0 of 90 Questions completed
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading…
You must sign in or sign up to start the quiz.
You must first complete the following:
0 of 90 Questions answered correctly
Time has elapsed
You have reached 0 of 0 point(s), (0)
Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)
1.Figure shows the P-V diagram of an ideal gas undergoing a change of state from A to B. Four different parts I, II, III and IV as shown in the figure may lead to the same change of state.
a. Change in internal energy is the same in IV and III cases, but not in I and II.
b.Change in internal energy is the same in all four cases.
c.Work done is maximum in case I.
d.Work done is minimum in case II.CorrectIncorrect
2.The efficiency of a Carnot engine depends upon:CorrectIncorrect
3.The P-V diagram for an ideal gas in a piston-cylinder assembly undergoing a thermodynamic process is shown in the figure. The process is:CorrectIncorrect
4.The graph given below shows variation of specific heat capacity of water versus temperature.
From the graph given above, we can conclude that:CorrectIncorrect
5.. The graph below shows the processes involved in a Carnot engine.
For the two isotherms 1 and 2, the temperature of isotherm 1 is:CorrectIncorrect
6. By opening the door of a refrigerator inside a closed room:CorrectIncorrect
7.An ideal gas undergoes four different processes from the same initial state (figure). Four processes are adiabatic, isothermal, isobaric and isochoric. Out of 1, 2, 3 and 4, which one is adiabatic?CorrectIncorrect
8.1 g of water of volume 1 cm^3 at 100 °C is converted into steam at the same temperature under normal atmospheric pressure ≈1×10^5 Pa. The volume of steam formed equals 1671 cm^3. If the specific latent heat of vaporization of water is 2256 J/g, the change in internal energy is:CorrectIncorrect
Heat energy absorbed by a system in going through a cyclic process shown in figure isCorrectIncorrect
10. A sample of ideal monoatomic gas is taken round the cycle CBAC as shown in the figure. The work done during the cycle isCorrectIncorrect
11.The pressure of a monoatomic gas increases linearly from 4×10^5 N/m2 to 8×10^5 N/m2 when its volume increases from 0.2 m3 to 0.5 m3. Calculate molar heat capacity of the gas [R = 8.31 J/mol k]CorrectIncorrect
12.An ideal gas undergoes a cyclic process as shown in the graph between pressure (P) and temperature (T). The part of the graph which represents the absorption of heat from surrounding areCorrectIncorrect
13.The mean free path l for a gas molecule depends upon the diameter, d of the molecule as:CorrectIncorrect
14. An increase in temperature of a gas-filled in a container would lead to:CorrectIncorrect
15.A gas mixture consist of 2 moles of O2 and 4 moles of Ar at temperature T. Neglecting all vibrational modes, the total internal energy of the system is:CorrectIncorrect
16.One mole of an ideal monatomic gas undergoes a process described by the equation PV^3= constant. The heat capacity of the gas during this process is:CorrectIncorrect
17.A given sample of an ideal gas occupies a volume V at a pressure p and absolute temperature T. The mass of each molecule of the gas is m. Which of the following gives the density of the gas?CorrectIncorrect
18.The molecules of a given mass of gas have r.m.s velocity of 200 ms-1 at 27°C and 1.0 x 105 Nm-2 pressure. When the temperature and pressure of the gas are respectively, 127°C and 0.05 X 105 Nm-2 , the RMS velocity of its molecules in ms-1 is:CorrectIncorrect
19.The molecules of a given mass of gas have RMS. velocity of 200 ms-1 at 27 °C and 1.0×105 Nm-2 pressure. When the temperature and the pressure of the gas are respectively, 127 °C and 0.05×105 Nm-2, the RMS velocity of its molecules in ms-1 is:CorrectIncorrect
20.The ratio of the specific heats CP/CV=γ in terms of degrees of freedom (n) is given by –CorrectIncorrect
21.4.0 g of a gas occupies 22.4 L at NTP. The specific heat capacity of the gas at constant volume is 5.0 J K-1mol-1. If the speed of sound in this gas at NTP is 952 ms^−1 , then the heat capacity at constant pressure is: (Take gas constant R=8.3 JK-1mol-1)CorrectIncorrect
22.Two vessels separately contain two ideal gases A and B at the same temperature, the pressure of A being twice that of B. Under such conditions, the density of A is found to be 1.5 times the density of B. The ratio of molecular weight of A and B is:CorrectIncorrect
23.One mole of an ideal diatomic gas undergoes a transition from A to B along a path AB as shown in the figure.
