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ANSWER:

Troposphere

stratosphere

thermosets

mesosphere

ionosphere

exposhere

Explanation:

Calculate number of ATOMS of each type in 6.84g of sucrose

So, 342 GM sugar CONTAINS = 1 mole = 6.022 x 1023 MOLECULES of sugar. Now, 1 molecule of sugar contains 12 carbon atoms, 22 H-atoms and 11 O-atoms.

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ANSWER:

EXPLANATION:

The answer MAY be anorthic

ANSWER:

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ANSWER:

ROABWIN

Explanation:

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BLOOMING

NICE QUESTION : )

Answer:

YES we need to PREVENT and treat diseases in by keeping VIEW of the whole society because the disease MIGHT spread and may be the whole society gets diseased..to prevent this contamination we must TAKE preventive measures

ANSWER:

STATE of MATERIAL, COMPONENTS

YES she SAID true but she didn't said that Ananaya pandey is better ashamed of you sis GANJA

Answer:

Crystallisationis a process that separates a pure solid in the form of its crystals from a solution. The CRYSTALLISATION method is used to PURIFY SOLIDS. For example, the SALT we get from sea WATER can have many impurities in it.

Explanation:

uv gx vg f fg C VCZ b sung E

1) centrifugation

2) distillation

3) SUBLIMATION

Answer:

Sandpaper. GLAZED paper

glass SHEET.

bark of TREE

Answer:

Compared with the billions of other STARS in the universe, the sun is unremarkable. But for Earth and the other planets that REVOLVE around it, the sun is a powerful center of attention. It holds the solar system TOGETHER; provides life-giving light, HEAT, and ENERGY to Earth; and generates space weather.

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Answer:-

☑ Define Mixture:-

▪️Mixtures are different from pure substances like elements and compounds because mixtures contain different substances that are combined physically but not chemically.

The individual components in a mixture retain their identity......✍

☑ Types of Mixture:-

◍ Homogeneous Mixture

◆ A homogeneous mixture has a uniform composition and appearance......✍

◆ Individual substances that constitute a homogeneous mixture cannot be visually differentiated.......✍

◆ A mixture is FORMED by combining two or more materials......✍

☑ Examples are:-

▪️air, saline solution, most ALLOYS, and bitumen.....✍

◍ Heterogeneous Mixture

◆ On the other hand, a heterogeneous mixture comprises two or more substances that can be distinctly observed, and even separated relatively easily......✍.

◆ The three phases or states of matter are gas, liquid, and solid.....✍

☑ Examples are:-

▪️sand, OIL and water, and chicken noodle soup....✍

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Answer:

The COMPONENTS of a COLLOIDAL SOLUTION are the DISPERSED phase and the dispersion MEDIUM. The solute-like component or the dispersed particles in a colloid form the dispersed phase, and the component in which the dispersed phase is suspended is known as the dispersing medium.

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It is a CHANGE made by a push/pull of our finger. When we pushes the torch's button forward it gets CONNECTED to circuit and hence light GLOWS. When we pull the switch circuit gets DETACHED and hence, light stops to glow.

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ANSWER:

The PROCESS USED is FRACTIONAL distillation

it separate the component according to their boiling point

Explanation:

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Explanation:

• To satisfy the LAW of conservation of mass...

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Answer

In chemistry, a colloid is a mixture in which one substance of microscopically DISPERSED insoluble or SOLUBLE particles is suspended throughout another substance.

The dispersed-phase particles or droplets are AFFECTED largely by the surface chemistry PRESENT in the colloid.

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Answer:

1.Nitrogen DIOXIDE and 2.sulfric + oxygen

Explanation:

if we ADD this all these are FORMED.

ANSWER:

CHEMICAL

chemical

physical

chemical

undesirable

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Answer:

An example of a physical change is the PROCESS of tempering steel to form a knife blade. A steel blank is repeatedly HEATED and hammered which changes the hardness of the steel, its flexibility and its ability to MAINTAIN a sharp EDGE. (I)They can be reversible.

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ANSWER:

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Answer:

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Explanation:

Fermionic CONDENSATE

Answer:

a.

a.

chemical

Explanation:

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Answer:

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Explanation:

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Answer:

You might have USED a cathode ray tube EVEN if you've never even heard of it until reading this lesson. Before LCD and Plasma TVs became commonplace, most people used bulkier cathode ray tube (CRT) televisions. The CRT in a television is used to display images on your screen. However, cathode ray tubes have been used for more than entertainment. It was cathode ray tubes that allowed the English physicist J.J. Thomson to discover the existence of electrons in 1897.

