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  • 3 answers

Trishla Jain 4 years, 11 months ago

Heyy.....YOGITA INGLE, also tell about the "Stability"

Yogita Ingle 4 years, 11 months ago

<th>
       
Size of the particles < 1nm 1– 1000nm >1000nm
       
Nature Homogeneous Heterogeneous Heterogeneous
       
Filterability(Diffusion through parchment paper) Particles of true Solution diffuse rapidly through filter paper as well as parchment paper. Colloidal particles pass through filter paper but not through parchment paper. Suspension particles do not pass through filter paper and parchment paper.
       
Visibility Particles of True Solution are not visible to naked eye. Colloidal particles are not seen to naked eye but can be studied through ultra microscope. Suspension particles are big enough to be seen by naked eye.
       
Tyndall effect True Solution does not show Tyndall effect. Colloids shows Tyndall effect. Suspension may or may not show Tyndall effect.
       
Appearance Transparent Translucent Opaque

Satpal Kumar 4 years, 11 months ago

Hello
  • 1 answers

Yogita Ingle 4 years, 11 months ago

Different properties of solutions are as follows:

  • It is a homogeneous mixture.
  • Its particles are too tiny and have a diameter less than 1 nm.
  • The particles are not visible to naked eyes.
  • Particles don’t scatter a beam of light passing through it and hence the path of the light is not visible.
  • Solutes are inseparable from the mixture and do not sediment. A solution is stable.
  • The components of a mixture cannot be separated using filtration.
  • 1 answers

Gaurav Seth 4 years, 11 months ago

Protection: As it covers the entire body surface, it is the first line of defence against any kind of mechanical injury, chemical exposure, excessive fluid loss and infections. Ciliary projections present in the nose or upper respiratory tract, trap the dust particles and prevent it from entering the body

Absorption: The epithelial lining of the digestive tract absorbs water and nutrients

Exchange of substances: Epithelial tissue regulates the exchange of substances between body and external environment as well as the internal exchange between different parts of the body. Everything that enters the body or enters the bloodstream by absorption has to cross the epithelial barrier

Sensation: Sensory receptors are present in the epithelial tissue of the nose, eyes and ears, taste bud, etc. that help in transmitting signals from the external stimuli to the brain

Secretion: Various glands made up of epithelial cells secrete hormones, enzymes, saliva, mucus, sweat, etc.

  • 1 answers

Gaurav Seth 4 years, 11 months ago

A  N S W E R : Congenital d i s e a s  e  s
Congenital diseases are those diseases which are present in the child from birth. Common examples include Cystic fibrosis, Down syndrome, Haemophilia, etc.

  • 2 answers

Yogita Ingle 4 years, 11 months ago

Water hyacinth floats on surface of water because the parenchyma tissue present in water hyacinth has specialized tissue modification which is called Aerenchyma. This tissue has large air cavities due to which it provides the buoyancy to the plant and helps to float in the water.  

Water hyacinth is large aquatic plant which doesn’t has any attachment with the bottom of water body and it always remains visible floating on surface of water body.  

Gaurav Seth 4 years, 11 months ago

A n s w e r :

  W a t e r hyacinth floats in water due to presence of large air cavities in the parenchyma tissue. These specialized parenchyma tissue are called parenchyma.

  • 2 answers

Yogita Ingle 4 years, 11 months ago

When we wash clothes, our hands are exposed to water for a long time. Our hands behave as a hypertonic solution and the outside of our hands behave as a hypotonic solution. Our skin behaves as a semi-permeable membrane as it is porous. So actually the water is not absorbed here just leaving and thus it shrinks. Soap solution is a hypertonic solution i.e., more concentrate than our skin cells. The process is called exosmosis.

Gaurav Seth 4 years, 11 months ago

When we wash clothes, our hands are exposed to water for a long time. Our hands behave as a hypertonic solution and the outside of our hands behave as a hypotonic solution. Our skin behaves as a semi-permeable membrane as it is porous. So actually the water is not absorbed here just leaving and thus it shrinks. Soap solution is a hypertonic solution i.e., more concentrate than our skin cells. The process is called exosmosis.

