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5901.

Example 4 : Find a relation between x and y such that the point (x . yis equidistantfrom the points (7, 1) and (3, 5).

Answer»

let A(x,y) B(7,1) C(3,5) given that, A is equidistant from B and C distance of A from B and C are equal AC = BA

5902.

The wave length of light is 7000 A. The no. of photons required to provide20 J of energy is approximately.

Answer»
5903.

Explain following:(i) Imulsion(ii) Antinarcotic(ii) Dialysis(iv) Enzyme

Answer»

Anemulsionis amixtureof two or moreliquidsthat are normallyimmiscible(unmixable or unblendable).”

In medicine, dialysis is the process of removing excess water, solutes, and toxins from the blood in people whose kidneys can no longer perform these functions naturally. This is referred to as renal replacement therapy.

Anti-narcotics definition is - acting against or opposing illicit drugs and their use and distribution. How to use anti-narcotics in a sentence.

Enzymes are macromolecular biological catalysts. Enzymes accelerate chemical reactions. The molecules upon which enzymes may act are called substrates and the enzyme converts the substrates into different molecules known as products

5904.

. List two precautions you will observe while finding the melting point of ice

Answer»

The ice should be stirred regularly to keep the temperature constant all over.

Keep the keep straight to the thermometer.

The bulb of thermometer should be kept in between the ice cube.

5905.

write in details for different tests of ketones and aldehydes

Answer»

2,4-DNP Test for Aldehydes and Ketones

Aldehyde or Ketone

StandardsCyclohexanone, Benzophenone, and Benzaldehyde

ProcedureAdd a solution of 1 or 2 drops or 30 mg of unknown in 2 mL of 95% ethanol to 3 mL of 2,4-dinitrophenylhydrazine reagent. Shake vigorously, and, if no precipitate forms immediately, allow the solution to stand for 15 minutes.The 2,4-dinitrophenylhydrazine reagent will already be prepared for you.

Positive testFormation of a precipitate is a positive test.

Complications

Some ketones give oils which will not solidify.

Some allylic alcohols are oxidized by the reagent to aldehydes and give a positive test.

Some alcohols, if not purified, may contain aldehyde or ketone impurities.

Tollen’s Test for Aldehydes

Aldehyde

StandardsCyclohexanone and Benzaldehyde

ProcedureAdd one drop or a few crystals of unknown to 1 mL of the freshly prepared Tollens reagent. Gentle heating can be employed if no reaction is immediately observed.Tollens reagent:Into a test tube which has been cleaned with 3M sodium hydroxide, place 2 mL of 0.2 M silver nitrate solution, and add a drop of 3M sodium hydroxide. Add 2.8% ammonia solution, drop by drop, with constant shaking, until almost all of the precipitate of silver oxide dissolves. Don't use more than 3 mL of ammonia. Then dilute the entire solution to a final volume of 10 mL with water.

Positive TestFormation of silver mirror or a black precipitate is a positive test.

Complications

The test tube must be clean and oil-free if a silver mirror is to be observed.

Easily oxidized compounds give a positive test. For example: aromatic amine and some phenols.

Cleaning upPlace all solutions used in this experiment in an appropriate waste container.

Jones (Chromic Acid) Oxidation Test for Aldehydes

Aldehydes

StandardsCyclohexanone and Benzaldehyde

ProcedureDissolve 10 mg or 2 drops of the unknown in 1 mL of pure acetone in a test tube and add to the solution 1 small drop of Jones reagent (chronic acid in sulfuric acid). A positive test is marked by the formation of a green color within 5 seconds upon addition of the orange-yellow reagent to a primary or secondary alcohol. Aldehydes also give a positive test, but tertiary alcohols do not.The Jones reagent will already be prepared for you.

Positive TestA positive test for aldehydes and primary or secondary alcohols consists in the production of an opaque suspension with a green to blue color. Tertiary alcohols give no visible reaction within 2 seconds, the solution remaining orange in color. Disregard any changes after 15 seconds.

Complications

Aldehydes are better characterized in other ways. The color usually develops in 5-15 seconds.

Cleaning upPlace the test solution in the appropriate waste container.

