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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.
| 3251. |
Which of the following is are an endothermic process |
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Answer» OPTION C is correct HOPE THIS ANSWER HELPS YOU Make my answer as BRAINLIEST |
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| 3252. |
How likely are water molecules to form H3O+ |
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Answer» Answer: ACID – a SUBSTANCE that produces hydronium IONS (H3O+) when dissolved in water. Explanation: When acid is added to water, H+ ions are FORMED in the solution. These ions cannot exist alone and HENCE they readily combine with water molecules to form the hydronium ion (H3O+). |
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| 3253. |
Plz solv this , vapour phase |
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Answer» Explanation: A target audience is a PARTICULAR cohort of consumers WITHIN a target market, identified as the RECEIVERS for a particular advertisement or message. In a marketing communication a.k.a marcom campaign, IDENTIFYING a target audience is crucial as it helps focus the individual advertising and promotional efforts. |
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| 3254. |
Formula of bleaching powder used in house hold (chemistry) |
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Answer» Bleaching Powder's chemical FORMULA is CaOCl2 and is CALLED Calcium OXYCHLORIDE. |
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| 3255. |
Which of the following chemical Equation the abbreviations represent the correct States of the Reactants and Products Involved At Reaction TemperatureA) 242 (l) + 02 (l) → 2H20 (9)B) 2H2(g) +02 (l) ► 2h120 (l)c) 242(g) + 02 (g) -- 2H 20 (l)d) 2H2(g)+02 (g) → 2H20 (g) |
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| 3256. |
Suggest a method to liquefy atmospheric gases?? |
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Answer» Answer: Atmospheric gases can be LIQUEFIED by applying pressure and lowering TEMPERATURE. When enough pressure is applied, the gases are HIGHLY COMPRESSED into a small VOLUME. The particles of gases get so close together that they start attracting one another sufficiently to form a liquid. |
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| 3258. |
How will you separate a mixture of sulphur and iron fillings? |
Answer» Iron FILLINGS can be separated form the Sulphur, by either ROLLING a magnet over the MIXTURE. The iron fillings will be attracted by the magnet. Or to the mixture containing sulphur and iron fillings add carbon disulphide, this will dissolve sulphur, leaving behind iron fillings. |
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| 3259. |
Calculate the mole of NH3 produced when 0.75 mole of N2 reacts |
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Answer» As such, when you have 0.75 mol of NH3 molecules this means there is 0.75 mol of Nitrogen ATOMS (ie: n(N) = 0.75), and therefore the n(H) = 3 * 0.75 = 2.25mol. |
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| 3260. |
3. For any substance, why does the temperature remain constantduring the change of state? |
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Answer» Answer: The temperature REMAINS constant during the change of state because the HEAT energy which is supplied to change the state of matter is USED in breaking the intermolecular FORCES and other attractive forces. ... HENCE the temperature remains constant as all the heat is used up and no external heat is released or absorbed. |
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| 3261. |
calculate the mole percentage of methanol and water respectively in 60% by mass aqua solution of methanol |
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Answer» Calculate the mole PERCENTAGE of CH3OH and H2O respectively in 60 |
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| 3262. |
Why structure of po4 cannot be made like this |
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Answer» In the Lewis structure of PO43- there are a total of 32 VALENCE electrons. For the Lewis structure for PO4 3- you should TAKE formal charges into account to FIND the best Lewis structure for the MOLECULE. Remember, PO4 3- has a NEGATIVE three charge on the molecule |
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| 3263. |
Consider the following reaction N2 + 3H2 → 2NH. The rate of the reaction in terms of N, at T (0)-0.02 mole. litWhat is the value of(in mole it's at the samedtdttemperature?1) 0.022) 503) 0.064) 0 04 |
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| 3264. |
The thermal conductivity of a wire has a 4 mm diameter with 3 mm thickness is0.11 W/mK and the convective heat transfer coefficient between the insulating surface andair is 25 W/m².K . Calculate the percentage of change in the heat transfer rate if the criticalradius is used.(A) 0.45%(B) 0.75%(C) 0.55%(D) 0.85% |
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| 3265. |
4. It was found that the solution of cane sugar in water was hydrolysed to the extent of 25% in 60 minutesCalculate the time taken for the sugar to be 50% hydrolysed, assuming that the reaction is of the first order. |
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Answer» Answer: Explanation: 25% in 60 minutes So, 50% in x minutes 50 is doubled of 25 So, DOUBLE of 60 is 2*60 =120 minutes |
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| 3266. |
Which of the following are combination reactions? |
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| 3267. |
