A sample of gas follows process AB, then which of the following is incorrect about...| Doubtify JEE Doubtify JEE 4,54 тыс. подписчиков Скачать
A sample of gas follows process AB, then which of the following is incorrect about...| Doubtify JEE Скачать
The Total number of structural mono-chloro-derivatives possible in C₅H₁₂ is : (1) 6...| Doubtify JEE Скачать
A movable piston separates a sample of gas from vacuum. In this state, pressure of...| Doubtify JEE Скачать
Which of the following compound cannot have a π bond?(1) C₁₀H₂₁N (2) C₇H₁₂ (3) C₂₀..| Doubtify JEE Скачать
The value of Cᵥ for monoatomic gas is 3/2R, then Cₚ will be:(1) 1/2R (2) 7/2R...| Doubtify JEE Скачать
A container is closed by a movable piston. We supply heat to gas inside container...| Doubtify JEE Скачать
A sample of gas follows process AB, then which of the following is incorrect about...| Doubtify JEE Скачать
The following graph represents process A → B. In the process : (1) ∆P = 0 (2) ∆W =...| Doubtify JEE Скачать
A movable piston separates a sample of gas from vacuum. In this state, pressure of...| Doubtify JEE Скачать
If a gas of volume 10 L is expanded to quadruple its volume at 4 atm pressure, the...| Doubtify JEE Скачать
The value of Cᵥ for monoatomic gas is 3/2R, then Cₚ will be:(1) 1/2R (2) 7/2R...| Doubtify JEE Скачать
The following graph represents process A → B. In the process : (1) ∆P = 0 (2) ∆W =...| Doubtify JEE Скачать
An electron collides with a Hydrogen atom in its ground state. The Hydrogen atom...| Doubtify JEE Скачать
If a gas of volume 10 L is expanded to quadruple its volume at 4 atm pressure, the...| Doubtify JEE Скачать
The maximum amount of work done, which can be obtained by supplying 400 cal of heat...| Doubtify JEE Скачать
The half-life of Cs-137 is 9.45 × 10⁸ s and its atomic weight is 36.9 u. The activity.| Doubtify JEE Скачать
An electron collides with a Hydrogen atom in its ground state. The Hydrogen atom...| Doubtify JEE Скачать
There are two parallel black sheets of infinite dimensions at temperature T K and 2T..| Doubtify JEE Скачать
The maximum amount of work done, which can be obtained by supplying 400 cal of heat...| Doubtify JEE Скачать
A bullet of mass 10 g moving with speed of 120 m/s hits an ice block of mass 990 g...| Doubtify JEE Скачать
The half-life of Cs-137 is 9.45 × 10⁸ s and its atomic weight is 36.9 u. The activity.| Doubtify JEE Скачать
A loop of 6.28 cm long thread is put gently on a soap film in a wire loop. The film...| Doubtify JEE Скачать
There are two parallel black sheets of infinite dimensions at temperature T K and 2T..| Doubtify JEE Скачать
A conical body of height h is floating in between two liquid layers having densities..| Doubtify JEE Скачать
A bullet of mass 10 g moving with speed of 120 m/s hits an ice block of mass 990 g...| Doubtify JEE Скачать
A fully loaded Boeing aircraft has a mass of 5.4 × 10⁵ kg. Its total wing area is...| Doubtify JEE Скачать
A loop of 6.28 cm long thread is put gently on a soap film in a wire loop. The film...| Doubtify JEE Скачать
Filament of an incandescent bulb has length ℓ and radius of cross-section r. Rating...| Doubtify JEE Скачать
A conical body of height h is floating in between two liquid layers having densities..| Doubtify JEE Скачать
80 gm of water at 30°C is poured on a large block of ice at 0°C. The mass of ice...| Doubtify JEE Скачать
A fully loaded Boeing aircraft has a mass of 5.4 × 10⁵ kg. Its total wing area is...| Doubtify JEE Скачать
The temperature gradient in a rod of 0.5 m long is 80°C/m. If the temperature of...| Doubtify JEE Скачать
Filament of an incandescent bulb has length ℓ and radius of cross-section r. Rating...| Doubtify JEE Скачать
Glycerin of density 1.25 × 10³ kg m⁻³ is flowing through the conical section of pipe..| Doubtify JEE Скачать
The temperature gradient in a rod of 0.5 m long is 80°C/m. If the temperature of...| Doubtify JEE Скачать
Equal masses of three liquids A, B and C have temperatures 10°C, 25°C and 40°C...| Doubtify JEE Скачать
80 gm of water at 30°C is poured on a large block of ice at 0°C. The mass of ice...| Doubtify JEE Скачать
Equal masses of three liquids A, B and C have temperatures 10°C, 25°C and 40°C...| Doubtify JEE Скачать
The diameter of an air bubble which was initially 2 mm, rises steadily through a...| Doubtify JEE Скачать
Glycerin of density 1.25 × 10³ kg m⁻³ is flowing through the conical section of pipe..| Doubtify JEE Скачать
When the voltage applied to an X-ray tube is increased to 1.5 times, the minimum...| Doubtify JEE Скачать
The diameter of an air bubble which was initially 2 mm, rises steadily through a...| Doubtify JEE Скачать
The Kα X-ray emission line of tungsten occurs at λ = 0.021 nm. The energy difference..| Doubtify JEE Скачать
When the voltage applied to an X-ray tube is increased to 1.5 times, the minimum...| Doubtify JEE Скачать
A cylindrical container of radius 'r' and height 'h' is completely filled with a...| Doubtify JEE Скачать
A hydrogen atom initially in its first excited state absorbs a photon of energy x ...| Doubtify JEE Скачать
The Kα X-ray emission line of tungsten occurs at λ = 0.021 nm. The energy difference..| Doubtify JEE Скачать
Three rods made of the same material and having the same cross-section have been...| Doubtify JEE Скачать
A cylindrical container of radius 'r' and height 'h' is completely filled with a...| Doubtify JEE Скачать
Five rods of same dimensions are arranged as shown in the figure. They have thermal...| Doubtify JEE Скачать
Three rods made of the same material and having the same cross-section have been...| Doubtify JEE Скачать
The electric potential between a proton and an electron is given by V = V₀ ln(r/r₀)...| Doubtify JEE Скачать
Five rods of same dimensions are arranged as shown in the figure. They have thermal...| Doubtify JEE Скачать
A small particle of mass m moves in such a way that its potential energy U=1/2 mω² ...| Doubtify JEE Скачать
The electric potential between a proton and an electron is given by V = V₀ ln(r/r₀)...| Doubtify JEE Скачать
√d₁ and √d₁ are the impact parameters corresponding to scattering angles 60° and 90°..| Doubtify JEE Скачать
A small particle of mass m moves in such a way that its potential energy U=1/2 mω² ...| Doubtify JEE Скачать
In an Coolidge tube, the potential difference between cathode and anticathode is...| Doubtify JEE Скачать
√d₁ and √d₁ are the impact parameters corresponding to scattering angles 60° and 90°..| Doubtify JEE Скачать
If the de-Broglie wavelength of the 1st and 4th Bohr orbits in the H-atom is λ₁ and...| Doubtify JEE Скачать
In an Coolidge tube, the potential difference between cathode and anticathode is...| Doubtify JEE Скачать
Let A = [-5 -8 0 3 5 0 1 2 -1] and B = A + A² + A⁴ + A⁸ +…...+ A 2⁷⁸ ), then...| Doubtify JEE Скачать
If the de-Broglie wavelength of the 1st and 4th Bohr orbits in the H-atom is λ₁ and...| Doubtify JEE Скачать
Let A be a symmetric matrix of order 2 with integer entries. If the sum of the...| Doubtify JEE Скачать
Let A = [-5 -8 0 3 5 0 1 2 -1] and B = A + A² + A⁴ + A⁸ +…...+ A 2⁷⁸ ), then...| Doubtify JEE Скачать
Consider an electron in a hydrogen atom, revolving in its second excited state...| Doubtify JEE Скачать
Let A be a symmetric matrix of order 2 with integer entries. If the sum of the...| Doubtify JEE Скачать
Consider an electron in a hydrogen atom, revolving in its second excited state...| Doubtify JEE Скачать
An electron of mass ‘m’ and charge ‘e’, initially at rest gets accelerated by a...| Doubtify JEE Скачать
A radio transmitter radiates 1 kW power at a wavelength 198.6 m. How many photons...| Doubtify JEE Скачать
An electron of mass ‘m’ and charge ‘e’, initially at rest gets accelerated by a...| Doubtify JEE Скачать
A gas of monoatomic hydrogen is bombarded with a stream of electrons that have been...| Doubtify JEE Скачать
A radio transmitter radiates 1 kW power at a wavelength 198.6 m. How many photons...| Doubtify JEE Скачать
Magnetic moment due to the motion of the electron in nth energy of hydrogen atom...| Doubtify JEE Скачать
A gas of monoatomic hydrogen is bombarded with a stream of electrons that have been...| Doubtify JEE Скачать
According to photon theory of light, which of the following physical quantities...| Doubtify JEE Скачать
Magnetic moment due to the motion of the electron in nth energy of hydrogen atom...| Doubtify JEE Скачать
A proton has kinetic energy E = 100 keV which is equal to that of a photon. The...| Doubtify JEE Скачать
According to photon theory of light, which of the following physical quantities...| Doubtify JEE Скачать
From a 60 meter high tower angles of depression of the top and bottom of a house...| Doubtify JEE Скачать
A proton has kinetic energy E = 100 keV which is equal to that of a photon. The...| Doubtify JEE Скачать
100 mL of PH₃ on decomposition produced phosphorus (P₄) and hydrogen (H₂). The...| Doubtify JEE Скачать
The shadow of a tower is found to be 60 metre shorter when the sun's altitude ...| Doubtify JEE Скачать
From a 60 meter high tower angles of depression of the top and bottom of a house...| Doubtify JEE Скачать
An electron of mass 'm' and charge 'e', initially at rest gets accelerated by a...| Doubtify JEE Скачать
100 mL of PH₃ on decomposition produced phosphorus (P₄) and hydrogen (H₂). The...| Doubtify JEE Скачать
The shadow of a tower is found to be 60 metre shorter when the sun's altitude ...| Doubtify JEE Скачать
An electron of mass 'm' and charge 'e', initially at rest gets accelerated by a...| Doubtify JEE Скачать
The angle of elevation of a jet plane from a point A on the ground is 60°. After a...| Doubtify JEE Скачать
If the angle of elevation of a cloud from a point P which is 25 m above a lake be...| Doubtify JEE Скачать
Two vertical parallel glass plates are partially submerged in water. The distance...| Doubtify JEE Скачать
The angle of elevation of a jet plane from a point A on the ground is 60°. After a...| Doubtify JEE Скачать
If the angle of elevation of a cloud from a point P which is 25 m above a lake be...| Doubtify JEE Скачать
10 gm of ice at –20°C is kept into a calorimeter containing 10 gm of water at 10°C...| Doubtify JEE Скачать
The compounds C₅H₁₀O(pentan-3-one) and C₅H₁₀O(3-methylpentan-2-one) are : (1) Chain...| Doubtify JEE Скачать
Two vertical parallel glass plates are partially submerged in water. The distance...| Doubtify JEE Скачать
A large cylindrical tank has a hole of area A at its bottom and water is poured into..| Doubtify JEE Скачать
10 gm of ice at –20°C is kept into a calorimeter containing 10 gm of water at 10°C...| Doubtify JEE Скачать
The compounds C₅H₁₀O(pentan-3-one) and C₅H₁₀O(3-methylpentan-2-one) are : (1) Chain...| Doubtify JEE Скачать
A large container (with open top) of negligible mass and uniform cross-sectional...| Doubtify JEE Скачать
A large cylindrical tank has a hole of area A at its bottom and water is poured into..| Doubtify JEE Скачать
Figure shows a crude type of atomizer. When bulb A is compressed, air flows swiftly...| Doubtify JEE Скачать
A large container (with open top) of negligible mass and uniform cross-sectional...| Doubtify JEE Скачать
The manometer shown below is used to measure the difference in water level between...| Doubtify JEE Скачать
Figure shows a crude type of atomizer. When bulb A is compressed, air flows swiftly...| Doubtify JEE Скачать
A liquid is kept in a cylindrical vessel which is being rotated about its axis...| Doubtify JEE Скачать
The manometer shown below is used to measure the difference in water level between...| Doubtify JEE Скачать
A liquid is kept in a cylindrical vessel which is being rotated about its axis...| Doubtify JEE Скачать
A square gate of size 1 m × 1 m is hinged at its mid-point and is free to rotate...| Doubtify JEE Скачать
A square gate of size 1 m × 1 m is hinged at its mid-point and is free to rotate...| Doubtify JEE Скачать
An observer in a boat finds that the angle of elevation of a tower standing on the...| Doubtify JEE Скачать
An observer in a boat finds that the angle of elevation of a tower standing on the...| Doubtify JEE Скачать
A glass flask of volume 200 cm³ is just filled with mercury at 20°C. The amount of...| Doubtify JEE Скачать
A glass flask of volume 200 cm³ is just filled with mercury at 20°C. The amount of...| Doubtify JEE Скачать
What is the index of hydrogen deficiency in the molecule C₁₂H₁₇NO ?(1) 4 (2) 5...| Doubtify JEE Скачать
What is the index of hydrogen deficiency in the molecule C₁₂H₁₇NO ?(1) 4 (2) 5...| Doubtify JEE Скачать
Two vertical poles of height 20m and 80m stand apart on a horizontal plane. The...| Doubtify JEE Скачать
Two vertical poles of height 20m and 80m stand apart on a horizontal plane. The...| Doubtify JEE Скачать
When a copper ball is heated, the largest percentage increase will occur in its : ...| Doubtify JEE Скачать
When a copper ball is heated, the largest percentage increase will occur in its : ...| Doubtify JEE Скачать
Co-efficient of variation of two distributions are 25 and 30 and their standard...| Doubtify JEE Скачать
Co-efficient of variation of two distributions are 25 and 30 and their standard...| Doubtify JEE Скачать
Three dimensional arrangements which can be interconverted into one another due to...| Doubtify JEE Скачать
Three dimensional arrangements which can be interconverted into one another due to...| Doubtify JEE Скачать
The sum of squares of deviations for 10 observations taken from mean 50 is 250. The...| Doubtify JEE Скачать
The sum of squares of deviations for 10 observations taken from mean 50 is 250. The...| Doubtify JEE Скачать
The IUPAC name for the following compound is : (1) 3-methyl-4-(1-methylprop-2-ynyl)...| Doubtify JEE Скачать
The IUPAC name for the following compound is : (1) 3-methyl-4-(1-methylprop-2-ynyl)...| Doubtify JEE Скачать
A metre rod of silver at 0°C is heated to 100°C. It's length is increased by 0.19 cm..| Doubtify JEE Скачать
A metre rod of silver at 0°C is heated to 100°C. It's length is increased by 0.19 cm..| Doubtify JEE Скачать
On centigrade scale the temperature of a body increases by 30 degrees. The increase...| Doubtify JEE Скачать
On centigrade scale the temperature of a body increases by 30 degrees. The increase...| Doubtify JEE Скачать
The variance of the following data is : 6, 7, 8, 12, 13, 15(1) 12.05 (2) 11.14 (3...| Doubtify JEE Скачать
The variance of the following data is : 6, 7, 8, 12, 13, 15(1) 12.05 (2) 11.14 (3...| Doubtify JEE Скачать
The mean deviation about the median for the following data :(1) 2.6 (2) 1.85 (3)...| Doubtify JEE Скачать
The mean deviation about the median for the following data :(1) 2.6 (2) 1.85 (3)...| Doubtify JEE Скачать
The mean deviation about the mean for the following data :(1) 25 (2) 22.4 (3) 31.5..| Doubtify JEE Скачать
The mean deviation about the mean for the following data :(1) 25 (2) 22.4 (3) 31.5..| Doubtify JEE Скачать
The IUPAC name of the compound : (1) 3-methly-6-ethylcyclohexene(2) 6-ethyl-3-methly..| Doubtify JEE Скачать
The IUPAC name of the compound : (1) 3-methly-6-ethylcyclohexene(2) 6-ethyl-3-methly..| Doubtify JEE Скачать
Compound having molecular formula C₅H₁₂O cannot show : (1) Tautomerism (2) Position...| Doubtify JEE Скачать
Compound having molecular formula C₅H₁₂O cannot show : (1) Tautomerism (2) Position...| Doubtify JEE Скачать
A constant volume gas thermometer shows pressure reading of 50 cm and 90 cm of...| Doubtify JEE Скачать
A constant volume gas thermometer shows pressure reading of 50 cm and 90 cm of...| Doubtify JEE Скачать
The IUPAC name of the compound :(1) 3-diisopropyl-2, 4-dimethylpentane(2) 2, 4-di...| Doubtify JEE Скачать
The IUPAC name of the compound :(1) 3-diisopropyl-2, 4-dimethylpentane(2) 2, 4-di...| Doubtify JEE Скачать
The mean deviation about the mean for the following data is : (1) 4.283 (2) 3.463...| Doubtify JEE Скачать
The mean deviation about the mean for the following data is : (1) 4.283 (2) 3.463...| Doubtify JEE Скачать
On the Celsius scale, the absolute zero of temperature is at : (1) 0 °C (2) -32 °...| Doubtify JEE Скачать
On the Celsius scale, the absolute zero of temperature is at : (1) 0 °C (2) -32 °...| Doubtify JEE Скачать
Following are the marks obtained by 9 students in a mathematics test 50, 69, 20, 33...| Doubtify JEE Скачать
Following are the marks obtained by 9 students in a mathematics test 50, 69, 20, 33...| Doubtify JEE Скачать
The mean deviation about the median for the following data is : 7, 5, 4, 3, 2, 11,...| Doubtify JEE Скачать
The mean deviation about the median for the following data is : 7, 5, 4, 3, 2, 11,...| Doubtify JEE Скачать
When tested, the lines (in hours) of 5 bulbs were notes as follows : 1357, 1090,...| Doubtify JEE Скачать
When tested, the lines (in hours) of 5 bulbs were notes as follows : 1357, 1090,...| Doubtify JEE Скачать
Mean deviation for n observations x₁, x₂, ...., xₙ from their mean x̄ is given by...| Doubtify JEE Скачать
Mean deviation for n observations x₁, x₂, ...., xₙ from their mean x̄ is given by...| Doubtify JEE Скачать
The mean deviation from the median is : (1) Equal to that measured from any another...| Doubtify JEE Скачать
The mean deviation of the numbers 11, 12, 13, 14, 15 about the mean is : (1) 1 (2)...| Doubtify JEE Скачать
The ratio of intensity between two coherent sound sources is 4:1. When they interfer..| Doubtify JEE Скачать
The ratio of intensity between two coherent sound sources is 4:1. When they interfer..| Doubtify JEE Скачать
The figure shows the snapshot of a traveling sine wave in a string. Four elemental...| Doubtify JEE Скачать
An isotropic point source S of sound emits constant power. Two points A and B...| Doubtify JEE Скачать
An isotropic point source S of sound emits constant power. Two points A and B...| Doubtify JEE Скачать
The speed of sound in hydrogen at NTP is 1270 m/s. Then the speed in m/s in a mixture.| Doubtify JEE Скачать
The speed of sound in hydrogen at NTP is 1270 m/s. Then the speed in m/s in a mixture.| Doubtify JEE Скачать
Two balls of charges q₁ and q₂ initially have exactly same velocity. Both the balls...| Doubtify JEE Скачать
Under the influence of the coulomb field of charge +Q, a charge -q is moving around...| Doubtify JEE Скачать
Two balls of charges q₁ and q₂ initially have exactly same velocity. Both the balls...| Doubtify JEE Скачать
Under the influence of the coulomb field of charge +Q, a charge -q is moving around...| Doubtify JEE Скачать
A charge Q is uniformly distributed over a semi-circular ring of radius R. A point ...| Doubtify JEE Скачать
A charge Q is uniformly distributed over a semi-circular ring of radius R. A point ...| Doubtify JEE Скачать
A charge Q is placed a distance d above a corner of a square sheet of side length d...| Doubtify JEE Скачать
A charge Q is placed a distance d above a corner of a square sheet of side length d...| Doubtify JEE Скачать
Two points charge +4q and +q are separated by distance r, where should a third point..| Doubtify JEE Скачать
Two points charge +4q and +q are separated by distance r, where should a third point..| Doubtify JEE Скачать
Which of the following is incorrect?(1) Electric charge obeys law of conservation ...| Doubtify JEE Скачать
Which of the following is incorrect?(1) Electric charge obeys law of conservation ...| Doubtify JEE Скачать
The force of repulsion between two point charges is F, when they are d distance...| Doubtify JEE Скачать
The force of repulsion between two point charges is F, when they are d distance...| Doubtify JEE Скачать
Two identical small bodies each of mass m and charge q are suspended from two strings.| Doubtify JEE Скачать
Two identical small bodies each of mass m and charge q are suspended from two strings.| Doubtify JEE Скачать
The wavelength of the note emitted by a tuning fork of frequency 100 Hz is 3.32 m...| Doubtify JEE Скачать
The wavelength of the note emitted by a tuning fork of frequency 100 Hz is 3.32 m...| Doubtify JEE Скачать
A thick uniform rope of length L is hanging from a rigid support. A transverse wave...| Doubtify JEE Скачать
A thick uniform rope of length L is hanging from a rigid support. A transverse wave...| Doubtify JEE Скачать
The temperature at which the velocity of sound in air becomes double its velocity...| Doubtify JEE Скачать
The temperature at which the velocity of sound in air becomes double its velocity...| Doubtify JEE Скачать
At room temperature (27°C), the velocity of sound in air is 330 m/s. The increase...| Doubtify JEE Скачать
![Let A = [-5 -8 0 3 5 0 1 2 -1] and B = A + A² + A⁴ + A⁸ +…...+ A 2⁷⁸ ), then...| Doubtify JEE](http://i.ytimg.com/vi/MecNfwpp-Sc/mqdefault.jpg)
![Let A = [-5 -8 0 3 5 0 1 2 -1] and B = A + A² + A⁴ + A⁸ +…...+ A 2⁷⁸ ), then...| Doubtify JEE](http://i.ytimg.com/vi/NSNG8bsQ_No/mqdefault.jpg)
![Let A = [-5 -8 0 3 5 0 1 2 -1] and B = A + A² + A⁴ + A⁸ +…...+ A 2⁷⁸ ), then...| Doubtify JEE](https://i.ytimg.com/vi/MecNfwpp-Sc/mqdefault.jpg)
![Let A = [-5 -8 0 3 5 0 1 2 -1] and B = A + A² + A⁴ + A⁸ +…...+ A 2⁷⁸ ), then...| Doubtify JEE](https://i.ytimg.com/vi/NSNG8bsQ_No/mqdefault.jpg)
