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50151.

Que. Write two uses of He and Neon?

Answer»

hope it will help u ❤️!!Explanation:Neon is USED in vacuum tubes, high-voltage indicators, lightning arresters, wave METER tubes, television tubes, and helium–neon LASERS. Liquefied neon is commercially used as a cryogenic refrigerant in applications not requiring the LOWER temperature range attainable with more extreme liquid helium refrigeration.plzzz mark me as brain LIST...(◠‿◕)follow me...(◍•ᴗ•◍)✧*。

50152.

Que Why Xefe6 cannot be stored in glass containere

Answer»

XeF6 is very reactive and cannot be stored in quartz or SILICA vessel because it reacts with them and FORMS an explosive compound (XEO3). Storing strong NaOH in glass vessel results in a reaction between NaOH and glass, resulting in the FORMATION of SODIUM silicate.

50153.

Suggest why the boiling point of 'B' is higher than the boiling point of 'A'.​

Answer»

Because of CHANGE in SUBSTANCE

50154.

Que. Why halogens are coloured gases and they are very reactive?

Answer»

as they are ELECTRON acceptors and gain it very easilyhopr to u LATER and pls mark as BRAINLIEST MATE I

50155.

The hydrocarbon C17H36 can be cracked. Which compound is the least likely to be produced in this reaction? A C3H8 B C4H8 C C8H16 D C16H34

Answer»

A)C3H8 ✔✔✔thanks MATE

50156.

Que. Write the reactions of SO2 with Cl2and k2Cr2O7?

Answer» HIPE to the NUMBER of DEVICES ALLOWED by the WAY
50157.

57) At a particular temperature, the vapour pressures of two liquids A and B are respectively 120 and 180 mm of mercury.If 2 moles of A and 3 moles of B are mixed to form an idealsolution, the vapour pressure of the solution at the sametemperature will be (in mm of mercury)a) 156 b) 145 c) 150 d) 108​

Answer»

YOUR ANS.ACC. TO Raoult LAW FOR LIQUID - LIQUID:-THE TOTAL PRESSURE OF SOLU:-P = partial pressure of A+ partial pressure of Bpartial pressure of A = p°A(MOLE frac. of A)= 120(2/5 ) = 48mm of hgpartial pressure of B = 108mmof hgso, total pressure p = 108+48 = 156mm of mercury.hope it hepls ⭐⭐follow me.

50158.

What is the chemical structure of Tetrahydrocannabinol?

Answer» TION:C₂₁H₃₀O₂.....PLEASE MARK it brainliestandfollow me now to be INBOX
50159.

Que. Why does oxygen show anomalous behavior in its group?

Answer» OXYGEN shows anomalous behaviour due to formation of p(PI)-p(pi) bond 2:-SMALL size,HIGH electronegativity,absence of d orbital in valence shell. 3:-oxygen is second most electronegative element..
50160.

A compound contains 36 % carbon (C) and 12% hydrogen (H), 24%oxygen and 28%Nitrogen , Determine its empirical formula. [The molecular mass of this compound is 400 amu], Determine its molecular formula

Answer» PLEASE SEE the ATTACHMENT for your ANSWER.
50161.

What would happen in the absence of moderator in a nuclear reactor

Answer»

rxn can't be controlled WITHOUT moderator.Explanation: ACTUALLY I don't KNOW well coz I'm preparing for CHEM not phy

50162.

Lime water + carbon carbodioxide what will happen if we add soap and shake well?

Answer»

slakelime will be FORMED brohope it HELPS U and PLS mark as brainliest

50163.

What is pop?. Tatte ? some one tell me

Answer» CHAL bhosdke...........
50164.

Why diamond is a non-metal ?

Answer»

No, diamonds are not METAL. Diamonds are made of carbon. Diamond is not a metal in anyway its just an allotrope of carbon. It does not show any physical properties or CHEMICAL properties of METALS LIKE electrical conductivity, malleability, ductility,reaction with acids or salts etc. .

50165.

What are metalloids​

Answer»

METALLIODS ARE THE COMBINATION OF PROPERTIES OF METALS AND NONMETALS . METAL + NONMETAL = METALLIODS....EXPLANATION:SELECT TO BRAINLIST ANSWER....

50166.

Metal have _______ vallency​

Answer» METALS have POSITIVE valancyI HOPE it HELPFUL you
50167.