Iodoform Test for Methyl Ketones

Ketone

StandardAcetone

ProcedureIf the substance to be tested is water soluble, dissolve 4 drops of a liquid or an estimated 50 mg of a solid in 2 mL of water in a large test tube. Add 2 mL of 3 M sodium hydroxide and then slowly add 3 mL of the iodine solution. Stopper the test tube and shake vigorously. A positive test will result in the brown color of the reagent disappearing and the yellow iodoform solid precipitating out of solution. If the substance to be tested is insoluble in water, dissolve it in 2 mL of 1,2-dimethoxyethane, proceed as above, and at the end dilute with 10 mL of water.

Positive TestFormation of solid iodoform (yellow) is a positive test. (Iodoform can be recognized by its odor and yellow color and, more securely, from the melting point 119o-123oC).

ComplicationsTest will not be positive if the R group is a di-ortho substituted aryl group

Cleaning UpPlace solutions in the appropriate waste container.

TestsforAldehydesandKetones

2,4-DNPTestforAldehydesandKetones.

Tollen'sTestforAldehydes.

Jones (Chromic Acid) OxidationTestforAldehydes.

IodoformTestfor MethylKetones.

5906.

1. While doing an activity of burning ofmagnesium ribbon in air, list two precautions thatshould be followed by a student stating the reasons(2014-AI6KLXY)for each.

Answer»

magnesium ribbon should be cleaned with Sandpaper because the magnesium is found to form oxide when exposed to atmosphere.

the magnesium ribbon should be held by a pair of tongs to avoid burning of hand

one should wear sunglasses to protect the eyes from dazzling heat produced during the burning of magnesium ribbon

5907.

1. While doing an activity of burning ofmagnesium ribbon in air, list two precautions thatshould be followed by a student stating the reasonsfor each.(2014-AI6KLXY)

Answer»

the main precautions should be1) use of pair of tongs to hold a magnesium ribbon and avoid holding it by hand as it may cause burn.

2) wear sunglasses of performing the experiment because of a dazzling heat produced by the magnesium ribbon burning can affect the eyes.

1- As the magnesium ribbon is exposed to air,a thin layer of magnesium oxide is formed due to which incomplete oxidation takes place and burning is slowed down.Thus,the magnesium ribbon is rubbed with sand paper to remove the oxide layer.

2- We should always be very careful while dealing with the flame of bunsen burner as a slight carelessness can lead to serious problems because of the presence of various chemicals in the lab.

one more point could be1- Use of sunglasses to protect the eyes from a dazzling flame produced during the buring of magnesium ribbon.

5908.

48. A glass of juice contains 9 g of glucose. The number ofcarbon atoms in the glass of juice is(1) 1.806981023 (2) 1.5012×1023(3) 2.5012 x 10 (4)

Answer»
5909.

L (c) Most metals do not react with base but zinc metal does. Suggest a reason.

Answer»

Mostmetals donotreact with bases but zinc metal doesbecause it is amphoteric. That means itreactswith acids as well asbases.zinc acts as both acid and base because of its electronic confugration and it is d-block element, so it is amphoteric. so it act as acid when react with base which other metals cannot.

5910.

22 AR m/w/;')y bitrewn I owd K पल %(-,//wwra\a e (_qu"n Q\)a Cu(NOq Y (g) === 2 L. Q) + 4N fl) # (‘}%)’

Answer»

i didnt undrestood

5911.

Which organs digest the food out?

Answer»

Ans :- In the mouth, stomach, and small intestine, the mucosa contains tiny glands thatproducejuices to help digest food. Two solid organs, theliverand the pancreas,producedigestive juices that reach the intestine through small tubes.

5912.

09.120(4)10.5x10-2*13. 2NOBr(8) 2NO(g)+ Br, (g) If nitrosylbromide (NOBr) is 40% dissociate at certaintemperature and a total pressure of 0.3 atm.K, for the reaction :2NO(g) + Br, (g) 2 NOBr(g) is(1) 45(2) 25(3) 0.022(4) 0.25

Answer»

4) 0.25 is the correct answer

2. is correct answer

4) 0.25 is the correct answer also

4) 0.25 is the right answer of the following

5913.

The pH of distilled water?

Answer»

it is 7 ph at 25 degree centigrade. neither acidic nor alkaline.

5914.

73The bond angles of NH3, NHİ and NHare in the order

Answer»
5915.

Calculate the molarity ofis dissolved in soml ofSolution when sg of Naoh.distilled water

Answer»

2.5 mol/kg is the correct answer of the given question

5916.

