Explore topic-wise InterviewSolutions in .

impurity atoms—replacing one TYPE of atom by ANOTHER type of atom by SUBSTITUTION in a LATTICE; intrusion of impurity atom into the INTERSTITIAL space of the crystal lattice; Frenkel pair—vacancy together with interstitial atoms; and. Schottky defect—vacancy arising due to the release of an atom on the surface.

30°C = 86° F , 40°C=104°F

When light is shined through a true SOLUTION, the light passes cleanly through the solution, however when light is PASSED through a COLLOIDAL solution, the substance in the dispersed PHASES scatters the light in all directions, making it readily seen. For example, light being shined through WATER and milk.

tion:Iodoform test is used to check the presence of carbonyl compounds with the structure R-CO-CH3 or alcohols with the structure R-CH(OH)-CH3 in a given unknown substance.The reaction of iodine, a base and a methyl ketone gives a YELLOW precipitate along with an “antiseptic” smell. It also TESTS positive for a few specific secondary alcohols that contain at least one methyl group in the alpha position.Iodoform Test DescriptionWhen Iodine and sodium hydroxide are added to a compound that contains either a methyl ketone or a secondary alcohol with a methyl group in the alpha position, a pale yellow precipitate of iodoform or triiodomethane is formed. It can be used to identify aldehydes or ketones. If an aldehyde gives a positive iodoform test, then it must be acetaldehyde since it is the only aldehyde with a CH3C=O group. Given below are a few example reactions for positive iodoform tests.Iodoform Test DescriptionIodoform Test DescriptionCompounds That Give Positive Iodoform TestAcetaldehydeMethyl KetonesEthanolSecondary Alcohols that contain Methyl Groups in Alpha PositionIodoform Test MechanismFirst, the Hydroxide ion removes an acidic alpha hydrogen. This results in the formation of an enolate ion. The enolate anion then goes on to displace an iodide ion from the iodine molecule. This process repeats twice to give R-CO-CI3. Now, a hydroxide ion forms a bond with the carbonyl carbon. This leads to the reformation of the carbonyl group and the elimination of the CI3- anion. An R-COOH group is also formed. The carboxylic acid group and the basic CI3- ion neutralize each other. Thus the iodoform is precipitated. The mechanism for this reaction is illustrated below:Thus, the pale yellow precipitate of iodoform is formed, which can be identified by its characteristic “antiseptic” smell. The presence of the methyl ketone is confirmed. The iodoform test is a very useful method to identify the presence of these methyl ketones or acetaldehyde in an unknown compound.Which type of alcohol gives iodoform test?The only primary alcohol that provides the triiodomethane (iodoform) reaction is ethanol. If ‘R’ is a category of hydrocarbons, you have a secondary alcohol. This answer is provided by tonnes of secondary alcohols, but those that do all have a methyl group with the -OH group attached to the carbon.What does iodoform test indicate?The iodoform test reveals the presence of an aldehyde or ketone in which a methyl group is one of the groups immediately connected to the carbonyl carbon. Such a ketone is referred to as methyl ketone. The unknown is allowed to react with a mixture of excess iodine and excess hydroxide in the iodoform assay.What is iodoform test used for?The methyl ketone reaction of iodine and base is so reliable that the iodoform test (the appearance of a yellow precipitate) is used to test for methyl ketone presence. This is also the case while searching for alpha-position sensitive secondary alcohols containing at least one methyl group.How do you do iodoform test?For 3 ml of water and 10 drops of KI / I2 solution (a dark purple-brown solution), three drops of the compound to be EVALUATED are applied. Until the dark colour of the solution DISAPPEARS to pink, 10 percent NaOH solution is applied dropwise.Which alcohol gives HALOFORM test?Methyl ketones and secondary alcohols oxidizable to methyl ketones, such as isopropanol, are commonly limited by substrates. Ethanol and acetaldehyde, respectively, are the only main alcohol and aldehyde to undergo this reaction. The haloform reaction is also given by 1,3-Diketones like acetylacetone.

