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.
| 51151. |
Hi what is the melting point of Salt |
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Answer» is the melting point of salt. WOULD you like to be my friend and don't LEAVE |
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| 51152. |
Atomic number of an element is 37. The valu e of (n + l) for the orbital from which the electron is removed to form +1 ion of its is |
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Answer» 5Explanation:The Electronic Configuration of RUBIDIUM(Atomic no:37) 1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^2 4p^6 5s^1so the one electron should be removed from outermost shell( 5s^1) the value of (n+L) for this is= 5+0=0As value of l for s orbital is 0. |
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| 51153. |
Which one of the these is not a pure compound |
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Answer» water is a homogeneous mixture of CARBON dioxide and water. It is not a pure SUBSTANCE. Carbon dioxide is a COMPOUND while oxygen and zinc are elements which are a TYPE of pure substance.Hope it will be helpful for you.. Please mark me as a brainliest answer ~by ayushi |
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| 51154. |
An element is made up of only one kind of element . |
| Answer» ATOMS EXPLANATION:PLZ MARK me as BRAINLIST | |
| 51156. |
Write the chemical formulae of the following. (a) magnesium chloride(b) calcium oxide(c) copper nitrate(d) aluminium chloride(e) calcium carbonatenote- use and show the methods of criss-crossed. |
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Answer» The chemical formula of a compound is a SYMBOLIC representation of its chemical composition. Chemical formulae provide insight into the elements that constitute the molecules of a compound and also the ratio in which the atoms of these elements combine to form such molecules.(a) Magnesium chloride (MgCl2)An inorganic compound consisting of one magnesium and two chloride ions. Magnesium chloride is used to TREAT or prevent magnesium deficiency (lack of natural magnesium in the body).(b) Calcium oxide (CaO)Calcium oxide (CaO), commonly known as quicklime or burnt LIME, is a widely used chemical compound.(c) Copper nitrate Cu (NO3)2Cupric Nitrate is a bluish-green, odourless crystalline (sand-like) material.(d) ALUMINIUM chloride (AlCl3)Aluminium chloride (AlCl3) is the main compound of aluminium and chlorine. It is used to treat excessive sweating, also called hyperhidrosis.(e) Calcium carbonate (CaCO3)Calcium carbonate also is used as an antacid to relieve heartburn, acid indigestion, and upset stomach.Explanation:I hope it's helpful for you ☺️ |
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| 51157. |
What is mole concept |
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Answer» The mole concept is a convenient method of EXPRESSING the AMOUNT of a substance. Any MEASUREMENT can be broken down into TWO parts – the numerical magnitude and the UNITS that the magnitude is expressed in. ... It primarily focuses on the unit known as a 'mole', which is a count of a very large number of particles. |
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| 51158. |
مر CU ན་ ༢༢ & elatively larger positive explain VSPER theory with Examples |
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Answer» jajsbhsbddjdbsnsjsjs |
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| 51159. |
The property of liquids and gases by which they have a tendency to flow- CompressiblityDensityRigidityFluidity |
| Answer» GIVE me THANKS and BRILIANT MARKS. | |
| 51160. |
Titrant used in redox titration |
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Answer» As in acid–base titrations, the endpoint of a redox titration is OFTEN detected using an INDICATOR. POTASSIUM PERMANGANATE (KMnO₄) is a popular titrant because it serves as its own indicator in ACIDIC solution.Explanation:Hope that helps you |
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| 51161. |
Homogeneous mixture is - iron,bronze , 24 carat gold, oxygen |
| Answer» OPTION A IS CORRECTEXPLANATION:THANKS | |
| 51162. |
Hello everyone! How u all? (a) Explain any three directional movements in plants. (b) How brain and spinal cord are protected in human ? (c) Name the master gland.NOTE- give answer of all questions not a single question only. |
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Answer» a) This movement is called as Tropic Movement. Phototropism: movement of plant towards or away from the light. Geotropism: movement of plant parts towards the earth or away from it. Hydrotropism: movement of plant parts towards or away from any source of water.b)The brain and SPINAL cord are protected by bony structures — the skull and spinal column. Meninges are MEMBRANES that cover and protect the brain and spinal cord. There are three layers of meninges: Dura mater, which is CLOSEST to the bone. Explanation:Drop some thanks.. |
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| 51163. |
एंट्रोपी पद की व्याख्या |
