Tricks for solving polynomial equations

Impulse imparted on the ball

Question:

Answer:
The figure for the given question would be

exceptional oxidation states

For few compounds the oxidation states are not calculated in conventional method
Example I:

The oxidation state is incorrect
The correct oxidation state is

Example II:
 

The correct oxidation state is 

Example III:
 

Example IV:

Laws of motion (Important points)

Point-1:

Point-2:

Point-3:

Point-4:

Point-5:

Point-6:

redox part II

Tension on string

Question:

Answer:

Redox part 1

To calculate the work done

Question:

Solution:

anamalia

Salt hydrolysis

When a salt is hydrolyzed,the acid and base are formed as products. The type of product formed characterize the salt 

Lets consider hydrolysis of ammonium acetate the products formed are acetic acid and ammonium hydroxide. Both the products are weak thus ammonium acetate is termed as salt of weak acid and weak base.

The hydrolysis reaction may be represented as

As salt on hydrolysis had formed acid and base they can react with each other but as dissociation of both acid and based formed are different so the pH of the solution would not be neutral so for calculation pH following formula are used 

Lets try to understand the application of these formulas using a problem:

Rotational Motion (Some important aspects)

 Moment of Inertia

Moment of Inertia of the particle (I) =  

BODY	AXIS	MOMENT OF INERTIA
Circular ring with radius (R)	Through center and perpendicular to the plane of ring
Thin cylinder of radius R	Axis of cylinder
Thins circular disc of inner radius R1 and outer radius R2	Through center and perpendicular to the plane of disc
Hollow cylinder of inner radius R1 and outer radius R2	Axis of cylinder
Thin circular disc of radius R	Through center and perpendicular to the plane of disc
Solid cylinder of radius R	Axis of cylinder
Spherical shell	Diameter
Hollow cylinder of inner radius R1 and outer radius R2	Diameter
Solid Sphere	Diameter
Thin rod of length (l)	Through mid point and perpendicular to length
Rectangular sheet of length I and breadth b.	Through center perpendicular to the plane of
Circular solid cylinder of radius R and length 1	Through mid point perpendicular to the axis

Classification of Algae

Characters Chlorophyceae Phaeophyceae Rhodophyceae Habitat Aquatic, fresh Water, marine, moist terrestrial Marine but few fresh water Marine, but few fresh water Pigment Chlorophyll-a, Chlorophyll- b, beta carotene, xanthopyll Chlorophyll-a, Chlorophyll- c, carotenoids. Fucoxanthin r-phycoerythrin, phycocyanin Reserve food Starch Mannitol, Lipid and laminarin Floridean starch and fluoridoside Structure Unicellular, colonial, filamentous Multi-cellular Unicellular to multi-cellular filamentous Flagella Equal flagella Unequal flagella Absent Reproduction Asexual, vegetative by spores Sexual reproduction - isogatmy, anisogamy, oogamy Asexual reproduction by motile and non motile spores; Sexual reproduction isogamy, anisogamy. Oogamy Asexual reproduction by spores, sexual reproduction by specialized sex organs Examples Spirogyra, Chalmydomonas, Hydrodictyon Sargassum Batrachospermum Characters Bacillariophyceae Cyanophyceae Habitat Aquatic and moist terrestrial Freshwater Pigment Chlorophyll-a, Chlorophyll- c, carotenoids. fucoxanthin r-phycoerythrin,     c-phycocyanin Reserve food Oils and leucosin Cyanophycean starch Structure Unicellular Unicellular, colonial, filamentous Flagella Absent Absent Reproduction Asexual reproduction by binary fission Asexual by binary fission, fragmentation Examples Cyclotella Nostoc, Anabaena