Write which quantum number express the shapes​

Answer»

The PRINCIPAL QUANTUM numberExplanation:

50168.

Synthetical and medicnal Impotrance of hell volhard zelinsk reaction

Answer»

it is very important as it REGULATES our BODY temperature and PROTECTS US from several diseaseshope it HELPS u and pls mark as brainliest mate

50169.

What happened to borax when treated with h2so4

Answer»

with hot SOLUTION of borax ... Answer: On adding a calculated quantity of CONCENTRATED sulphuric acid to a hot concentrated solution of borax, boric acid is produced. On heating borax with ETHYL alcohol and concentrated sulphuric acid , vapours of triethylborates are produced. When ignited these vapours BURN with a green edged FLAME .

50170.

Name a an non metal having high density​ and low density

Answer» NON METAL having the highest density is iodine and LOWEST density is of HYDROGEN
50171.

How is bond order selected to the stsbility of a molecule

Answer»

Bond order also INDICATES the STABILITY of the bond. The HIGHER the bond order, the more electrons holding the atoms together, and THEREFORE the GREATER the stability.Explanation:

50172.

Which group alkali earth metals belong ​

Answer»

It BELONGS to GROUP 2 in mordern PERIODIC table

50173.

Aniline does not undergo Friedel Craft Alkylation true or false ​

Answer» FALSE.......... ............MARK ME BRAINLIEST
50174.

Which BLOCK do lanthanides belong ​

Answer»

f-block LANTHANIDES BELONGS

50175.

Potassium carbonate solve with criss cross method

Answer»

tion:This paper1 describes the Criss-Cross Method of solving linear programming problems.This paper1 describes the Criss-Cross Method of solving linear programming problems.The method, a primal-dualschemenormally begins with a roblem solution that is neither primal nor dual feasible, and generates an optimal feasible solution in a finite number of iterations. Convergence of the method is proved and flow charts of the method are presented. The method has been programmed in FORTRAN and has been RUN on a number of COMPUTERS including the IBM 1620, the IBM 7044, the CDC G-20, and the CDC 6400. A number of problems have been solved using the Criss-Cross method, and some comparisons between the Criss-Cross method and the Simplex method have been made. The results, THOUGH scanty, are favorable for the Criss-Cross method.This paper1 describes the Criss-Cross Method of solving linear programming problems.The method, a primal-dualschemenormally begins with a roblem solution that is neither primal nor dual feasible, and generates an optimal feasible solution in a finite number of iterations. Convergence of the method is proved and flow charts of the method are presented. The method has been programmed in FORTRAN and has been run on a number of computers including the IBM 1620, the IBM 7044, the CDC G-20, and the CDC 6400. A number of problems have been solved using the Criss-Cross method, and some comparisons between the Criss-Cross method and the Simplex method have been made. The results, though scanty, are favorable for the Criss-Cross method.A means of using the product form of the inverse with the Criss-Cross method is also discussed.

50176.

Chlorobenze is soluble in water true or false​

Answer» TION:it is TRUE ............
50177.

What is the amphotheric oxide ?define it ?​

Answer»

amphoteric oxides are those which react with both acids and bases to give SALT and water/ example: Zno (Zinc OXIDE)Zno + Hcl ( ACID) → ZnCl2 + H20Zno + NAOH (BASE)—--> Na2ZnO2 + H2O

50178.

Write names of the mealloids elements ​

Answer» ARSENIC ,BORON ,SILICON,ANTIMONY ,Garmanium
50179.

Could you solve this? with explanation :) fast no spam!​

Answer» REFER the ATTACHED PICTURE.
50180.

Calculate the five lowest energy levels of the hydrogen atom.

Answer» TION:Hydrogen Energy Levels We CALL these values of energy the energy levels. There is the lowest energy LEVEL, where the electron is as close to the proton as the Heisenberg uncertainty principle allows. The HIGHER the energy level the further
50181.

Name the family which has a stable configuration ​

Answer» NOBLE GAS family Explanation:because it has stable ELECTRONIC configuration..
50182.

2Agcl²—›2Ag+cl² Find its colour of reaction for tge following equation

Answer»

tion: SILVER CHLORIDE DECOMPOSES to form silver and chlorine GAS....

50183.