The change in internal energy of the gas during the transition is:CorrectIncorrect
24.A monoatomic gas at a pressure p, having a volume V expands isothermally to a volume 2 V and then adiabatically to a volume 16 V. The final pressure of the gas is: (take γ=5/3)CorrectIncorrect
25.The mean free path of molecules of a gas, (radius r) is inversely proportional to :CorrectIncorrect
26.The molar specific heats of an ideal gas at constant pressure and volume are denoted by CP and CV respectively. If γ=CP/CV and R is the universal gas constant, then CV is equal toCorrectIncorrect
27.A second’s pendulum is mounted in a rocket. Its period of oscillation decreases when the rocket:CorrectIncorrect
28.A particle executes linear simple harmonic motion with an amplitude of of 3 cm. When the particle is at 2 cm from the mean position, the magnitude of its velocity is equal to that of its acceleration. Then, its time period in seconds isCorrectIncorrect
29.A body mass m is attached to the lower end of a spring whose upper end is fixed. The spring has neglible mass. When the mass m is slightly pulled down and released, it oscillates with a time period of 3s. When the mass m is increased by 1 kg, the time period of oscillations becomes 5s. The value of m in kg is-CorrectIncorrect
30.. The displacement of a particle along the x-axis is given by x=asin^2 ωt .The motion of the particle corresponds to:CorrectIncorrect
31. The period of oscillation of a mass M suspended from a spring of negligible mass is T. If along with it another mass M is also suspended, the period of oscillation will now beCorrectIncorrect
32. Two simple harmonic motions of angular frequency 100 and 1000 rad s−1 have the same displacement amplitude. The ratio of their maximum acceleration is –CorrectIncorrect
33.A spring of force constant k is cut into lengths of ratio 1:2:3. They are connected in series and the new force constant is k‘. Then they are connected in parallel and force constant is k’’. Then k’: k’’ is:CorrectIncorrect
34.A pendulum is hung from the roof of a sufficiently high building and is moving freely to and fro like a simple harmonic oscillator. The acceleration of the bob of the pendulum is 20 m/s2 at a distance of 5 m from the mean position. The time period of oscillation is:CorrectIncorrect
35.In a guitar, two strings A and B made of same material are slightly out of tune and produce beats of frequency 6 Hz. When tension in B is slightly decreased, the beat frequency increases to 7 Hz. If the frequency of A is 530 Hz, the original frequency of B will beCorrectIncorrect
36.The length of the string of a musical instrument is 90 cm and has a fundamental frequency of 120 Hz. Where should it be pressed to produce a fundamental frequency of 180 Hz?CorrectIncorrect
37.A tuning fork with a frequency 800 Hz produces resonance in a resonance column tube with the upper end open and the lower end closed by the water surface. Successive resonances are observed at lengths 9.75 cm, 31.25 cm, and 52.75 cm. The speed of sound in air is:CorrectIncorrect
38.A tuning fork is used to produce resonance in a glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of 27°C two successive resonances are produced at 20 cm and 73 cm column length. If the frequency of the tuning fork is 320 Hz, the velocity of sound in air at 27°C is:CorrectIncorrect
39. The fundamental frequency in an open organ pipe is equal to the third harmonic of a closed organ pipe. If the length of the closed organ pipe is 20 cm, the length of the open organ pipe is:CorrectIncorrect
40.Two cars moving in opposite directions approach each other with speed of 22m/s and 16.5 m/s respectively. The driver of the first car blows a horn having a frequency 400 Hz. The frequency heard by the driver of the second car is [velocity of sound 340m/s]CorrectIncorrect
The second overtone of an open organ pipe has the same frequency as the first overtone of a closed pipe L metre long. The length of the open pipe will beCorrectIncorrect
A source of sound S emitting waves of frequency 100 Hz and an observer O are located at some distance from each other. The source is moving with a speed of 19.4 ms-1 at an angle of 60° with the source observer line as shown in the figure. The observer is at rest. The apparent frequency observed by the observer (velocity of sound to air 330 ms-1), isCorrectIncorrect
43.4.0 gm of a gas occupies 22.4 litres at NTP. The specific heat capacity of the gas at constant volume is 5.0 JK-1 mol-1. If the speed of sound in the gas at NTP is 952 ms-1, then the molar heat capacity at constant pressure is:[Take R=8.31 JK^−1 mol^−1]CorrectIncorrect
44.A string is stretched between fixed points separated by 75.0 cm. It is observed to have resonant frequencies of 420 Hz and 315 Hz. There are no other resonant frequencies between these two. The lowest resonant frequency for this string is:CorrectIncorrect
45.If n1, n2 and n3 are, are the fundamental frequencies of three segments into which a string is divided, then the original fundamental frequency n of the string is given byCorrectIncorrect
46.Consider the reaction,
R-CHO + NH2-NH2 → R-CH=N-NH2
What type of reaction it is this?CorrectIncorrect
47.The IUPAC name of the compound CH3-CH2-CH2-CH(-C=CH2)-CH(-CH2-CH3)-CH2-CH3 is,CorrectIncorrect
48.C-H bond energy is about 101 kcal/mol for methane, ethane and other alkanes but is only 77 kcal/mol for C-H bond of CH3 is toluene. This is because,CorrectIncorrect
49.Paper chromatography is an example of,CorrectIncorrect
50.Among the following carbocations,
The order of stability is,CorrectIncorrect
51.Ethoxy ethane and methoxy propane are,CorrectIncorrect
52.Given below are the two statements:
Statement I: A mixture of chloroform and aniline can be separated by simple distillation.
