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(i) When a BEAM of light is PASSED through a colloidal sol, colloidal particles scatter light and we can see the path of light. Thus, Tyndall effect is observed.

(ii) When an electrolyte, NaCl is added to hydrated ferric oxide sol.

NaCl provides colloidal particles which COAGULATE oppositely CHARGED ferric hydroxide colloidal particles bearing positive charge.

(iii) When electric current is passed through a colloidal sol, the colloidal particles move towards oppositely charged electrode, where they lose their charge and are coagulated. The process is known as electrophoresis.

Explanation:

Path of light is in the picture

50

Explanation:

first CALULATE the milimolesof NaCl = 1/20 × 20 = 1 milimole

now 1 milimoles is required for cougualtion of 20 ML therfore for one litter 50 milimoles are required.

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Your SOLUTION is in the PICTURE

ong>ANSWER:

I think option d

Explanation:

option d

ong>EXPLANATION:

Please Mark My Answer BRAINLIEST .

ong>Answer:

➡ Balban was the Prime MINISTER of (1246-66) Sultan Nasir-ud-din Mahumd and also the MEMBER of NOBLE FORTIES.

ong>ANSWER:

DJ kaysh ETCH of d TYCOON

ong>Explanation:

Answer: =5.467\times 10^{-6}=5.467×10

−6

moles

Step-by-step explanation:

Since,

\text{The number of moles}=\frac{\text{ Mass}}{\text{ Molecular mass}}The number of moles=

Molecular mass

Mass

Here, the mass of the CARBON = 65.6 MICROGRAM = 65.6\times 10^{-6}65.6×10

−6

And, the molecular mass of the carbon = 12 GRAM,

Thus,

\text{The number of moles}=\frac{65.6\times 10^{-6}}{12}The number of moles=

12

65.6×10

−6

=5.467\times 10^{-6}=5.467×10

−6

moles.

may this helps you!!!

ong>Explanation:

The Aufbau Principle states that in the GROUND state of an ATOM, an ELECTRON ENTERS the orbital with LOWEST energy first and subsequent electrons are fed in the order of increasing energies. The word 'aufbau' in German means 'building up'. Here, it refers to the filling up of orbitals with electrons

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ong>ANSWER:

During the motion, if the centre of GRAVITY of molecule changes, the molecule possess translational ENERGY. Translational refers to the movement in horizontal or vertical direction.

ong>Answer:

all are the CORRECT IUPAC NAME only they are not incorrect.

here is your answer

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ong>Answer:

The CONJUNCTION of a carbonyl and a hydroxyl group forms a functional group known as a carboxyl group. The hydrogen of a carboxyl group can be REMOVED (to form a NEGATIVELY charged carboxylate ion), and thus molecules containing the carboxyl group have acidic PROPERTIES and are generally known as carboxylic acids.

substances are capable of adding oxygen to others. These are KNOWN as oxidizing agents. The SUBSTANCE which loses electrons to the other substance and GETS OXIDIZED to the higher valency state is known as reducing agent..

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ong>Answer:

I have calculated

Explanation:

No NEED to THANK me I KNOW I am an INTELLECTUAL

No reaction OCCURS as H is more reactive than Cu. So Cu, being LESS reactive than H does not REPLACE it. So no change occur.

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(d) is your correct answer

i think its HELPS you

ong>Explanation:

Salt crystallization is a major agent of deterioration in buildings, especially important when belonging to a city’s cultural heritage. The study of this process is therefore essential to understand the decay evolution and to establish a correct preservation protocol to avoid future interventions. KNO3 is a salt found commonly associated to other salts in weathered areas of buildings. In order to recognize the presence of this salt without sampling, the crystallization of KNO3 was assessed by means of a new non-destructive tool, the infrared thermography. The supersaturation necessary for the nucleation of crystals was obtained by evaporation of solution droplets that allowed the recording of all the processes with an infrared thermography camera. The droplets were tested at different temperatures by placing them on an electric plate at 20 °C and 50 °C to simulate real conditions of building stones placed outdoors and also at 75 °C to EMULATE extreme situations of stones in arid environments. The droplets evaporated from four different substrates all of them with different interstitial properties: a black 3M tape frequently used as a reference substrate in similar works, a glass slide, and a marble plate with two different artificial finishes, POLISHED and sawed. Thus, the contact angle was around 30° on the glass substrate, over 60° on the 3M tape and the polished marble, and close to 90° in the case of the sawed marble. Results highlighted the usefulness of the infrared thermography in the study of crystallization processes. The exothermic reaction associated to crystallization was too low to be OBSERVED, and only punctual heat release spots were recorded. However, a creeping process that creates efflorescence crystallization was clearly observed as an intermittent decrease in the thermographic signal preferentially at high temperatures. The contact angle of the droplet with the surface played an important role in the crystallization type (crystal shape, location, spreading length) when comparing different substrates (i.e., glass and black tape). The different test temperatures revealed different behaviors related to the substrate. The solution spread more at 20 °C on the black tape creating efflorescences while at 50 °C this kind of crystals formed on the stone with both finishes. At 75 °C, the solution spread uniformly over the surface of the glass slide while crystals grew on the top of preexisting ones for the three other substrates with HIGHER contact angle.

ong>ANSWER:

I only want to say that:::::::::::::::::::

Explanation:

PAHELI phursat Mai nikal

ong>Answer:

SULPHUR will DISSOLVE in Carbon DISULPHIDE creating a solution.

ong>ANSWER:

density is a mass PER unit VOLUME= mass/volume

300/125=2.4g/ml

ong>ANSWER:

The PRODUCT 'C' in the following sequence of CHEMICAL reaction is Acetoxime.