An atom of copper has mass of 1.0625 ×10^-22 gram how many atoms of copper are there in 16 gram?

Answer»

16 x 10^22 atomsExplanation:USE....UNITARY formula as FOLLOWS....1.0625 x 10^22 gms ~ 1 atomthen, 16 gms ~ ? atomssimply divide....16 by 1.0625x10^22.

50184.

A current of dry air was first passed through the bulb containing solution of "a" in water and then through the bulb contains pure water .the loss in mass of a solution bulb is 1.92g gm where as that in pure water bulb is 0.08 g then mole fraction of "a" is

Answer» OK ok ok ok ok ok hhfffhhn HUH huh huh RISES
50185.

IUPAC NAME FOR C6H6CLCH3

Answer»

I don't think it is C6H6ClCh3 it must be C6H6CoCh3If it is then it's IUPAC name is ACETYL (MOSTLY PREFERRED ETHANOYL)

50186.

Cation is smaller than its parent atom.​

Answer»

cation than in its parent atom. ... Cations are always SMALLER than their parent atoms this is because they have lesser ELECTRONS, while their NUCLEAR CHARGE remains the same. The remaining electrons are, therefore held more tightly by the protons in the nucleus and THUS their radii. are smaller than the parent atoms.mark me brainlist......

50187.

PIDA d) All of these59) Which of the following is correct for a solution showingpositive deviations from Raoult's law ?a) AV = +ve, AH = +ve b) AV =-ve, AH = -vec) AV = +ve, AH =-ve d) AV =-ve, AH = +ve​

Answer» RO I don't KNOW the answerfollow me I'll FOLLOW U BACK
50188.

Calculate the % of nitrogen atom in ammonia molecule

Answer» AMMONIA has 82 % of NITROGEN
50189.

Identify a Dobreiner’s triad from the first 20 elements other than Li, Na, K

Answer»

be (9.0) MG (24.3) & CA ( 40.1) is the dobereiners another triad in FIRST 20 elements.Hope this will HELP you.

50190.

Vitamin C is also called Citric acid (T/F)​

Answer»

tion:FALSE. Vitamin C is ALSO called as ASCORBIC ACID

50191.

27. Second IP of La is most likely to second IP of whichelement :-(1) Be (2) Ba (3) Ca (4) Zn.​

Answer»

(3) CA is TRUE ..........

50192.

Structural formula of 1,2,3, pro - triol.

Answer» C3H8O3 { ( C3H5) + 3(OH) }Explanation:1 2 3 prop-traiol is ALSO known as 1,2,3- propanetriol
50193.

Satyendra Nath Mahiti in Gujarati

Answer»

Explanation:Who Was Satyendra Nath BOSE? Indian physicist Satyendra Nath Bose discovered what became known as bosons and went on to work with Albert Einstein to define one of two basic classes of subatomic particles. Much of the credit for discovering the boson, or "God particle," was GIVEN to British physicist Peter Higgs, much to the chagrin of the Indian government and people. Early Life and Education Physicist Satyendra Nath Bose was born in Calcutta (now Kolkata), West Bengal, India, on January 1, 1894, the eldest and only male of seven children. Bose was a brainiac early on. He passed the entrance exam to the Hindu School, one of India's oldest schools, with flying colors and stood fifth in the order of merit. From there, Bose attended Presidency College, where he took an intermediate science course and studied with RENOWNED scientists Jagadish Chandra Bose and Prafulla Chandra Ray. Bose received a Bachelor of Science in mixed mathematics in 1913 from Presidency College and a Master of Science in the same subject in 1915 from Calcutta University. He received such high scores on the exams for each degree that not only was he in first standing but, for the latter, he even created a new record in the annals of the University of Calcutta, which has yet to be surpassed. Fellow student Meghnad Saha, who would later work with Bose, came in second standing. Between his two degrees, Bose married Usha Devi at age 20. After completing his master's degree, Bose became a research scholar at the University of Calcutta in 1916, and began his studies on the theory of relativity. He also set up new departments and laboratories there to TEACH undergraduate and graduate courses. Research and Teaching Career While studying at the University of Calcutta, Bose also served as a lecturer in the physics department. In 1919, he and Saha prepared the first English-language book based on German and French translations of Albert Einstein's original special and general relativity papers. The pair continued to present papers on theoretical physics and pure mathematics for several years following. In 1921, Bose joined the physics department at the University of Dhaka, which had then been recently formed, and went on to establish new departments, laboratories and libraries in which he could teach advanced courses. He wrote a paper in 1924 in which he derived Planck's quantum radiation law without referencing classical physics—which he was able to do by counting states with identical properties. The paper would later prove seminal in creating the field of quantum statistics. Bose sent the paper to Einstein in Germany, and the scientist recognized its importance, translated it into German and submitted it on Bose's behalf to the prestigious scientific journal Zeitschrift für Physik. The publication led to recognition, and Bose was granted a leave of absence to work in Europe for two years at X-ray and crystallography laboratories, where he worked alongside Einstein and Marie Curie, among others. Einstein had adopted Bose's idea and extended it to atoms, which led to the prediction of the EXISTENCE of phenomena that became known as the Bose-Einstein Condensate, a dense collection of bosons—particles with integer spin that were named for Bose. After his stay in Europe, Bose returned to the University of Dhaka in 1926. Although he did not have a doctorate, Einstein had recommended he be made a professor, and so Bose was made head of the physics department. But upon his return, Bose did not publish for a significant period of time. According to a July 2012 New York Times article in which Bose is described as the "Father of the 'God Particle,'" the scientist's interests wandered into other fields, including philosophy, literature and the Indian independence movement. He published another physics paper in 1937, and in the early 1950s worked on unified field theories. After 25 years in Dhaka, Bose moved back to Calcutta in 1945 and continued to research and teach there until his death in 1974. Recognition and Honors

