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8601.

Where are rhizomes find in the cancer cell and why

Answer»
8602.

Why nerve cell is called the largest cell

Answer» They are not largest they are longest cell of human beings
Because it carry messages from spinal cord to brain.
Because they are largest cell of human life
Because they are largest cell in wold
8603.

Mg+h3po4

Answer» 3Mg\xa0+\xa02H3PO4\xa0=\xa0Mg3(PO4)2\xa0+\xa03H2
8604.

Write two essential elements , that plant get from air and water?

Answer» Sun light and Carbondaioxide
Carbon dioxide and mineral
O2 and O3 short answer
From air- oxygen and nitrogenFrom water - Hydrogen and minerals...
8605.

Which of the following is a fungal disease first tetanus 2nd cross 3rd athlete foot 4th rabies

Answer» Athlete\'s foot is a fungal disease.
8606.

Uses of isotoped

Answer» 1 Isotope of uranium is used as fuel in nuclear reactors.2 isotope of cobalt is used as treatment of cancer.3 isotope of iodine is known as treatment of goitre.
8607.

Is corona more powerful than aids or saars how

Answer» No,because its death rate is low in comparison to saars and aids
8608.

Give difference : macronutrients and micronutrients

Answer» Macro nutrient are used in large amountWhereas micro nutrient are used in small amount
8609.

Why star is twinkle

Answer» They don\'t twinkle in reality but their light get reflected from their path
8610.

Why rats tearing clothes?

Answer»
8611.

Chemical formula of photosynthesis

Answer» 6CO2 +12H2O - C6H12O11
8612.

Why the water is only find on earth?

Answer» Due to presence of Hydrogen and Oxygen
8613.

How we are depend on diversity

Answer» People depend on biodiversity in their daily lives, in ways that are not always apparent or appreciated. Human health ultimately depends upon ecosystem products and services (such as availability of fresh water, food and fuel sources) which are requisite for good human health and productive livelihoods. People depend on plants for food, clean air, water, fuel, clothing, and shelter. Nearly all food webs begin with plants, the primary producers. During photosynthesis, green plants use sunlight to change carbon dioxide from the air and water into simple sugars made of carbon, hydrogen, and oxygen.\xa0
8614.

Write any three applications of ultrasound ?

Answer» Applications of ultrasound:\tUltrasound is used in industry for detecting flaws in metal blocks without damaging them.\tUltrasound is used in industry to clean ‘hard to reach’ parts of objects such as spiral tubes, odd-shaped machines and electronic components, etc.\tIt is used to investigate the internal organs of the human body such as liver, gall bladder, pancreas, kidneys, etc.
8615.

Define the term time period & amplitude ?

Answer» The time taken by a wave to travel a distance equal to its wave length is called time period .The highest displacement of the particles from the mean position ,when a wave passes through the medium is called amplitude of the wave.
\tThe time taken for one complete oscillation in the density (or pressure) of the medium is called the time period (T) of the wave.\tThe magnitude of maximum disturbance in the medium on either side of the mean position is called the amplitude (A).
8616.

Define the term wavelength & frequency ?

Answer» The Minimum distance in which a sound wave repeats itself is callled its wavelength
The length of one complete wave is called wavelength.The number of complete wave produce in one second is called frequency
\tThe distance between two consecutive compressions or two consecutive rarefactions is called wavelength (λ) of the wave. \tThe number of complete oscillations per second is called the frequency (ν) of the sound wave.
8617.

State two laws of reflection of sound ?

Answer» 1. Incident sound ,reflected sound ,and normal lie on the same point.2. Angle of incidence is equal to the angle of reflection.
The law of reflection of sound waves states that the angle of incidence is always equal to the angle of reflection. But unlike reflection of light on a highly smooth surface, in the reflection of the sound wave, a part of the incident wave gets transmitted to the medium where it hits.
8618.

Write wave formula for velocity of sound ?

Answer» Speed = wave length÷ frequency.Speed = frequency × wave length.
Velocity = Frequency * Wavelength
Velocity of sound = Frequency × Wavelength
8619.

What is the difference between diffusion & osmosis ?

Answer» The spreading and mixing of two substances with another substance due to the motion of its particle is called diffusion . The region of water molucles from higher concentration to lower concentration is called osmosis
Diffusion is the mixing of a substance to another substance due to motion of its particlesOsmosis is defined as the spontaneous movement of water molecules through a membrane
8620.

