आला आला दसरा, दुःख आता विसरा चेहरा ठेवा हसरा, साजरा करु दसरा.. दसऱ्याच्या हार्दिक शुभेच्छा"
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Forwarded from HORROR
A parallel plate air capacitor has capacity " C " farad, Potential " V " volt and energy " E " joule.
When the gap between the plate is completely filled with dielectric ?
When the gap between the plate is completely filled with dielectric ?
Anonymous Quiz
33%
A) Both V and E increase
38%
B) Both V and E decrease
23%
C) V decrease , E increase
6%
D) E Decrease , V increase
👍15❤6👏2🔥1
Forwarded from Rose
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Forwarded from HORROR
Which of the following statement is not correct ?
Anonymous Quiz
21%
A] Rhombic sulphur has S8 molecules while monoclinic has S6 molecules.
33%
B] The bond angle in ozone molecule is 117⁰ .
32%
C ] The order of boiling point of hydrides of 16th group elements is H2S < H2Se < H2Te < H20 .
14%
D] From SO2 to TeO2 , reducing power decrease .
👍11😱10🔥4🤩3
Forwarded from HORROR
The correct statement regarding inner transition elements is
Anonymous Quiz
30%
A) The general electronic configuration of actinoids is [ Xe ]⁵⁴ 4f ¹-¹⁴ 5d⁰-¹6s²
38%
B) The general electronic configuration of lanthanoids is [ Rn ]⁸⁶ 5f¹-¹⁴ 6d⁰-¹ 7s²
21%
C) Alkalies have no action on actinoids
11%
D) The principal oxidation state of lanthanoids is +1
👍13❤2🥰1
♻️ Important Scientific Laws and Theories ♻️
==============================
🔹 Ohm's Law - It states that the current passing through a conductor between two points is directly proportional to the potential difference across the two points provided the physical state and temperature etc. of the conductor does not change.
🔹 Pauli exclusion principle - It explains that no two electrons in the same atom or molecule can have the same set of quantum numbers.
🔹 Raman effect - It is the change in wavelength that occurs when light is scattered by the atoms or molecules in a transparent medium.
🔹 Tyndall effect - The scattering of light by very small particles suspended in a gas or liquid.
🔹 Boyles's Law - It states that temperature remaining constant, volume of a given mass of a gas varies inversely with the pressure of the gas. Thus,
PV = K (constant), where, P = Pressure and V = Volume.
🔹 Charles's Law - It states that pressure remaining constant, the volume of a given mass of gas increases or decreases by 1/273 part of its volume at 0 degree celsius for each degree celsius rise or fall of its temperature.
🔹 Coulomb's Law - It states that force of attraction or repulsion between two charges is proportional to the amount of charge on both charges and inversely proportional to the square of the distance between them.
🔹 Heisenberg principle (uncertainty principle) - It is impossible to determine with accuracy both the position and the momentum of a particle such as electron simultaneously.
🔹 Archimede's principle - It states that a body when wholly or partially immersed in a liquid, experiences an upward thrust which is equal to the weight of the liquid displaced by it. Thus, the body appears to lose a part of its weight. This loss in weight is equal to the weight of the liquid displaced by the body.
🔹 Aufbau principle - It states that in an unexcited atom, electrons reside in the lowest energy orbitals available to them.
🔹 Avogadro's Law - It states that equal volumes of all gases under similar conditions of temperature and pressure contain equal number of molecules.
🔹 Brownian motion - It is a zigzag, irregular motion exhibited by small solid particles when suspended in a liquid or gas due to irregular bombardment by the liquid or gas molecules.
🔹 Bernoulli's principle - It states that as the speed of a moving fluid, liquid or gas, increases, the pressure within the fluid decreases. The aerodynamic lift on the wing of an aeroplane is also explained in part by this principle.