25. When a sample of baking soda is stronglylenited in a crucible, it suffered a loss in weightof 3.1g. The mass of baking soda is1) 16,8 g2) 8.4g3) 1164) 4.2g

Answer»

The reaction is:

2NaHCO3 ----------> Na2CO3 + CO2 + H2O

=> 2* 84 = 168 gm.

CO2 and H2O => 44 + 18 => 62 gm.

Just divide them we get,

=> 168/62 = 8.4 gm approx.

5917.

(b) What is the unique property of baking soda by which it uses in prepration of baking powder

Answer»

Baking soda's alkalinitycausesit to react with acids. This propertymakessodium bicarbonate useful for baking, cleaning and deodorizing. Many bad odors are caused by acids, and baking soda neutralizes these odors when it reacts with them

5918.

when liquid is converted into solid the latent heat is....

Answer»

When a liquid is converted into solid, the latent heat which means the hidden heat is absorbed by the solid

5919.

How is baking soda be converted into baking powd2er

Answer»

Baking soda can be converted into baking powder by adding tartaric acid and starch.NaHCO3 + H+ → Na+ + CO2 + H2O

5920.

7) How will you calculate howmany moles of glucose present in 320mL of 5.0 M of glucose solution?

Answer»

First step: Convert the volume from millilitres to litres

320 X (1 litre/1000mL) = 0.320 L solutionSecond use the formula = M x V

= 5.0 moles glucose/ litre solution X 0.320 L solution

= 1.6 moles of glucose present in 320mL of solution

5921.

(1)Fill in the blanks.After complete oxidation of glucose molecules.number of ATP molecules are formed.

Answer»

During conversion of glucose to 2 molecules of pyruuvic acid, a total of 8 molecules of ATP are generatedtwo molecules of pyruvic acid when converted into two molecules of active acetate, yield a total of 6 molecules of ATP.Removal of 2′C’ as CO2 [i.e. one molecule of active acetate] via Kreb’s cycle yiels 12 molecules of ATP. Thus 2 active acetate molecules [one each from one pyruvate molecule] yields 24 molecules of ATP

Total = 8+6+24 = 38 molecules of ATP are gained when a glucose molecule is completely oxidized to CO2 and H2O.

5922.

CH3OH.

Answer»

CH3-OH is methyl alcohol or methanol

The hybridisation of C in it is Sp3

5923.

Calculate the molecular massesof H2, O2, Cl2, CO2,. CH4, C2H6,C2H4, NH3,CH3OH.

Answer»
5924.

B ..g ot I p&,,,gfi

Answer»

किसी भी विलयन का pH मान एक संख्या है जो विलयन की अम्लता और क्षारकता को दर्शाता है| किसी भी विलयन का pH मान संख्यात्मक रूप में द्रवीभूत हाइड्रोजन आयन (H+) के विलोम के लघुगणक के बराबर होता है। इसलिए किसी विलयन के pH को हाइड्रोजन आयन के ऋणात्मक लघुगणक के रूप में जाना जाता है। इस लेख में हम pH स्केल पर आधारित वस्तुनिष्ठ प्रश्न दे रहे हैं जिससे आपको विभिन्न परीक्षाओं की तैयारी करने में मदद मिलेगी, साथ ही pH स्केल की अवधारणा के संबंध में आपकी समझ और भी विकसित होगी|

5925.

You Balase the following ofuation1 Cop Hq -> CH3OH

Answer»

The balanced equation is

CO+2H2---------->CH3OH

5926.

!)Why is ionization energy of nitrogen greater than that of oxveen?ot haye P- orbital'?hve P orbital?

Answer»

Ionisation energy could simply be defined as the energy required to remove the valence electron of an element.

While nitrogen has one electron occupying each of the threeporbitals in the 2ndsublevel, oxygen has two orbitals occupied by only one electron but one orbital containing a pair of electrons. The greater electron-electron repulsion experienced by these 2pelectrons allows for less energy to be needed to remove one of these. Therefore,IE1 for oxygen is less than nitrogen.

5927.

