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Pasteurization (e.g., 72°C for 15s) kills pathogens (e.g., Salmonella, Listeria) while preserving sensory qualities. Blanching targets enzymes, not microbes.
Which law states that "the rate of heat loss of a body is directly proportional to the temperature difference between the body and its surroundings"?
A sphere of radius 1m encloses a charge of 10μC. Another charge of −5μC is placed inside the sphere. The net electric flux would be :
A transformer has 1000 turns in the primary and 100 in the secondary coil. If input voltage is 220 V, output voltage is:
Planck’s constant has dimensions equivalent to which of the following?
A convex mirror and a concave mirror face each other at a distance of 30 cm. A point object is placed midway. The final image formed by double reflectio...
In a spring-block system executing SHM, at displacement x= A/2, the ratio of kinetic to potential energy is:
Ultra violet radiations of the Sun do not reach the earth because, earth's atmosphere is surrounded by –
An electric dipole of length 10 cm, when placed with its axis making an angle of 30° with a uniform electric field, experiences a torque of 2√...
A body is thrown vertically upward with a velocity of 20 m/s. What will be its velocity at the highest point?
What is the wavelength of visible spectrum?
