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.
| 48251. |
What happened when ethyl bromide reacts with silver acetate? |
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Answer» hiExplanation:So, the silver acetate is the REAGENT in which the acetate ION is the negative charge and displaces the BROMIDE ion in the ethyl bromide. In this REACTION, an ester is FORMED. The product formed will be ethyl acetate or ethyl ethanoate. |
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| 48252. |
molarity of pure methanol (ch3oh) with density dg/mol is : (atomic mass of h = 1, c = 12, o = 16) a) 21/d b) 1000d c) 31.25d d) 25/d |
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| 48253. |
प्रतिदीपती सफुर्डिप्ती बिकर्नो को जेदलोंसिकी आरेख को समझाए |
| Answer» HELLOGOOD morningMark me BRAINLIST PLEASE. | |
| 48254. |
Identify the general representation of a combination reaction. A+B → AB I A+B → B+C AB A+B A+B+C → X+Y |
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Answer» (i) COMBINATION reaction (II) Displacement reaction (iii) Decomposition reaction(IV) DOUBLE displacement reaction |
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| 48255. |
if the reaction of 4gram of mg nitride with excess of water produced 3.2 gram of mg oxide what is percentage of yield of the reaction? |
| Answer» ABSOLUTELY difficultyou COULD ASK Goo.gle for thatit will ANSWER your question | |
| 48256. |
Copper+nitric acid=copper nitrate+nitric oxide+water |
| Answer» CU + HNO3 = Cu(NO3)2 + NO + H2O | Chemical reaction and equation. hello FRIEND hope it helps you | |
| 48257. |
Does starch dissolve in water to give a solution |
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Answer» starch is insoluble in water, but some TYPES of starch eg., SOLUBLE starch or corn starch will dissolve in water provided they are made into a paste first with COLD water then DISSOLVED in boiling water |
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| 48258. |
With the help of balanced chemical equations explain what happens when ethanol is heated with (ii) excess concentrated |
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Answer» When ETHANOL is heated in the presence of alkaline potassium permanganate or acidified potassium DICHROMATE as OXIDISING agent, then ethanoic ACID is formed.hope it helps dear |
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| 48259. |
If sodium loss one electron its ion reaches nearest noble gas is |
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Answer» Here's your answer :NeonSodium WOULD become STABLE if it could lose an ELECTRON and ATTAIN the configuration of neon (2,8). Every atom has the tendency to ACQUIRE the configuration of the nearest noble gas and become stable. |
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| 48261. |
What is the colour of Lu4+ |
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Answer» orange red EXPLANATION:LA3+ is COLORLESS but Lu4+ is orange red |
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| 48263. |
Picture of methane molecule covalent bond |
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Answer» hiExplanation:the ANSWER is in the ATTACHMENT |
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| 48264. |
What do mean by carbohydrates ???? |
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Answer» hiExplanation:A carbohydrate is a naturally occurring compound, or a derivative of such a compound, with the GENERAL chemical formula Cx(H2O)y, made up of molecules of carbon (C), hydrogen (H), and OXYGEN (O). Carbohydrates are the most widespread organic SUBSTANCES and PLAY a VITAL role in all life. |
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| 48265. |
With the help of balanced chemical equations explain what happens when ethanol is heated with (i) alkaline solution of potassium permanganate. |
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Answer» When Ethanol is heated in the PRESENCE of ALKALINE potassium PERMANGANATE or acidified potassium dichromate as oxidising agent, then ethanoic acid is FORMED. |
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| 48267. |
Consider a hypothesis H-like atom, the wavelength in Amstrong for the spectral lines for the transition from n=p to n=1 is given as wavelength =1500p^2/p^2 -1 where p>1find the minimum and maximum wavelength |
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Answer» λ= P 2 −11500p 2 = 1− p 2 1 1500 A ⋅ λ max at p=2 is 2000A ⋅ λ min at p=∞ is 1500A ⋅ E 4 = 150012400 (1− p 2 1 )= 15124 × 1615 E 3 = 15124 (1− 91 ) = 15124 × 98 E 2 = 15124 (1− 41 ) = 15124 × 43 =6.2 eVNow,E 4 −E 3 = 15124 ×( 1615 − 98 )= 15124 × 1447 = 144×15868 =0.40 eVand, E ∞ =IONISATION EnergyIonisation ENERGY=−E ∞ =− 15124 =−8.27 eVIonisation Potential= −eIonisation energy Ionisation Potential=8.27 V |
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| 48268. |
Exaplain sn1 mechanism with energy profile diagram? |
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Answer» Energy DIAGRAM of SN1 mechanismBecause SN1 is a multiple-step REACTION, so the diagram has multiple curves, with each step can be REPRESENTED by one curve. Out of the three steps, the activation energy for step 1 is the highest, therefore step 1 is the slowest step, that is the rate-determining step.Explanation:this is your CORRECT answer |
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| 48269. |