4. Solve problems :A. What is the ratio of molecules in 1 moleof NH, and 1 mole of HNO,Ans - 1:1

Answer»

1:1 is the answer for your question

in NH3=1:3in hno41:1

In nh3the ratio is 1:3and in HNO4the ratio is 1:1

Explanation:

1 mole of nh3. = 14+7×3 = 65

1 mole of HNO3 =1+14+16×3=63

Hense ratio are 65:63

1:1 is the right answer

1:1 is the right answer

no. of molecules in one mole = 6.023 × 10^23 irrespective of compoundhence, ratio = 1:1

in NH=1:3in hno41:1

1:1 The right answer

1:1 will be the right answer

1:1 is the answer for your question

1 : 1 is the right answer

To measure the amount of different chemical compounds we use a SI unit which is known as the mole.

And according to the definition of mole we came to know that one mole of any substance contain a universal amount of molecules which is also known as the Avogadro's number. (6.023×10²³)

So the molecule number ratio of one mole amount of different compounds will be always 1:1 because both sides are always universally equal.

1:1 is answer your questions

As the concept of avagadro number ,every one mole contain same number of molecules

1:1 is answer for your question

1:1 is the right answer

hope this will help you like my answer

1:1is the best answer

I think 1 • 1 is the answer

1:1 is my answer of the above question

The ratio of molecules in 1 mole of NH3 and 1mole of HNO3 is 1:1. Explanation: Mole is a Sl unitwhich we use to measure the amount of thechemical compounds. And according to thedefinition of mole we came to know that aconstant amount of molecules are present in onemole amount of any chemical compound.

1mole NH3=6.023*10^231mole HNO3=6.023*10^23so ratio is 1:1

ans =1.1 is correct answer

1: 1is correct answer of that statement

i don't know about this statement

ratio between 1 mole NH3 and 1 mole HNO3 is 1 :1

1 : 1 is the right answer

1:1 is right answer of this

1 mole of NH3= 6.022×10^23 molecules

1 mole of HNO3= 6.022 ×10^23 molecules

so ratio will be 1:1

this ratio is approximately 1:1

The ratio of molecules in 1 mole of nh3 and 1 mole of hno3 is 1:1

according to Avogadro's law under similar conditions of temperature and pressure the number of molecules present in equal volume of all gases are equal . show the number of molecules present in 1 mole of NH3 is equal to the number of molecules present in 1 mole of Asian o3 the required ratio of molecules is 1 :1 .

as we can say thatthe ratio of NH3 is1:3..and the ratio of HNO4 is1:1

1: 1 is the best answer

1 mole of NH3=6.022×10^23 molecules 1 mole of HNO3=6.022×10^23 molecules so the ratio is 1:1 (ans)

1:1 is correct answer hope u like it

Ratio of NH3:HNO3=1:1 IS THE ANSWER

the answer is 1:1 the required ratio is 1:1

1:1 is the correct answer to this question .

1:1 is the best answer

1:1

Theratio of molecules in 1 mole of NH3 and 1 mole of HNO3is1:1. Explanation:Moleis a SI unit which we use to measure the amount of the chemical compounds. And according to the definition ofmolewe came to know that a constant amount ofmoleculesare present inone moleamount of any chemical compound.Jul 27, 2019Answer:

1:1

Explanation:

1 mole of NH3= 6.022×10^23 molecules

1 mole of HNO3= 6.022 ×10^23 molecules

so ratio will be 1:1

1:1 is the right answer

1:1 is the for this question

1:1 is the right answer

1:1 is the right answer

1:1 is the right answer

1:1 is the right answer

well it's 1:1 as there will be same no. of molecules in one mole

1:1 is the right answer

1:1 is the ratio of the molecules as both have same no. of molecules.

1.1

1:1 is absolutely the correct answer to this question .

1:1isthe ans of your question

1:1is the answer this question

1:1 is the right answer

1:1 is the right ans.

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Your input whatisratioofmoleculesin1moleofnh3and1holeofhno3 is not yet solved by the Tiger Algebra Solver.please join ourmailing listto be notified when this and other topics are added.

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it will be 1:1 as in one mole no. of molecuoes will be same for both

1 mol of NH3 = 6.022x10^231mol of HNO3 = 6.022x10^23now their ratio is 1:1

actually the following question answer is 1:1

1:1 is the answer to these question

15:61 is the ratio of 1 MOLE OF NH3 AND 1 MOLE OF HNO3

1:1 is the correct answer for your question

1:1 is the correct answer for your question

1:1 is the correct answer

1:1 will be the right answer because every one mole contain same number of molecules .

1:1 will be the right answer because by the avagadro number , every one mole contain same number of molecules ..