Statement II: When separating aniline from a mixture of aniline and water by steam distillation, aniline boils below its boiling point.
In the light of the above statements, choose the most appropriate answer from the options given below,CorrectIncorrect
53.Generally, it is more difficult to purify organic compounds than inorganic compounds because,CorrectIncorrect
54.A mixture of ethane and ethene occupies 40 L at 1.00 atm and 400 K. The mixture reacts completely with 130 g of O2 to produce CO2 and H2 Assuming ideal gas behavior, the mole fractions of ethane and ethene in mixture are respectively,CorrectIncorrect
55.The isoelectronic set of ions is,CorrectIncorrect
56.Arrange the following compounds in order of increasing dipole moment, toluene (I), m-dichlorobenzene (II), o-dichlorobenzene (III), p-dichlorobenzene (IV),CorrectIncorrect
57.The compound which contains both ionic and covalent bonds is,CorrectIncorrect
58.The correct statements among I to III are,
I. Valence bond theory cannot explain the color exhibited by transition metal complexes.
II. Valence bond theory can predict quantitatively the magnetic properties of transition metal complexes.
III. Valence bond theory cannot distinguish ligands as weak and strong field ones.CorrectIncorrect
59.Total number of lone pair of electrons in I3– ion is,CorrectIncorrect
60.The correct statement for the molecule, CsI3 is,CorrectIncorrect
61.The species having bond order different from that in CO is,CorrectIncorrect
62.In the compound CH2=CH-CH2-CH2-C≡CH, the C2-C3 bonds is of,CorrectIncorrect
63.The geometry and the type of hybrid orbital present about the central atom in BF3 is,CorrectIncorrect
64.The bond between two identical non-metal atoms has a pair of electrons,CorrectIncorrect
65.The ammonia evolved from the treatment of 0.30 g of an organic compound for the estimation of nitrogen was passed in 100 mL of 0.1 M sulphuric acid. The excess of acid required 20 mL of 0.5 M NaOH solution for complete neutralization. The organic compound is,CorrectIncorrect
66.The correct order of bond dissociation energies for the indicated C-H bond in the following compounds is,CorrectIncorrect
67.Which of the following gives the correct order of decreasing electron-withdrawing effect?CorrectIncorrect
68.In Carius method of estimation of halogen, 0.172 g of an organic compound showed presence of 0.08 g of bromine. Which of the following is the compound?CorrectIncorrect
69.Which of the following reacts with KMnO4 but does not react with AgNO3?CorrectIncorrect
70.Consider the following addition reaction:CorrectIncorrect
71.Propyne and propene can be distinguished byCorrectIncorrect
72.Cetane is a compound which has very good ignition property. Chemically, it isCorrectIncorrect
73.An isomer of C5H12 gives total six isomeric products on monochlorination. What will be the percentage yield of the primary monochloride which is chiral? Consider the following relative reactivity of C-H bonds for chlorination:
Degree of C-H
Relative reactivity for chlorination
74.Which one of the following heptanols can be dehydrated to hept-3-ene only?CorrectIncorrect
75.The best method to prepare cyclohexane from cyclohexanol is by using,CorrectIncorrect
76.Which of the following alkane cannot be made in good yield by Wurtz reaction?CorrectIncorrect
77.Which of the following reagents can be used for the conversion of C6H5CH2CH3 to C6H5CH=CH2?CorrectIncorrect
78.Ethylidene dichloride is obtained by the reaction of excess of HCl with,CorrectIncorrect
79.The dihedral angle HCH in staggered conformation of C2H6 is,CorrectIncorrect
80.If a molecule MX3 has zero dipole moment, the sigma bonding orbitals used by M (atomic number < 21) are,CorrectIncorrect
81.How many moles of K2Cr2O7 can be reduced by 1 mole of Sn2+ ion?CorrectIncorrect
82. The oxidation states of ‘P’ in H4P2O7, H4P2O5 and H4P2O6, respectively, areCorrectIncorrect
83.The set that represents the pair of neutral oxides of nitrogen is:CorrectIncorrect
84.Given below are the two statements:
Statement I: Sodium hydride can be used as an oxidising agent.
Statement II: The lone pair of electrons on nitrogen in pyridine makes it basic.
In the light of the above statements, choose the most appropriate answer from the options given below,CorrectIncorrect
85.Consider the following reactions:
I. HOCl + H2O2 → H3O+ + Cl– + O2
II. I2 + H2O2 + 2OH– → 2I– + 2H2O + O2
Choose the correct option:CorrectIncorrect
86.The compound that cannot act both as oxidizing and reducing agent is:CorrectIncorrect
87.Stability of the species Li2, Li2– and Li2+ increases in the order of,CorrectIncorrect
88.Hyperconjugation involves overlap of which of the following orbitals?CorrectIncorrect
89.According to MO theory,CorrectIncorrect
90.Which one among the following does not have the hydrogen bond?CorrectIncorrect