1 gExplanation:MOLARITY of DIBASIC acidM= 200ω × 1001000 N=M×2→ dibasic acid101 = 200ω × 1001000 ×2ω= 10001000 ω=1gmSo , CORRECT ANSWER is 1G

i THINK the ANSWER is OPTION C

Nitrogen:The seventh element of the periodic table between carbon and OXYGEN is Nitrogen.It’s an important part of amino acids.Around eighty percent of the Earth’s atmosphere comprises nitrogen gas.It has no colour, mostly diatomic non metal gas along with odourless and colourless in nature.Since it has five ELECTRONS in its outer SHELL, most of its compounds are trivalent.It is a constituent of all living tissues. Since it is a component of DNA and part of a genetic code, it is an essential element of life.It is found in nitrates and nitrites in soil and water.Metallic Oxide:Metal oxides are crystalline solids that contain a metal cation and an oxide anion.They typically react with water to form bases or with acids to form salts.The alkali metals and alkaline earth metals form three different types of BINARY oxygen compounds:1. Oxides, containing oxide ions, O²-,2. Peroxides, containing peroxide ions, O²²−, which contain oxygen-oxygen covalent single bonds, and3. Superoxides, containing superoxide ions, O²−, which also have oxygen-oxygen covalent bonds but with one fewer negative charge than peroxide ions.Alkali metals (which have a +1 oxidation state) form oxides, M²O, peroxides, M²O², and superoxides, MO². (M represents a metal atom.) The alkaline earth metals (with a +2 oxidation state) form only oxides, MO, and peroxides, MO².All the alkali metal oxides can be prepared by heating the corresponding metal nitrate with the elemental metal.2MNO³ + 10M + heat → 6M²O + N2A general preparation of the alkaline earth oxides involves heating the metal carbonates.Molten Sulphur:Sulfur burns with a blue flame, concomitant with formation of sulfur dioxide, NOTABLE for its peculiar suffocating odor.Sulfur is insoluble in water but soluble in carbon disulfide and, to a lesser extent, in other nonpolar organic solvents, such as benzene and toluene.The first and the second ionization energies of sulfur are 999.6 and 2252 kJ/mol, respectively.Despite such figures, S2+ is rare, with S+4 and S6+ being more common.The fourth and sixth ionization energies are 4556 and 8495.8 kJ/mol.The magnitude of the figures is caused by electron transfer between orbitals; these states are only stable with strong oxidants such as fluorine, oxygen, and chlorine.

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RustExplanation:If metals are ADDED to salt and WATER they will GAIN rust in the solution after some days.

ionic COMPOUND...EXPLANATION:Hope this MAY HELP you.....

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what are the reactants of 2-methylbutyl butanoateMethyl butyrate, also KNOWN under the systematic name methyl butanoate, is the methyl ester of butyric acid. Like most esters, it has a fruity ODOR, in this case resembling APPLES or pineapples. At room temperature, it is a colorless liquid with low solubility in water, upon which it floats to form an OILY layer.

what is the question?Explanation:just write ur doubts that U wanna CLEAR out we will try to help u.

a positively charged ion, i.e. ONE that would be attracted to the cathode in electrolysis.                                            PLZ MARK as bainiest

tion:Atoms are the basic building blocks of ORDINARY matter. Atoms can join together to form MOLECULES, which in TURN form most of the objects around you.Atoms are composed of particles CALLED protons, electrons and neutrons. Protons carry a positive electrical charge, electrons carry a negative electrical charge and neutrons carry no electrical charge at all. The protons and neutrons cluster together in the central part of the atom, called the nucleus

Option C is correctExplanation:First ,CALCULATE the number of moles of NAOH present in 5 grams. The molar mass of NaOH is 40 g/mol.Number of moles of NaOH in 5 GRAM = 405 =0.125 moles.The moles of HCl needed = moles of NaOHM 1 V 1 =M 2V 20.25×V 1=0.125×1000V1 =0.250.125×1000 =500 mLOption C is correct.

1, TRUE 2, falseExplanation:PLZ! FOLLOW me and MARK me BRAINLIEST plz!!

Metals are the elements which exhibit the highest degree of metallic behaviour is known as metals, on the contrary Nonmetals are such elements which do not possess any metallic behaviour, and Metalloids are those elements, that possess some of the properties like metal, while some like nonmetal.Metals are placed on the left side of the PERIODIC table, and Nonmetals are placed on the right side of the periodic table and metalloids are placed in the middle of the periodic table.Metals are located in s, p, d, and f blocks in the periodic table, though nonmetals are located in s and p blocks and metalloids are located in p block of the periodic table.Metals have a shiny appearance, and nonmetals have a dull appearance; however, metalloids have a shiny and dull appearance. Thermal and electrical conductivity is high in metals, low in nonmetals, and it is good though is less than metals in metalloids.Metals have low electronegativity as compare to nonmetals, but metalloids are at an intermediate stage that possesses neither the too high or too low value of electronegativity.Metals show DUCTILITY and malleability, but nonmetals and metalloids do not DISPLAY this property.Names of few metals are Lithium, Sodium, CALCIUM, Magnesium, Barium, Lead, Indium, Bismuth, Iron, Copper, Zinc, Nickel, etc. On the other hand Iodine, Bromine, Helium, Neon, ARGON, Krypton, Sulfur, Phosphorous, etc., are the some of the nonmetals, whereas Arsenic, Tellurium, Antimony, Polonium, Tennessine, etc., are some metalloids.ConclusionIn this article, we studied the metals, nonmetals and metalloids and how their physical, as well as chemical properties, differ from each other. Here we focused on some examples like hydrogen which may behave like metals as well as nonmetals. All the elements are being displayed in the periodic table.

