β‘οΈTRICKS FOR AMINO ACIDβ‘οΈ
1.Basic
Trick:- Loves his art
lysins
histidine
arginine
2. Acidic
Trick:- As Glue
Aspartic acid
Glutamic acid
3. Polar
Trick:- Sera throw her cyster(sister) to get Aspirin.
Serine
Thrionine
Cystein
Glycine
Asparginine
4. Aromatic
Trick:- PhaTy Tyre
Phenylalanine
Tryptophan
Tyrosine
5. Non polar
Tricks:- Professor Leucy IS Already at Valley Ground to Meet him.
Proline
Leucine
Isoleucine
Alanine
Valine
Glycine
Methionine
»»---------------β-------------------βΊ
1.Basic
Trick:- Loves his art
lysins
histidine
arginine
2. Acidic
Trick:- As Glue
Aspartic acid
Glutamic acid
3. Polar
Trick:- Sera throw her cyster(sister) to get Aspirin.
Serine
Thrionine
Cystein
Glycine
Asparginine
4. Aromatic
Trick:- PhaTy Tyre
Phenylalanine
Tryptophan
Tyrosine
5. Non polar
Tricks:- Professor Leucy IS Already at Valley Ground to Meet him.
Proline
Leucine
Isoleucine
Alanine
Valine
Glycine
Methionine
»»---------------β-------------------βΊ
π11β€1
βοΈImportant SCIENCE (CHEMISTRY )
β . Gases used in welding are ?
β Acetylene & Oxygen
β Gases used by sea divers for breathing are ?
β Oxygen & Helium
β . Best sources for Vitamin D are?
β Sunlight & Fish liver
β Zinc Phosphide is used as?
β Rat Poison
β . Fuse wire is made up of
β Lead and Tin
β Purest form of Iron is?
β Wrought Iron
β Radium is extracted from .
β Pitchblende
β Which agent is as βseedβ in artificial rain?
β Silver Iodide
β . Oxides of metals are .
β Alkaline
β During the process of βrustingβ , the weight of iron .
βIncreases
β (metal) is liquid at room temperature.
β Mercury
β What is the formula of common salt
β NaCl
β . What is the maximum number of electrons that a p-orbital can hold
β 6
β . What is used in fire extinguisher
β Sodium bicarbonate
β What is the nature of metal oxides
β Basic
β . Which gas burns with popping sound
β Hydrogen
β Which metal is used for galvanization
β Zinc
β . What is the nature of bleaching powder
β Oxidising agent
β Which is stored in Kerosene
β Sodium
β Phenolphthalein gives which color in acidic medium
β Colorless
β Which gas is used in cigarette lighters?
β Butane
β . Biogas chiefly contains .
β Methane
β . Chemical used as fixer in Photography is .
β Sodium thiosulphate
β Aspirin is
β Acetyl Salicylic Acid
β is also known as βStranger Gas.β
β Xenon
β Natural rubber is a polymer derived from .
β Isoprene
β . Gases used in welding are ?
β Acetylene & Oxygen
β Gases used by sea divers for breathing are ?
β Oxygen & Helium
β . Best sources for Vitamin D are?
β Sunlight & Fish liver
β Zinc Phosphide is used as?
β Rat Poison
β . Fuse wire is made up of
β Lead and Tin
β Purest form of Iron is?
β Wrought Iron
β Radium is extracted from .
β Pitchblende
β Which agent is as βseedβ in artificial rain?
β Silver Iodide
β . Oxides of metals are .
β Alkaline
β During the process of βrustingβ , the weight of iron .
βIncreases
β (metal) is liquid at room temperature.
β Mercury
β What is the formula of common salt
β NaCl
β . What is the maximum number of electrons that a p-orbital can hold
β 6
β . What is used in fire extinguisher
β Sodium bicarbonate
β What is the nature of metal oxides
β Basic
β . Which gas burns with popping sound
β Hydrogen
β Which metal is used for galvanization
β Zinc
β . What is the nature of bleaching powder
β Oxidising agent
β Which is stored in Kerosene
β Sodium
β Phenolphthalein gives which color in acidic medium
β Colorless
β Which gas is used in cigarette lighters?