How Cathode Ray Tubes Work

Before we see how J.J. Thomson used the cathode ray tube to discover the electron, we need to know how a cathode ray tube WORKS. We'll look at a basic CRT like what J.J. Thomson would've used, as seen in the diagram below.

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ANSWER:

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Explanation:

1)Evolution of gas. Some chemical REACTIONS are characterised by the evolution of gas. ...

2)Formation of precipitate. Some chemical reactions are characterised by the formation of precipitate. ...

3)Change in colour. Some chemical reactions are characterised by change in colour. ...

4)Change in temperature. ...

5)Change of state.

ANSWER:

You might have used a cathode ray tube even if you've never even heard of it until reading this lesson. Before LCD and Plasma TVs became COMMONPLACE, most people used bulkier cathode ray tube (CRT) televisions. The CRT in a television is used to display images on your screen. However, cathode ray tubes have been used for more than entertainment. It was cathode ray tubes that allowed the English physicist J.J. Thomson to discover the existence of electrons in 1897.

How Cathode Ray Tubes Work

Before we see how J.J. Thomson used the cathode ray tube to discover the ELECTRON, we need to KNOW how a cathode ray tube works. We'll look at a basic CRT like what J.J. Thomson would've used, as seen in the diagram below.

Answer:

Because it consists of two ELEMENTS i.e. COPPER and oxygen.

As we know ANYTHING made up of two or more things is called a compound.

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Answer:

7) Physical change

8) CHEMICAL change

9) Melting

10)Evaporation

Explanation:

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Answer:

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Answer:

You ALSO know that all of them contains citric acid. This is the best natural EXAMPLE to prove that acids are sour in taste. On the other hand you all know that increased AMOUNT of BAKING soda makes the cake taste bitter. This is because baking soda is a base and hence TASTES bitter.

ANSWER:

ELECTROLYSIS a method of separating elements by pushing an ELECTRIC current through a compound.

ANSWER:

EVAPORATION of the water

Explanation:

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Explanation:

The negative cathode electrode attracts CU2+ ions (from copper SULFATE) and H+ ions (from water). Only the copper ION is discharged, being REDUCED to copper metal. The less reactive a metal, the more readily its ion is reduced on the electrode SURFACE, copper is below copper in the reactivity series.

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ANSWER:

UREA dissovled in 90 gram of water is 10 gram

Explanation:

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Answer:

fairly SOLUBLE MEANS it is soluble CLOSE to the need

appreciably soluble means it is soluble to the need

Explanation:

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Answer:

no

Explanation:

No it is not a chemical CHANGE. It is a Synthesis reaction, as you have combined Nh3and HCL to form larger compound.

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ANSWER:

SOLUTION

Explanation:

A burning candle is an example of matter undergoing a chemical reaction and being changed into new substances. The Law of Conservation of Mass applies as the total mass of the PRODUCTS is EQUAL to the total mass of the reactants. Candle WAX is a HYDROCARBON that undergoes combustion.

ANSWER:

1. अन्न
2. पाणी
3. निवारा
4. कपडे

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ANSWER:

The phenomena of change of one state of matter into ANOTHER and vice versa is called INTERCONVERSION of state of matter. The TWO factor which are responsible for the interconversion of matter are temperature and pressure.

ANSWER:

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Answer:

Dispersed PHASE is LIKE the SOLUTE in colloid.

Dispersed medium is like the solvent in colloid.

For example in fog the dispersed medium is AIR and the dispersed phase is water.

Explanation:

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Answer:

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Explanation:

The CSIR- National Physical Laboratory of India, situated in New Delhi, is the measurement standards laboratory of India. It maintains standards of SI UNITS in India and CALIBRATES the national standards of weights and MEASURES.

Answer:

THERMOSET vs. Thermoplastics. ... The primary physical difference is that thermoplastics can be remelted BACK into a liquid, WHEREAS thermoset plastics always remain in a permanent solid state. THINK of thermoplastics as butter – butter can be melted and cooled multiple times to form various shapes

EXPLANATION:

A chemical EQUATION is the symbolic representation of a chemical reaction in the FORM of symbols and FORMULAE, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side. ... The first chemical equation was diagrammed by Jean Beguin in 1615

Answer:

J J thomson discovered CATHODE ray contain NEGATIVE charge

Explanation:

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• An electron is a negatively charged SUBATOMIC particle. It can be either free (not attached to any atom), or bound to the NUCLEUS of an atom. Electrons in atoms exist in spherical shells of various radii, representing ENERGY levels. ... The CHARGE on a single electron is considered as the unit electrical charge.