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Answer» ऊष्मागतिकी में, एन्ट्रॉपी एक भौतिक राशि है जो सीधे मापी नहीं जाती बल्कि गणना (कैल्कुलेशन) द्वारा इसका मान निकाला जाता है। इसका प्रतीक S है। किसी निकाय की कुल ऊर्जा का वह भाग जिसे उपयोग में नहीं लाया जा सकता (दूसरे शब्दों में, कार्य में नहीं बदला जा सकता), उस निकाय की एन्ट्रॉपी कहलाती है।एंट्रोपी, प्रति यूनिट तापमान प्रणाली की थर्मल ऊर्जा का उपाय जो उपयोगी कार्य करने के लिए अनुपलब्ध है। क्योंकि काम आदेश दिया आणविक गति से प्राप्त किया जाता है, ENTROPY की मात्रा भी आणविक विकार, या यादृच्छिकता का एक उपाय है, एक प्रणाली के . |
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| 51164. |
CaBr (1) Indicate which element is reduced in the following reactions: d. Ca(s) + Br2(g) b. Ací + zn Znal 2(5) +2 -2 +H |
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| 51165. |
What is chemicalssssss? |
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Answer» A chemical by DEFINITION is any substance consisting of MATTER; this includes solids, liquids, and gas. Chemicals can either be of a pure substance or a mixture of SUBSTANCES. A chemical substance such as water (H2O) is a pure chemical because it has the same molecules and combination THROUGHOUT its STRUCTURE. |
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| 51166. |
What is change in colour observed in phenol in presence of oxygen. explain with reaction. |
| Answer» HOPE it helpsExplanation:Phenol turns pink in colour on exposure to AIR due to slow OXIDATION. Phenol gets oxidised to QUINONE and then quinone combines with the phenol to GIVE an addition product known as phenoquinone which is pink in colour | |
| 51168. |
What is common salt - element , compound or mixture? explain |
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Answer» substance consists of a single element or compound. ... A mixture, however, is made up of different compounds and/or ELEMENTS. When salt is added to water to MAKE saltwater, it BECOMES a mixture . this, common salt is sodium chloride.. |
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| 51169. |
Identify the types of chemical reaction occurring during the combustion of fuel: a) Oxidation & Endothermic reaction b) Decomposition & Exothermic reaction c) Oxidation & Exothermic reaction d) Combination & Endothermic reaction |
| Answer» C) OXIDATION and ExothermicExplanation:BURNING fuels produces heat ENERGY. ALSO combustion is nothing but oxidation of various substances. | |
| 51170. |
B. Calculate the number of molecules present ins moles of glucose, C6 H12 O6 |
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Answer» C6hahshshshsjsusjjsjsjsjs |
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| 51171. |
Pressure of a mixture of 16g O2 and 2g of H2 confined in a vessel of 22.4L at 0°C is. |
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| 51172. |
Write a balanced equation to show the basic property of ammonia . |
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Answer» anced chemical equation for the FORMATION of AMMONIA GAS by the REACTION between nitrogen gas an HYDROGEN gas is given. N2+3H→2NH3. |
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| 51173. |
. Compare alkali and alkaline earth metals on the basis of ionization enthalpy property |
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Answer» Ionization enthalpy: Alkaline earth metals have smaller atomic size and HIGHER EFFECTIVE nuclear charge as COMPARED to alkali metals. This causes their FIRST ionization enthalpies to be higher than that of alkali metals. However, their second ionization enthalpy is less than the CORRESPONDING alkali metals.If you find this helpful, mark me branliest.Thank you!!! |
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| 51175. |
ग्लेशियल एसिटिक एसिड क्या है |
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Answer» पुनर्जागरण के समय कुछ धातु एसिटेट (मुख्य रूप से कॉपर (II) एसिटेट) के सूखे आसवन से ग्लेशियल एसिटिक अम्ल बनाया गया। 16वीं शताब्दी में जर्मन कीमियागर एन्ड्रीस लिबावियस ने ऐसी ही एक विधी का वर्णन किया और उसने इस तरह से बने ग्लेशियल एसिटिक अम्ल की तुलना सिरका से बने अम्ल से की।Explanation:HOPE IT HELPSPLEASE MARK ME AS BRAINLIAST |
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| 51177. |
What is the iupac name ch3ohcl |
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Answer» chloromethane______________________ |
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| 51178. |
Differentiate between molar and molecular mass |
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Answer» Molecular mass is the mass of a MOLECULE of a SUBSTANCE. It is ALSO known as Molecular weight. Molar mass is the mass of 1 MOLE of a substance or Avogadro's number of the molecules of that substance. |
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| 51179. |
Compare the Alkali metals and Alkaline Earth metals on the following points - (i) Reaction with N2 (ii) Heat effect on carbonate(iii) Solubility of sulphates in water |
| Answer» TION:SORRY I don't KNOW the ANSWER | |
| 51180. |
What is Stereochemistry? |
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Answer» the branch of chemistry concerned with the three-dimensional ARRANGEMENT of ATOMS and MOLECULES and the effect of this on CHEMICAL reactions.Explanation:Plz make me brainliest |
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| 51181. |
What is Reductionplease amswer |
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Answer» ion or FACT of making SOMETHING smaller or less in amount, degree, or SIZE. |