Nitrogen gas can be obtained by heating ( ammonium nitrate , Ammonium nitrite , Magnesium nitride , Ammonium chloride ) |
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Answer» ... |
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| 3268. |
What do you mean by ardous journey |
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Answer» HARD to ACCOMPLISH or achieve Hope It Will HELP You... |
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| 3269. |
Find the odd one out and give scientific reason for your answercondensation ,evaporation sublimation ,solidificationplease give scientific reason also |
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Answer» Answer: Explanation: All other are CHANGE of phase EITHER by absoprtion or liberation of heat. |
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| 3270. |
Chemistry is a necessary evil.explainanswer me quickly |
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| 3271. |
Matter is made from atom with _________ and particles.No wrong answer |
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Answer» Molecules Explanation: |
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| 3272. |
Find the odd one out and give scientific reason for your answersmagnesium, Mercury, manganese, silver please give scientific reason also |
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Answer» Mercury is only the LIQUID
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| 3273. |
Delivery tube meaning of chemistry |
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Answer» Explanation: The delivery tube CONVERTS any liquid or gas flowing through a Rubber tube into a free flow. A rubber tube can be connected to or from the TOP of the tube. The delivery tube is particularly useful for BUBBLING a gas from a gas cylinder or stoppered vessel through a liquid please MARK as BRAINLIEST |
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| 3274. |
The component C is extracted from 50 kg of feed using 20 kg of solvent B in a extraction process . The feed and solvent B contains 20% and 0% of C. If the extract |
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Answer» Answer: You will GET your answer with this second link ok and if you WANT to KNOW more about extraction you can click the first link thanks. Explanation: HTTPS://nitsri.ac.in/Department/Chemical%20Engineering/Extraction.pdf https://www.chegg.com/homework-help/questions-and-answers/component-c-extracted-50-kg-feed-using-20-kg-solvent-b-single-stage-extraction-process-fee-q56073953 |
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| 3275. |
Explain ozonolysis of Acetylene |
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Answer» ACETYLENE on OZONOLYSIS GIVES glyoxal. Explanation: |
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| 3276. |
Pentan-3-oneexplain |
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Answer» Answer: 3-Pentanone (also KNOWN as diethyl ketone) is a simple, SYMMETRICAL dialkyl ketone. It is a colorless LIQUID ketone with an odor LIKE that of acetone. It is soluble in about 25 PARTS water, but miscible with organic solvents. |
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| 3277. |
Variation of electronic configuration in groups |
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Answer» Answer: The ELECTRONIC configuration of an atom is the NUMERICAL representation of the arrangement of electrons distributed in the orbitals of the atom. This determines the position of an element in the periodic table and in turn its chemical BEHAVIOR. It explains how the atoms are held together by the chemical bonds, and the peculiar trends which are observed in the rows and columns of the periodic table. In this article, we will discuss the electronic configuration of ELEMENTS in the same periods and groups of the periodic table. Explanation: |
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| 3278. |
Find the odd one out and give scientific reason for your answerair,water,cloud, fireplease give scientific reason also |
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Answer» cloudddddddddddddddddddddddddddddd |
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| 3279. |
Mercury is distilled |
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| 3280. |
A distillation column is used to separate the liquid mixture containing 40 mol % ofmethanol and 60 mol % of water. The overhead and bottom products are found to contain95 mol % of methanol and 97 mol % of water respectively. The feed consists of 3/4th vaporand 1/4thliquid Calculate the slope and interceptof q-line.a) Slope = 0.533, intercept = -0.333b) Slope = -0.533, intercept = 0.333c) Slope = 0.333, intercept =-0.533d) Slope = -0.333, intercept = 0.533 |
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Answer» Answer: ggg to be a PERSON who is interested in the WORLD to me and I will show you my resume for your SATISFACTION is our first |
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| 3281. |
The solubility of A₂ B-2x 10-3 mol L- 3What is Solubility Product |
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| 3284. |
Find the odd one out and give scientific reason for your answerAir,water,cloud, fireplease give scientific region also |
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Answer» |
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| 3285. |
Define production. Explain are the factors of production. With the help of an example explain the process of creation of form utility |
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Answer» Production is the process of making, harvesting or creating something or the amount of something that was MADE or harvested.