When 14.5g of SO2 reacts with 21g of O2, what will be the theoretical yield and percentage yield of reaction if the actual yield is 12g? |
| Answer» PLEASE MARK me Billi EST home STAY safe | |
| 48270. |
Kinetic energy of photo electron depends on______ of incident radiation(A) Frequency(B) Velocity(C) Intensity(D) All the above |
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Answer» FrequencyExplanation:PLEASE MARK it BRAINLIEST ANSWER |
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| 48271. |
How many biodiversities are in india explain |
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Answer» Summary. As we have learned, a region with a large NUMBER of SPECIES is considered to be biodiverse. There are 36 biodiversity hotspots on our PLANET, and these areas are DAZZLING, unique, and full of LIFE. |
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| 48272. |
In photo electric effect, when the frequency of incident light is doubled, kinetic energy is(A) halved(B) doubled(c) more than doubled(D) remains same |
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| 48273. |
Why is the conversion of ethanol to ethanoic acid as oxidation reaction |
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Answer» It is an oxidation REACTION as ethanol is converted to ethanoic ACID since the hydrogen atom is REMOVED and oxygen is added. To make ethanal, an H2 MOLECULE is removed from ethanol in the first step. The reaction is an oxidation reaction since the LOSS of hydrogen is an oxidation reaction.Explanation:hope it helps you |
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| 48274. |
The electronic state in which the hydrogen atom can absorb a photon but cannot emit a photon is(A) 2p(B) 3s(C) 1s(D) 4p |
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Answer» C) 1sExplanation:The ELECTRONIC state in which the hydrogen ATOM can absorb a photon but cannot emit a photon is MARK as BRAINLIST ok |
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| 48275. |
Which pair of specices have same percentage of carbon |
| Answer» CH3COOH and C6H12O6 pair of species have same PERCENTAGE of carbon.Explanation:HOPE it HELPS you | |
| 48276. |
What is the mass of one silicon atom (relative atomic mass = 28.1)? |
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| 48277. |
I wanna know the reason why (d) is correct answer |
| Answer» EXPLANATION:At bridge head, RESONANCE can't take PLACE SINCE planarity is not achieved at bridge head CARBON which will exist as non-planar. | |
| 48278. |
How many atoms are there in 0.2 mol of methane molecules, CH4? |
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Answer» the value of 1 mole of ANYTHING is 6.022×and10^23 HOPE it helpful to you |
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| 48279. |
The wavelength of first member of Balmer series of a hydrogen atom(R=1.08 x 10' m)(A) 4400 A(B) 6600 A(C) 7700 A(D) 8800A0 |
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Answer» The wavelength of the FIRST member of the Balmer SERIES of HYDROGEN is 6563 × 10^-10mExplanation: |
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| 48280. |
Difference between ions and moleculeplease tell fast |
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Answer» Molecules are neutral PARTICLES made of two or more ATOMS bonded together. An ion is a POSITIVELY or negatively CHARGED particle. |
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| 48281. |
What happens to the boiling point of water in Fahrenheit? |
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Answer» It seems like one of those BASIC science facts: Water boils at 212 degrees Fahrenheit (100 degrees Celsius), right? WELL, not always. It DEPENDS on where you're doing the boiling. In fact, water will boil at about 202 degrees in DENVER, due to the lower air pressure at such high ELEVATIONS. |
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| 48282. |
The spectrum obtained from incandescent solids is(A) Line(B) Continuous(C) Band(D) Discontinuous |
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Answer» LoodokmmkomwdjomwjicnExplanation: |
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| 48283. |
Answer the questions 1. Explain the activity that the temperature ignition temperature is when attend then only any combustible material catches fire.2. Define ignition temperature and write the ignition temperature of the white phorphorurs. Why white phorphorurs catches fire continuously during summer.3. Write the condition quite for the combustion.4. Why the flaming of the burning candle course of? when we flow over in strongly?5. tip of matchstick has more amount of red phosphorus and also some amount of KCIO3 which an oxidising agent.please help me the solution of Sciencei. No fakeii. No mistakeiii. No spamiv. Give me a right answer |
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Answer» tion:Ignition TEMPERATURE: It is the minimum temperature to which a COMBUSTIBLE SUBSTANCE must be heated, before it catches fire. THEREFORE, we see that a combustible substance cannot catch fire as long as its temperature is lower than its ignition temperature e.g. Ignition temperature of phosphorus is 35 °C. |
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| 48284. |
Cac2 Lewis dot structure. provide a diagram |
| Answer» OK BYE bye bye bye bye bye bye bye bye bye | |
| 48285. |