According to Avogadro's Law, 1 mole of any chemical compound contains 6.023 ×10^23 molecules.So, 1 mole of NH3 : 1 mole of HNO3 6.023 × 10^23 : 6.023 × 10^23 1:1 is the answer

Both NH3 and HNO3 will not associate or dissociate,and will remain as molecules. so their molecular ratio will be 1:1

Answer:1:1.Explanations;it is due to Avogadro's number"6.022*10^23"as,if we keep ratio both sides equal universally then the ratio will always be 1:1.

1:1

Theratio of molecules in 1 mole of NH3 and 1 mole of HNO3is1:1. Explanation:Moleis a SI unit which we use to measure the amount of the chemical compounds. And according to the definition ofmolewe came to know that a constant amount ofmoleculesare present inone moleamount of any chemical compound.

1:1 is the best answer for the question

1:1 is the answer of the question

NH3=1:3HNO3=1:1 is right answer..

1:1 is the ratio of molecules in one mole

the ratio of molecule in 1 mole of NH3 and 1 mole of HNO3 = 1:1

in NH3 =1:3in hno41:1

1:1 is the right answer

1:1 is right answer for this question

answer is :-1:1please like my answer

There is 1 molecule of NH3There is 1 molecule of HNO3Ratio means divisionHence,1/1=1:1

1:1 is perfect answer for this question

Theratio of molecules in 1 mole of NH3and1 moleof HNO3 is1:1. Explanation:Moleis a SI unit which we use to measure the amount of the chemical compounds. And according to the definition ofmolewe came to know that a constant amount ofmoleculesare present inone moleamount of any chemical compound.

in NH3=1:3in HNO4=1:1

1:1is the right answer for this question

1:1 is the answer because both compounds have same nos. of molecules

1 mole of NH314+7×3=65

1 mole ofHNO31+14+16×3=63hence ratio is 63;65

The ratio of molecules in 1 mole of NH3 and 1 mole of HNO3 is 1:1.

Explanation:

Mole is a SI unit which we use to measure the amount of the chemical compounds.

And according to the definition of mole we came to know that a constant amount of molecules are present in one mole amount of any chemical compound.

And that is the Avogadro's number which is 6.023×10²³.

Now if the both side of the ratio is universally equal then the ratio will be always 1:1.

NH3=1:3in hno41:1.

1:1 is the right answer

ratio of mole in NH3 and HNO3 is 17:63

correct ans. is 1:1...........

the ratio is 16:73 for your question

1:1is the ratio of nh3 and 1mole of hno3

1:1 is the right answer

it answer is 1ratio 1

1:1 is the right answer

1:1 is right answer for your question

1:1......................

1:1.....................

1:1.....,.........,.....

the ratio of NH³ and HNO³ is 1:1

the answer for your question is 1:1

the correct answer is 12

1 mole of any compound contain N molecules , irrespective of atoms present in it .

1:1 is the answer for your question

1:3 ,1:1in NH3,in HNO4

the following question correct answer is 1:1

1:1 is the right answer

1:1 is correct answers for this as molecules in 1mol is same Equal to Avogadro's number

1:1 because of 1mole of NH3 and 1 mole of HNO3

34 will be the answers of this question

1:1 is your correct answer

1 mole of NH3= 6.022×10^23 molecules

1 mole of HNO3= 6.022 ×10^23 molecules

so ratio will be 1:1

1:1 is the right answer

1:1 is the right answer

1:1is the correct answer

1:1 is correct answer of this question

pgle ans niche likeslikhahao

1:1 is right answerplease like

1:1 is the right answer

the ratio of molecules in 1 mole amonia and 1 mole nitric acid is...1:1

The ratio of molecules in 1 mole of NH3 and 1 mole of HNO3 is 1:1. Solution :-

1 mole of NH3 = 6.022×10^23 molecules 1 mole of HNO3 = 6.022×10^23 molecules So, the ratio is 1:1.

The answer for this question is 1:1 .

1:1 is the right answer

1:3 For NH³and 1:1 for HNO⁴ is the best answer

1:1 is the answer I think............

