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.
| 47251. |
0 0Question: 21Hydrogen and deuterium differ inCoca0O Melting pointReactivity with oxygenO Reducing actionO Reactivity with chlorineInvalid Questioncococe |
| Answer» YES it's INVALID QUESTIONEXPLANATION:MARK as BRAINLIEST | |
| 47252. |
The rate of diffusion of oxygen is x. The rate of diffusion of nitrogen at same temperature and pressure is |
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Answer» hum funk fm gym tn vo jb tk tn tn tn tn tn tn tn tn tnExplanation:Ruth their own lives in which the jaan US to network with blackberry or windows Phone and blackberry and there is a good tip of the jaan us to network problem h jaan m aapko kush ni hu jaan khana kha lena chahiye tha toh doop m the kr K toh m BOLI ki PAPA k PASS h kr k toh m boli ki papa k pass h kr k toh m boli ki papa k pass h kr k toh m boli ki papa k pass h kr k |
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| 47253. |
Multiple Choice ( Select out of 4 Options, for the question below.)18. For the reactionNi (s) + Cutcim = Ni2+(1M)OptionsO 55 KJO 110 KJ0 - 55 KJO -110 KJClear Response< PrevNext >End |
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Answer» your answer is option d hope it HELPS you please FOLLOW me please please MARK my answer as brainliest please please please please |
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| 47254. |
Atomic spectra is an example of1. continuous spectra 2.band spectra |
| Answer» ATOMIC SPECTRA is an EXAMPLE of is 1. CONTINUOUS spectra | |
| 47255. |
8. A zero Order reaction Xproduct, with an initial concentration 0.02M has a half-life of 10 mins if one starts with concentration 0.04M, then the half-life is _____________a) 10s b) 5min c) 20min d) can’t be predicted |
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Answer» c. 20 min EXPLANATION:zero ORDER r×n t1/2 = AD/2kt1/2 = AD/2k , 10= 0.02/2k K= 0.02/2×10×100 = 1/1000t1/2= AD/2k = 0.04 × 1000 / 2×1×100 =20 min. Therefore option c is CORRECT. Hope it will help you. |
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| 47256. |
определите скорость химической реакции при 65° если температурный коэффициент равен 2 а при 25° скорость равна 2 моль 8 л/ч |
| Answer» PLZ WRITE in English Explanation:SORRY can't understand THANKS for free points | |
| 47257. |
Calculate the molar mass of chloroform |
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Answer» -119.5gExplanation:-Chemical formula of Chloroform:-=> CHCl₃In Chloroform three elements are present i.e. Carbon(C), Hydrogen(H) and Chlorine(Cl).•Atomic MASS of Carbon - 12u•Atomic mass of Hydrogen - 1u•Atomic mass of Chlorine - 35.5uSo,now LET's CALCULATE the molecular mass of Chloroform firstly.= 12 + 1 + 35.5 × 3= 13 + 106.5= 119.5uSince molecular mass of Chloroform is 119.5u,so it's molar mass will be the molecular mass in grams.Thus,molar mass of Chloroform is 119.5g.Some Extra Information:-Chloroform: Chloroform (CHCl₃) is an organic compound. It is a colourless liquid with a pleasant SMELL. Chloroform is inflammable and is used in industrial processes. It is also a precursor to VARIOUS refrigerants. |
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| 47258. |
Which method used to ascent the series of aldehyde in carbohydrates |
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Answer» The Kiliani–Fischer synthesis, named for GERMAN chemists Heinrich Kiliani and Hermann Emil Fischer, is a method for synthesizing monosaccharides. It proceeds via synthesis and hydrolysis of a cyanohydrin, THUS elongating the carbon chain of an aldose by one carbon atom while PRESERVING stereochemistry on all the previously present chiral carbons. The new chiral carbon is produced with both stereochemistries, so the product of a Kiliani–Fischer synthesis is a mixture of two diastereomeric sugars, CALLED epimers. For example, D-arabinose is converted to a mixture of D-glucose and D-mannose. |
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| 47259. |
Bring out the meaning of hearts and hands |
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Answer» Hearts and Hands'' by O. Henry is a story about TWO acquaintances who meet on a train. When MR. Easton encounters Miss Fairchild, he is handcuffed to another MAN. One passenger on the train, however, realizes that THINGS are not as they seem. |
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| 47260. |
Find the molecular formula of the compound with molar mass 78 g mol-1 and emperical formula CH |
