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2021-05-12 18:47:37 FUNCTION OF LARGE INTESTINE

TRICK: DEWS

1)D- defecation.

2)E- excretion of bivalent ions
like sulphate,
carbonate, phosphate
(NOTE- kidneys can't
excrete bivalent ions ).

3)W- water and drug absorption

4)S - synthesis of Vit-k & vit-
B12 by the microbes of
large intestine

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2021-05-12 18:16:43 Chemistry Mnemonics

ACTIVITY SERIES OF METALS

Potassium>Sodium>Calcium>Magnesium>Aluminium>(Carbon)>Zinc>Iron>Tin>Lead>(Hydrogen)>Copper>Mercury>Silver>Gold>Platinum

Mnemonics

Please Stop Calling Me A Cute Zebra I Like Her Call Smart Goat

Please Stop Calling Me A Carless Zebra Instead Try Learning How Copper Miners Save Gold Pit

Note that Carbon and Hydrogen are non-metals, used as a baseline.

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2021-05-12 18:00:03 BORON:
•In casting of copper as a dioxidizer
•Boron rods used in automic reactor.
•Boron fiber used in bullet proof jacket,
•In composite material of aircraft
•Used in braintumer therapy.

BORAX:
•As a flux for soldring metal.
•In borex bead test
•In softning of water
•Antiseptic
•Manufacturing of enamels of glazes, tiles.
•For making optical and borosilicals SS.
•Food preservative

ALUMINIUM:
• Making house hold, untensils, frames, roof,aircrafts.
• Electric wire.
•Thermite process (In metallurgy of Cr, Mn, Fe)
•For transportin nitric acid.
•AI, Hg used as reducing agent.
•Aluminium powder + Ammonium nitrate.

LEAD [Pb]:
•In making telegraph and telephone wires
•Making bullets
•Making chamber in HSO, process.

NITROGEN:
•In the manufacturing of HNO3, NH3, CaCN2.
•Liquid nitrogen used as refrigrant.
•Inert atmosphere in metallurgy.
•Gas thermometer and electrical bulb

NH3:
• Refrigeration
•Manufacturing HNO3, NaHCO3
•Artificial Silk.
• Urea Formation
•For solvent

HNO3:
• Manufacturing of ammonium nitrateas fertilizer.
•In explosive
• For making nitroglycerine.
• Making TNT.
• Pickling against of stainless steel.
• Etching of Metal
•Oxidizer in rocket fule.


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2021-05-12 17:56:48 Toppr Scholarship test

https://bit.ly/3hphZz4

Its not a promotion just for information ओपन / कमेंट

2021-05-12 17:00:05 Points to remember

Extra edge of ncert

1. Triple helical model of collagen was given by G.N. Ramachandran

2. Ramachandran was influenced by Linus Pauling

3. Darwin was influenced by Malthus

4. P. Maheshwari was influenced by Dr. W. Dudegon

5. a- helix & b- sheet structures was published by Linus Pauling



1. Anton von Leeuwenhoek first saw & described a live cell.

2. Cell theory was given by Schleiden & Schwann.

3. Cell theory was modified by Rodolf Virchow (1855)

4. Fluid mosaic model was given by Singer & Nicholson(1972)

5. G.B. discovered by Camillo Golgi (1898)

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2021-05-12 16:05:10 1:Anti Histamine = Use in Allergy
2:Analgesic = Pain Killer
3:Anti Pyretic = Fever
4:Anti Septic = Pus
5:Anti Biotic = Infection
6:Anti Anaemia = Low blood
7: Anti Emetic = Vomting
8:Anti Acid = Stomach Burn
9:Anti Flantulents = Gases
10:Anti Spasmodic = Abdominal pain
11:Anti Anginal = Cardiac pain
12:Anti Arhthnic = Cardiac Activity
13:Ant Hypertensive = BP
14:Anti Lipemic = Chlosterol+Lipids
15:Anti Coagulant = Norrowing of Blood
16:Anti Depressant = Depression
17:HYPONOTIC = For Sleep
18:Anti Psychotic = For Psychosis
19:Anti Anxiety = For Anxiety
20:Anti Parkinson = For Parkinson's
21:Anti Stroke = For Stroke
22:Anti Viral = Against Virus
23:Anti T.B = Against T.B
24:Anti Fungal = Against Fungus
25:Anti Bacterials = Against Bacteria
26:Anti Malaria = Against Malaria
27:Anti Inflamatory = Against Swelling.
28: Bronchodilators = For Respiration
29:Haemostatics = Collecting of Blood

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P-BLOCK ELEMENT:

This block contains non-metal, semi-metal and poor metals. P-BLOCK element the last six group of the periodic table(group 13 to 18) have their own valence electron.