Diffrence between Plant & Animal cell

Answer» 1. Plant cell are larger than animal cell.2. Cell wall is present in plant cell but absent in animal cell.3.plastids are present in plant cell but absent in animal cell.4. Plant cell lake centrosomes and centroiles but they are present in animal cell.5. Plant cell have permanent and large central vacoule but animal cell have small and temporary.
8621.

Name the disease that can be caused by UV rays ?

Answer» Cancer of skin skin also become black and get burn.
Skin cancer
Health Effects of UV Radiation:\tSkin cancer (melanoma and nonmelanoma)\tPremature aging and other skin damage.\tCataracts and other eye damage.\tImmune system suppression.
8622.

Who discovered battery

Answer» Alessandro Volta
Allesntro volta
Allesndro volta
Allesendro volta
Alessandro Volta
Aditya Sharma
8623.

Write the values of gravitational constant acceleration due to gravity

Answer» Gravitational constant = 6.67 x 10^-11Acceleration due to gravity = 9.8 m/s^2
9.8m/s²
Force of gravity
Change in velocity involves acceleration. So whenever the objects falls towards earth an acceleration is involved due to earth\'s gravitational force.This acceleration due to earth\'s gravitational force is called acceleration due to gravity which is denoted by \'g\' and its unit is m/s2
8624.

A well labelled diagram of plant cells and animal cells

Answer» https://images.app.goo.gl/ZiHaQUoay2P6jqw5A(For plant cell)https://images.app.goo.gl/LmfTpWYNB6V38jq37(For animal cell)
8625.

Write the mass and radiation of earth and moon

Answer» The mass of earth is 6 × 10^24
The mass of moon is 7.4× 10^22
8626.

Mention any two important features of water.

Answer» Water is the main need of human and animals to sustainIf we do not be able to sustain no one will left on earth because we all are interconnected as we know that we take oxygen and exhale carbondioxide and we also know that plant take carbon dioxide and exhale oxygen
Water if get heated changes into vapour Water if get freezed changes into ice
* Water\'s high heat of evaporation.* Water\'s high polarity
8627.

Differentiate between animal cell and plant cell

Answer» Plant cell have cell wall and animal cell do not have cell wall .
A group of cells that are similar in structure and work together to do a peculiar function is called tissue.\xa0
A particular function is carried out by a cluster of cell is known as tissue
\tPlant CellAnimal CellLarge, with a distinct outline.Usually small, with a less distinct outline.Cell wall is present. The cell membrane is surrounded by the cell wall.Cell wall is absent.Plastids are present.Plastids are absent.A large vacuole is present in the centre.Vacuoles are absent; however, if present, they are small.Centrosome is absent.Centrosome is present.Cytoplasm is not so dense.Cytoplasm is denser and more granular and almost fills the entire cell.Golgi apparatus has smaller units called dictyosomes.Golgi apparatus is highly complex and prominent.\t
What is a tisue
8628.

Coldrink ma kon sa gas use kiya jata hai

Answer» Çàrboñ dioxidè áñd ñitrogeñ
Carbon dioxide
Car bon dioxide and nitrogen????
Carbon dioxide
8629.

If action and reaction forces are equal then why we would able to push object?

Answer» The third law of motion states that when one object exerts a force on another object, the second object instantaneously exerts a force back on the first. These two forces are always equal in magnitude but opposite in direction. The two opposing forces are also known as action and reaction forces.Example of third law of motion:\tWhen a gun is fired, it exerts a forward force on the bullet. The bullet exerts an equal and opposite reaction force on the gun. This results in the recoil of the gun. Since the gun has a much greater mass than the bullet, the acceleration of the gun is much less than the acceleration of the bullet.\tAs the sailor jumps forward out of a rowing boat, the force on the boat moves it backwards.
8630.

Is electric current scalar quantity or vector quantity

Answer» Scalar qualities
8631.

Are atom also matter?

Answer» Yes
8632.

Definitions of 9lesson

Answer»
8633.

Define scalar and vector quantities.

Answer» Thank u sir
\tScalar QuantityVector QuantityIt has magnitude onlyIt has magnitude as well as the directionIt does not have directionIt has directionIt is specified by a number and a unitIt is also specified by a number along with the direction and unitIt is represented by quantity symbolIt is represented by quantity symbol in bold or with the arrow sign aboveExample: Temperature, speed, etcExample: Acceleration, velocity, etc\t
Scalar quantities have only magnitude. Vector quantities have both magnitude as well as direction.
8634.

Why cell is structural and functional unit of life

Answer» Cell called the structural and functional unit of life because as you know the building is made up of many bricks as well as all the organisms are building are made up of cell and perfoming many functions in our body that\'s why it is also called basic and fundamental unit of life.
Cells are called the structural and functional unit of life because all the living organisms are made up of cells and all the functions that take place inside the organisms are performed by cells.
8635.