🔹 Gay-Lussac’s Law of combining volumes - Gases react together in volumes which bear simple whole number ratios to one another and also to the volumes of the products, if gaseous — all the volumes being measured under similar conditions of temperature and pressure.
🔹 Graham’s Law of Diffusion - It states that the rates of diffusion of gases are inversely proportional to the square roots of their densities under similar conditions of temperature and pressure.
🔹 Kepler's Law - Each planet revolves round the Sun in an elliptical orbit with the Sun at one focus. The straight line joining the Sun and the planet sweeps out equal areas in equal intervals. The squares of the orbital periods of planets are proportional to the cubes of their mean distance from the Sun.
🔹 Law of Floatation - For a body to float, the following conditions must be fulfilled: The weight of the body should be equal to the weight of the water displaced and the centre of gravity of the body and that of the liquid displaced should be in the same straight line.
🔹 Law of conservation of energy - It states that energy can neither be created nor destroyed but it can be transformed from one form to another. Since energy cannot be created or destroyed, the amount of energy present in the universe is always remain constant.
🔹 Newton's First Law of Motion - An object at rest tends to stay at rest, and an object in motion tends to stay in motion, with the same direction and speed in a straight line unless acted upon by some external force.
==============================
🔹 Ohm's Law - It states that the current passing through a conductor between two points is directly proportional to the potential difference across the two points provided the physical state and temperature etc. of the conductor does not change.
🔹 Pauli exclusion principle - It explains that no two electrons in the same atom or molecule can have the same set of quantum numbers.
🔹 Raman effect - It is the change in wavelength that occurs when light is scattered by the atoms or molecules in a transparent medium.
🔹 Tyndall effect - The scattering of light by very small particles suspended in a gas or liquid.
🔹 Boyles's Law - It states that temperature remaining constant, volume of a given mass of a gas varies inversely with the pressure of the gas. Thus,
PV = K (constant), where, P = Pressure and V = Volume.
🔹 Charles's Law - It states that pressure remaining constant, the volume of a given mass of gas increases or decreases by 1/273 part of its volume at 0 degree celsius for each degree celsius rise or fall of its temperature.
🔹 Coulomb's Law - It states that force of attraction or repulsion between two charges is proportional to the amount of charge on both charges and inversely proportional to the square of the distance between them.
🔹 Heisenberg principle (uncertainty principle) - It is impossible to determine with accuracy both the position and the momentum of a particle such as electron simultaneously.
🔹 Archimede's principle - It states that a body when wholly or partially immersed in a liquid, experiences an upward thrust which is equal to the weight of the liquid displaced by it. Thus, the body appears to lose a part of its weight. This loss in weight is equal to the weight of the liquid displaced by the body.
🔹 Aufbau principle - It states that in an unexcited atom, electrons reside in the lowest energy orbitals available to them.
🔹 Avogadro's Law - It states that equal volumes of all gases under similar conditions of temperature and pressure contain equal number of molecules.
🔹 Brownian motion - It is a zigzag, irregular motion exhibited by small solid particles when suspended in a liquid or gas due to irregular bombardment by the liquid or gas molecules.
🔹 Bernoulli's principle - It states that as the speed of a moving fluid, liquid or gas, increases, the pressure within the fluid decreases. The aerodynamic lift on the wing of an aeroplane is also explained in part by this principle.
🔹 Gay-Lussac’s Law of combining volumes - Gases react together in volumes which bear simple whole number ratios to one another and also to the volumes of the products, if gaseous — all the volumes being measured under similar conditions of temperature and pressure.
🔹 Graham’s Law of Diffusion - It states that the rates of diffusion of gases are inversely proportional to the square roots of their densities under similar conditions of temperature and pressure.
🔹 Kepler's Law - Each planet revolves round the Sun in an elliptical orbit with the Sun at one focus. The straight line joining the Sun and the planet sweeps out equal areas in equal intervals. The squares of the orbital periods of planets are proportional to the cubes of their mean distance from the Sun.