50194.

Show how electron transfer results in the formation of calcium oxide

Answer»

hey... frend ANS... is hereExplanation:Calcium atom will loose two electrons to gain noble gas configuration and form calcium cation with +2 charge. Oxygen atom will gain two electrons to gain noble gas configuration and form OXIDE ION with -2 chargei hope you understand plzz... mark as brilient

50195.

Aluminium oxide is a/an A. basic oxideB. acidic oxideC. neutral acidD. amphoteric acid​

Answer»

B) acidic oxidethis is your ANSWER please mark me as BRAINLIEST and FOLLOW me

50196.

Show that in aqeous solution pH +pOH =pKw and what is the value of pH+pOH at 25° c​

Answer»

POH=11.6,PH=2.4 it's RIGHT ....

50197.

Water is evaporated from 135mL of 0.224 M MgSO4 solution until the solution volume become 105 ml . what is the molarity of MgSO4 in the solution that result

Answer»

Explanation:We have   moles of MgSo4We know the molarity and the volume of solution. However, the volume does not have the proper units since it is given in terms of milliliters INSTEAD of liters. We can convert 4.5 mL into liters by using the conversion factor 1000mL = 1L. When 4.5 mL is divided by 1000 mL/L, we obtain a volume of 0.0045 L. Now we can rearrange the equation to solve for the number of moles. This can be ACCOMPLISHED by multiplying by liters of solution on both sides of the equation. The liters of solution will cancel out on the right side, leaving the number of moles being equal to the molarity times volume LIKE so:Moles of solute =  liters of solution  × MolarityMoles of solute = 0.0045 L * 0.05 MHope it HELPS!Please mark it as Brainliest !!

50198.

Derive a mathematical equation of bouyant force​

Answer»

Buoyancy force can be calculated with the EQUATION Fb = Vs × D × G, where Fb is the buoyancy force that is acting on the OBJECT, Vs is the submerged VOLUME of the object, D is the DENSITY of the fluid the object is submerged in, and g is the force of gravity.

50199.

21. Butyric acid contain C, H, O. A sample 4.24mg of butyric acid is completely burned. It give 8.45mg CO2and 3.46mg of H2O. The molecular formula of butyric acid is 88amu. What is molecular formula?​

Answer»

answer is , EMPIRICAL FORMULA is C2H4Othe VALU of n=88/44=2 , so MOLECULAR formula is C4H8O2

50200.

1. In KO2, the nature of oxygen species and the oxidation state of oxygen atom are, respectively(a) superoxide and -1/2 (b) oxide and -2(c) peroxide and -1/2 (d) superoxide and -1.(Online 2018)​

Answer» AEXPLANATION:In KO2 the potassium FORM super OXIDE in AIR .