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7551.

Find the time when a bal fall from height 1960m reach the ground at the speed 5m/sec

Answer» 392 is the answer, but I am not sure
7552.

Science Hindi ma ho

Answer» Ji pubg
7553.

Why evaporation is a surface phenomena

Answer» Evaporation is a surface phenomenon because it occurs in the surface. For example when we put wet clothes for drying we spread them out so that the surface area gets increased. When the surface area increases the water will get enough space to get into vapour stage and thus evaporation happens easily. This is why increase in surface area is a factor of evaporation.\xa0
7554.

When a carpet is beaten with stick dust comes out of it. Explain

Answer» Initially, the carpet and dust-particles are at rest. When the carpet is beaten, it is suddenly set into motion. The dust particles tend to remain at rest due to the inertia of rest, therefore, dust comes out of it.
Here, carpet\'s particles are at rest. When we beaten the carpet, the carpet\'s particles are also moving. We know that particles of matter are continuously moving
Initially, both carpet and the dust herein are at rest. When the carpet is beaten with a stick, the carpet is set into motion. Due to inertia of rest, the dust particles tend to remain at rest. As a result, the dust particles fall off.
7555.

Is egg a vegetarian or non-vegetarian?

Answer» Eggs are vegetarian, since they are not animal flesh (the meat, muscles or tissue of an animal).
Egg is neither vegetarian nor non-vegetarian.
Ananya what you consider? And provide a reason behind it.
If you consider that the egg is non-vegetarian, it is non - vegetarian and if yiu consider it vegetarian , it is vegetarian , it is depend on us what we consider it....?
Egg is vegetarian substance because egg have no muscles like animal muscles
Non vegetarian
7556.

When salt or sugar is addit to water is gets disappeared and does depict ?

Answer» It indicates that salt or sugar are soluble in water.
Sugar gets disappeared once added to water. This is because sugar is a substance that is soluble in water. We know that soluble substances disappear in water after getting dissolved completely. Hence the sugar disappears.But if sugar is added to a saturated solution the sugar wont dissolve. This is because the amount of solute required by the water is full and hence it cannot accept more number of solute after that. Hence sugar doesnt dissolve in a saturated solution.
7557.

What is the diff. Between diffusion and osmosis

Answer» \tOsmosisDiffusionIt is limited only to the liquid medium.Occurs in all mediums – Solid, Liquid and gas.Requires a semipermeable membrane.Do not require a semipermeable membrane.Depends on the number of solute particles dissolved in the solvent.Depends on the presence of other particles.Requires water for the movement of particles.Do not require water for the movement of particles.Only the solvent molecules can diffuse.Both the molecules of solute and solvent can diffuse.The flow of particles occurs only in one direction.The flow of particles occurs in all the directions.The entire process can either be stopped or reversed by applying additional pressure on the solution side.This process can neither be stopped nor reversed.Occurs only between similar types of solutions.Occurs between the similar and dissimilar types of solutions.\t
7558.

How we can separate cream form milk

Answer» By process of centrifugation
Centrifugation
By centrifugation
By centrifugation
Curd
7559.

What is a phinrograms and Chrisptograms

Answer» Cryptogamae-\tthey show hidden reproductive organs\tthey produce spores for reproductions\tit includes division thallophyta, bryophyta and pteridophyta\tthey don \'t show the presence of vascular tissues(except pteridophytes)Phanaerogams-\tshow presence of propermale and female gametes inside proper reproductive organs\tthey produce seeds for reproduction\tit includes divisionangiosperms and gymnosperms\tthey show the presence of vascular tissue
\t\t\t1. Acceleration due to gravity is the acceleration acquired by a body due to the earth\'s gravitational pull on it.1. The gravitational constant is numerically equal to the force of attraction between two masses of 1 kg that are separated by a distance of 1 m.2. Acceleration due to gravity (g) is a vector quantity.2. Universal gravitational constant (G) is a scalar quantity.3. It is different in different places on the surface of the earth. Its value also varies from one celestial body to another.3. The \'G\' is a universal constant, i.e., its value is the same (i.e. 6.7\xa0{tex}\\times{/tex}\xa010-11 Nm2 kg-2) everywhere in the universe.4. Its value depends upon the size and nature of the bodies.4. Its value does not depends upon the size and nature of the bodies.\t
7560.

