of a reaction can be calculated by using:

NTS 2010
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During a chemical reaction, heat of Formation Is:

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Born Haber cycle is used to determine:

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The measurement of heat absorbed or given out in a chemical reaction is referred to as:

NTS 2011
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Which of the following statements is NOT true for the first law of thermodynamics?

NTS 2014
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In chemistry the work is generally ___.

PMC Sample 1
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Given the bond energy N ≡ N, N – H and H – H bonds are 945, 391, and 436 kJmol-1 respectively, the enthalpy of the reaction N2 (g) + 3H2(g) -> 2NH3 (g) is;

NUMS 2017
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Formation of carbon dioxide hinders in calculating the heat of formation of:

PMC Practice 1
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What is the measure of activation energy in an endothermic reaction?

UHS 2019
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In an adiabatic process:

NUMS 2016
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Cl + e —-> Cl-

ΔH = -348kJ/mol

The value -348KJ/mol in this case will be:

NTS 2012
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The enthalpy change accompanying the gain of an electron by a neutral gaseous atom to form a negative ion is called:

NTS 2010
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Through what phenomenons does heat flow?

PMC Sample 2
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Two rocket fuels below are determined by their high performance.

N2H4(l) + O2(g) -> N2(g) + 2H2O(l) ΔH= -632 kJ

H2 (g) + ½ O2(g) -> H2O(l) ΔH = -286 kJ

If equal masses of hydrazine and hydrogen are used, which of the following has better performance?

NUMS 2019 Cancelled
Chemistry
Thermochemistry
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Work done on the system is

PMC Sample 1
Chemistry
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The reaction 2CO + O2 -> 2CO2 proceeds slower because activation energy is:

NTS 2018
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One Calorie is equivalent to:

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Which one is not related to evaporation?

NUMS 2015
Chemistry
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States of Matter
States of Matter – Gases, Liquids and Solids
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Which of following is NOT state variable of thermodynamics?

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Burning of fuel is a

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Which one of the following equations correctly defines the enthalpy changes of formation of carbon monoxide:

NUMS 2018
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Heat of Neutralization is defined as:

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In those reactions where determination of enthalpy value is difficult by experiments, in such cases enthalpy value can be calculated by:

NTS 2014
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Heat evolved or absorbed in a chemical reaction does not depend upon?

NTS 2016 SMBBMC
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Enthalpy of a compound is equal to its

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Starting point of Kelvin scale is:

NUMS 2020
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If a system absorbs heat, the surrounding temperature

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The enthalpy of certain reactions at 273 K is -20.75 kJ. The enthalpy of the same reaction at 373 K (if heat capacities of reactants and products are the same) will be:

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Which of the following has the maximum specific heat?

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Which enthalpy change is relevant in the following process

Na(s) -> Na (g) ΔH = +107

UHS 2019
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Thermochemistry is very important to learn about

PMC Sample 1
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Anything under test or observation in laboratory is called

PMC Sample 2
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Exothermic Reactions heat is

PMC Sample 2
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The thermal energy at constant pressure is called:

PMC 2020
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For a chemical reaction A -> B, the threshold energy of the reaction is 37 kJ/mole. The average internal energy of A is 12 kJ/Mole. What will be the activation energy of A?

NTS 2016 SMBBMC
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Which ion will have a maximum value of the heat of hydration?

PMC Practice 1
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The net heat change in a chemical reaction is the same whether it is brought about in two or more different ways in one or several steps. This is known as:

NTS 2019
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For a reaction given below

C(s) + O2 (g) -> CO2 (g) + 394 kJ / mol

The enthalpy of reaction is

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ΔH = ΔE + PΔV is the change in enthalpy at constant ________.

NUMS 2018
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For a chemical reaction A + B, the threshold energy of the reaction is 31 KJ/mole. The average internal energy of A is 12 KJ/mole. What will be the activation energy of A?

NUMS 2018
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Lattice Energy of ionic compounds are found by

PMC Sample 3
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Chemical Bonding
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Which of the following are the fundamental ways of transferring energy?

NUMS 2014
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Which of the following values of heat of formation indicates that the product is least stable?

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Value of heat capacity of water is

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Some substances lack definite heats of fusion. These substances are:

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