  • 3 answers

Himanshu, Tarun,Sakshi Yadav 4 years, 11 months ago

There are several reasons for this. Atmosphere : Earth has a breathable atmosphere. Oxygen is the gas that is required for the life of most creatures. This is present in Earth's atmosphere and also in water. Oxygen is constantly put into the atmosphere by plants and trees. Earth's atmosphere also contains a small amount of carbon dioxide. This is a poisonous gas which makes up most of the atmosphere of planets like Venus and Mars and makes them unable to support human life. However, its smaller presence on Earth is useful as it helps to moderate the planet's temperature and is absorbed by plants during photosynthesis to produce oxygen. Earth's atmosphere is kept on the planet by its pull of gravity. Mars and Mercury are too small to keep atmosphere. As a result, Mercury has no atmosphere, and Mars' atmosphere is very thin, containing gases which have not managed to escape into space yet. Earth's atmosphere is thick enough to prevent poisonous rays of radiation from getting through it (this is what has happened on Mars). Temperature : Earth has a suitable temperature (amount of heat). Earth is situated from the sun at such a distance, that it receives perfect amount of solar energy from the sun, such that the life can sustain. The temperature is maintained by the moderate amount of carbon dioxide in the planet's atmosphere, which is constantly refreshed whenever there is a volcanic eruption. The temperature on Earth does not go from one extreme to the other either. Mercury can be anything from 200°c below freezing to 375°c above. At 375°c, water would only exist as a gas, and the planet would be completely dry. Venus has a surface temperature of 480°c, which would be much too hot for anybody to live in. Mars, although it can reach 25°c, can be as cold as -140°c, a temperature which would freeze blood and water. The other planets are even colder. Water : Earth has water! Water is believed to be the most important chemical necessary for life. It contains the oxygen needed for life and it allows life-providing molecules to move around easily. Water on Earth can be found anywhere, in its three states. Sunlight and photosynthesis : All planets receive light from the Sun, but no planet uses it as usefully as Earth. Trees and plants on the planet produce oxygen through a process called photosynthesis. Plants need the Sun to grow. Something else which helps the plants to photosynthesise on Earth is the length of time the planet takes to spin once on its axis. Taking just under 24 hours means that each side of the planet receives sunlight regularly. If we look at a planet like Venus, which takes 243 days to spin on its axis, it means that for a large period of time certain parts of the planet are in complete darkness. So even if the planet could support life, it would struggle to do so.

Ishita Budhwar 4 years, 11 months ago

Because the other planets can not have atmosphere, air and water

Gaurav Seth 4 years, 11 months ago

There are several reasons for this.
Atmosphere :
Earth has a breathable atmosphere. Oxygen is the gas that is required for the life of most creatures. This is present in Earth's atmosphere and also in water. Oxygen is constantly put into the atmosphere by plants and trees. Earth's atmosphere also contains a small amount of carbon dioxide. This is a poisonous gas which makes up most of the atmosphere of planets like Venus and Mars and makes them unable to support human life. However, its smaller presence on Earth is useful as it helps to moderate the planet's temperature and is absorbed by plants during photosynthesis to produce oxygen. Earth's atmosphere is kept on the planet by its pull of gravity. Mars and Mercury are too small to keep atmosphere. As a result, Mercury has no atmosphere, and Mars' atmosphere is very thin, containing gases which have not managed to escape into space yet. Earth's atmosphere is thick enough to prevent poisonous rays of radiation from getting through it (this is what has happened on Mars).

Temperature :
Earth has a suitable temperature (amount of heat). Earth is situated from the sun at such a distance, that it receives perfect amount of solar energy from the sun, such that the life can sustain.
The temperature is maintained by the moderate amount of carbon dioxide in the planet's atmosphere, which is constantly refreshed whenever there is a volcanic eruption. The temperature on Earth does not go from one extreme to the other either. Mercury can be anything from 200°c below freezing to 375°c above. At 375°c, water would only exist as a gas, and the planet would be completely dry. Venus has a surface temperature of 480°c, which would be much too hot for anybody to live in. Mars, although it can reach 25°c, can be as cold as -140°c, a temperature which would freeze blood and water. The other planets are even colder.