Draw the Fischer and Newman projection formula of (2R,3R)- 3-Bromo- 2- chlorobutanoic acid. |
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| 48286. |
Cac2 Lewis dot structure |
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Answer» tion:here is the LEWIS dot structure of CAC2 ( calcium CARBIDE ) hope it HELPS you.... |
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| 48287. |
CH4 molecular weight |
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Answer» 16.04 g/molhope this HELPS you |
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| 48288. |
Solubility of sodium nitrate at 20degree celsius |
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Answer» hiExplanation:From the diagram, the SOLUBILITY at 20 degree C is about 85 g/100 mL. The SOLUTION is saturated at this temperature. |
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| 48289. |
What is the meaning of concentration of solution? |
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Answer» hiExplanation:The concentration of a SOLUTION is a MEASURE of the AMOUNT of solute that has been dissolved in a given amount of solvent or solution. A CONCENTRATED solution is one that has a relatively large amount of dissolved solute. A dilute solution is one that has a relatively small amount of dissolved solute |
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| 48290. |
Water has high boiling point then alcohol why? |
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Answer» as a high boiling point than that of alcohol because the hydrogen bonds present within the molecule are stronger than the ones in case of alcohol. Therefore, a GREATER AMOUNT of energy or TEMPERATURE is required to break the bonds in order to BOIL water.Hope it helps u...Do mark as BRAINLIST... |
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| 48291. |
PLS TELL THE ANSWERS |
| Answer» 2. d is the CORRECT answerExplanation:Copper is best conductor and IRON conducts HEAT better than aluminum | |
| 48292. |
Q-5 Clarify changes into physical and chemical change. a)Curdling of milk. b) Sublimotion of Comphou. c) Rotting of eggs. d) SHAPING of glass by Heat. e) Rusting of Iron. f) Ripening of fruits. g) Melting of Ice. h) Germination of seed. I) Formation of curd from milk. j) Magnetisation of Iron. k) Formation of Vapours. l) Glowing of Bulb. |
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Answer» a) PHYSICAL change B) -c) CHEMICAL change d) physical change e) chemical change f) chemical changeg) physical change H) physical change I) chemical change j) physical changek) physical changel) chemical change |
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| 48293. |
The frequency of spectral line obtained when the electron in n = 3 of hydrogen atomdrops to ground state is(A) 2.92 x 1015 Hz(B) 2.92 x 1013 H2(C) 2.92 x 1014 Hz(D) 2.92 x 1016 H |
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| 48294. |
The suitable condition for the emission of photoelectron with certain kinetic energy(A) v < VO(B) V > VO(C) υ = 0(D) All the above |
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Answer» A)Photoelectric current in a photocell increases with increases in frequency, λ1 = hcϕ As per equation,The intensity of light increases, the saturation current increases, This is because a larger number of photons now fall on the metal surface and HENCE a larger number of electrons interact with photons. The number of electrons emitted increases and hence the current increases.B) We know,tanθ= ehc The slope of the photocurrent is same for every surface.C)The maximum kinetic energy of a stream of the photoelectron is determined by the measuring the stopping potential (the applied VOLTAGE needed keep the photoelectrons trapped in the photoemissive surface).Increases linearly with the frequency of the incident light above the threshold frequency is independent of the intensity of the incident light.Explanation:c is the ANSL hope it will help u ☺️ |
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| 48295. |
Who is smallest Atomic Number? |
| Answer» HELIUM is the SMALLEST ATOMIC numberExplanation:HOPE it HELPS! | |
| 48296. |
The number of atom present in a molecule of an element is called its _______ |
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Answer» AtomicityExplanation:the number of ATOM PRESENT in a molecule of an ELEMENT is CALLED its _______ |
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| 48297. |
ऊर्जा के स्थान्तरण अभिक्रिया को उदारहण देकर समझाइये |
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Answer» के लिये कोयले में संचित रासायनिक उर्जा को जलाकर उससे उष्मीय उर्जा प्राप्त की जा सकती है। इस उष्मा से पानी को उबालकर वाष्प बनाकर उससे वाष्प टरबाइन चलाकर इसे यांत्रिक उर्जा में बदला जा सकता है। इस टरबाइन से कोई विद्युत जनित्र चलाकर इस यांत्रिक उर्जा को विद्युत उर्जा में बदला जा सकता है।please MARK me BRAIN mark LIST |
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| 48298. |
The strongest interparticle attraction exists between particles of a |
| Answer» SOLID :)EXPLANATION: | |
| 48299. |
પાણીનું ઉત્કલનબિદુ ફેરનહીટ માપકમમા શું થાય? |
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| 48300. |
A member of alkali metal family whose most stable ion contains 54 electrons forms a compound with sulfur. What is the correct formula for this compound? |
| Answer» HHH you SHOW up for just don't have to YUR U SEVA | |