school reform that works

Production of aromatic hydrocarbons (arenes) like benzene, toluene and xylenes. Earlier the bulk of arenes were obtained from coal tar, but now they are derived from petroleum by the process of reforming. Increasing the octane number of straight-run gasoline by increasing the proport..

The transference of energy may take place as work if the system and surroundings have different pressures. For e.g., suppose a gaseous system is enclosed in a cylinder fitted with a movable piston. If pressure of the system is higher, the piston will be pushed up until the pressure of th..

H 2 and O 2 are bubbled through a porous carbon rod into concentrated NaOH. Catalysts are present in the electrodes. ..

The various forms of biomass are mixed with an equal quantity of water in the mixing tank. This forms the slurry. The slurry is fed into the digester through the inlet chamber. When the digester is partially filled with the slurry, the introduction of slurry is stopped and the plant is left..

When the circuit is completed, a deflection is observed in the (G) towards the zinc electrode indicating that the e - are flowing from the Zn electrode to Cu electrode. Al the Zn electrode, oxidation takes place. The 'e' removed or lost or retained by the metal move through the material of the ..

Photocopier moves a document from the handler to the glass plate, where the pattern of the image is projected by lamps, mirrors and lenses onto a photoreceptor belt (or drum). The electrostatic charge on the belt fades in areas receiving light from the projected image. Magnetic rollers brush the b..

Let us suppose that the generator coil ABCD is initially in the horizontal position. As the coil rotates in the anticlockwise direction between the pole N and S of the magnet the side AB of the coil moves down cutting the magnetic lines of force near the N-pole of the magnet and side DC moves up, c..

The various forms of biomass are mixed with an equal quantity of water in the mixing tank. This forms the slurry. The slurry is fed into the digester through the inlet chamber. When the digester is partially filled with the slurry, the introduction of slurry is stopped and the plant is left..

The ray diagram given below gives the principle of a compound microscope. The object is mounted on the stand below the microscope tube. The objective lens forms a real, inverted and magnified image (I 1 ) of the object. The image I 1 acts as an object for the eye piece. The position of the eyepiece..

As the current in the primary varies, the flux linked with P 1 P 2 and hence S 1 S 2 , changes . If N p is the number of turns in P 1 P 2 , and E p is the alternating EMF fed to P 1 P 2 at instant t under ideal conditions; Self induced EMF in P 1 P 2 at instant t = EMF fed to P 1 P..