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16/04/2023

Quick review about the periodic table:-
1. Smallest atom is flourine.
2. Largets atom is cesium.
3. Densest atom is osmium.
4. Most thermally stable atom is tungeston.
5. Least electronegative halogen is iodine.
6. Most electronegative atom is flourine.
7. Most metallic atom is cesium.
8. Gold, silver, platinum are called Nobel metals.
9. The pitch blend contains uranium, thorium, radium and polonium.
10. Radioactive inert gas is Radon.

26/11/2022

26/11/2022

One liners..

26/10/2022

Quick review
How to write word root which contain more than 10 carbon in it.
1= m**h
2= eth ...
8=oct
9= non
10= dec
11= 1+10= un+dec
12= 2+10= do+ dec
13= 3+10= tri+dec...
19 =9+10= non+dec
20=10+10= i+ cos (cos is written for 20 like dec is written for 10)
21=1+20= un+cos/heni+ cos
22=2+20= do+cos
23=3+20= tri+cos....

I hope this help you
PST wishes you best of luck..

18/09/2022

Quick review to nomenclature scheme for organic compounds.
Scheme is..

(Prefix/ word root/ primary suffix/ secondary suffix )..

Prefix can be
1. Halogen
2. Any alkyl group which is not included in longest carbon chain.
3. Cyanide group
4. Less important functional group (if there are more than one)
5. Nitro group.

Word root is number of carbons in longest carbon chain.

Primary suffix is the type of bonds:-
Single bond writes ANE
Double bond writes ENE
Triple bond writes YNE.

Secondary suffix is name of functional group.
Eg. Ch3cClch2
Name:- 2 chloro prop-1- ene

Try your self.
CH3CHFCHClCH2COOH

14/03/2022

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02/03/2022

Quick review for glands in the human body.
1. There are two types of glands; endocrine and exocrine glands.
2. Glands without openings( ducts) pour secretion directly in the blood. Are called endocrine glands.
3. Glands which have openings(ducts) pour the secretion directly int he target organ are called exocrine glands.
4. Salivary glands, tear glands, gastric glands, liver, intestinal glands, mucous glands, and sweat glands are exocrine glands.
5. Thyroid gland, te**is, ovaries, pituitary gland, hypothalamus, thymus gland, are endocrine glands.
7. Those secretions which are called hormones are released from endocrine glands e.g. thyroid hormone, estrogen , growth hormone, FSH etc.
8. Secretions which are called juices or which are not written with any suffix are released from exocrine glands e.g. gastric juice, bile juice, saliva, sweat, tears etc.
9. Pancrease secrete insulin hormone as well as pancreatic juice therefore it is called as mixocrine gland.
10. Pituitary gland is known as master gland and hypothalamus is called as master of master gland.

14/02/2022

Quick review for blood vessels.
1. Major blood vessels are of two types; arteries and veins. Whereas arteries divide themselves into thin capilaries which open in veins.
2. Vessels arising from heart are arteries whereas veins open in the heart.
3. Arteries contain pure blood except pulmonary artery.
4. Veins contain impure blood except pulmonary vein.
5. Arteries are present in deep tissues of body whereas veins are present on the surface of body.
6. Arteries are thick vessels and posses high blood pressure as compared to veins.
7. Aorta is the largest artery of body.
8. Vena Cava is the largest vein of body.
9. Capillary are the small arteries supplying blood to tissues of body and open in the veins superficially.
10. Human blood circulatory system is closed type.

12/02/2022

Cell
1. Cell is know as fundamental unit of life.
2. First cell was discovered by Robert Hooke from bark of the plant which is called cork cell.
3. First cell discovered was a dead cell.
4. bacteria posses prokaryotic cell which is know to be the first ever developed cell on the crust of earth.
5. Plants, animals, and fungus contain eukaryotic type of cell.
6. Nucleus of cell is called Brian of cell.
7. Lysosome present in the cell is also called suicidal bag/ digestive bag/ atom bomb of cell
8. Ribosomes are called protein factory of cell
9. Mitochondria is also called powerhouse/ respiratory site of cell.
10. Nucleus contains all the hereditary material of cell .

08/02/2022

Heart quick revision.
1. Heart is a pumping machine.
2. Heart is semi-autonomous organ i.e it can work without command of Brian.
3. Fishes have 2 chambered heart.
4. Reptiles and amphibians have 3 chambered heart except crocodile.
5. Teristrial organisms and aerial organisms have 4 chambered heart.
6. Left chambers of heart are thicker than right chambers because pressure is need to be maintained to supply blood from heart to all parts of body.
7. Blood enters two times into heart in one circulation therefore, blood circulation in humans is called double circulation.
8. Thre are four valves in the heart , two of which lies inside the heart and two lies outside the heart.
9. Heart beat is made in 0.8seconds.
10. Left chambers contain pure blood whereas right chambers contain impure blood.

08/02/2022

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