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4501.

Arabic name of the element sodium

Answer» Natrium???
Na
4502.

what is nucleus and its function?

Answer» Nucleus floats in the cytoplasmIt is also the brain of cellIt controls all the functions of the cellIt also helps in cell division It contains genetic material - chromosomes genes and Deoxyribo Nucleic Acid(DNA)?
Nucleus is the brain of wall it gives all order to do
Nucleus is the brain of the cell. It controls all the cellular activities in the cell. ???
4503.

What is milk consider as pure or impure? Give reason for your anawer.

Answer» Milk is impure because it is a mixture and contain different substance....pure solution is a solution in which all substance are of same
Due to reason mixture milk is inpure
Milkis impure because in milk there are fat and many proten
Cows milk is pure but now a days the packet milks are not pure
Milk is a impure .It is the mixture of water ,fat.
4504.

Why we say that sun rises and set like ugna and dubna?

Answer»
4505.

Experiment 9

Answer»
4506.

I which day malaria day was celebrated

Answer»
4507.

name the simple tissue

Answer» Parencyma, collencyma and sclerencyma
Parenchyma sclerenchyma and collenchyma are the three simple tissues
Parenchyma, Collenchyma and Sclerenchyma ???
Parenchyma
4508.

What does study of Tissue called????

Answer» Histology
4509.

Merits of democracy

Answer» It is the more accountable form of government.We can correct our own mistakes.Best decision is taken.We can elect our iwn leaders.......I gave only some points if you nedd more refer book
4510.

Where are periodic tests

Answer» The test which are taken by teachers whan there is periods going on of different subject
4511.

Huge damage to a moving train takes place when it suddenly collides with a stationary train why?

Answer» When the moving train collides with the stationary train it causes huge damage to the moving train as the impulse of the moving train depends upon the mass and velocity
4512.

Why is uniform circular motion called accelerated motion

Answer» Because in uniform circular motion threr is change in velocity....body is accelerating
4513.

What is mean by gene

Answer» Genes are the hereditary characters of our body
functional segments of DNAare called genes
4514.

State three laws of motion

Answer» 1) If an object is in rest it will remain in rest and if the object is in motion it will remain in motion until and unless an external force is applied on it. 2) The rate of change of momentum is directly proportional to the applied force. 3) Every action has an equal and opposite reaction.
Newton\'s Law of Motion: I. Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it. This we recognize as essentially Galileo\'s concept of inertia, and this is often termed simply the "Law of Inertia".II. The relationship between an object\'s mass m, its acceleration a, and the applied force F is F = ma. Acceleration and force are vectors (as indicated by their symbols being displayed in slant bold font); in this law the direction of the force vector is the same as the direction of the acceleration vector.III. For every action there is an equal and opposite reaction.
4515.

What is third law of motion ?

Answer» Every action has an equal and opposite reaction.
Whenever an object exerted force on another object, the another object also exerted same and equal force on first object
Every action has it opposite reaction
4516.

Priniciple of crystsllidation

Answer» the denser particles ate forced to the bottom and the lighter particles stay at the top when spun rapidly
4517.

write a short note on cardiac muscles

Answer» \xa0They are made up of branched,cylindrical and uninucleate cell.\xa0Each cell is surrounded by sarcolemma,has cytoplasm with longitudinal myofibrils,intercellular spaces are filled with loose connective tissue and blood capillaries.\xa0They have stripes or light and dark bands. They occur in heart.
4518.

Momentum SI unit

Answer» Kg. m/s???
kg.m/s
4519.

Prove that weight of an object on moon is one-sixth the weight of an object on earth

Answer» Real weight of our body is 1/6 of weight of our body but due to gravitation our body weight increased by 6 times but there is no gravity on moon this is why our body or any object weight happen 1/6 .
4520.

How do human reproduce

Answer» The process of fusion of sperm with egg (ovum) to produce zygote is called fertilization. Fertilization is the crucial stage in reproduction in humans.During coitus, ***** ejaculates millions of sperms into the ****** of the woman. Sperm will travel through the uterus to oviducts. At oviduct, one out of million sperms fertilizes the released ovum. The fertilized egg develops into a zygote.Zygote starts to divide into many cells and develops into an embryo. Embryo moves to the uterus and attaches to the uterus walls. This is called implantation. Implanted embryo eventually develops into a fetus.
4521.

Secondary cell are not use in

Answer»
4522.

Breeds of honey bee

Answer» Hamko pata he apis dorseta apis endica
4523.

What is the differnce btween compound and molecule...????What is the diffrnce between H and H2

Answer» Thnx
H2 is the molecule of hydrogen with 2 hydrogen atoms
Molecule is the smallest unit of compounds
4524.

Why shell fish are cultivated

Answer»
4525.

What is laten heat of fusion

Answer» It is the amount of energy which is required to change unit mass of substance (solid ) into unit mass if liquid without changing temperature.
4526.