🔹 Law of Floatation - For a body to float, the following conditions must be fulfilled: The weight of the body should be equal to the weight of the water displaced and the centre of gravity of the body and that of the liquid displaced should be in the same straight line.
🔹 Law of conservation of energy - It states that energy can neither be created nor destroyed but it can be transformed from one form to another. Since energy cannot be created or destroyed, the amount of energy present in the universe is always remain constant.
🔹 Newton's First Law of Motion - An object at rest tends to stay at rest, and an object in motion tends to stay in motion, with the same direction and speed in a straight line unless acted upon by some external force.
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👍9❤1
Forwarded from HORROR
Commonly in a mature fertilized ovule n , 2n and 3n condition is respectively found in
Anonymous Quiz
21%
A) Endosperms , nucleus and egg
26%
B) Antipodal , zygote and endosperms
24%
C) Egg , endosperms and nucleus
20%
D) Zygote, nucleus , egg
9%
E) antipodals , synergids and integuments
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🔥Revision Notes on Vectors
Some Basic Results of Vector Calculus:
1) Vectors in the same direction can be added by simply adding their magnitudes. But if the vectors to be added are in opposite directions, then their magnitudes are subtracted and not added.
2) Column vectors can be added by simply adding the values in each row.
3) You can find the magnitude of a vector in three dimensions by using the formula a2 = b2 + c2 + d2, where a is the magnitude of the vector, and b, c, and d are the components in each direction.
4) If l1a + m1b = l2a + m2b then l1 = l2 and m1 = m2
5) Collinear Vectors are also parallel vectors except that they lie on the same line.
6) When two vectors are parallel, the dot product of the vectors is 1 and their cross product is zero.
7)Two collinear vectors are always linearly dependent.
8) Two non-collinear non-zero vectors are always linearly independent
9) Three coplanar vectors are always linearly dependent.
10) Three non-coplanar non-zero vectors are always linearly independent
11) More than 3 vectors are always linearly dependent.
12) Three vectors are linearly dependent if they are coplanar that means any one of them can be represented as a linear combination of other two.
Some Basic Results of Vector Calculus:
1) Vectors in the same direction can be added by simply adding their magnitudes. But if the vectors to be added are in opposite directions, then their magnitudes are subtracted and not added.
2) Column vectors can be added by simply adding the values in each row.
3) You can find the magnitude of a vector in three dimensions by using the formula a2 = b2 + c2 + d2, where a is the magnitude of the vector, and b, c, and d are the components in each direction.
4) If l1a + m1b = l2a + m2b then l1 = l2 and m1 = m2
5) Collinear Vectors are also parallel vectors except that they lie on the same line.
6) When two vectors are parallel, the dot product of the vectors is 1 and their cross product is zero.
7)Two collinear vectors are always linearly dependent.
8) Two non-collinear non-zero vectors are always linearly independent
9) Three coplanar vectors are always linearly dependent.
10) Three non-coplanar non-zero vectors are always linearly independent
11) More than 3 vectors are always linearly dependent.
12) Three vectors are linearly dependent if they are coplanar that means any one of them can be represented as a linear combination of other two.
