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Question: An organic compound (A) with molecular formula C8H8O forms an orange-red precipitate with 2,4-DNP reagent and gives yellow precipitate on heating with iodine in the presence of sodium hydroxide. It neither reduces Tollen's or Fehling's reagent nor does it decolourise bromine water or Baeyer's reagent. On drastic oxidation with chromic acid, it gives a carboxylic acid (B) having molecular formula C7H6O2.Identify the compounds (A) and (B) and explain the reactions involved.
A parallel-plate air-filled capacitor having area 35 cm2 and plate spacing 1.2 mm is charged to a potential difference of 740 V.
An undersea research chamber is spherical with an external diameter of 5.20 meter the mass of the chamber when occupied is 74,400 kilogram it is anchored to sea bottom by a cable: Find the buoyant force on the chamber
A vertical straight wire carrying an upward 40-A current exerts an attractive force per unit length of 8.8*10-4 N/m on a second parallel wire 5.0cm away. What current (direction and magnitude) flows in the second wire?
a 100.-g block hangs from a spring with k 5.00 nm. at t 0 s the block is 20.0 cm below the equilibrium position and
In one contest at the county fair, a spring loaded plunger launches a ball at a speed of 3.0 m/s from one corner of a smooth, Find at what angle θ should you tilt the ball launcher
A 70.5-kilogram child starts from rest from the top of a frictionless slide that is 5.6 meters tall. The bottom of the slide is 25.0 centimetres above the ground. What is the child's speed at the bottom of the slide?
The bow of a destroyer undergoessimple harmonic vertical pitching motion with a period of 12.0 sand an amplitude of 2.5 m, What is the magnitude of the maximum acceleration
A machine that makes transformers can only wind the coils with a single specific number density. what is length of the output coil
An 1100 N crate is being pulled across a level floor by a force F of 315 Newton at an angle of 24 degree above the horizontal. Evaluate the magnitude of the acceleration of the crate
How does the study of heat relate to the kinetic theory of matter?
The lowest point in Death Valley is 85 m below sea level. What is the change in potential energy of an energetic 91.2kg hiker who makes it from the floor of Death Valley to the top of Mt. Whitney
A 0.75 kg ball attached to the end of a horizontal cord, is rotated in a circle of radius 1.9 m on a frictionless horizontal surface, What is the max speed the ball can have
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