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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 46551. |
IUPAC names. I know the answer myself you need to tell me why you think the answer is so.Do not waste your time here by typing that you don't know(for points) or whatever, if you do not know then move on. |
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Answer» I am in YOUNGER CLASS I cannot understandI am SORRY I will TRY laterExplanation:I am in younger class I cannot understandI am sorry I will try LATER |
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| 46552. |
IML 0.01MEDIA - 0.00087xml 0.01 M EDTA: 9 |
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Answer» i didn't UNDERSTAND me you QUESTIONS ......... |
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| 46553. |
Dalton's atomic theory could not explain the existerce of 25O isotopesO isobarsO allotropesO both (1) and (2) |
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Answer» tion:Dalton's ATOMIC THEORY COULD not explain the existerce of•Allotropes. |
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| 46554. |
Find the mass of 44.8 liter of ammonia gas at stp ( n=14,h=1) |
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Answer» use the ideal GAS law - PV = nRT P is pressure (1 under STP), V is the volume in liters, n is the number of moles, R is the gas constant (0.082) and T the temperature in Kelvins (273 under STP). So, rearrange for n and SOLVE and you get: n=PV/RT = 1*44.8/(0.082*273) = 2 moles. Ammonia is NH3 so the MOLECULAR weight is 17 g/mole. To get the mass, multiple the # moles times the molecular weight: 2 moles * 17 grams/mole = 34 grams |
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| 46555. |
What is meant byChemical Diversity?? |
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Answer» Chemical Diversity (ChemDiv) is a contract RESEARCH organization headquartered in SAN Diego, California, with subsidiaries in RUSSIA and Ukraine. It provides integrated discovery and DEVELOPMENT solutions to pharmaceutical and BIOTECH companies for their research and development programs. |
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| 46556. |
What is ionization energy ? Explain the factors affecting ionization energy? |
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Answer» The most notable FACTORS affecting the ionization energy include: ... EFFECTIVE NUCLEAR charge (Zeff): if the magnitude of electron shielding and PENETRATION are greater, the ELECTRONS are held less tightly by the nucleus, the Zeff of the electron and the ionization energy are smaller. |
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| 46557. |
• A compound is 21.20%. Nitrogen, 6.06 percent of hydrogen, 24.30% sulpur and 48.45 percent oxygen. Write theEmpirical formula for the compound. |
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Answer» n :-% N = 21.02 %H = 6.06 %S = 24.30 %O = 24.30 Relative no of atoms Divide the % composition of elements with their respective atomic masses Atomic MASS of N = 14Atomic mass of H = 1Atomic mass of S = 32Atomic mass of O = 16 ⇒ N = 21.20 / 14 = 1.5 ⇒ H = 6.06 / 1 = 6.06⇒ S = 24.3 / 32 = 0.75⇒ O = 48.45 /16 = 3.02 Simple Ratio Now divide all the values obtained above with the least no in order to GET the simple ratio ⇒ N = 1.5 /0.75= 2⇒ H = 6.06 /0.75= 8⇒ S = 0.75/ 0.75= 1⇒ O = 3.02/ 0.75= 4Empirical FORMULA = N2 H8 S O4 The EMPIRICAL formula of the compound is N2 H8 S O4 |
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| 46558. |
How many gram of naoh soln is required to make 10 of 100 ml soln |
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Answer» tion:In 500 g of solution of 10% w/w NAOH present.Mass of the SOLUTE = 100 10×500 =50 gSo, 50 g of NaOH will be required to PREPARE 500 g of 10% .I hope it's help uhh ❤️❤️ |
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| 46559. |
What are semi metals? Name any two semi metals.Fither |
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Answer» sentimental are elements CONTAINING properties similar between matalab and non metals.Explanation:EX. BORON, SILICON |
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| 46561. |
On adding zinc granules to freshly prepared ferrous sulphate solution a student observes that: a) a dull brown coating is formed.b) a grayish coating is formed.c) a black coating is formed.d) no coating is formed. |
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| 46562. |