Difference between g(acceleration due to gravity) and G(Universal gravitation constant).

Answer» Differences between acceleration due to (g)\xa0and Universal gas constant (G) are given below: Acceleration due to gravity (g) Universal gravitational constant (G)
7561.

State the Keplers laws of Planetary motion

Answer» Kepler’s Law states that the planets move around the sun in elliptical orbits with the sun at one focus. There are three different Kepler’s Laws. Law of Orbits, Areas, and Periods.\tKepler’s Law of Orbits – The Planets move around the sun in elliptical orbits with the sun at one focus.\tKepler’s Law of Areas – The line joining a planet to the Sun sweeps out equal areas in equal interval of time.\tKepler’s Law of Periods – The square of the time period of the planet is directly proportional to the cube of the semimajor axis of its orbit.
7562.

Name fluid contained inside cell

Answer» Cytoplasm
In cytoplas
Cytoplasm contained inside cell
Cytoplasm is a dense-fluid inside the cell that contains all the cell organelles.
7563.

What do you meant by substance

Answer» A pure form of matter is known as sustance.
7564.

What is a momentum

Answer» Product of mass and velocity of the body is called momentum.
The quantity of motion possessed by a moving body is known as momentum
Momentum of a body is defined as the product of the mass and velocity of the body. It\'s SI Unit is kg.m/s. i.e. p=mv
It is defined as product of mass and velocity
Visualisiert wirklich wohnungslos diish steht skrupellos Sieb
Momentum is the product of mass and velocity momentum is denotes by small p i.e p=mv
7565.

Tindill effict

Answer» The process of a beam of light is called tyndall effect
Answer:\xa0This scattering of a beam of light by the particles of a colloid is called the Tyndall effect. When we apply torch light on a galss of milk then the path of the light becomes visible but it is not so in case of water because in milk light is scattered by its very fine particles. See the following diagram:Tyndall effect can be observed when sunlight passes through the canopy of a dense forest. In the forest, mist contains tiny droplets of water, which act as particles of colloid dispersed in air. If is shown in the diagram below:\xa0
Ti
7566.

Are plant and animal made of same type of tissue? Give some reason

Answer» No, plants and animals are made up of different kinds of tissues. Tissues are a set of cells which performs a common function. Plants and animals are different from each other and their body operates in different ways which is why both are composed of different types of tissues so that they perform their own functions.
7567.

Prove the law of conservation of linear momentum

Answer» Law of conservation of linear momentum :- when there is no any external force applied on a system of particles then , momentum of system of particles will be conserved or you can say that if external force is zero. Then momentum of system of particles in intially = momentum of system of particles in finally.Mathematically,\xa0From Newton\'s second law,\xa0Fext = dP/dt\xa0If Fext = 0, ∫ dP =∫ 0.dt\xa0Means dP = 0e.g., Pi = Pf\xa0Let two bodies A and B of masses m₁ and m₂ are moving with velocities u₁ and u₂ , after collision velocities of bodies are v₁ and v₂ respectively.Then, initial momentum of bodies ,Pi= m₁u₁ + m₂u₂\xa0Final momentum of bodies, Pf = m₁v₁ + m₂v₂\xa0Because external force doesn\'t apply here, so, linear momentum will be conserved .e.g., Pi = Pf\xa0m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂[Note :- here doesn\'t include sign of velocity , but when you will solve question include direction of velocity as you know velocity is vector quantity
Hbsjz
7568.

Difference between monocot and dicot?

Answer» Monocots :-1. The seeds of these plants have only one cotyledon.2. Their leaves have parallel venation.3. The root system consists of similar fibrous roots.4. The flowers are trimerous, have three or multiple of three petals.5. The vascular bundles are scattered and closed (lack canbium). Secondary growth does not occur.Examples - Maize, wheat,rice,onionDicots :1. The seeds produced by these plants have embryos with two fleshy leaves, the cotyledons.2. Their leaves have reticulate venation, with a network of veins.3. The root system has a prominent tap root.4. The flowers have five or multiple of five petals.5. The vascular bundles are arranged in a ring. They are open (I.e., have cambium) and undergo secondary growth.Examples - Pea, potato, sunflower, rose, banyan.
7569.