β Butane
β . Biogas chiefly contains .
β Methane
β . Chemical used as fixer in Photography is .
β Sodium thiosulphate
β Aspirin is
β Acetyl Salicylic Acid
β is also known as βStranger Gas.β
β Xenon
β Natural rubber is a polymer derived from .
β Isoprene
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Comparison Between Sigma And Pi Bond :
Sigma Bond π
1. Formed by axial overlapping
2. Involves s-s, s-p, p-p (axial) & hybrid orbitals
3. Extent of overlapping is more so stronger
4. Free rotation around s bond is possible
5. Hybridized or unhybridized orbital forms s bond
6. Independent existence of s-bond.
Pi Bond π
1. Formed by side by side overlapping
2. Involve p-p, p-d & d-d orbital
3. Extent of overlapping is less so weaker
4. Free rotation around p bond is not possible
5. Hybridized orbital never forms pi bond
6. No independent existence.
Must Read βοΈβ
Sigma Bond π
1. Formed by axial overlapping
2. Involves s-s, s-p, p-p (axial) & hybrid orbitals
3. Extent of overlapping is more so stronger
4. Free rotation around s bond is possible
5. Hybridized or unhybridized orbital forms s bond
6. Independent existence of s-bond.
Pi Bond π
1. Formed by side by side overlapping
2. Involve p-p, p-d & d-d orbital
3. Extent of overlapping is less so weaker
4. Free rotation around p bond is not possible
5. Hybridized orbital never forms pi bond
6. No independent existence.
Must Read βοΈβ
π3π₯°2
Cuttle fish, dog fish, hag fish, angel fish, star fish, silver fish, flying fish, dolphin.
How many of the above are true fishes?
How many of the above are true fishes?
Anonymous Quiz
19%
(1) 5
42%
(2) 3
28%
(3) 4
11%
(4) 6
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β― β₯Λ ο½‘..... β€οΈπ¦ NCERTβ€οΈ
β’ Simple proteins are made up of amino acids only. Additional non-amino groups are absent, Conjugated proteins have non-amino prosthetic groups like metals or ions. Derived proteins are obtained from proteins through denaturation, coagulation and breakdown.β€οΈ
β’ On the basis of their structure, proteins are divided into - fibrous, globular and intermediate proteins. Fibrous proteins are elongated, thread like structures that have no tertiary structure. Globular proteins are rounded or oval in outline obtained by tertiary and quaternary foldings of polypeptide. Intermediate proteins are neither fibrous nor globular but of intermediate forms and characterstics.β€οΈ
β€οΈββ§ββββ§βββ€οΈ
β β β β β β
βΏ βΏ
β’ Simple proteins are made up of amino acids only. Additional non-amino groups are absent, Conjugated proteins have non-amino prosthetic groups like metals or ions. Derived proteins are obtained from proteins through denaturation, coagulation and breakdown.β€οΈ
β’ On the basis of their structure, proteins are divided into - fibrous, globular and intermediate proteins. Fibrous proteins are elongated, thread like structures that have no tertiary structure. Globular proteins are rounded or oval in outline obtained by tertiary and quaternary foldings of polypeptide. Intermediate proteins are neither fibrous nor globular but of intermediate forms and characterstics.β€οΈ
β€οΈββ§ββββ§βββ€οΈ
β β β β β β
βΏ βΏ
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π Important One Liners on Electric Charges π
-----------------------------------------------------------
β«οΈ If an object is attracted by another charged body, the first object may be oppositely charged or not charged because we know both an uncharged object and an oppositely charged object are attracted by another charged object.
β«οΈ If an object is positively charged it loses some of its electrons. The mass of an electron is 9.11*10^-31 kg. So, if a positively charged body loses βnβ number of electrons, it mass decrease by the amount n*9.11E^-31kg.
β«οΈ Though gold is a costly metal it is used in electroscope because of the property malleability. This means very thin and light sheets can be formed from gold simply by hammering or rolling and hence the deflection of the light gold plates increases.