Can burning of petroleum or its refining cause any harm to our environment? How? |
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Answer» tion:Climate changeThe combustion of petroleum causes an increased AMOUNT of carbon dioxide emissions as well as other greenhouse gases. ... Such warming of the TEMPERATURES will have MASSIVE impacts on rainfall patterns, retreat of glaciers, and the average sea levels.please FOLLOW me and make me as brainliest |
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| 46563. |
Q.38) lonization energies of an element X (in kcal/mol) are as follows: I. E1 : 176I. E2 : 3471. E3 : 1848The oxide & fluoride formed by X will be |
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Answer» you are not filtered into the y y your picture of the day of school and the other day I will send you a copy of my LIFE I will be in the MORNING Andrew I will send you the best of LUCK in the morning and then we will be in the morning of the following ad the other hand I PROMISE you with the following URL Adobe and other countries to help with the following URL AdobeExplanation: I amehge the following URL and keywords to help with the following URL Adobe and other countries to help with the following URL Adobe and other countries to the following URL Adobe the intended recipient please notify us IMMEDIATELY and delete this message was sent to the following |
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| 46564. |
Double bond equivalent (D.B.E) in following compound is : |
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Answer» itysuflr0djhxlifykif86do6doyd |
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| 46565. |
At the the slatesolute & solventof dynamic equilibrium for solute +solvent given by solution |
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Answer» solute+solventcrystallization ⇌dissolutionsolution ... to the formation of a solid with a well-defined CRYSTALLINE STRUCTURE, ... occur at the same RATE is in DYNAMIC equilibrium.I HOPE this answer is help you |
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| 46566. |
There are millions of substances around us in nature because (A) Nature has millions of different atoms(B) Nature combines and rearrange atoms to form millions of substance molecules(C) Nature combines and rearranges molecules to form millions of substances(D) None of these. |
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Answer» answer because molecules are LIMITED in NUMBER and there are MANY SUBSTANCES |
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| 46567. |
CalculateBohur's radius for second orbite of H-atom |
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Answer» ᴘʟᴀɴᴄᴋ's ᴄᴏɴsᴛ. ʜ=6. 6262×10−34ᴊs; ᴍᴀss ᴏғ ᴇʟᴇᴄᴛʀᴏɴ =9.❤ |
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| 46568. |
Which of the following statement is incorrect? Options The hairs of camel, llama and alpaca are processed to yield cotton. Bombyx Mori is the scientific name of mulberry silk moth. Silk fibres from cocoons are taken out and reeled into silk threads. Silkworms are caterpillars of silk moth. |
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Answer» 1 . is WRONG 2. is {I GUESS} CORRECT 3. is wrong 4. is correct |
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| 46569. |
Draw and explain about distillation process |
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Answer» DistillationDistillation is the process of SEPARATING the COMPONENTS or substances from a liquid MIXTURE by using selective boiling and condensation. Distillation may result in essentially complete SEPARATION, or it may be a partial separation that increases the concentration of SELECTED components in the mixture. PLEASE MARK AS BRAINLIEST |
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| 46570. |
What is land degradation? explain the 4 causes for land degradation |
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Answer» gradation is caused by multiple forces, including extreme weather conditions particularly drought, and human ACTIVITIES that POLLUTE or degrade the quality of soils and land UTILITY negatively affecting food production, LIVELIHOODS, and the production and PROVISION of other ecosystem goods and services.___________________________________ |
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| 46571. |
Dar nirdharak pad ko samjhaiye |
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Answer» what you MEANI DONT UNDERSTAND |
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| 46572. |
