FREE JEE NEET NOTES

2021-06-13 12:24:39 Important Questions from Irodov
JEE Syllabus Questions

Problems in General Physics by IE Irodov is undoubtedly an excellent book of physics numericals solving which requires a good amount of thinking and visualization skills along with crystal clear understanding of physics concepts. Many of its problems require you to be adept at applications of mathematical concepts like vectors, integration, differentiation, working in spherical, polar and cylindrical coordinate systems.

Many questions from Irodov are not in current JEE syllabus. Solve only those portions of Irodov which are under current JEE Advanced syllabus and leave the rest parts/problems which are not concerned with JEE.

Part 1 :  Physical Fundamentals of Mechanics

 1 to 54,  58 to 108,  110,  118 to 131,  133 to 206,  209 to 266,  269 to 279, 290 to 299,  309 to 311,  315 to 324,  326 to 332.

Part 2 : Thermodynamics and Molecular Physics 

1 to 20,  26 to 61,  43 to 56,  62 to 79,  116 to 127,  149,  160 to 181,  247 to 251,  254 to 257. 

Part 3 : Electrodynamics 

1,  2,  4 to 15,  19 to 42,  46 to 53,  101 to 108,  110,  112 to 142,  144 to 152,  160,  163,  169 to 209,  219 to 230,  232 to 237,  242 to 255,  257 to 266,  269 to 271,  288 to 307,  311 to 318,  323,  324,  326 to 331,  334,  335,  372 to 374,  378,  382 to 392.

Part 4 : Oscillations and Waves 

1 to 65,  95 to 100,  121 to 125,  134 to 147,  150,  153 to 156,  158,  160 to 180,  183,  185 to 187.

Part 5 : Optics 

13 to 34,  26 to 28,  31,  34 to 37,  40 to 42,  69 to 77,  247,  249,  251,  260 to 268,  270,  273 to 281.

Part 6 : Atomic and Nuclear Physics 

21 to 28,  30 to 43,  46 to 53,  133 to 142,  214 to 232,  249 to 280,  289. Open / Comment

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2021-06-13 08:45:37 Neuropathic gait

Neuropathic gait (a.k.a. high-steppage gait) is caused by weakness of the muscles in the distal limb (typically the dorsiflexors of the foot) as a result of damage to the peripheral nerves providing motor innervation.

Weakness of the dorsiflexors of the foot results in foot drop and dragging of the toes during the swing phase of the gait cycle. To prevent the toes from dragging on the floor, the knee and hip flex excessively, thereby creating a “high stepping” gait.

Associated clinical features

Clinical features which may be associated with a neuropathic gait include:
Peripheral vascular disease
Peripheral sensory impairment
Distal muscle weakness
Reduced or absent reflexes

Causes
Foot drop is caused by weakness of the muscles of ankle dorsiflexion (tibialis anterior) supplied by the common peroneal nerve (L4, L5 and S1 nerve root).

Foot drop may therefore be caused by:
Isolated common peroneal nerve palsy (e.g. secondary to trauma or compression)
L5 radiculopathy (e.g. disc prolapse)
Generalized polyneuropathy involving multiple nerves (e.g. diabetic neuropathy, motor neurone disease, Charcot-Marie Tooth disease) Open / Comment

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2021-06-12 12:34:06 CHEMISTRY HANDWRITTEN NOTES

1. Mole concept

2. Atomic Structure

3. Periodic Table

4. Chemical Bonding

5. Gaseous states

6. Thermodynamics and thermochemistry

7. Chemical Equilibrium

8. Ionic Equilibrium

9. S block elements

10. Boron and carbon family Open / Comment

2021-06-11 12:38:49 IMPORTANT YEARS FOR NEET 2021
NEET TIPS AND TRICKS

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 Sache

s.
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

• Tschemark
1902 - Chromosomal theory of inheritance given by Sutton & Bovery.
1905 - Law of limiting factors for plants given by Blackmann
1920 - After Industrialisation => more black moth
1928 - Frederick Griffith's Transformation experiment on Streptococcus pneumonia bacteria
1933 – 1944 - Avery, Macleod McCarty used transformation principle of Griffith's experiment & concluded that DNA is genetic material.
1938 - Coelacanth/Lobe Fines caught in South Africa -> Ancestor of amphibia.
1947 - At the time of our independence India's population, was approximately