CH

3

COOH

Ca(OH)

2

(A)

(CH

3

COO)

2

Ca

Δ

(B)

C

H

3

COCH

3

NH

2

OH

Acetoxime

CH

3

C

∣

H

3

C

=N−OH

Acetic acid reacts with calcium hydroxide to give calcium acetate.

Calcium acetate on dry distillation gives acetone.

Acetone UNDERGOES condensation reaction with hydroxylamine to form acetoxime.

Option D is correct.

on C is the CORRECT ANSWER

Your QUESTION isn't clear to me

Write it clearly

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ong>Answer:

Isoelectronicity is an EFFECT observed when DISTINCT molecular entities have identical ELECTRON configurations. Two or more molecular entities are described as isoelectronic if they have the ... 2, and NO are isoelectronic because each has two NUCLEI and 10 valence electrons, with each atom considered to have 5 of them .

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0.97 PERCENTAGE of NITROGEN

It's. (a) SO2.Acid......

ong>Answer:

B) Impure

Explanation:

A mixture is an impure SUBSTANCE. It consists of different elements and SUBSTANCES combined together PHYSICALLY in an unknown ratio. ... Their constituents are not combined chemically but only physically. The mixture still shows all the properties of its constituents.I guess!!

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B) COMPLEX words

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ong>EXPLANATION:

POTENTIAL difference = Work DONE / Charge MOVED.

vdvdbd

Explanation:

bdvdvdvbxvfvfvfvbdbdbddvbdbbdvdvdvdvdvdvbdbvdvdvevevevevevveveveveveveveveveveveveveveveveve

ong>ANSWER:

The Wohl–Ziegler REACTION is a chemical reaction that involves the allylic or benzylic BROMINATION of hydrocarbons using an N-bromosuccinimide and a radical initiator. Best YIELDS are achieved with N-bromosuccinimide in carbon tetrachloride solvent. Several reviews have been published.

Explanation:

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YHC jfxib jmojvkdhhbbjkaiu

ong>Answer:

Temporary hardness can be largely REMOVED by boiling when bicarbonates are decomposed yielding INSOLUBLE CARBONATES on hydroids. Permanent hardness cannot be removed by boiling.

Explanation:

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ong>Answer:

Two conditions essential for USING distillation method are as FOLLOWS. The two liquids should be miscible with each other. This means that the two liquids should PROPERLY mix with each other. The DIFFERENCE in boiling point of the two liquids should be less than 25 degree celsius

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ound:-

Compounds is a chemical SUBSTANCE composed of MANY identical molecules composed of ATOMS from more than one element HELD TOGETHER by chemical bonds.

C + O2 -----------> CO2

(II) C6H12O6 + 6O2 ---------> 6CO2 + 6H20

ong>Answer:

Kingdom Plantae Kingdom Animalia1. Have multicellular eukaryote plants.Have multicellular eukaryote animals.2. Presence of cell wall (made up of cellulose.)Absence of cell wall.3. Capable of producing their own food (autotrophic mode of nutrition.)Depend on OTHERS for their food REQUIREMENTS (heterotrophic mode of nutrition.)4. Photosynthesis occurrence due to the presence of chloroplast.Since they are non-green in nature and do not produce chlorophyll, they do not undergo photosynthesis.5. Are immobile.Are mobile.6. Can grow throughout their life.Achieve a maximum size and then stop growing.7. Consume carbon dioxide and release oxygen.Consume oxygen and release carbon dioxide.8. Have two sets of chromosomes (DIPLOID.)Have only one set of the chromosome (HAPLOID.)9. Have reserved food in the form of starch.Have reserved food in the form of glucose.

Na2CO3.10H2O

common name - washing soda ( sodium CARBONATE)

ong>Answer:

BEACUSE it is the conductor of heat and not chemically unreavtive

SORRY don't KNOW the answer

ong>ANSWER:

kyuki esme molecules BATANE the

toh answer BHI molecules me hi aayege

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The temperature at which hydrogen molecules have the same kinetic energy as oxygen molecules have at. 40°C is : 3 28 T.

vobs

Explanation:

v voilet blue

o ORAN geblue

b blue

s sky blue

ong>ANSWER:

The BLACKSMITH heat the METALIC rim to fix it into the WOODEN wheel

It is a physical change