NUST entry test 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
PLS Boost Bundle
Get Access to 20 thousands+ MCQs Including Topical MCQs, Practice Tests, Mock Tests, Solved Past Papers, Flashcards, Notes, FLPS, and Much More.
Molar heat of vaporization is the amount of heat required to convert one mole of:
NUMS 2020
Chemistry
Thermochemistry
Elimination Tool:
Some substances lack definite heats of fusion. These substances are:
NUMS 2020
Chemistry
Thermochemistry
Elimination Tool:
Transfer of heat from hot surroundings to a cold refrigerator is an example of:
NUMS 2014
Chemistry
Thermochemistry
Elimination Tool:
Which ion will have a maximum value of the heat of hydration?
PMC Practice 1
Chemistry
Thermochemistry
Elimination Tool:
Burning of fuel is a
Lattice Energy of ionic compounds are found by
PMC Sample 3
Chemistry
Chemical Bonding
Thermochemistry
Elimination Tool:
One Calorie is equivalent to:
NTS 2019
Chemistry
Thermochemistry
Elimination Tool:
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
Chemistry
Thermochemistry
Elimination Tool:
Which of the following values of heat of formation indicates that the product is least stable?
NTS 2017
Chemistry
Thermochemistry
Elimination Tool:
Which of the following condition is constant in Bomb calorimeter?
PMC Practice 1
Chemistry
Thermochemistry
Elimination Tool:
Which enthalpy change is relevant in the following process
Na(s) -> Na (g) ΔH = +107
UHS 2019
Chemistry
Thermochemistry
Elimination Tool:
Formation of carbon dioxide hinders in calculating the heat of formation of:
PMC Practice 1
Chemistry
Thermochemistry
Elimination Tool:
The measurement of heat absorbed or given out in a chemical reaction is referred to as:
NTS 2011
Chemistry
Thermochemistry
Elimination Tool:
Which of the following are the fundamental ways of transferring energy?
NUMS 2014
Chemistry
Thermochemistry
Elimination Tool:
Born Haber cycle is used to determine:
PMC 2020
Chemistry
Thermochemistry
Elimination Tool:
Energy for the endothermic reaction is given a ____ value?
PMC Practice 1
Chemistry
Thermochemistry
Elimination Tool:
Enthalpy of a compound is equal to its
NUMS 2016
Chemistry
Thermochemistry
Elimination Tool:
In an adiabatic process:
NUMS 2016
Chemistry
Thermochemistry
Elimination Tool:
Heat evolved or absorbed in a chemical reaction does not depend upon?
NTS 2016 SMBBMC
Chemistry
Thermochemistry
Elimination Tool:
In chemistry the work is generally ___.
PMC Sample 1
Chemistry
Thermochemistry
Elimination Tool:
If pressure and volume of a gas are variable while temperature remains constant, this belongs to
PMC Sample 2
Chemistry
Thermochemistry
Elimination Tool:
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
Chemistry
Thermochemistry
Elimination Tool:
Which of the following has the maximum specific heat?
Which one of the following equations correctly defines the enthalpy changes of formation of carbon monoxide:
NUMS 2018
Chemistry
Thermochemistry
Elimination Tool:
Which of following is NOT state variable of thermodynamics?
Exothermic Reactions heat is
PMC Sample 2
Chemistry
Thermochemistry
Elimination Tool:
Work done on the system is
PMC Sample 1
Chemistry
Thermochemistry
Elimination Tool:
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
Chemistry
Thermochemistry
Elimination Tool:
If a system absorbs heat, the surrounding temperature
The reaction 2CO + O2 -> 2CO2 proceeds slower because activation energy is:
NTS 2018
Chemistry
Thermochemistry
Elimination Tool:
In those reactions where determination of enthalpy value is difficult by experiments, in such cases enthalpy value can be calculated by:
NTS 2014
Chemistry
Thermochemistry
Elimination Tool:
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
Elimination Tool:
Cl + e —-> Cl-
ΔH = -348kJ/mol
The value -348KJ/mol in this case will be:
NTS 2012
Chemistry
Thermochemistry
Elimination Tool:
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
Chemistry
Thermochemistry
Elimination Tool:
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
Elimination Tool:
Heat of vaporization of water is kcal/kg
ΔH = ΔE + PΔV is the change in enthalpy at constant ________.
NUMS 2018
Chemistry
Thermochemistry
Elimination Tool:
The enthalpy change of the reaction
H2(g) + ½ O2 -> H2O (l)
under standard conditions is:
NUMS 2017
Chemistry
Thermochemistry
Elimination Tool:
One Calorie is equal to:
PMC 2020
Chemistry
Thermochemistry
Elimination Tool:
Thermochemistry is very important to learn about
PMC Sample 1
Chemistry
Thermochemistry
Elimination Tool:
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
Chemistry
Thermochemistry
Elimination Tool:
Through what phenomenons does heat flow?
PMC Sample 2
Chemistry
Thermochemistry
Elimination Tool:
The heat of a reaction can be calculated by using:
NTS 2010
Chemistry
Thermochemistry
Elimination Tool:
The enthalpy change accompanying the gain of an electron by a neutral gaseous atom to form a negative ion is called:
NTS 2010
Chemistry
Thermochemistry
Elimination Tool:
Anything under test or observation in laboratory is called
PMC Sample 2
Chemistry
Thermochemistry
Elimination Tool:
During a chemical reaction, heat of Formation Is:
A catalyst increases the rate of reaction by:
NTS 2019
Chemistry
Thermochemistry
Elimination Tool:
Which of the following statements is NOT true for the first law of thermodynamics?
NTS 2014
Chemistry
Thermochemistry
Elimination Tool:
Heat of Neutralization is defined as:
Starting point of Kelvin scale is:
NUMS 2020
Chemistry
Thermochemistry
Elimination Tool:
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:
NTS 2017
Chemistry
Thermochemistry
Elimination Tool:
For a reaction given below
C(s) + O2 (g) -> CO2 (g) + 394 kJ / mol
The enthalpy of reaction is
NTS 2016 SMBBMC
Chemistry
Thermochemistry
Elimination Tool:
What is the measure of activation energy in an endothermic reaction?
UHS 2019
Chemistry
Thermochemistry
Elimination Tool:
Value of heat capacity of water is
The thermal energy at constant pressure is called:
PMC 2020
Chemistry
Thermochemistry
Elimination Tool:
Which one is not related to evaporation?
NUMS 2015
Chemistry
Thermochemistry
States of Matter
States of Matter – Gases, Liquids and Solids
Elimination Tool: