AIPMT

Addition product of acetaldehyde and HCN on hydrolysis gives

Formaldehyde reacts with NH₃ forms

When chlorine is passed through moist calcium hydroxide, which of the following compound is formed?

Which of the following is wrong about ‘s’ block elements?

Which one of the following compounds when dissolved in water gives a solution with pH more than 7?

Which of the following is not a Lewis base?

Which of the following on hydrolysis will not form glucose only?

The correct name of the complex ion [Cr(ONO)NH₃­ (en)₂]⁺⁺  is

H₂O will not form complexes with

The reduction potential of four metals A, B, C and D are 0.76 V, 0.34 V, −0.25 V and −0.13 V respectively, then the order of metallic activity should be

Which of the following has highest boiling point?

When bromo propane is heated with alc. KOH, it produces

Which of the following examples cannot behave as a Bronsted base?

Which of the following is a weak base?

The IUPAC name of 

The optical isomers which are not superimposable of each other are called

The shape of SF₆ is

The rate of reaction will be tripled when temperature changes from 27°C to 57°C. What will be the activation energy of the reaction of R = 8.314 J k^–1 mol^–1?

Which of the following gases will not form clathrates in water, phenol or quinol?

The first ionization potentials in electron volts of nitrogen and oxygen atoms are respectively closer to

During the reaction between KMnO₄ and ammonia which of the following products are obtained?

When benzaldehyde reacts with acetaldehyde in presence of aq. NaOH, the product obtained is

Which of the following compound is heated to yield plaster of paris?

Identify the final product S.

During the digestion of nitrogen of organic compound in Kjeldahl’s method is converted into

Calculate the elevation in boiling point of a solution containing 0.5 g of benzoic acid in 50 gm of carbon disulphide assuming 80%  dimerisation of the acid.  K_b = 2.3 K kg mol⁻¹

Final product of of oxidation of alkane is

A vertical straight wire in which a current is flowing produces a neutral point with the earth’s magnetic field at a distance of 0.20 m from the wire. Find the current. H = 0.32 × 10^-4 Tesla

Two rigid boxes containing different ideal gases are placed on a table. Box A contains one mole of nitrogen at temperature T₀, while box B contains one mole of helium at temperature  . The  boxes are then put into thermal contact with each other and heat flows between them until the gases reach a common final temperature (ignore the heat capacity of boxes). Then, the final temperature of the gases, T_f in terms of T₀ is

Light of wavelength λ in air enters a medium of refractive index μ. Two points in this medium, lie along the path of this light, are at distance x apart. The phase difference between these points is

The ratio of the radii of gyration of a disc about a tangential axis in the plane of the disc and of a circular ring of the same radius about a tangential axis in the plane of the ring is

Two sources are at a finite distance apart. They emit sound of wavelength λ. An observer situated between them on line joining the sources, approaches towards one source with speed u, then the number of beats heard per second by observer will be

An inductive coil has a resistance of 100 Ω. When an AC signal of frequency 1000 Hz is applied to the coil, the voltage leads the current by 45°. The inductance of the coil is

The work functions for metals A, B and C are respectively 1.92 eV, 2.0 eV and 5 eV. According to Einstein’s equation, the metals which will emit photoelectrons for a radiation of wavelength 4100 Å is/are

If N identical drops each charged to energy E from a big drop the energy of the big drop will be

What happens to the centripetal acceleration of a body if its speed is tripled and angular momentum is halfed?

The breaking force for a wire of diameter D of a material is F. The breaking force for a wire of the same material of radius D is

A bullet of mass m and charge q is fired towards a uniformly charged solid sphere of radius R and total chare +q. If it strikes the surface of sphere with speed u, find the minimum speed u so that it can penetrate through the sphere.

(Neglect all resistance forces or fiction on bullet except electrostatic forces)

A transformer has efficiency of 75%. It works at 3 kw and 100 V. If the secondary voltage is 220 V, calculate the difference in primary and secondary currents.

In an electromagnetic wave, the amplitude of electric field is 1 V/m. The frequency of wave is 5 × 10¹⁴ Hz. The wave is propagating along  z-axis. The average energy density of electric field, in Joule/m³, will be

A car starting from rest covers a distance of 600m. The co-efficient of friction between the tyre and road is 0.3. Find the minimum time taken  by the car to cover the distance.

The position of an object is described by the function x(t) = 3t² + 5t + 2 where x in m and t in s. At 5s, what is the direction and speed of the object?

One mole of oxygen at 27℃ is enclosed in a vessel which is thermally insulated. The vessel is moved with constant speed ν and then suddenly stopped. The process results in a rise in temp. of gas by 1℃. If M = molecular mass of oxygen then which of the following is true?

Assuming the surface to be frictionless, find the horizontal force F that should be applied so that m₁ does not slide over m_2.

If a lens is moved towards the object from a distance of 20 cm to 15 cm, the magnification of the image remains the same. The focal length of the lens is

Two springs one of spring constant 100 Nm⁻¹ and the other of 300 N m⁻¹ are joined vertically one above the other and hung from a support at top. A mass of 3 kg is attached to the lower spring. The time period for simple harmonic motion of such a system is

Find the dimension of  

Typical silt (hard mud) particle of radius 20 μm is on the top of lake water, its density is 2000 kg/m³ and the viscosity of lake water is 1.0 mPa, density is 1000 kg/m³. If the lake is still (has no internal fluid motion) the terminal speed with which the particle hits the bottom of the lake is 

A and B are the radioactive substance with half-life periods 1 and 2 years respectively. Initially 10 g of A and 1 g B is to be taken then after how many time (approximately) the equal quantity of both substances will remain

A double convex lens, made of a material of refractive index μ, is placed inside two liquids or refractive indices μ₂ and μ₃, as shown. μ ₂ > μ₁ > μ₃. A wide, parallel beam of light is incident on the lens from the left. The lens will give rise to

A weightless thread bears a tension up to 3.7 kg wt. A stone of mass 500 g is tied to it and revolves in a circular path of radius 4m in vertical plane. What will be the maximum angular velocity of the stone?

Which of the following is not true, if   and    where P and Q are the magnitudes of P and Q?

The heat developed in a resistor R₁ connected to the terminals of a cell in a given time is the same as that developed in a resistor R₂ for the same time where R₂ replaces R₁. Now, the internal resistance of the cell is

Equation of a progressive wave is given by

The distance is expressed in cm and time in second. What will be the minimum distance between two particles having the phase difference of π/2?

A stationary wave  is produced in a rod fixed at both ends. The minimum  possible length of the rod is given by 

A person standing between two parallel hills fires a gun. He hears the first echo after 2 sec and second after 3 sec. If the speed of sound is 332 m/s, calculate the distance between the hills.

A 2 kg ball moving with a velocity50 m/s collides with a 8 kg ball moving with a velocity of 2 m/s in same direction. Find the loss of energy resulting from the impact.