Multiple Choice Questions on Thermodynamics

-
Which law of thermodynamics deals with the concept of entropy?
    A) Zeroth Law
      B) First Law
        C) Second Law
          D) Third Law
            Answer: C) Second Law

              What does the first law of thermodynamics state?
                A) Energy cannot be created nor destroyed.
                  B) Entropy of an isolated system remains constant.
                    C) Heat always flows from a hotter object to a colder one.
                      D) Energy can be converted from one form to another.
                        Answer: A) Energy cannot be created nor destroyed.

                          Which type of process occurs at constant volume?
                            A) Isothermal
                              B) Isobaric
                                C) Adiabatic
                                  D) Isochoric
                                    Answer: D) Isochoric

                                    What is the maximum efficiency possible for a heat engine working between two temperatures according to the Carnot cycle?

                                    A) 50%
                                    B) 100%
                                    C) It depends on the type of fuel used.
                                    D) Determined by the size of the engine.
                                    Answer: B) 100%

                                    Which law of thermodynamics introduces the concept of temperature?

                                    A) Zeroth Law
                                    B) First Law
                                    C) Second Law
                                    D) Third Law
                                    Answer: A) Zeroth Law

                                    In a closed system, what quantities remain constant during a process if no heat is exchanged with the surroundings?

                                    A) Pressure
                                    B) Internal energy
                                    C) Volume
                                    D) Temperature
                                    Answer: B) Internal energy

                                    Entropy is a measure of:

                                    A) Disorder or randomness
                                    B) Total energy of a system
                                    C) Available work in a system
                                    D) Heat content of a system
                                    Answer: A) Disorder or randomness

                                    Which type of thermodynamic system allows both energy and matter exchange with the surroundings?
                                    A) Closed system
                                    B) Isolated system
                                    C) Open system
                                    D) Adiabatic system
                                    Answer: C) Open system

                                    Comments

                                    Post a Comment

                                    Popular posts from this blog

                                    Diagonal Relationship between Beryllium and Aluminium || Relation between Beryllium and Aluminium

                                    -
                                      Diagonal Relationship between Beryllium and Aluminium The ionic radius of Beryllium (Be 2+) is estimated to be nearly 31 pm; the charge/radius ratio Or e/m ratio is nearly the same as that of the Al 3+ ion. Hence beryllium resembles aluminium in these ways. Some of the similarities are given below: » Like Aluminium, Beryllium(be) is not readily attacked by acids H+ donor because of the formation of an oxide film on the surface of the metal by reacting with oxygen, i.e. they are rendered passive by nitric acid. » Beryllium hydroxide[[Be(OH)4]2] dissolves in excess of alkali to give a beryllate ion, [ Be(OH)4]2– just as aluminium hydroxide[Al(OH)3] gives aluminate ion, [Al(OH)4] » The chlorides of metals beryllium and aluminium have Cl– bridged chloride structure in vapour phase. Both the chlorides are soluble in organic solvents and are strong as Lewis acids They are used as Friedel Craft catalysts. » Beryllium(Be) and aluminium(Al) ions have strong tendency to form complexes, (BeF4)2
                                    Read more

                                    KVS CBSE Worksheets CHAPTER 1 Electric Charges and Fields Class 12

                                    -
                                    Image
                                                          SECTION A CONCEPTUAL AND APPLICATION TYPE QUESTIONS  1 Is the force acting between two point charges q1 and q2 kept at some distance apart in air attractive or repulsive when i) q1 q2 > 0 ii) q1 q2 < 0 ? 1 (2007)  2 If the distance between two equal point charges is doubled and their individual charges are also doubled ,what would happen to the force between them ? 1(2014)  3 Do the electrostatic field lines form closed loops? 1(2014)  4 A hollow metal sphere of radius 5cm is charged such that the potential on its is 10V. What is the electric field at the center of the sphere? 1(2011)  5 What is meant by the statement that   “the electric field of a point charge has spherical symmetry whereas electric field due to an electric dipole is cylindrically symmetrical’’ ? 1(1996)  6 Why is it difficult to perform electrostatic experiments on a humid day? 1  7 The distance of the field point on the equatorial plane of a small electric dipole , is halved. By wha
                                    Read more

                                    Kinematics Important Questions Of Physics

                                    -
                                    Ques 1. Mention the condition when an object is in motion (a) can be considered point object (b) can not be considered point object.  Ans . An object can be considered as a point object if (a) its size is negligible in comparison to the distance travelled by object (b) it's size is not negligible in comparison to the distance travelled by object. Ques 2 . Can Earth be regarded as a point object when it is describing its really journey around the sun? Ans.  Yes, because the diameter of earth is very small as compared to the radius of the orbital path of earth around the sun.   Ques 3. Can the speed of a body be negative?   Ans . No, because the speed of an object is the distance travelled by the by object in unit time and distance can never be negative. Ques 4. which speed is measured by the speedometer of your scooter?  Ans . The Speedometer measure the instantaneous speed of the scooter at a given instant of time. Ques 5.What does the slope of position time 
                                    Read more

                                    QUANTUM NUMBERS (Principal, Azimuthal, Magnetic and Spin)

                                    -
                                    Image
                                                      QUANTUM NUMBERS  Orbitals represent regions in the space around the nucleus where the probability of finding the electron is maximum. A large number of electron orbitals are possible in atom. These can be distinguished by their size, shape and orientation of the orbitals. To describe each electron in an atom in different orbitals, we need a set of three numbers known as quantum numbers. These are designated as n, l and m. In addition to these three numbers another quantum number is also needed which specifies the spin of the electron. These four numbers are called quantum numbers. These are discussed below: 1. Principal quantum number (n) :  This quantum number determines the main energy shell or level in which the electron is present. It is denoted by n. It can have whole number values starting from 1 such as n = 1, 2, 3, 4 ... This quantum number also identifies as shell. The shell with n 1 is called the first shell. The shell with n 2 is called the second shell and
                                    Read more

                                    NCERT Chemical Reactions and Equations Solutions || NCERT Solution Class 10 Science Chapter 1 || Chemistry || Science ||

                                    -
                                    Image
                                    Ques 1 : Which of the statements about the reaction below are incorrect?              2 P b O  +  C → 2 P b + CO (a) Lead is getting reduced. (b) Carbon dioxide is getting oxidised. (c) Carbon is getting oxidised. (d) Lead oxide is getting reduced. (i) (a) and (b) (i i) (a) and (c) (i i i) (a), (b) and (c) (i v) all Ans 1: (i)(a) and (b) Ques 2: The above reaction is an example of a:              Fe 2 O 3 +2 Al →Al 2 O 3  + 2 Fe (a) combination reaction. (b) double displacement reaction. (c) decomposition reaction. (d) displacement reaction. Ans 2: (d) The given reaction is an example of a displacement reaction. Ques 3: What happens when dilute hydrochloric acid is added to iron filings? Tick the correct answer. (a) Hydrogen gas and iron chloride are produced. (b) Chlorine gas and iron hydroxide are produced. (c) No reaction takes place. (d) Iron salt and water are produced. Ans 3: (a) Hydrogen gas and iron chloride are produced. The reaction is as  follows
                                    Read more