Water :
Earth has water! Water is believed to be the most important chemical necessary for life. It contains the oxygen needed for life and it allows life-providing molecules to move around easily. Water on Earth can be found anywhere, in its three states.

Sunlight and photosynthesis :
All planets receive light from the Sun, but no planet uses it as usefully as Earth. Trees and plants on the planet produce oxygen through a process called photosynthesis. Plants need the Sun to grow. Something else which helps the plants to photosynthesise on Earth is the length of time the planet takes to spin once on its axis. Taking just under 24 hours means that each side of the planet receives sunlight regularly. If we look at a planet like Venus, which takes 243 days to spin on its axis, it means that for a large period of time certain parts of the planet are in complete darkness. So even if the planet could support life, it would struggle to do so.

  • 3 answers

Neha Jangid ??? 4 years, 11 months ago

hlo

Happy Jain 4 years, 11 months ago

1

Manyata Joshi 4 years, 11 months ago

Kepler's first law - sometimes referred to as the law of ellipses - explains that planets are orbiting the sun in a path described as an ellipse. ... The resulting shape will be an ellipse. An ellipse is a special curve in which the sum of the distances from every point on the curve to two other points is a constant.
  • 5 answers

Surbhi Verma 4 years, 11 months ago

Liquid

Pranav Kumar 4 years, 11 months ago

Liquid

Bhavin Ajay 4 years, 11 months ago

Liquid

Nikhil Sidar 4 years, 11 months ago

Liquid

Yogita Ingle 4 years, 11 months ago

The physical state of water at 25 c is liquid.

  • 0 answers
  • 3 answers

Chaitali 1612 4 years, 11 months ago

Tu bhi mad hai isliye

Shakti Kumar 4 years, 11 months ago

क्योंकि तेरा दिमाग खराब है सनकी

Akshay Malagali 4 years, 11 months ago

Because you are mad
  • 0 answers
  • 1 answers

Suchitra Sen 4 years, 11 months ago

Sodium carbonate+ ethanoic acid- sodium ethanoate+carbon dioxide+water. According to law of conservation of mass.. Mass of reactant=mass of products = 5.3g+6g=2.2g+0.9g+8.2g =11.3g. =11.3g Hence these observations agree with law of conservation of mass. Hope it's helpful
  • 1 answers

Apurva Satkar 4 years, 11 months ago

Bcoz she won't be strong enough after a disease like maleria and a four day fast its a longer span of time and being without food may take up for ur all energy and maleria will weakn ur immune system
  • 1 answers

Yogita Ingle 4 years, 11 months ago

We have,

Mass of the rifle, m₂ = 3 kg

Mass of the Bullet, m₁ = 0.03 kg

The velocity of the bullet, v₁ = 100 m/s

Time taken by bullet to move through the barrel, t = 0.003 s

So,

Initial velocity of rifle, u₂ = 0 m/s.

Initial velocity of bullet, u₁ = 0 m/s.

Final velocity of bullet, v₁ = 100 m/s.

Final velocity of rifle = v₂ m/s.

Now, we know from the law of conservation of momentum,

m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

So,

(0.03 x 0) + (3 x 0) = (0.03 x 100) + (3 x v₂)

0 = 3 + 3.v₂

v₂ = -1 m/s

Therefore, acceleration of the rifle is given by,

So,

The Force experienced by rifle, therefore, would be,

F = m.a

F = 3.(-333.33)

F ≈ 1000 N

  • 4 answers

Anurag Yadav 4 years, 11 months ago

Anurag

Gaurav Seth 4 years, 11 months ago

Ignore the answer. by mistakenly  added

Gaurav Seth 4 years, 11 months ago

The weight of an object is the gravitational force acting on it. Since, the gravitational force of the moon is 1 / 6​th of earth. The weight of an object on moon is also 1 / 6​th as compared to its weight on earth.