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Answer» C6H6Explanation:EMPIRICAL MASS = 12 + 1 = 13NOW x = Molar mass /empirical mass = 78/13 = 6SO, now MOLECULAR formula = empiirical formula x x = (CH) x 6 = C6H6 |
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| 47261. |
Class 9 science book question 1 on the basic of thomson,s model of atom,explain how the atom is neutral as a whole?answer in one word |
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Answer» ✍️✍️Just WAIT |
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| 47262. |
Atomic spectra is an example of |
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| 47263. |
Mg has Z=12.find its no. of electrons. How do you calculate mass no. ? |
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Answer» qExplanation:no of ELECTRONS = atomic number (Z) = 12mass number = atomic number + no of PROTONS Generally mass no is DOUBLE the number of proton for even numbers as of magnesium is 24 and oxygen is 16 and in ODD cases one is more as of sodium is 23 , except some comes like of NITROGEN is 14 |
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| 47264. |
....A solid substance which has sharp anddefinite melting point |
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Answer» Crystals have sharp, well-defined MELTING points; amorphous SOLIDS do not. |
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| 47265. |
The boiling point of methyl alcohol is 64.7°C. It forms a homogeneous solution with water. What method can be used to separate them? Explain with neat labelled diagram |
| Answer» ETHANOL is more volatile than WATER, since it has a LOWER boiling point (78° C) and THUS mixture of ethanol and water can be seperated by the METHOD of fractional distillation. Answered By. toppr. How satisfied are you with ... | |
| 47266. |
What is the empirical formula of the following ? Fructose (C6H12O6) found in honey Caffeine (C8H10N4O2) a substance found in tea and coffee |
| Answer» EMPIRICAL FORMULA = C₄H₅N₂O. | |
| 47267. |
How can u demonstrate exothermic reaction I want this experiment aim |
| Answer» DEMONSTRATE EXOTHERMIC REACTION experiencehope it helpsdearmark as brainliestgd NIGHT ❤️ | |
| 47268. |
Vii) CH,C(CI)(C,HICH,CH, |
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Answer» ?????????????????????? |
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| 47269. |
The ratio of the total binding energy of nuclied to its mass number is called as ? 1.average binding energy2.mass defect3.rest mass4.packing fraction |
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Answer» B CALCULATE the MASS defect by SUBTRACTING the experimental mass from the CALCULATED mass. C Determine the nuclear BINDING energy by multiplying the mass defect by the change in energy in electronvolts per atom. Divide this value by the number of nucleons to obtain the binding energy per nucleon. |
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| 47270. |
The rate constant of a reaction is 5.810-2 S-1the order of reaction is ______a) First order b) Zero Order c) Second Order d) Third Order |
| Answer» SECOND ORDER is the ANSWER | |
| 47271. |
1) The heterocyclic compound containing nitrogen hetero atom a) indoleb) pyridinec) pyrroled) all these |
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| 47272. |
46.) The bond which is not observed in co3-2, ion is |
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Answer» tion:Since carbon is located in period 2 it does not have access to the d sublevel and MUST adhere to the octet rule. There are three DIFFERENT POSSIBLE resonance STRUCTURES from carbonate. Each carbon oxygen bond can be THOUGHT of as 1.333 bonds. the average of a double bond and 2 single bondplzz follow me |
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| 47273. |
What are the steps followed to separate iron fillings from aluminum powder |
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Answer» by using magnetExplanation:we can seprate IRON fillings from ALLUMINIUM powder by using a magnet. Iron fillings will GET attracted to magnet, leaving just alluminium powder belowhope you LIKE the answerplease mark as brainliest if you liked answer |
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| 47274. |
The magnitude of properties is independent of direction is called............OptionsO anisotropicisotropicpolymorphicorthorhombic |