1:1 is the right answer

Answer1·1Explanation: 1 mole of NH3 = 6·022×10^23 molecules1 mole of NHO3 = 6·22×10^23 moleculesSo ratio, will be 1·1

a mole has Avogadro number ed molecolulesso the ratio will be 1:1

yes answer is correct 1:1

in NH3=1:3in hno41:1

answer is 1:1 as given is correct

1:1 is the correct answer

Theratio of molecules in 1 mole of NH3 and 1 mole of HNO3is1:1. Explanation:Moleis a SI unit which we use to measure the amount of the chemical compounds

1:1 is the right answer

1:1 is the right answer

1:1is the right answer

in NH3 1:3 &in HNO31:1

the answer and ratio is 1:1

your question ratio will be 1ः1

1 moleNh3=6.022*10ka power 23 molecules and1mole Hno3=6.022*10ka power23 moleculesisliye Nh3 and Hno3 Ka ratio 1:1

1.1 is the correct answer

1:1 is the best answer

1 mole of NH3= 6.022×10^23 molecules

1 mole of HNO3= 6.022 ×10^23 molecules

so ratio will be 1:1

as there amount is given in mole, then their no. of molecules will be same which is a avogadro's no.=6.022*10^23

1:1 is the best answer

1:1h ratio NH3aur HNO3

1:1 is correct answer o

1:1 is the right answer

1:1 is the ratio of both tge molecules

1:1 is the answer of your question

1:1 is the best answee

1:1 is a right answer plz like my answer

1 mole =6.002×10^231 mole of HNO3=6. 002×10^23so ratio will be 1:1 is right ansewer

to measure the amount of different chemical compound we use a SI unit which is known as the whole.

And according to the definition of mole we came to know that one mole of any substance contain a universal amount of mole cules . which is also known as the avogardo's number.

So, the molecular number ratio of one mole amount of different compound will be always 1:1 because both sides are always universally equal.

the ratio of one molecules in 1 mole of nh3 and 1mole of hno3 is 1:1 mole is si unit which we use to measure the amount of the chemical compounds

1:1is the ratio of given molecule

1:1 is the right answer

1:1 is the best correct

the ratio of molecules in 1 molebof NH3 and 1 mole of HNO3 is 1:1correct answer for this question

ans is 1:1, example 1 mole of NH3=6.022×10^23 and 1mole of HNO3=6.022×10^23 molecules, so ratio will be 1:1

1:1 is the correct answer

1:1 is the correct answer

1:1 is the correct answer

answer is the ratio of 1:1

No. of molecules =6.023×10^23 =1:1

answer is 1:1 because in one mole of any compound all the ratio of the molecules is same as it is only a fixed number so it cannot be changed in any ratio

Explanation:

1 mole of NH3= 6.022×10^23 molecules

1 mole of HNO3= 6.022 ×10^23 molecules

so ratio will be 1:1

Explanation:

1 mole of NH3= 6.022×10^23 molecules

1 mole of HNO3= 6.022 ×10^23 molecules

so ratio will be 1:1

Explanation:

1 mole of NH3= 6.022×10^23 molecules

1 mole of HNO3= 6.022 ×10^23 molecules

so ratio will be 1:1

Explanation:

1 mole of NH3= 6.022×10^23 molecules

1 mole of HNO3= 6.022 ×10^23 molecules

so ratio will be 1:1

Explanation:

1 mole of NH3= 6.022×10^23 molecules

1 mole of HNO3= 6.022 ×10^23 molecules

so ratio will be 1:1

1:1:1 is the right answer

1:1 is correct answer

Answer: Theratio of molecules in 1 mole of NH3and1 moleofHNO3is1:1. Explanation:Moleis a SI unit which we use to measure the amount of the chemical compounds

5928.

03. Assuming the velocity to be the same, which of thefollowing is associated with the smallest de Brogliewavelength?(a) an electron(c) an α-particle(d) all will have the same value of wavelength(b) a proton

Answer»

m is mass, v is velocity, K is kinetic energy, p is momentum and λ is wavelength. Electrons have the smallest m, so they have the greatest λ. Alpha particles have the greatest m, so they have the smallest λ.

Hence Option C is correct.

Which option is correct?

5929.

BURU IULIUNC81. The de-Broglie wavelength of an electron accelerated by an electric field of volts is given by(a)(b)2-122 - 23m (d)ale

Answer»

c is the right answer

d is the right answer

d is correct answer

5930.

4. Solve problems :A. What is the ratio of molecules in 1 moleof NH, and 1 mole of HNO.

Answer»

The ratio between 1 mole of NH3 And 1 mole of HNO3 is 1:1

ratio must be 1:1 as 1mole of NH3 contain Avogadro no of atoms and 1 mole of HNO3 also contain same no of atom

5931.