Balance the equation by oxidation number method, and identify the oxidizing agent and reducing agent cl2O-lg ) + H2OclO2(aq) + 02 |
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Answer» jsjjsnsnsnnsnsjjsjsjsjExplanation:fihfizitstjjgzeauSsszigyguugzgUTUtjjajsjsjjshdjsjsjsjjakaiaiksjsjjsjsjjsnsnsnsnnsnsnsnnssnnsnnsns |
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| 46573. |
Explain the reactivity of group-14elements towards halogens. |
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Answer» The elements of group 14 form halides of the formula MX4 and MX2. (1) All the elements of group 14 form tetrahalides of the formula MX4. (2) Most of the tetrahalides are COVALENT in NATURE. ... The tetrachloride of all the REMAINING elements are easily hydrolysed. |
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| 46574. |
12. Incorrect among the following is/are (a) Number of electrons having m = 0 in Na are 7(b) Energy of 4s orbital is more than 3d in H-atom(C) Energy of 2s orbital in O is more than carbon(1) (a) only(2) (b) only(3) (a) & (b) only(4) (c) only |
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Answer» (a) and (B) only...... |
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| 46575. |
Out of the given orders of ionic character of compounds, select the correct one. 1:Cuci < Naci2: Mgcl2 > CaCl23: FeCl3 > FeCl24: BeSO4 > Caso |
| Answer» 4TH because it will REACT more then CasoExplanation:mark me as brainlest then I will inbox U | |
| 46576. |
Sodium crystallizes in a bcc lattice, hence thecoordination number ofsodium in sodium metal isO 6080 40 0 |
| Answer» TION:sry I don't know CORRECTLY....but I THINK the answer is 08 | |
| 46578. |
Calculate the wavenumber for the longest wave Lengthtransition in Balmer series of hydrogen. R = 1.09x 107m-1[hint : longest wavelength radiation corresponds tosmallest frequencyand least energyTake n1= 2,n2=3, R (Rh) = 1.09 x 107 m-1 |
| Answer» EXPLANATION:THANKS for FREE POINTS | |
| 46579. |
Que 2. prove that half life period of a zero order reaction is proportional to initial concentration of reactant |
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Answer» yesdssssssssssssssssssssssssssssss |
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| 46580. |
What is neutralisation reaction? |
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Answer» neutralization or neutralisation is a CHEMICAL REACTION in which acid and a base REACT quantitatively with each other.....HOPE this will help you. . . . |
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| 46581. |
Compare the 0-0 bond length in compounds. (a) H2O2; (b) F2021: a = b2: a>b3: b> a4: Data not sufficient |
| Answer» OPTIONS A......0 is not COMPARE me | |
| 46582. |
compressibility factor Z for N2 at -23 degree Celsius and 25 ATM pressure each 1. 2 .calculate moles of N2 gas required to fill a gas cylinder of 7 litre capacity under the given given conditions (use R=1/12 Latmmol-1 K-1) |
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Answer» i will HELP you but you have to do me BRIANLIEST |
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| 46583. |
List two function of finger like projections present in the small intestine |
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Answer» IF THIS ANSWER HELPS YOU FOLLOW ME AND AND MARK AS BRAINLIST ANSWER |
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| 46584. |
Addition of water across a double bond is termed as.... |
| Answer» HYDRATION of ALKENES........... | |
| 46585. |
56g of n2 reacts 9g of h2 in a closed vessel to form nh3. which reactant is left and how much |
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Answer» N 2 + 3H 2 → 2NH 3 2 4 0 2−x 4−3x 2x According to the QUESTION, 2x=2=>x=1 Hence at EQUILIBRIUM, NUMBER of moles of N 2 =2−x=2−1=1 number of moles of H 2 =4−3x=4−3=1 number of moles of NH 3 =2x=2 |
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| 46586. |
Please do it as fast as u can... |
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Answer» tion:the following functional groups are present(1) acid ANHYDRIDE (2) ALCOHOL(3) KETONE(4) primary amine(5) SECONDARY amine |
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| 46587. |
An organic compound containing 'C' and 'H' has 92.3% of carbon. What is its empirical formula? (A) CH,(B) CHA(C) CH(D) CH |
| Answer» ANSWER is in attachmentExplanation: | |
| 46588. |
Calculate the no. of moles of 9 gm of h2o |