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Answer» vector is a QUANTITY or phenomenon that has two independent PROPERTIES: magnitude and direction. The TERM ALSO denotes the mathematical or geometrical representation of such a quantity. ... A quantity or phenomenon that EXHIBITS magnitude only, with no specific direction, is called a scalar |
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| 47275. |
Given the numbers : 161 cm, 0.161 cm, 0.0161 cm. The number of significant figures for the three numbers are |
| Answer» 1)32)33)4Explanation:number after POINT are CONSIDERED | |
| 47276. |
Best trick to know the atomic no. of any elements? |
| Answer» TION:not any TRICK , U have to LEARN them | |
| 47277. |
Date 1o) Rate constant for a reaction is 3.12 x 103 minia) How many min does it take for reactantto drop its concentration from 0.045 m toO 02mb) what is the molarity of reactent efterolish |
| Answer» MANU more bachaaffhu dgjnkphsdtfuh edyi gciuf tduf rchu sdbgg i zbbijn ddbu seviv EXPLANATION:ustifoufuoodijdhoc gifoho CUJ | |
| 47278. |
3. Give reasons for the following: (a) Liquid ammonia is used as a refrigerant in ice plants.6 |
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Answer» When liquid ammonia VAPORIZES it absorbs HEAT from the SURROUNDING. It is highly volatile. It easily liquifies under a pressure at room temperature. Hence liquid ammonia is used as a refrigerant in ice plants.Evaporation of a liquid NEEDS heat energy. When liquid ammonia vaporizes, it absorbs large quantities of heat without changing its temperature. |
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| 47279. |
Iupac name and structural formula |
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Answer» 4.3 IUPAC naming and formulae (ESCKG)What is IUPAC naming? (ESCKH)In order to give compounds a name, certain rules must be followed. When naming organic compounds, the IUPAC (International Union of Pure and Applied Chemistry) nomenclature (naming SCHEME) is used. This is to give consistency to the names. It also enables every COMPOUND to have a unique name, which is not possible with the common names used (for example in industry). We will first look at some of the steps that need to be followed when naming a compound, and then try to apply these rules to some specific examples.A GOOD general rule to follow is to start at the end (the suffix) and WORK backwards (from right to left) in the name.Explanation:TIPMolecules can contain both double or triple bonds and other functional groups (e.g. an alkene and an alcohol functional group in one molecule - propenol). However, all molecules explored in this book will contain only single carbon-carbon bonds when combined with other functional groups. |
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| 47280. |
The crystal with a metal deficiency defect is ________a) Nacl b) Feo c) Zno d) Kcl |
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Answer» Nacl is a correct ANSWER please MARK me brainlest and FOLLOW me |
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| 47281. |
Dlluted Nitric acid reacts with magnesium metal to produce laughing gas. In this process oxidation state of Nitrogen change from: |
| Answer» NITROGEN oxideExplanation:HOPE it HELPED | |
| 47282. |
You are provided with four test tubes containing distilled water, baking soda solution, tamarind solution and salt solution. Write down the stepwise procedure to find the nature (acidic/basic/neutral) of each solution using turmeric. State your observation and inference. |
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Answer» tion:Put turmeric in each of the test tubes2. Shake a bitObservation :1. In distilled WATER : YELLOW colored solution2. In baking soda solution : Red colored SOLUTION3. In tamarind solution ; YELLOW colored solution4. In salt solution ; YELLOW colored solutionInference :Except for baking soda.. All are acidic.. Only baking soda is BASIC |
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| 47283. |
Duralumin is an alloy of __________a) Cu. Mn b) Cu,Al,Mg c) Al,Mn d) AlCu,Mn,Mg |
| Answer» TION:ALUMINUM............... | |
| 47284. |
Plz ans in detail and also add some diagram plz its for test |
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Answer» the ANSWER POWER should be 3 if it is HELPFUL mark my answer brainiest |
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| 47285. |
Which of the following plot gives Ellingham diagram? a) S vs T b) G°vs T c) G° vs 1/T d) G° vs T2 |
| Answer» B..............ANWER..................................................... | |
| 47286. |
Name the gas that burns with a pop sound ?a.Nitrogen b.Oxygen c.Hydrogen. |