Hydrogen peroxide is used to restore the colour of OLD OIL painting containing lead oxide. WRITE a balanced equation for the reaction that TAKES place in this process.

5643*0.0635) / (2.563*12.5) = x ;LOG [(0.5643*0.0635) / (2.563*12.5)] = log (x);log [0.5643 * 0.0635] - log [2.563 * 12.5] = log (x);[log 0.5643 + log 0.0635] - [log 2.563 + log 12.5] = log (x);TAKING values of the respective logarithms,[ -0.2495 + ( -1.1972 ) ] - [ 0.4087 + 1.0969 ] = log (x);[ -1.4467 ] - [ 1.5056 ] = log (x);[ -2.9523 ] = log (x);Taking inv. logarithm ,x = 0.0011.Using a calculator and CALCULATING the EXACT value ,x = 0.001118472...Hope that helps !❤FØŁŁØW MƏ ❤✌

(a) MOLAR mass of NH3 = 17 amu. ● Explanation - Before we start calculating, I'd like to write down atomix masses of relevant individual elements - (a) NH3 - Molar mass of NH3 = 14 + 3×1. (B) CH3-COOH - Molar mass of CH3-COOH = 2×12 + 4×1 + 2×16. (c) C2H5-OH - Molar mass of C2H5-OH = 2×12 + 6×1 + 16.Explanation:Pls mark me as brainliest and CLICK the thanks icon pls :)

what is QUESTION question

cycles tend to move more RAPIDLY than do sedimentary ones and to adjust more READILY to CHANGES in the biosphere because of the LARGE atmospheric reservoir.HOPING THIS WILL HELP YOU PLZ MARK AS BRAINLIEST AND FOLLOW ME

मूलानुपाती सूत्र / empirical formula) वह सूत्र है जो बताता है कि उस यौगिक के अणु में कौन-कौन से परमाणु हैं तथा उन परमाणुओं की संख्या का सरलतम अनुपात क्या है। EXPLANATION:HOPE it helps ❤✌have a nice DAY MARK me as Brainlest ❤

Of COURSE MOLARITY. HOPE it HELPS.

Exothermic reactions are reactions or processes that release energy, usually in the form of heat or light. In an exothermic reaction, energy is released because the TOTAL energy of the products is less than the total energy of the reactants.When quick lime reacts with WATER to form slaked lime , it releases a LOT of energy . Endothermic reactions are reactions that require external energy, usually in the form of heat, for the reaction to proceed. Since endothermic reactions draw in heat from their surroundings, they TEND to cause their environments to cool down. They are also generally non-spontaneous, since endothermic reactions yield products that are HIGHER in energy than the reactants. When hydrogen reacts with iodine to form hydrogen iodide , it absorbs a lot of energy .

tion:Mixtures do not merge with the other SUBSTANCES atoms in fact they are just placed in a solvent while compounds do show chemical bonding between atoms. There are so many types of mixtures in our daily activities. This is the disadvantage..Advantages of Mixturesextend the GROWING season of a pasture,improve the quality of forage,REDUCE NITROGEN fertilizer requirements because of the legume's nitrogen fixation capacities,PROVE more adaptable for a wider range of conditions,improve flexibility to survive environmental conditions.Hope it helps...Please mark it brainliest....

In the periodic table of the elements, a PERIOD indicates the value of the principal quantum number (n) for the outermost shells. Each period BEGINS with the filling of principal quantum number (n). The value of n for the sixth period is 6.Jul HOPE IT WILL HELP YOUPLEASE mark me as brilliant please please please please

we can READ EQUATION in THREE WAYS

the CORRECT ANSWER is 80ppm.

In order to live on land, amphibians REPLACED gills with another respiratory ORGAN, the lungs. Other adaptations include: Skin that prevents loss of water . Eyelids that ALLOW them to ADAPT to vision outside of the water.An eardrum developed to separate the external ear from the middle ear.Explanation:hope it helps you please mark me as BRAINLIST

The longest chain has 6 CARBON atoms. At C-2 position DOUBLE bond is present, and at C-3 position ETHYL group is present. Hence, the IUPAC name is 3-ethyl-2-hexene.hope it will help you plz mark me as brainlist ❤❤

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