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Forwarded from HORROR
The range of the function f(x) = tan(Root)x²/9 - x² is
Anonymous Quiz
21%
A] (0, 3 )
43%
B] ( 3 , root 3 )
26%
C] (0, root3 )
9%
D] (root 3 , 3)
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Forwarded from HORROR
[💀] The number of unpaired electrons in the gaseous ions
Mn³+ , Cr³+ , V³+ and Ti³+ are
respectively :
Mn³+ , Cr³+ , V³+ and Ti³+ are
respectively :
Anonymous Quiz
24%
A) 3 , 2 , 3 and 1
33%
B) 2, 2 , 3 and 1
29%
C) 4 , 3 , 2 and 1
15%
D) 1 , 2 , 3 and 4
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Forwarded from HORROR
The locus of mid point of the chord of contact of tangents drawn from points lying on the straight line
4x - 5y = 20 to the circle X² + Y² = 9 is
4x - 5y = 20 to the circle X² + Y² = 9 is
Anonymous Quiz
19%
A] 20 (x² + y² ) - 36x - 45y = 0
27%
B] 20 (x² + y² ) + 36x - 45y = 0
31%
C] 36 ( x² + y² ) - 20x + 45y = 0
15%
D] 36 ( x² + y² ) + 20x - 45y = 0
7%
E] 20 (x² + y² ) - 36x + 45y = 0
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✅Genetic Terminology
▪️ Allele➖An alternative form of a gene
▪️ morph➖A silent gene
▪️ Angelman syndrome➖a rare genetically inherited form of mental retardation
▪️ Autosome➖Synonymous with somatic chromosomes
▪️ Chimera➖An exceptionally rare person composed of the cells derived from different zygotes
▪️ Chromosome➖Rod-shaped or thread-like structures located within the cell nucleus that carry genes encoded by DNA
▪️ Cloned gene➖A recombinant DNA molecule along with the gene of interest
▪️ Consanguinity➖Having a common ancestor, i.e., blood relations
▪️ Crossing over➖The exchange of genetic material between a pair of homologous chromosomes
▪️ Cross-pollination➖Mating of two genetically different plants (but of the same species).
▪️ Dizygotic twins➖Twins produced from two separate ova, which are separately fertilized
▪️ Deoxyribonucleic acid (DNA)➖Composed of nucleic acids, DNA encodes the genes that facilitate genetic information to be passed to offspring.
▪️ Evolution➖Genetic change in a population of organisms over period of time
▪️ Gamete➖A reproductive sex cell (i.e. ovum or sperm)
▪️ Gene➖Units of inheritance typically occurring at specific locations (a chromosome)
▪️ Gene Pool➖All of the genes in all of the individuals in a breeding population
▪️ Gene Flow➖The transference of genes from one population to another
▪️ Genetic Drift➖Evolution, or change in gene pool frequencies, resulting from a random chance
▪️ Genetics➖Study of gene structure, action, and the patterns of inheritance of traits from parent to offspring
▪️ Genome➖The full genetic complement of a species
▪️ Genomic imprinting➖The epigenetic phenomenon by which certain genes are expressed in a parent-of-origin-specific manner
▪️ Genotype➖Genetic constitution of a cell (of an individual organism)
▪️ Gout➖Genetically inherited metabolic disorder (or a type of arthritis)
▪️ Hemophilia➖Genetic disorder (largely inherited), problem in blood clotting
▪️ Heterozygous➖A cell containing two different alleles of a gene
▪️ Huntington's disease➖An inherited disorder that results into death of brain cells
▪️ Hybrid➖Combining the qualities of two animals or plants of different breeds, varieties, species (also known as crossbreed)
▪️ Mutation➖Change that occurs in DNA sequence
▪️ Pleiotropy➖When one gene influences two or more apparently unrelated phenotypic traits
▪️ Psoriasis➖ An inherited disease categorized by recurring thick, reddish patches on skin
▪️ Syntenic➖Genes occurring on the same chromosome
▪️ Zygote➖The fertilized egg is known as zygote
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GIVE REACTIONS ❤️||
▪️ Allele➖An alternative form of a gene
▪️ morph➖A silent gene
▪️ Angelman syndrome➖a rare genetically inherited form of mental retardation
▪️ Autosome➖Synonymous with somatic chromosomes
▪️ Chimera➖An exceptionally rare person composed of the cells derived from different zygotes
▪️ Chromosome➖Rod-shaped or thread-like structures located within the cell nucleus that carry genes encoded by DNA
▪️ Cloned gene➖A recombinant DNA molecule along with the gene of interest
▪️ Consanguinity➖Having a common ancestor, i.e., blood relations
▪️ Crossing over➖The exchange of genetic material between a pair of homologous chromosomes
▪️ Cross-pollination➖Mating of two genetically different plants (but of the same species).