What ia the latien name of carbom?

Answer» Carbon
Cedghde
4527.

Explain why a tyre become flat during summer than winter

Answer» Due to winter air between tyre .air density become low but volume increase
4528.

What is the difference between ligament and tendons?

Answer» Ligament joins bones to bones and tendon joins muscles with bones....
Ligaments-it connects bone to bone,It is very elasticated , it has considerable strength Tendons-it connects muscle to bone, It is less elasticated, it has great strength
Tendon-it joins muscles to the bonesAndLigament-it joins bone to bone☺️
4529.

What type of muscles are found in iris of eyes and in heart?...

Answer» Striated muscle fibre in iris and cardiac muscle fiber in heart???
Thread type muscles
4530.

Calculate the gravitational force between a 10kg ball and 20kg ball placed at a separation of 5metre

Answer» 80 kg/m^2
4531.

What is mean by acceleration

Answer» Rate of change of velocity per unit time ???
Acceleration\xa0is the rate of change of velocity of an object with respect to time. An object\'s acceleration\xa0is the net result of any and all forces acting on the object, as described by Newton\'s Second Law.
The rate of change in velocity is called acceleration
Acceleration means change in velocity.a=v-u/t
4532.

What is the si unit of inertia?

Answer» Answer :- (Kg.m²)
Moment\xa0of inertia may be expressed in units of\xa0kilogram\xa0meter squared (kg. m2) in SI units\xa0
4533.

What is nerve

Answer» Nerve is animal tissue.it is longest cell in the body
Nerve it is a type animal tissue which is connected with brain and spinal cord. It is nade up neurons cell
4534.

What is the theory of albert einstein

Answer» E=MCpower2
It was the theory of relativity....which estates that massive object cause a distortion in space time which is felt as gravity....
4535.

What is chromatography?what are its various applications

Answer» Chromatography is a used to seperate two miscible liquids with the help of filter paper and solvent and two misvible liquids Applications are :- 1)to know the amount of poisen present in a blood
4536.

6 comments on striated muscles

Answer» Striated muscles is also known as striped or voluntary muscles because of their function being in our control or will. This type of muscular tissue cells are very long fibres, enclosed in a membrane known as sarcolemma. The cells (fibre) are multi-nucleated. Each fibre has several longitudinal myofibrils embedded in cytoplasm. On these myofibrils are present characteristic light and dark bands which give it a striated appearance. These muscles are attached to the skeleton; so are also called skeletal muscles.
4537.

Osmosis is a special kind of diffusion. Comment on it.

Answer» The diffussion of semi premable membrane in solution through lwer solute concentration of a solution to higher concentration of solute in solution os called osmosis
4538.

Why CaCl2 is used to clear snow?

Answer» Because CaCl2 lowers the melting temperature of the snow and then we clean it easily.
4539.

Define first law of Newton?

Answer» If the object is in rest it will remain in rest and if the object is in motion it will remain in motion until and unless an external force is applied on it
1 law of newton stares that a object on rest will remain at rest until and unless an external force is applied on it
The object stay in the state of rest or state of motion until the force is applied to the object
4540.

Define 1 newton force

Answer» When 1 kg of mass produces acceleration of 1m/s2 it is known is 1 Newton force
4541.

Cell division

Answer» HeyyTheir are two types of cell divisionsBinary fission nd Budding☺️
4542.

carbon dioxide is a gas

Answer» Yes, because it\'s boiling point is less than room temperature. ???
Yesssss bro
Yess
Yes
4543.

RMM FUL FORM

Answer» Remote Monetring and Management. ???
4544.

Define synapse

Answer» The synapse is a small gap separating neurons.Information from one neuron flows to another neuron across a synapse.The synapse consists of:1.a presynaptic ending that contains neurotransmitters, mitochondria and other cell organelles,2.a synaptic cleft or space between the presynaptic and postsynaptic endings. It is about 20nm wide.
4545.

What is different between mass and weight

Answer» Unit of mass-kgUnit of weight- Newton
Mass remain same weight can refef on diff planets
4546.

why air exert pressure on contaner

Answer» Also........ there is a high kinetic energy in the particles of ,
Because air can\'t settle down that means it moves everywhere in the container and due to boombaat motion it strikes the walls of the container. Hence, exert pressure on the container
4547.

give reason air exert pressure

Answer»
4548.

What are the 5 chemicals with name and symbols

Answer» I can\'t understand your question
4549.

Why common salt is said to be a substance and salty water a mixture

Answer»
4550.

What is conversation of momentum and meristem tissue in plant tissue.

Answer» Meristem tissue is the growing tissue of plant which helps the plant in increasing the length, girth, etc. It is of three types - Apical meristem , Lateral Meristem & Intercalary meristem . ☺☺☺☺
Conservation of momentum is that sum of momentum before collision is =som of momentum after collisin