350 million .
1950s - Electron microscope invention

- Tissue culture started
1951 - Family planning was initiated
1952 - Hershey & Chase experiment more correctly proved that DNA ie genetic material [ #unquivocal\proof ]
1953 - Discovery of ribosome by George Palade.
- S.L Miller Experiment of evolution.
- Double helical structure model of DNA given by Watson & Crick.

1958 - Matthew Meselson of Franklin Stahl experiment (E. coli in NH4CI medium) proved that DNA replication is semiconservative )
- Taylor study on vicia faba plant (used radioactive thymidind and proved semiconservative nature of DNA)
1960s - Green Revolution.
1963 - Restriction endonuclease isolated from E. coli.



1963 - Wheat varieties Sonalika f Kalyan Sona (High yield & Disease resistant ) introduced in INDIA.
1966 - Derived semi dwarf varieties of rice introduced in India.
1969 - R.H. Whittaker proposed FIVE-KINGDOM Classification

1971 - Discovery of viroids by T.O. Diener
- Govt. of India legalised MTP.

1972 - Fluid Mosaic model of plasma membrane by Singer & Nicolson
- 1st recombinant DNA developed by Stanley Cohen and Herbert Boyer
- National committee for environmental planning and Coordination was established.
- Wild life protection act in India.

1974 - Water Act. & also Chipko movement
1980s - Joint Forest movement
1981 - Air act.
- AIDS was fired reported
- Intrinsic growth rate of India (r= 0.0205)
1983 - Eli Lilly American company human Insulin from E. coli.

1984 - Bhopal Tragedy

- Ministry of Environment amd Forest.
1986 - Environment Act (NEPA)
1987 - Noise included in air pollution

- Montreal protocol (Canada)
1988 - National Forest Policy
1989 - Montreal Protocol became effective.
1990s - Delhi ranked 4th among 41 most polluted cities.

1990 - First clinical gene therapy was given to 14 yr old girl with ADA deficiency eye.
- Human Genome Project (HGP) launched Open / Comment

2021-06-09 18:33:44 Open / Comment

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2021-06-09 16:13:36 Quiz: Brain Function

1. Ascending tracts carry ______ impulses to the brain.
sensory
motor
threshold
reflex

2. The part of the brain that controls higher mental activities, such as reasoning is the:
cerebellum
medulla oblongata
temporal lobe
frontal lobe

3. What connects the two hemispheres of the brain?
pia mater
corpus callosum
diencephalon
pons


4. The pons, midbrain, and medulla oblongata all make up the:
white matter
corpus callosum
brain stem
cerebrum

5. The part of the brain that controls emotional experiences:
limbic system
medulla oblongata
hypothalamus
pia mater

6. The web-like membrane between the outer and inner meninges is called the:
dura mater
gray matter
arachnoid mater
ventricle

7. Fluid filled cavities within the brain are called:
maters
ventricles
meninges
cavities

8. The lobe at the back of the head that controls vision and visual processing is the ___ lobe.
parietal
temporal
frontal
occipital

9. The part of the brain that controls coordination and balance is the:
cerebellum
pons
hypothalamus
temporal lobe

10. Damage to the hippocampus may result in:
loss of balance
inability to regulate body temperature
loss of memory
inability to speak or use language

Answer:
1. sensory
2. frontal lobe
3. corpus callosum
4. brain stem
5. limbic system
6. arachnoid mater
7. ventricles
8. occipital
9. cerebellum
10. loss of memory Open / Comment

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