β«οΈ The divergence of the plates of the Gold-leaf oscilloscope depends only on the presence of a charge, not on the quality of charge i.e. positive or negative. So, if the charge changes from positive to negative and vice versa the degree of divergence of the plates remains the same.
β«οΈ The same charges repel each other. So, they try to maintain maximum distance from each other and hence they try to remain at the outer surface of an object. If the charge remains on the inner surface or throughout the body, they will repel each other with greater force.
β«οΈ The human body is a good conductor and hence the charge produced by friction flew through his body to the ground. We can tackle the problem simply by holding the brass rod with the help of some insulated holder.
β«οΈ If the apparatus is initially in contact with some positively charged body and then comes in contact with another β«οΈ charged body and if the divergence increases we can deduce that the second body is also positively charged. If the divergence decreases then the second body must be negatively charged.
β«οΈ According to electrostatic series, glass is situated above silk. So, if the glass is rubbed with silk, the positive charge on glass and negative charge on silk is produced. Similarly, we can predict what is the nature of charge if we rub two di-electric substances together.
β«οΈ 1 Coulomb means 3*10^9 Electro Static Unit of charge. Coulomb and ESU are two different units of charge and their conversion formula is necessary. Coulomb is the unit of charge in the SI system and esu is the unit of charge in the CGS system.
β«οΈ The two spheres are oppositely charged by the same amount. So if they come in contact, both of their charges are neutralized. So they become uncharged and donβt attract or repel each other.
-----------------------------------------------------------
β«οΈ If an object is attracted by another charged body, the first object may be oppositely charged or not charged because we know both an uncharged object and an oppositely charged object are attracted by another charged object.
β«οΈ If an object is positively charged it loses some of its electrons. The mass of an electron is 9.11*10^-31 kg. So, if a positively charged body loses βnβ number of electrons, it mass decrease by the amount n*9.11E^-31kg.
β«οΈ Though gold is a costly metal it is used in electroscope because of the property malleability. This means very thin and light sheets can be formed from gold simply by hammering or rolling and hence the deflection of the light gold plates increases.
β«οΈ The divergence of the plates of the Gold-leaf oscilloscope depends only on the presence of a charge, not on the quality of charge i.e. positive or negative. So, if the charge changes from positive to negative and vice versa the degree of divergence of the plates remains the same.
β«οΈ The same charges repel each other. So, they try to maintain maximum distance from each other and hence they try to remain at the outer surface of an object. If the charge remains on the inner surface or throughout the body, they will repel each other with greater force.
β«οΈ The human body is a good conductor and hence the charge produced by friction flew through his body to the ground. We can tackle the problem simply by holding the brass rod with the help of some insulated holder.
β«οΈ If the apparatus is initially in contact with some positively charged body and then comes in contact with another β«οΈ charged body and if the divergence increases we can deduce that the second body is also positively charged. If the divergence decreases then the second body must be negatively charged.
β«οΈ According to electrostatic series, glass is situated above silk. So, if the glass is rubbed with silk, the positive charge on glass and negative charge on silk is produced. Similarly, we can predict what is the nature of charge if we rub two di-electric substances together.
β«οΈ 1 Coulomb means 3*10^9 Electro Static Unit of charge. Coulomb and ESU are two different units of charge and their conversion formula is necessary. Coulomb is the unit of charge in the SI system and esu is the unit of charge in the CGS system.
β«οΈ The two spheres are oppositely charged by the same amount. So if they come in contact, both of their charges are neutralized. So they become uncharged and donβt attract or repel each other.