GROUP 13 is known as Boron group and it consist of Boron(B),Aluminium(Al),Gallium (Ga),Indium(In),and Thallium(Ti).

MNEMONIC for this group:
B A G I T

Group 14 consist of Carbon(C),Silicon(Si),Germanium (Ge),Tin(Sn),and lead(Pb)and known as carbon group

MNEMONIC for this group:

Chemistry Sir Gives Sanki Problems

Group 15 includes Nitrogen(N),Phosphorus(P),Arsenic(As),Antimony(Sb),and Bismuth(Bi) and known as nitrogen group.

MNEMONIC for this group:

Nahi Pasand Aise Sab Bhai

GROUP 16 contains Oxygen(O) sulphur (S), Selenium(S), Tellurium(Te), and Polonium(Po) and are these are known as oxygen group.

MNEMONIC for this group:

Oh! Style Se Tel Polish

Group 17 Fluorine (F), Chlorine(Cl),Bromine(Br),Iodine(I),and Astatine(At) and these groups are known as Halogens.

MNEMONIC for this group:
Fir Call Kar Bahaar AayI Aunty

Group 18 consist of Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), and Radon (Rn) and known group of noble gasses except Helium.

MNEMONIC for this Group:

He Never Arrived; Kara Xero Run pe Out

Funny mnemonics which will help you learn periodic table easily

S-BLOCK ELEMENT:
S-BLOCK element has similar physical and chemical properties.

Group 1 include lithium(li),Sodium(Na),Potassium(K),Rubidium(Ru),Caseium(Cs),and Francium(Fr)hence known as alkali metal.

MNEMONIC FOR THIS GROUP:

LiNa ki Ruby Cse Friendship hai.


Group 2 includes Beryllium(Be),Magnesium(Mg),Calcium(Ca),Strontium(Sr),Barium(Br),and Radium(Ra).hence known as alkali earth metal.

MNEMONIC for this group:

Beta Mange Car Scooter Baap rone se Razi

IMPORTANT YEARS IN NCERT :-

1731 - Many people of Bishnoi community sacrifice their lives saving trees (Jodhpur)
1770 - Priestley's experiment by Bell Jar, Mice & Mint plant, Candle.
1774 - Discovery of oxygen by Joseph Priestley
1838 - Matthias Schleiden-Cell Theory
1829 - Theodore Schwann- Cell Theory
1850s - Before industrialization => more white wing Moth
1854 - Julius von Sachs proved that glucose is formed in photosynthesis & stored as starch.
1855 - "Omnis cellula cellula" by Rudolf Virchow & complete the cell theory.
1856 - 1863 Mendel work on garden pea.
1860 - Hydroponics technique developed by Julie Von Saches.
1865 - Mendel publishes his work

on inheritance of character
1866 - Down's Syndrome discovered by Langdon Down.
1869 - DNA as a acidic substance was 1st identified by Friedrich Meischer & termed a "Nuclein"

1891 - Fossils of Java man discovered in Java
- Henking discovered X-body (X-chromosome) in insect. (XO- type sex determination)
1892 - Discovery of TMV by D.J. Ivanowsky
1898 - M.W. Beijerinck demonstrated infectious nature of TMV
- Discovery of Golgi Body by Camillo Golgi.
1900 - Rediscovery of Mendel's work by -> • Hugo de Vries

• Karl Corrence

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2021-05-12 16:02:59 Menomics or short tricks to learn ANIMAL KINGDOM PHYLUM MOLLUSCA: Examples: Pinctada, Sepia, Octopus, Dentalium, Aplysia, Chaetopleura, Pila, Loligo. MNEMONIC: Phir se Octopus dekhenge, aap pehle chai pe lo. Phir – Pinctada Se – Sepia Octopus Dekhenge… ओपन / कमेंट

2021-05-12 16:00:03 Menomics or short tricks to learn ANIMAL KINGDOM



PHYLUM MOLLUSCA:
Examples: Pinctada, Sepia, Octopus, Dentalium, Aplysia, Chaetopleura, Pila, Loligo.

MNEMONIC: Phir se Octopus dekhenge, aap pehle chai pe lo.
Phir – Pinctada
Se – Sepia
Octopus
Dekhenge – Dentalium
Aap – Aplysia
Chai – Chaetopleura
Pe – Pila
Lo – Loligo

PHYLUM ECHINODERMATA:

Examples: Ophinuria, Antedon, Asterias, Echinus, Cucumaria.

MNEMONIC: office mein aunty asked for ek cucumber.
Office – Ophinuria
Aunty – Antedon
Asked – Asterias
Ek – Echinus
Cucumber – Cucumaria.

PHYLUM ASCHELMINTHES/ NEMATODA:

Examples: Ancylostoma, Wuchereria, Ascaris, Rhabditis.

MNEMONIC: Annie Bechaari AksarReh jati hai
Annie – Ancylostoma
Bechaari – Wuchereria
Aksar – Ascaris
Reh – Rhabditis.

PHYLUM ANNELIDA:

Examples: Hirudinaria, Pheretima, Nereis.

MNEMONIC: HERO PHERE KE TIME NAHITHA.
Hero – Hirudinaria
Phere ke time – Pheretima
Nahi – Nereis.

PHYLUM ARTHROPODA:

Examples: Locusta, Limulus, Bombax, Apies, Scorpion, Butterfly, Palaemon, Laccifer, Anopheles, Culex, Aedes.

MNEMONIC: LOLITA BOMBAY AAKAR STORE SE BUTTER PEHLE MAT LENA.

LoLita – Locusta & Limulus
Bombay – Bombax
Aakar – Apies
Store – Scorpion
Butter – Butterfly
Pehle – Palaemon
Mat – Mosquitoes (Anopheles, Culex, Aedes)
Lena – Laccifer


STAY TUNED FOR SUCH Points to remember


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2021-05-12 15:50:18 Notes on Anatomy of Flowering Plants

Depending upon distribution of stomata, the leaves are :
(a) Apple-mulberry type: e.g. Oxalis, Mulberry, Apple.
(b) Potato type: e.g. Bifacial (dorsiventral leaves of pea, bean, tomato).
(c) Oat type: e.g. Suberect (isobillateral) leaves of most grasses and cereals (monocotyledens).
(d) Nymphea type: e.g. Floating leaves of Nelumbo, Nymphia, water lily.
(e) Potamogeton type: e.g. Submerged plants like Hydrilla, Vallisneria, Potamogeton.


(iv) Trichomes: These are epidermal outgrowths present temporarily or permanently on almost all plant parts.

(v) Root hairs: They are enlargements of special epiblema cells called trichoblasts and occurs in a particular zone of young root called root hair zone.

(2) Ground or Fundamental tissue system: Ground tissue system includes all the tissues of plant body except epidermal tissue system and vascular tissues. It forms the bulk of body. This tissue system mainly originates from ground meristem. The ground tissues constitute the following parts :

(i) Cortex: It lies between epidermis and the pericycle. The cortex is distinct in dicotyledons but not in monocotyledons where there is no clear demarcation between cortex and pith. It is further differentiated into :

(a) Hypodermis: It is collenchymatous in dicot stem and sclerenchymatous in monocot stem. It provides strength.

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(b) General cortex: It consists of parenchymatous cells. Its main function is storage of food.

(c) Endodermis (Starch sheath): It is mostly single layered and is made up of parenchymatous barrel shaped compactly arranged cells.

(ii) Pericycle: It is a single layered or multilayered cylinder of thin-walled or thick-walled cells present between the endodermis and vascular tissues. In some cases, the pericycle is made up of many layers of sclerenchymatous cells (Cucurbita stem) or in the form of alternating bands of thin-walled and thick-walled cells (Sunflower stem).

(iii) Pith or Medulla: It occupies the central part in dicot stem, and monocot root. It is mostly made up of parenchymatous cells. in dicot root pith is completely obliterated by the metaxylem elements. In dicot stem the pith cells between the vascular bundles become radially elongated and known as primary medullary rays or pith rays.

(3) Vascular tissue system: The central cylinder of the shoot or root surrounded by cortex is called stele. The varying number of vascular bundles formed inside the stele constitute vascular tissue system. Xylem, phloem and cambium are the major parts of the vascular bundle. Vascular bundle may be of following types:

(i) Radial: The xylem and phloem strands alternate with each other separated by parenchymatous cells. such kinds of vascular bundles are called radial and found mainly in roots.

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(ii) Conjoint: A vascular bundle having both xylem and phloem together, is called conjoint. Normally the xylem and phloem occur in the same radius. They occur in stems. Such vascular bundles are of two types:

(a) Collateral: A vascular bundle in which the phloem lies towards outerside and xylem towards inner side, is called collateral, e.g., Sunflower.

(b) Bicollateral: A vascular bundle having the phloem strands on both outer and inner side of xylem, is called bicollateral. e.g., Cucurbita.


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2021-05-12 15:46:20 Revision Notes on Reproduction in Organisms Fertilization: (a) The process of fusion of male and female gamete is called fertilization or syngamy. (b) The female gamete undergoes development to form new organism without fertilization. This phenomenon is… ओपन / कमेंट