Piyush Kumar 4 years, 11 months ago

60m/s
  • 5 answers

Apurva Satkar 4 years, 11 months ago

Yep

Anushka Mate 4 years, 11 months ago

Noo

Preeti Kumari 4 years, 11 months ago

Not started

Piyush Kumar 4 years, 11 months ago

Started

Black Pink 4 years, 11 months ago

Yes started
  • 5 answers

Chaitali 1612 4 years, 11 months ago

Purkinje

Apurva Satkar 4 years, 11 months ago

Purkinje

Anushka Mate 4 years, 11 months ago

Purkinje

Shivi Raghuvanshi 4 years, 11 months ago

Purkinje

Satyajeet Paswan 4 years, 11 months ago

Hugo von Mohl is a answer
  • 5 answers

Bhumika Dawar 4 years, 11 months ago

206

Piyush Kumar 4 years, 11 months ago

206

Black Pink 4 years, 11 months ago

Children- 300 Human or adults-206

Krutagn Thesiya 4 years, 11 months ago

206

Anubhav Yadav 4 years, 11 months ago

206
  • 1 answers

Gaurav Seth 4 years, 11 months ago

No. of Particles = given mass/Gram Atomic/Molecular Mass x Avogadro's Number

Gram atomic mass of oxygen = 16u (given)

Given mass = 1g

No. of atoms = 1/16 x 6.022 x 10²²

= 0.376375 x 10²² = 3.763 x 10²¹ atoms

So, X = 3.763 x 10²¹

 

Similarly, for aluminum,

No of atoms = 1/27 x 6.022 x 10²²

≈ 2.230 x 10²¹ atoms

  • 3 answers

Kalpesh Kabra 4 years, 11 months ago

True solution. | Collid _______________________________ ◆true solution is ◆collid is Homogeneous. Heterogeneous ◆the size of ◆the size of Particles is particle is Less than 1nm. 1-100nm. ◆it cannot be ◆it can not Separated through Separated Filtration. Filtration. ◆it doesn't scatter ◆scatters Beam of light. Beam of light ◆it is transparent. ◆translucent ◆eg. Salt in water. ◆eg. Milk

Aarti Yadav 4 years, 11 months ago

True Solution is a homogeneous mixture of two or more materials with a particle size of less than 10-9 m or 1 nm dissolved in the solvent. Example: Simple sugar solution in water. Particles can not be isolated from true solutions by using filter paper which is also not apparent to the naked eye.

Ayushi Yadav 4 years, 11 months ago

Sndnjxjdjx
  • 1 answers

Gaurav Seth 4 years, 11 months ago

Work

Definition Work is said to be done when a force applied to an object moves that object.
Formula We can calculate work by multiplying the force by the movement of the object.

 

W = F × d

Unit The SI unit of work is the joule (J)

Energy

Definition In physics, we can define energy as the capacity to do work.
Formula For the potential energy the formula is

 

P.E. = mgh

Unit The SI unit of energy is joules (J), which is named in honour of James Prescott Joule.

Power

Definition Power can be defined as the rate at which work is done i.e. energy converted.
Formula The formula for power is

 

P = W/t

Unit The unit of power is watt (W).
  • 3 answers

Lokesh Pandey 4 years, 11 months ago

Vc

Yogita Ingle 4 years, 11 months ago

The water droplets which appear on the wall of the glass jar when a potted plant is covered with it are because of the process, which is called transpiration.  The water droplets form because of the condensed water vapour which deposits on the wall of the jar. These vapours are lost through the process of transpiration. 
Transpiration is the process by which the evaporation of water takes place from the leaves of the plant and is released into the atmosphere. This evaporation takes place from the small pores, which are present on the underside of the leaf and are called stomata.

Aarushi Erande 4 years, 11 months ago

Due to transpiration
  • 1 answers

Yogita Ingle 4 years, 11 months ago

Lysosomes are single membrane bound cellular organelles. They possess many hydrolytic enzymes that destroy any foreign material inside the cell such as bacteria. It also digests poorly working cell organelles. So, they are also known as suicide bags. In these processes, they remove the cell debris. As lysosomes remove unnecessary particles and organelles from cell hence they are called as scavengers of the cells.

  • 0 answers
  • 3 answers

Anubhav Yadav 4 years, 11 months ago

Hlo

Ruchi Singh 4 years, 11 months ago

? Metal that conduct electricity. ? It's lustrous. ? It's shiny. I hope these three points help you .

Manish Pataliya 4 years, 11 months ago

Mettle is a solid thing

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