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A cup of water at 5°C (system) is placed in a microwave oven and the oven is turned on for one minute during which the water begins to boil. Which of the following option is true?

A cup of water at 5°C is placed in a microwave oven and begins to boil Q. A cup of […]

‘x’ is the product which is obtained from propanenitrile and stannous chloride in the presence of hydrochloric acid followed by hydrolysis. ‘y’ is the product which is obtained from the but-2-ene by the ozonolysis followed by hydrolysis. From the following, which product is not obtained when one mole of ‘x’ and one mole of ‘y’ react with each other in the presence of alkali followed by heating?

x is the product obtained from propanenitrile and stannous chloride followed by hydrolysis Q. ‘x’ is the product which is

Match List – I with List – II. List – I (Functional group detection) A. Unsaturation (Baeyer’s test) B. Alcoholic group (Ceric ammonium nitrate test) C. Aldehyde group (Tollen’s reagent) D. Phenolic group (FeCl3 test) List – II (Change observed during detection) I. Red colour appears II. Silver mirror appears III. Violet colour appears IV. Discharge of pink colour

Match List I with List II Functional group detection tests Q. Match List – I with List – II. List

In the given electrochemical cell, Ag(s)|AgCl(s)|FeCl2(aq), FeCl3(aq) | Pt at 298 K, the cell potential (Ecell) will increase when : A. Concentration of Fe2+ is increased. B. Concentration of Fe3+ is decreased. C. Concentration of Fe2+ is decreased. D. Concentration of Fe3+ is increased. E. Concentration of Cl− is increased. Choose the correct answer from the options given below :

In the given electrochemical cell Ag(s)|AgCl(s)|FeCl2(aq), FeCl3(aq) | Pt at 298 K the cell potential will increase when Q. In

Consider the general reaction given below at 400 K x A(g) ⇌ y B(g). The values of Kp and Kc are studied under the same condition of temperature but variation in x and y. (i) Kp = 85.87 and Kc = 2.586 appropriate units (ii) Kp = 0.862 and Kc = 28.62 appropriate units The values of x and y in (i) and (ii) respectively are:

Consider the general reaction given below at 400 K x A(g) ⇌ y B(g) Q. Consider the general reaction given

In two separate Young’s double-slit experimental set-ups and two monochromatic light sources of different wavelengths are used to get fringes of equal width. The ratios of the slits separations and that of the wavelengths of light used are 2 : 1 and 1 : 2 respectively. The corresponding ratio of the distances between the slits and the respective screens (D1 / D2) is ____.

In two separate Young’s double-slit experimental set-ups and two monochromatic light sources of different wavelengths are used to get fringes

The equation of the electric field of an electromagnetic wave propagating through free space is given by : E = √377 sin (6.27 × 10^3 t − 2.09 × 10^−5 x) N/C The average power of the electromagnetic wave is (1/α) W/m². The value of α is (Take √(μ₀/ε₀) = 377 in SI units)

The equation of the electric field of an electromagnetic wave propagating through free space is given by E = √377

A simple pendulum made of mass 10 g and a metallic wire of length 10 cm is suspended vertically in a uniform magnetic field of 2 T. The magnetic field direction is perpendicular to the plane of oscillations of the pendulum. If the pendulum is released from an angle of 60° with vertical, then maximum induced EMF between the point of suspension and point of oscillation is _____ mV. (Take g = 10 m/s²)

A simple pendulum made of mass 10 g and a metallic wire of length 10 cm is suspended vertically in

Four persons measure the length of a rod as 20.00 cm, 19.75 cm, 17.01 cm and 18.25 cm. The relative error in the measurement of average length of the rod is :

Four persons measure the length of a rod as 20.00 cm, 19.75 cm, 17.01 cm and 18.25 cm Q. Four

Consider light travelling from a medium A to medium B separated by a plane interface. If the light undergoes total internal reflection during its travel from medium A to B and the speed of light in media A and B are 2.4 × 10^8 m/s and 2.7 × 10^8 m/s respectively, then the value of critical angle is :

Consider light travelling from a medium A to medium B separated by a plane interface Q. Consider light travelling from

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