π9π1
A concave lens of focal length 10 cm is placed in a liquid such that refractive index of lens and liquid is same. The new focal length of the lens will be
Anonymous Quiz
11%
0
52%
β
21%
f
16%
f/2
π7π2
If a diamagnetic substance is brought near north or south pole of a bar magnet, it is[EAMCET (Engg.) 1995;
CBSE PMT 1999, 2009; AFMC 2003]
CBSE PMT 1999, 2009; AFMC 2003]
Anonymous Quiz
21%
Attracted by the poles
41%
Repelled by the poles
30%
Repelled by the north pole and attracted by the south pole
8%
Attracted by the north pole and repelled by the south pole
π7
The electronic configuration of an element is
1s 2 2s 2 2p 6 3s 2 3p 3
What isthe atomic number of the element, which is just below the above element in the periodic table? (1995)
1s 2 2s 2 2p 6 3s 2 3p 3
What isthe atomic number of the element, which is just below the above element in the periodic table? (1995)
Anonymous Quiz
15%
(a) 36
20%
(b) 49
58%
(c) 33
7%
(d) 34
π₯°7π4β€1
Among the elements Ca, Mg, P and Cl, the order of increasing atomic radii is
(πMains 2010π)
(πMains 2010π)
Anonymous Quiz
19%
(a) Mg < Ca < Cl< P
50%
(b) Cl < P < Mg < Ca
16%
(c) P < Cl < Ca < Mg
15%
(d) Ca < Mg < P < Cl
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Important Points π -
1. Sulphurous acid - H2SO3
2. Sulphuric acid - H2SO4
3. Thiosulphuric acid - H2S2O3
4. Peroxymonosulphuric (Caro's acid) - H2SO5 (Peroxide bond)
5. Peroxydisulphuric acid (Marshal's acid) - H2S2O8 (Peroxide bond)
6. Pyrosulphurous acid - H
2S2O8 - (S-S linkage)
7. Pyrosulphuric acid - H2S2O7 (S-O-S linkage)
8. Dithionus acid - H2S2O4
9. Dithionic acid - H2S2O6
10. Polythionic acid - H2(S)11O6 (S-S linkage)
1. Sulphurous acid - H2SO3
2. Sulphuric acid - H2SO4
3. Thiosulphuric acid - H2S2O3
4. Peroxymonosulphuric (Caro's acid) - H2SO5 (Peroxide bond)
5. Peroxydisulphuric acid (Marshal's acid) - H2S2O8 (Peroxide bond)
6. Pyrosulphurous acid - H
2S2O8 - (S-S linkage)
7. Pyrosulphuric acid - H2S2O7 (S-O-S linkage)
8. Dithionus acid - H2S2O4
9. Dithionic acid - H2S2O6
10. Polythionic acid - H2(S)11O6 (S-S linkage)
π10β€2π₯1
The incorrect statement for Ξ±-D-(+)-glucose is
Anonymous Quiz
30%
It is optically active
21%
It is cyclic hemiacetal
27%
It has free aldehyde group
21%
It has five asymmetric carbon atoms
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For the second period elements the correct increasing order of first ionization enthalpy is
(β£οΈNEET 2019β£οΈ)
(β£οΈNEET 2019β£οΈ)
Anonymous Quiz
20%
(a) Li < Be < B < C < O < N < F < Ne
38%
(b) Li < Be < B < C < N < O < F < Ne
34%
(c) Li < B < Be < C < O < N < F < Ne
8%
(d) Li < B < Be < C < N < O < F < Ne
π15π₯4π2
A p-n junction diode can be used as
Anonymous Quiz
16%
condenser
34%
amplifier
16%
regulator
35%
rectifier
π17π9β€2
Hello Bacho,
Still waiting for the right time to buy year-long courses ?π₯π₯
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Thanks, PW
Still waiting for the right time to buy year-long courses ?π₯π₯
PW has come up with the biggest event in the history of PhysicsWallah.
Come and celebrate with us, as the REVOLUTION has just begun!!
On this GRAND occasion we have given our students 1000 wallet coins.π€π€
These coins are valid till 3rd June, 2022.
All the batches for year long courses are at never before prices !! π²π²
Arjuna JEE/NEET - Available for βΉ3800 only (previously βΉ4800)
Lakshya 2.0 JEE/NEET - Available for βΉ3000 only (previously βΉ4000)
PRAYAS / YAKEEN - Available for βΉ3800 only (previously βΉ4800)
UDAAN 2.0 - Available for βΉ1000 only (previously βΉ2000)
NEEV 2.0 - Available for βΉ1000 only (previously βΉ2000)
Donβt wait and waste your chance to achieve your dreams with PhysicsWallah!! ππ
Link to success - http://bit.ly/3lNsJZn
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Thanks, PW
π27β€2π€2