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| 3286. |
A 100 kg/s of water is heated from 50 °C to 80°C. The water is passed through a 0.6 mdiameter of pipe. The inner surface of pipe is maintained at 150 °C. Calculate theconvective heat transfer coefficient. Use Dittus-Boelter equationData for water at mean bulk temperature:kgdensity (P) = 1000mJspecific heat (C) = 4200kg. °CWthermal conductivity (k) = 5 –mºc2mkinematic visocity (v) = 3x10SWa) heat transfer coefficient = 6053.55.mºcWb) heat transfer coefficient = 5274.12Wc) heat transfer coefficient = 1324.80mººcd) heat transfer coefficient = 4254.38mºc |
Answer» it's 9.28937107720261gsiwbwiw |
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| 3287. |
Find the odd one out and give scientific reason for your answer Air ,water ,cloud , fireplease give scientific reason also |
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| 3288. |
It is found that Aep 4.0-10 dm-mol's for the reaction NO + Cl₂-NOCI+ Cl at 298 K. Use oth 0.675 nm² to estimate the P factor for the reaction. My 14 g/mol: Mo 16 g/mol: Mo 35.45 g/mol Nag 6.022 1023 /mol R-8.314J/mol.K ko 1.38 x 1023/particle.K Select one: O a. 0.569 Ob. None of the choices is correct Oc 1,80e-11 O d. 0.0180 O e 150 |
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Answer» Communication is simply the ACT of transferring information from one place, person or group to another. Every communication involves (at least) one sender, a message and a recipient. ... These include our emotions, the cultural situation, the MEDIUM used to COMMUNICATE, and even our LOCATION. |
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| 3289. |
(i)Anelementhasatomicmass93gmol-1anddensity11.5gcm-3.IftheedgelengthofitsUnitcellis300pm,identifythetypeofunitcell. |
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Answer» nnsnennzmdjhdudjdhsjsjsjdjsjdhsjdjdhdnjdkehdjdhdjdhdjdhdkd |
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| 3290. |
2. Which physical quantity has its unit as J/C? Is it a scalar or vector?lielectrics |
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Answer» Answer: ELECTRIC potential has SI UNIT J/C and it is a scalar quantity. Explanation: |
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| 3291. |
What happens to the colour of the solution after some time? |
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Answer» Answer: after some time, the BLUE colour of the copper sulphate SOLUTION turns GREEN.. |
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| 3292. |
Decomposition of the waste is the _____________ reaction |
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Answer» DECOMPOSITION of the WASTE is the CHEMICAL REACTION |
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| 3293. |
Which of the following is the not the evidence if chemical reactionChange in state Change in shape Change of colour Formation of percitipate |
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| 3294. |
3. What are the raw materials required to prepare Nylon fibre?give ❤= take ❤ |
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Answer» Answer: Raw materials used in nylon are petroleum,natural GAS,lime stone, coal,WATER,acetylene etc. polyster is made using purified terephthalic ACID and monoethelyne glycol etc. >> Raw material : Naturally occurring POLYMER cellulose from WOOD pulp. || हर हर माहादेव || |
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| 3295. |
Can someone help me with this Hw question |
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Answer» SRY idk Explanation: yeajabdhsjsnsjjssnkszjsjjwksisiwjsnnzospapwksjnxkzksksmsnejskzksjjssjsjwjsikskwksmskwpspsos |
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| 3296. |
Oxide (NOCopper (II) sulphide + Oxygen Copper (11) oxide + Sulphur dioxideis the chloride of metal Write down the formule sulphate and h |
Answer» Answer :-Mark As Brainliest |
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| 3297. |
If hydrocarbon burns with a clear blue flame in presence of excess oxygen the products formed are |
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Answer» when a HYDROCARBON fuel is burnt, it gives out carbon dioxide and WATER VAPOURS. HYDROCARBONS are made up of carbon and hydrogen. When they are burnt in the presence of oxygen, carbon REACTS with oxygen to form carbon dioxide and hydrogen reacts with oxygen to form water vapours. carbon dioxide and carbon monoxide plz mrk as brainliest |
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| 3298. |
Why oxygen tanks used by Scuba Divers are filled with air and diluted Helium to avoid bends ? |
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Answer» Answer: HENCE scuba diver use a TANK FILLED with air diluted with helium (11.7% helium, 56.2% nitrogen and 32.1% oxygen) to avoid bends as well as toxic effects of high concentration of nitrogen in the blood because of increase in PRESSURE underwater and decreasing pressure towards the WATER surface. ❤MissAstonish❤ |
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| 3299. |
What is the meaning of genre , associatedthanks rating down please thanks my answer i will return |
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Answer» Explanation: I gave you THANKS PLS GIVE me three thank you very MUCH |
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| 3300. |
Calculate the molar solubility of Ag2CrO4 in pure water if the solubility product constant for silver chromate is 1.1 x 10^-12 ? |
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Answer» see the above PIC that is your CORRECT answer of your question DEAR |
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