All matter, however, is not the same. The matter around us can be classified into three categories, i.e. element, compound and mixture. This is called as classification of .....

Sedimentation : Sedimentation occurs when the suspended particles are large enough to settle to the bottom of a vessel under their own weight. Tea leaves falling to the bottom in a tea cup, and mud settling to the bottom of a pond, are examples .....

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For example, if you mix water and ethanol (alcohol), they get mixed with each other. This is called as miscible .....

If you mix oil and water and stir, you will find that oil does not dissolve in water. You will find oil at the top and  water at the bottom as shown below: Here, oil does not mix equally or uniformly in water and you can easily separate .....

On command 'on your mark', a runner will get on the mark/spot of a starting .....

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The liquid that passed throug the filter is the filtrate. The solid that was kept from passing throught the filter is the .....

5. The constituents of a compound can be separated only by chemical methods whereas,     The constituents of a mixture can be separated easily by physical .....

Distilled water is purified water. It is free from almost all biological, organic, inorganic and contaminants. It does not contain any minerals or elements and is 99.99% pure. So, doctors use distilled water in the injection to avoid any kinds .....

Let the number be '10x + y' Now, from first condition, 10x + y = 3(x + y) or, 10x + y = 3x + 3y  or, 7x = 2y or, y = 7x/2 .....(i) Again, from another condition, 10x + y + 45 = 10y + x or, 9y - 9x = 45 or, y - x = 5 or, y = x+ .....

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You can easily separate oil from water. Oil is unevenly (unequally) distributed in water. Due to this reason, mixture of oil and water is called as heterogeneous .....

Answer: Make a fuss        -     show anger or complaints about something unimportant Plenty of push    -     a lot of encouragement For the sake of   -     in .....

Look at the following mixture of sugar and  water: You can not separate sugar from a sugar solution. Here, sugar is dissolved uniformly (in equal amount) throughout the water. Hence, mixture of sugar and water is a homogeneous .....

Now, writing in ordered pair form, fog = {(2, 5), (5, 2), ( 1, .....

We know, Median = Lower Bound + i/f  (N/2 - cf) Here, Lower bound = 50, And,   i/f  (N/2 - cf) =  5 So, Median = 50 + 5 = .....

We know, 1st quartle = Lower Bound + i/f  (N/4 - cf) Here, Lower bound = 20, And,   i/f  (N/4 - cf) =  8 So, Median = 20 + 8 = .....

Here we have given equation is, 2x^2-5xy-3y^2+3x+19y-20=0 To find seperate equation we need to factorise it. So,    2x^2-5xy-3y^2+3x+19y-20=0 or, 2x2-5xy+3x-3y2+19y-20=0 or,  2x2-x(5y-3)x-(3y2-19y-20)=0 Comparing this with .....

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Air is considered as mixture for the following reasons ; 1. Air can be separated into its components like N2, O2 , Argon and CO2 by the process of fractional distillation      of  liquid air. 2. Air shows the properties of all .....

Let the numbers are a  and y, From the frist case, x / 28 = 28 / y  xy = 28 X 28  From the 2nd case, x / y = y / 224  x = (y2)/ 224 Putting x into first equation  ((y2)/224 ) y = (y3) / 224 = 28 X 28  y3 .....

Sound waves are compressional/longitudinal waves. Water waves are transverse waves . In sound waves, the amplitude of the wave is measured by the compression and is in the direction the wave is traveling in. Water waves have a vertical amplitude .....

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As we know, light travels faster than sound.

Light travels at: 300000000m/s. Sound only travels at 340m/s.

For a lightning strike that is 5000m (5km) away:

1) Here, N1 = 1500 V1 = 220V V2 = 12V N2= ? We know,  V1 / V2 = N1 /N2 or, N 2 = 1500 x 12 / 220 = 82 turns ( .....

Here,  Power consumed in a day = [40W + 50W] x 12 = 108 Hr-W Power consumed in 30 days = 30 x 108 Hr-W =  3240hr - W = 3240 /100 kW-hr = 3.24kW-hr                       .....

In water, the medium has particles that vibrate in a direction perpendicular to the direction of the propagation of wave. This Kind of wave produced is called Transverse Wave. So, water is called transverse .....

Sound is a mechanical wave that is created by a vibrating object. The vibrations of the object set particles in the surrounding medium in vibrational motion, thus transporting energy through the medium. For a sound wave traveling through air, the .....

There is no atmosphere on the moon. Sound needs a material medium to travel. Therefore,the peoples cannot talk to each other directly as there is no medium for sound to .....

Symbol of Tin is Sn  and its Latin name is .....

Symbol of Gold = Au, Latin name = .....

Symbole of  Lead = Pb, Latin Name = .....

Symbol of Silver = Ag, Its Latin name = .....

Iron is a chemical element with symbol Fe. Its  Latin name is ferrum and atomic number .....

 Potassium is a chemical element with symbol K . Its latin name is kalium. and atomic number .....

Sodium is a chemical element with symbol Na (from Latin natrium) and atomic number 11. It is a soft, silvery-white, highly reactive .....

Nitrogen is a colorless tasteless odorless element that as a diatomic gas is relatively inert and constitutes 78 percent of the atmosphere and that is a constituent of organic compounds found in all living tissues .....

Oxygen is a colorless, odorless, gaseous element constituting about one-fifth of the volume of the atmosphere and present in a combined state in nature. It is the supporter of combustion in .....

Wax is a solid substance containing a lot of fat that becomes soft and melts when warm. It is a substance that is secreted by bees and is used by them for constructing the honeycomb, that .....

Common salt is a mineral composed primarily of sodium chloride (NaCl), a chemical compound belonging to the larger class of salts; salt in its natural form as a crystalline mineral is known as rock salt or halite. Salt is present in vast .....

Carbonate is an ion consisting of one carbon and three oxygen atoms. The molecular formula for the carbonate ion is CO32- .....

Wate is a transparent, odorless, tasteless liquid, a compound of hydrogen and oxygen, H 2 O, freezing at 32°F or 0°C and boiling at 212°F or 100°C, that in a more or less impure state constitutes rain, oceans, lakes, rivers, .....

In the similar way, we use one or two letters to represent an element instead of writing out its name. This representation of an element is called as chemical symbol. For example: the element sodium is represented by the letters .....

- Snowflakes (ice .....

Observe the figure properly.   What did you see ? Its a type of filter that we use in our home . Did you recognized the holes? Any components containing holes, pores for special purpose are called porous substances. Porosity can vary .....

Good conductors are materials that can conduct electricity and heat efficiently. Most good conductors are metals but carbon (a non-metal element) also conducts electricity (pencil lead electrical switch experiment). Examples of good conductors .....

When you hold one end of the metal with your hand and heat the other end, you will start feeling hot after sometime. This is because heat travels from one end of the metal to the end where your hand is. This process is called as .....

Ductility is said to be the property of a material to stretch without getting damaged. Metals having ductile property can be stretched into wires. An example is copper wire. Malleability is said to be the property of a material to .....

First write it similar as we multiply non decimal numbers, Like this:               8   0   x          2  . 5 ............................. Then , Multiply the .....