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Answer» hydrogenExplanation:your answerthank you |
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| 47287. |
How do we use ozone to purify water? |
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Answer» Ozone does remove trace amounts of DISSOLVED metals such as iron, manganese and copper by oxidising them to their highest oxidation state. They will then PRECIPITATE out of the water and should be removed by filtration.Explanation:HOPE this answer will HELP u and please FOLLOW me and mark as a brainliest answer . |
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| 47288. |
Why chemistry called subject of exprement |
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Answer» Chemistry is KNOWN as EXPERIMENTAL science as an experiment is PERFORMED under controlled CONDITIONS in an activity and we observe a natural or an artificially CREATED phenomenon.Explanation: |
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| 47289. |
CH3 - CH( CH3) - CH2 - CH( OH ) - CHO |
| Answer» CARBON chain has to be chosen such that the functional group has the lowest NUMBER. So we start numbering from the carbon of aldehydic group (−CHO). Thus there are 5 carbon is the longest chain. At C-2 ethyl group and at C-3 position methyl group is present. The suffix USED for ALDEHYDES is "al". Therefore, the IUPAC name is: 2-Ethyl-3-methyl-pentanal. | |
| 47290. |
4. Classify the following as cationic anionic or neutral complex - co(1) Co(NH3)6] Cl3(2)[Fe (Co5)](3)[Ag(NH3)2]cl(4)Na3 [CO(NO2)6 |
| Answer» HIIII FRND.........!!!!!! | |
| 47291. |
Tungsten metal is used to make a solenoid type coil in an electric bulb Give scientific reason? |
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Answer» tion:Tungsten metal is used to make a solenoid type COIL in an ELECTRIC bulb because its melting point is very HIGH. Thus, when a high amount of current is passed through it, it becomes red HOT and emit lights without getting burnt. |
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| 47292. |
How many hydrogen atoms in an acyclic alkane with three carbon atoms? |
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Answer» tion:The simplest of these cyclic hydrocarbonsA hydrocarbon with a ring of CARBON atoms. has the formula C 3H 6. Each carbon atom has two hydrogen atoms attached (Figure 12.6 "Ball-and-Spring MODEL of Cyclopropane") and is CALLED cyclopropane. |
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| 47293. |
Answer the attachment.......Don't spam |
| Answer» HAT: A = 56Iron nuclei MASS = 55.85 uAnswer:Formula to be used:and = Step by step explanation:-RADIUS ( by Rutherford) is given as :So, mass of iron NUCLEUS = so, nuclear density = | |
| 47294. |
Work of expansion or compression or pressure-volume work. (based on the ch ______Thermodynamics) |
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Answer» The EXTERNALLY MEASURED forces and external EFFECTS MAY be ELECTROMAGNETIC, gravitational, or pressure/volume or other macroscopically ... |
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| 47295. |
) Fast breeder reactor uses (a) boiler(b) direct cycle of coolant system(cdouble circuit system of coolant cycle(d) multi pass system(e) single circuit system |
| Answer» MULTI PASS SYSTEM is CORRECT ANSWER | |
| 47296. |
What is the difference between absolute temperature and boiling point? |
| Answer» ABSOLUTE TEMP doesn't CHANGE ... and | |
| 47298. |
A. Classify the followingai cationicanionicCationicneutral complexndaal complex(1) [CO(NH3) 6] Cl.(2) [Fe(co)5](3) [Ag (NH3)2 ]Cl( 4)Na3[Co (NO2)6] |
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Answer» Hope it will help you Explanation:The IUPAC name of [AG(NH3)2][Ag(CN)2] coordination COMPOUND is di ammine SILVER (I) dicyano argentate (I).The name of the CATION is written first followed by the name of the anion.A complex cation is named by naming the ligands and then the METAL ion. The oxidation number of the metal ion is written next to the metal ion in Roman number in parenthesis.A complex anion is named by naming the ligands and then the name of the metal ion ending with suffix -ate. The oxidation number of the metal ion is written next to the metal ion in Roman number in parenthesis. |
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| 47299. |
Plz answer this fast need explanation |
| Answer» HOPE U helpfull..MARK as BRAINLIEST | |
| 47300. |
Given byNet electric wook is |
| Answer» TION:I think your QUESTION is incomplete.please mark me as brainliest anwer | |