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Answer» Water(H2O) has a molecuar mass of 18, this MEANS it weights 18 g per mole. A mole is 6.0221415*1023molecules (Avogadro's number). If you have 1 g of water, you therefore have 1/18 of a mole, or 3.34*1022 molecules.PLEASE MARK MY ANSWER AS BRAINLIEST |
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| 46589. |
Haymaximum number of unpaired electrons o , mg , p ,F |
| Answer» FE2+ has the MAXIMUM NUMBER of unpaired d-electrons.Explanation: Fe2+ has the maximum number of unpaired d-electrons.Zn(30)=[Ar]3d10,4s2.Fe(26)=[Ar]3d6,4s2.Ni(28)=[Ar]3d8,4s2.Cu(29)=[Ar]3d10,4s1. | |
| 46590. |
For the following reaction: Fe2O3+3CO — 2Fe+3CO2, the oxidation number of carbon changes by how many units? |
| Answer» INITIAL OXIDATION number of C=0Final oxidation number of C in CO=+2Hence, the oxidation number of C INCREASES by 2 per ATOM | |
| 46591. |
How many of them are true solutions? Copper sulphate solution, milk, blood soap solution milk of magnesia, brine solution- |
| Answer» COPPER SULPHATE SOLUTION | |
| 46592. |
For the following reaction: Fe2O3 +3CO-2Fe+3CO2, the oxidation number of carbon changes by how many units? Options1234 |
| Answer» MARK me as brilliantExplanation:Initial OXIDATION number of C=0Final oxidation number of C in CO=+2Hence, the oxidation number of C INCREASES by 2 PER atom | |
| 46593. |
A mixture of CaCO3(s) and NH4HS(s) is heated upto constant mass, if vapour density of gasesevolved is measured and found to be 95/6 then the% by moles of CaCO3 in initial mixture will be -CaCO3(s) + Cao(s) + CO2(g)NH4HS(s) + NH3(g) + H2S(g) |
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Answer» jxdhhxvbxExplanation:hxhdhdhdbhhhfhfhfhffhhhhfhfhr in my GRANDMOTHER and I will be there at a TIME and then I will be there at a time and then I will be there at a time and then I will be there at a time and then I yyyyyy the GIVEN below PROCESS of GETTING a |
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| 46594. |
Does formula and symbol of element be same |
| Answer» YES , the symbol of an element denotes the elemental REPRESENTATION of an element . the formula of an element depend UPON the state it exits , in therefore in case the symbol and formula of the element is same. HOPE you will get answer. | |
| 46595. |
In terms of period and groups where would you locate |
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Answer» The element with Z = 114 will have the electronic configuration [RN]5f 14 6d 10 7s 2 7p 2 . Thus, the element belongs to the seventh PERIOD. The ELECTRON enters p orbital. Hence, it belongs to p block. The group number is 10+4=14. The element is Flerovium Hence, the element belongs to the seventh period and 14TH group. |
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| 46596. |
What is neutralisation Reaction also give an example ? |
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Answer» keep staying happy and HEALTHY ❤️Explanation:A salt is any COMPOUND which can be derived from the neutralization of an acid and a base. The word "neutralization" is used because the acid and base PROPERTIES of H+ and OH- are destroyed or neutralized. In the reaction, H+ and OH- COMBINE to form HOH or H2O or water molecules. |
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| 46597. |
Consider the metalsand Solutions given in the box [zn, mg, cu, ag, cuso4, mgso4] |
| Answer» ZNSO4,AGSO4,CUSO4,MGSO4 | |
| 46598. |
A weilding gas contain 92.33% Carbon, 7.67% hydrogen a volume of 10 litre of this gas has weight 11.6g at STP. Calculatemolecular formula |
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Answer» weilding gas contain 92.33% CARBON, 7.67% hydrogen avolume of 10 litre of this gas has WEIGHT 11.6g at STP. Calculatemolecular formula |
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| 46599. |
Which theory opposed the Rutherford's model of atom ? |
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Answer» The main problem with Rutherford's MODEL was that he couldn't EXPLAIN why negatively CHARGED electrons remain in orbit when they should instantly fall into the POSITIVELY charged nucleus. This problem would be solved by NIELS Bohr in 1913 |
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| 46600. |
In a reaction, the oxdation number of an element becomes zero from-1. It is a case of OptionsOxidationReductionNeither oxidation nor reductionBoth oxidation and reduction |
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Answer» oxidationExplanation: |
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