Gati ka kaun sa Niyam jadatw ka Niyam kahlata hai

Answer» 3
7570.

Toran ka Si matrak kya hai

Answer»
7571.

Which state of matter consist of super

Answer» what super means if the matter contains superhot and superexited atoms it will be plasma and if the matter contains supercold and superunexited atoms it will be BEC (bose -einstien condensate)
Plasma
7572.

Application of the law of conservation of momentum

Answer» The two applications of the law of conservation of momentum are:i) Flights of jet planes and rocketsii) Recoiling of a gun on firing \xa0
7573.

Short note on ozone layer

Answer» Ozone layer is naturally found in the upper part of the atmosphere called stratosphere.It is created when ultraviolet radiation (sunlight) strikes the stratosphere, dissociating or splitting oxygen molecules (O2) to atomic oxygen (O). The atomic oxygen quickly combines with further oxygen molecules to form ozone.Ozone absorbs the potentially harmful ultra-violet radiation from the sun which can cause skin cancer and damage vegetation, among other things. Thus it plays a very important role.
7574.

\'Thirst\' is due to which element in our body-a. Waterb. Skyc. Earthd. Fire

Answer» Yes water
Water dear
7575.

How does cell to cell movement of water take place in plant

Answer» Cells are connected to each other and water do osmosis from one cell to another by pass through selectively permeable membrane.
By xylem tissue which is present in plants
Through selectively permeable membrane
Xylem
Soil
7576.

What is carbon disulphide

Answer» CS2 is an organosulfur compound and a volatile liquid with chemical name Carbon Disulfide. It is also called Carbon bisulfide or disulfidocarbon or methanedithione. It is a solvent for sulfur, bromine, fats, rubber, phosphorus, asphalt, selenium, iodine, and resins. It has been widely used to purify single-walled carbon nanotubes and in the manufacturing of flotation agents.
7577.

What is the name of cow and buffalo in science?

Answer» Scientific name of baffalo is bisan bisan and cow is bos taurus....?
7578.

Write three equation of motion and derive equation 2 types

Answer» 2 s=ut + 1/2 at×t3 2sa=v×v -u×u
1 v=u+at
7579.

What are the types of soil pollution?

Answer» Polithen
7580.

Why does meriatematic tissue lack in vacuole

Answer» ?
Meristematic cells divide frequently and give rise to new cells and hence they need dense cytoplasm and thin cell wall. Vacuoles causes hindrance in cell division as it is full of cell sap to provide turgidity and rigidity to the cell. Also vacuoles basically serve the purpose of storing of nutrients, excess salts etc. Meristematic cells do not need to store these nutrients as they have compact shape.
7581.

What is displacment

Answer» Shortest path covered with magnitude and direction.It is a vector queantity.It can be zero,negative and positive
Shortest distance travelled by the body from it\'s initial position to final position is known as displacement
It is the shortest distance to move from initial position to final positionEx body X Move 990m distance from AtoBBut the Direct distance is ? m this is called displacement
It 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.
A displacement is a minimum distance between starting point to ending point
7582.

What is sublimatiin

Answer» Sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.
I mean solid to gas
Sublimation is a process in which the matter transforms from solid state to liquid inspite of changing from solid to liquid and liquid to gases. Example naphthelene balls
Sublimation is a process by which a substance directly changes into a gas on heating without going to liquid state .
It is a process of changing of gases directly into gas without going to liquid state when heated is known as sublimation
Sublimation is a process through which a substance change directly into gas when heating without changing its state into liquid
sia ?
hi
7583.

How does cell to cell movement of water takes place in ppants

Answer» Water\xa0is passively transported into the roots and then into the xylem. Cell to cell movement of water inside the plant takes place through osmosis.\xa0
Movement of water takes place through osmoises.
7584.