Why sky appears blue while the universe is black in colour?

Answer» The sky appears blue when viewed from Earth because of scattering of light particles I.e blue light gets refracted wherever there is atmosphere. As there is no atmosphere in space, astronauts see the actual colour of sky I.e black.
8636.

Why melody is so chocolaty

Answer»
8637.

Displacement

Answer» Displacement is defined as the change in position of an object. It is a vector quantity and has a direction and magnitude. It is represented as an arrow that points from the starting position to the final position. For Example- If an object moves from A position to B, then the object’s position changes. This change in position of an object is known as Displacement.
8638.

What are the application of diffusion in chemistry?

Answer» \tWe get the smell of our favourite food sitting in the drawing room even when the food is being cooked in kitchen. The vapor coming out from the food reaches to us because of diffusion in air and we get the smell of food.\tWe get the smell of burning incense stick sitting far from it. When an incense stick is burnt, the incense present in it vaporizes because of heat. The vapor coming out from the incense stick mixes with air and reaches to us.\tIn similar way we sense the good or bad smell from a distance.\tWhen sugar is added in water, it is mixed because of the diffusion. The particles of sugar collide with the particles of water because of their continuous movement. And finally they are mixed together because of diffusion.\tCarbonated drinks are prepared by the diffusion of gas in water. We notice a hiss sound when the cap of bottle of a carbonated drink is open, the hiss sound comes because of the diffused gas coming out of water. Soda, Soft drinks (coca-cola) etc. are the carbonated drinks and prepared mainly because of the diffusion of carbon dioxide in water.\tAquatic animals take dissolved oxygen in water while breathing. Aquatic plants synthesize their food under water because of the dissolved carbon dioxide in water. These gases dissolved in water because of the diffusion.
8639.

How can multicellular organisms orginated from single cell

Answer» Bad question
Multicellular organisms arise in various ways, for example by cell division or by aggregation of many single cells.Colonial organisms are the result of many identical individuals joining together to form a colony. However, it can often be hard to separate colonial protists from true multicellular organisms, because the two concepts are not distinct; colonial protists have been dubbed "pluricellular" rather than "multicellular".
8640.

Ecosystem and ecosystem service

Answer» There, ecosystem services are grouped into four broad categories: provisioning, such as the production of food and water; regulating, such as the control of climate and disease; supporting, such as nutrient cycles and oxygen production; and cultural, such as spiritual and recreational benefits.
8641.

Give reasonsA gas fills completely the vessel in which it is kept

Answer» This is because the gas exerts a pressure on the walls of the container known as gas pressure and fills it
8642.

Why there is only maximum 8 electrons in 1 cell

Answer» Because of octet rule
The sell have no more space
8643.

What is meant by the statement \' Rest and motion are relative term \' Give example

Answer» An object is said to be in motion if it changes its position with respect time and observer.An object is said to be at rest if it does not changes its position with respect time and observer.MOTION AND REST ARE RELATIVE TERMS.That means it all depends upon the observer who is observing the object.Example:1. A person standing in a moving bus is at rest with respect to bus and is in motion with respect to observer on the ground.2. A girl swinging in garden is in motion with respect to persons moving in garden and at rest with respect to swing.
8644.

How boiling is differ from evaporation

Answer» Boiling is an unnatural process where the liquid gets heated up and vapourized due to continuous heating of the liquid. Evaporation usually occurs on the surface of the liquid being heated up. Boiling usually occurs on the entire mass of the liquid that gets heated up. Bubbling effect is not visible in Evaporation.
8645.

distance and time period are derived or basic quantity

Answer» Distance and time are base quantity of physics . Take an example to understand what is the difference between base quantity and derived quantity .Base quantity is independent quantity like mass ,time distance ectDerived quantity is depended quantity like force , pressure ect
8646.

What is sublimantion??

Answer» The changing of solid into gas directly without changing into liquid is known as sublimation
8647.

Why metal have lustre quality.

Answer» The main reason Is the sea of electron
8648.

What is induction

Answer» Induction is the magnetic field which is proportional to the rate of change of the magnetic field. This definition of induction holds for a conductor. Induction is also known as inductance. L is used to represent the inductance and Henry is the SI unit of inductance.1 Henry is defined as the amount of inductance required to produce an emf of 1 volt in a conductor when the current change in the conductor is at the rate of 1 Ampere per second.
8649.

30K=c

Answer» -243
8650.

Which of the following have metal

Answer» Iron fan