Define ionization energy of an atom.

Answer»

The energy is required to remove the valance electron of a atom is called ionisation energy of atom

Ionization energyis theenergyrequired to remove an electron from a gaseousatomor ion. The first or initialionization energyor Eiof anatomor molecule is theenergyrequired to remove one mole ofelectronsfrom one mole of isolated gaseousatomsor ions.

Ionization energy is the quantity of energy that an isolated, gaseous atom in the ground electronic state must absorb to discharge an electron, resulting in a cation. This energy is usually expressed in kJ/mol, or the amount of energy it takes for all the atoms in a mole to lose one electron each.

Ionization energyis theenergyrequired to remove an electron from a gaseousatomor ion. The first or initialionization energyor Eiof anatomor molecule is theenergyrequired to remove one mole ofelectronsfrom one mole of isolated gaseousatomsor ions.

Ionization energy is the quantity of energy that an isolated, gaseous atom in the ground electronic state must absorb to discharge an electron, resulting in a cation. This energy is usually expressed in kJ/mol, or the amount of energy it takes for all the atoms in a mole to lose one electron each.

the ionisation energy is the amount of energy required to remove the most loosely bound electron which is at Valence shell

It is the minimum amount of energy required to remove electro from gaseous atom.

5932.

Explain, why is there a phenomenalionization enthalpy from carbon to silicondecrease in 30)

Answer»
5933.

1,装hich among N, O and F has lowest ionization enthalpy?

Answer»

To become stable, bothfluorineand oxygen must achieve a full octet, or set of 8 electrons in their outer shells. Therefore, it is more difficult to remove an electron fromfluorine thanfrom oxygen, giving it thehigher ionization energy.Ans:- oxygen

5934.

26. The density of solid AgCl is 5.56 g/cc. The solid is made up of a cubic array ofalternate Ag and cl ions at a spacing of 2.773 Á between centres. From thesedata calculate the Avogadro constant.(6-04 x 10")

Answer»

agcl=5.56g/cc2.773åavagadro constant=6.04×10^23

agcl=5.56g/cc2.773°aavagadro constant=6.04×10^23

agcl=5.56g/ccept2.773°aavagadro cinstant=6.04×10🔼23. please like my answer

agcl=5.56g/cc2.773°aavagadro constant=6.04×10^23

agcl=5.56g/cc2.773åavagadro constant=6.04×10^23

all=5.56g/cc2.773a°avagadra constant=6.04x10^23

agcl=5.56g/ccept2.773°aavagadro constant=7.04×10∆23.

agcl=5.56g/ccept2.773°aavagadro constant=7.04×10∆23.

agcl=5.56g/ccept2.773°aavagadro constant =7.04×10∆23

5935.

4.10 Give reasonsi) Second ionization ethalpy is greater than firstionization enthalpy.

Answer»

The second ionization energy of any element will be higher than its first ionization energy in the way that the first electron is being removed from a neutral atom and the 2nd electron is being removed from a positively charged ion that is already electron deficient, as already 1 electron is being removed so the effective nuclear charge will definitely going to increase , which causes a strong attraction between the nucleus and the outermost electron. So the second ionization energy is higher than that of first ionization energy of an element.

5936.

hiingreasing order of ionization enthalpy30-22a, Al, C

Answer»

Al, Na, C, O, N, F is the increasing order of IE

5937.

Example 7.23Flowing equilibrium is strudied by taking 1 mole of N, and 3 moles of H2 in a ILflask at a given temperaturestudied by taking 1 mole of N2 and 3 moles of H2N2(g) +3H2() 2NH(g)s(e) formed at equilibrium is neutralised by 200 ml of IM HCI. Calculate equilibrium constant.

Answer»

N2 + 3H2 ---------> 2NH3

Initial 1 3 0 P1=4 atm ∑n = 4

Eqbm 1-x 3-3x 2x P2=3 atm ∑n = 4-2x

Pα n

P1/P2 = n1/n2

4/3 = 4/(4-2x)

x= 0.5

PN2= 0.5, PH2= 1.5, PNH3= 1

K = (PNH3)2/ (PN2) (PH2)^3

K= 1 / (0.5) (1.5)^3

the equilibrium constant for dissociation of NH3 is K = (0.5) (1.5)^3

5938.