Improvement in food resources

Answer» \tCrop Variety Improvement: Varieties or strains of crops can be selected by breeding for various useful characteristics such as disease resistance, response to fertilisers, product quality and high yields. Crop variety improvement is the manipulation of crop plants for increasing their yield and improving quality. Various approaches which are used for genetic improvement of crop plants are referred as plant breeding methods. These involve three processes:\xa0(i) Introduction – This refers to the transportation of crop plants from the place of cultivation to the place where grown earlier.(ii) Selection – This process involves the selection of most desirable offspring of a variety of plant for controlled propagation.(iii) Hybridisation – It involves the crossing between genetically dissimilar plants to produce a new kind. Crossing may be between two different varieties (intervarietal cross - breeding) or between the two different species of the same genus (inter specific cross – breeding) and between different genera (intergeneric cross – breeding).
7585.

Ncrt solutions

Answer» You can check NCERT Solutions here :\xa0https://mycbseguide.com/ncert-solutions.html
7586.

What is gangue

Answer» The unwanted impurities of sand and rocky materials present in the ore are known as gangue or matrix. We get a concentrated ore by removing the gangue present in it.
7587.

Steps of distillation methods

Answer» his method is used to separate the mixture of two miscible liquids where difference between their boiling points is at least 25 ºC.Acetone and water are miscible liquids also the difference between their boiling point is more than 25 ºC so they can be separated by the method of simple distillation.Follow the steps given below(i) Take a mixture in the distillation flask fit it with the thermometer.(ii) Arrange the apparatus as shown in the given figure.(iii) Heat the mixture slowly keeping a close watch on thermometer.(iv) Since the acetone has lower boiling point starts vaporises and condenses in the condenser which is finally collected in the beaker.
7588.

Coservation and formation of cruel oil to petroleum

Answer»
7589.

Chemical formula with Criss cross method

Answer»
7590.

Sir I want to know about minimum age for class 10th exam.

Answer» 14
The minimum age for class 10th board exams is 14 years.?
15, 16
15
16
7591.

what is super saturated solution?

Answer»
7592.

Difference between g and G (chapter 3..

Answer» g can be changed whereas G is always same
G stands for gravitationbut g stands for acceleration due to garvity ?
7593.

What is the force of gravity between the Earth and the mass of 1 kg placed on its surface

Answer» Pata nahi
9.8 N ,you can also refer to ncert example
About 10,000,000,000,000,00
7594.

Why one can jump higher on the surface of moon than on the earth

Answer» Because of low Gravitational force
7595.

Uses of dry ice

Answer» The most common use of dry ice is to preserve food, using non-cyclic refrigeration.\xa0
When someone dances that time for the effect it is ysed
7596.

What do you mean ny term plasma membrane?

Answer» Plasma is called the seletively premeable membrane because it the exit and entry of some materials in and out of the cell
Plasma membrane is also known as cell membrane,plasmalemma and cytoplasmic membrane.It is a selectively permeable membrane.It is present in both plant and animal cells.It was discovered by nageli and cramer.I hope you love this answer.
Plasma member is also known as cell member it is made up of phospolipdis it is outer most layer of plant cell
7597.

Why desert cooler cools better on hot summer day

Answer» On a hot dry day rate of evaporation is faster. In a desert cooler when exhaust fan is on, hot air enters through the straw mates and at this site evaporation of water takes place and that also at faster rate. It takes away heat from air so the air becomes cool even cooler on a hot dry day.
A desert cooler cools better on a hot dry day
A desert cooler cools better on a hot dry day because on a hot dry day temperature is high and humidity is less which helps in better evaporation. Due to the higher rate of evaporation it gives better cooling effect.
7598.

Chemical formula for glucose

Answer» C6H12O6
C6H12O6
C6H1206
7599.

Uses of ultrasound

Answer» Ultrasound is used in SONAR system in ships to identify the objects underneath. Ultrasound is transmitted and if it hits any surface it reflects back captured by the ship\'s SONAR system. SONAR stands for Sound Navigation And Ranging.
Ultrasound is used in X-ray, MRI scan and for checking any neuro injury
7600.

On which quantity effect of force is depend on

Answer» Mass and acceleration