▪️ Dizygotic twins➖Twins produced from two separate ova, which are separately fertilized
▪️ Deoxyribonucleic acid (DNA)➖Composed of nucleic acids, DNA encodes the genes that facilitate genetic information to be passed to offspring.
▪️ Evolution➖Genetic change in a population of organisms over period of time
▪️ Gamete➖A reproductive sex cell (i.e. ovum or sperm)
▪️ Gene➖Units of inheritance typically occurring at specific locations (a chromosome)
▪️ Gene Pool➖All of the genes in all of the individuals in a breeding population
▪️ Gene Flow➖The transference of genes from one population to another
▪️ Genetic Drift➖Evolution, or change in gene pool frequencies, resulting from a random chance
▪️ Genetics➖Study of gene structure, action, and the patterns of inheritance of traits from parent to offspring
▪️ Genome➖The full genetic complement of a species
▪️ Genomic imprinting➖The epigenetic phenomenon by which certain genes are expressed in a parent-of-origin-specific manner
▪️ Genotype➖Genetic constitution of a cell (of an individual organism)
▪️ Gout➖Genetically inherited metabolic disorder (or a type of arthritis)
▪️ Hemophilia➖Genetic disorder (largely inherited), problem in blood clotting
▪️ Heterozygous➖A cell containing two different alleles of a gene
▪️ Huntington's disease➖An inherited disorder that results into death of brain cells
▪️ Hybrid➖Combining the qualities of two animals or plants of different breeds, varieties, species (also known as crossbreed)
▪️ Mutation➖Change that occurs in DNA sequence
▪️ Pleiotropy➖When one gene influences two or more apparently unrelated phenotypic traits
▪️ Psoriasis➖ An inherited disease categorized by recurring thick, reddish patches on skin
▪️ Syntenic➖Genes occurring on the same chromosome
▪️ Zygote➖The fertilized egg is known as zygote
|| IF YOU LIKE IT
GIVE REACTIONS ❤️||
👍24❤12🥰7
Forwarded from HORROR
Oxidation number (s) of potassium in K2O , K2O2 and KO2 , respectively , is ( are ) ______
Anonymous Quiz
32%
A] +2 , +1 And + 1/2
39%
B] +1 , +2 and +4
20%
C] +1 , +4 and +2
9%
D] +1 , +1 and +1
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Forwarded from HORROR
The area bounded by the curve x = 2 - y - y² and the Y-axis is
Anonymous Quiz
19%
A] 9/2 sq. units
24%
B] 5/2 sq. units
27%
C] 7/2 sq. units
17%
D] 11/2 sq. units
13%
E] 10/2 sq. units
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Forwarded from HORROR
The number of orbitals associated with quantum number n = 5 , ms = +1/2 is _______
Anonymous Quiz
31%
A] 20
31%
B] 24
26%
C] 15
13%
D] 25
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Forwarded from HORROR
Identify the one which is not a disorder of the circulatory system .
Anonymous Quiz
25%
A] Emphysema
36%
B] Coronary artery disease
27%
C] Angina pectoris
13%
D] Myocardial infarction
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Forwarded from HORROR
The units of surface tension and viscosity of liquids are respectively __________
Anonymous Quiz
43%
A] N m-¹ , kg m-¹ s-²
30%
B] kg m-¹s-¹ , N m-¹
19%
C] kg s-² , kg m-¹
8%
D] kg s-¹ , kg m-²
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Forwarded from HORROR
The isomer of C4H9I which is capable of producing but-2-ene with alc. KOH solution is _______ .
Anonymous Quiz
18%
A] 1- iodobutane
42%
B] 1- iodo-2- methylpropane
29%
C] 2-iodobutane
11%
D] 2- iodo-2- methylpropane
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