(A) 12 atmStarting with one mole of nitrogen and 3 moles of hydrogen, at equilibrium 50% of each had reactedaccording to the reaction :N, (9)+ 3H2(9)2NH, (g)If the equilibrium pressure is P, the partial pressure of hydrogen at equilibrium would be:(A) P/2(B) P/3(C) P/4(D) P/6For which of the following equilibria, is KK

Answer»

hence as ntotal =3pressure will be P/3

5939.

9. State and explain Avogadro's law. Explain howatom of an element is distinguished frommolecule?

Answer»

This is a statement that, under the same conditions of temperature and pressure, equal volumes of different gases contain an equal number of molecules (called Avogadro's number). First proposed by the Italian scientist Amedeo Avogadro (1776 - 1856) in 1811, it became accepted c. 1860. From the law, it follows that the volume occupied by one mole of gas (at standard conditions of 32 °F [0 °C] and 1 atmosphere of pressure) is the same for all gases (0.791 cubic feet [22.4 litres]).

Atoms are indivisible particles that cannot be destroyed or created by any chemical changes. Two or more than two atoms of same elements or different elements combine to form a molecule. If atoms of same elements combine, they give rise to the formation of a molecule of an element. If atoms of different elements combine, a molecule of compound is formed.

Ans

5940.

Ionic compoiunds are soluble in water because

Answer»

Ionic compounds dissolve in waterif the energy given off when theionsinteract withwatermolecules compensates for the energy needed to break theionicbonds in the solid and the energy required to separate thewatermolecules so that theionscan be inserted into solution.

mcq questions

maQ s hai

Hydrogen Bonding can be the answer.

5941.

a basic oxide which is soluble in water

Answer»

Sodium oxide, Na2O

5942.

3. Why is aniline soluble in aqueous HCl?

Answer»

hit like if you find it useful

5943.

and 7 electrons in their outermost shells.and R and determine their valencies.Write the molecular formula of the compound formed when P and S combine. 3Four elements P. Q. R and S belongs to the third period of the Modern PcriodicTable and have respectively 1. 3, 5Write the electronic configurations of Q

Answer»

P -- Sodium (Na) Q -- Aluminium (Al)R -- Phosphorus (P)S -- Chlorine (Cl)

1) Q -- Alatomic no: 13so, e:c is 2, 8, 3. R -- Patomic no: 17so, e:c is 2, 8, 7

2) Sodium combines with Chlorine to form SodiumChloride.NaCl

тнanĸ yoυ

5944.

10SC10' uynes omMCQ with more than one correct answer :Gases area) Highly compressiblec) Exerts pressure in all directionsb) Highly expansibled) Have low density

Answer»

all the options are correct

all are correct options

all answers are correct because gases are compressible, expansible on heating , exerts pressure in all directions and also have low density.

option a because they are less dense than other state of matter

gases have low density

all answers are correct.

all the options are correct

all the options are correct

gases have all quality of given options so all options are correct for gase

highly compressible is the answer

a and c option are right because gas has high compressible and exert pressure

all are correct answers

All the options are correct

all the options are correct

All options are correct because gases have all those 4 properties .

All the options are correct

5945.

Convert 2L of milk in to mÂş

Answer»

1 litre= 1000m^3so2 litre= 2000m^3

5946.

explain first law of thermodynamics

Answer»

The first law of thermodynamics is a version of the law of conservation of energy, adapted for thermodynamic systems. The law of conservation of energy states that the total energy of an isolated system is constant; energy can be transformed from one form to another, but can be neither created nor destroyed.

5947.

State the first law of thermodynamics. How can it be expressedmathematically ?

Answer»

The first law of thermodynamics is a version of the law of conservation of energy, adapted for thermodynamic systems. The law of conservation of energy states that the total energy of an isolated system is constant; energy can be transformed from one form to another, but can be neither created nor destroyed.

5948.

state any activity which shows that air exerts pressure

Answer»
5949.

(vapour) or chlorine ? Explain your answer69. Why is a liquid (the hydraulic fluid) used to operate the brakes in a car?all

Answer»
5950.

2.Mention the composition of washing soda.

Answer»

Sodium carbonate, Na2CO3, (also known aswashing soda,sodaash andsodacrystals) is the inorganic compound with theformulaNa2CO3and its various hydrates. All forms are white, water-soluble salts.