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| 51182. |
Al mass of Its atom? the atomic mass of is in fraction. What does this mean an ebrisht |
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Answer» The atomic MASS of an element is in FractionThe atomic MASSES of most elements are fractional because they EXIST as a MIXTURE of isotopes of different masses |
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| 51183. |
Vi) সবচেয়ে হালকা পরমাণুটি কি? |
| Answer» HI browhere are you from | |
| 51184. |
Write the relation between rate constant and half life of first order and zeorth order reaction |
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| 51185. |
How to show the liberation of hydrogen gas on reaction between metal and acid |
| Answer» THINK this has HELPED you consider GIVING a ❤ and please RATE | |
| 51186. |
Name the change of state when wax kept in sunshine |
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Answer» Decompositiom REACTION |
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| 51187. |
Acidic strength is directly proportional to √Ka , Prove ! |
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Answer» tion:Acid strength is neither DIRECTLY nor inversely proportional to %s character. It increases as s character increases, but the relation is not a DIRECT PROPORTIONALITY.The usual measure of acid strength is pK a .There is a GOOD correlation between pK a and % character. The acidity increases linearly with increasing s character.However, the relation is not a direct proportionality because the graph does not go through the origin. pls FOLLOW me and mark me brilliant |
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| 51188. |
70) The incorrect statement related to the thyroxin hormone is. a) It regulates fat metabolism b) It’s deficiency leads to goiter c) It is secreted by parathyroid gland d) Iodine in the food is essential for its production |
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Answer» tion:Iodine is the essential ELEMENT required for the proper functioning of thyroxine hormone which is produced by the thyroid gland. In the absence of iodine element, the gland will not function properly and the deficiency of thyroxine will THUS result in a disease called as "goitre". The thyroid HORMONES also KNOWN as thyroxine are tyrosine-based hormones produced by the thyroid gland that is primarily responsible for regulation of carbohydrates, protein and FAT metabolism. Iodine is necessary for the synthesis of thyroxine.Therefore, the correct answer is option A.solution |
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| 51189. |
[1 mole of O2=2 mole atoms of O] is this statement are true or not? |
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Answer» here is the ANSWEREXPLANATION:PLEASE MARK as BRAINLIST |
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| 51190. |
What is gravitational Force |
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Answer» gravity, also CALLED GRAVITATION, in mechanics, the universal FORCE of attraction acting between all matter. ... On Earth all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth's mass EXERTS on them. Gravity is measured by the acceleration that it gives to freely falling objects.Explanation:please do thanks and follow and MARK as brainliest |
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| 51191. |
What are the results of the electrolysis of potassium iodide (aq) +KI (aq) |
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Answer» here is the ANSWEREXPLANATION:PLEASE MARK as BRAINLIST |
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| 51192. |
Powdercreams and other cosmetics cannot be made by chemical methods true or false |
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Answer» trueeeeeeeeeeeeeeeeeeee |
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| 51193. |
What is centrifugation explain breifly |
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Answer» Centrifugation is a technique used for the separation of particles from a SOLUTION according to their size, shape, density, viscosity of the medium and rotor speed. The particles are SUSPENDED in a LIQUID medium and placed in a centrifuge tube. ... Centrifugation is making that natural process much FASTER. |
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| 51194. |
example of solutions containing non volatile component and a volatile component explain how will you obtain non volatile component from such a solution |
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Answer» Evaporation is the process of VAPORIZING the SOLVENT to obtain the SOLUTE. Evaporation is used to separate the mixture containing the NON volatile soluble solid from its volatile liquid solvent. We can separate salt from a solution by evaporating the water from the solution. |
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| 51195. |
Ex. 8. What will be the volume occupied by 1 mole atom of a (i) monoatomic gas and (ii) diatomic gas at NTP? |
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Answer» tion:As we know, 1 MOLE of gas OCCUPIES 22.4L at NTP. ... Thus, we can SAY that 1 mole of O2 or 2 mole atoms of oxygen occupy 22.4 litres at NTP. Therefore, 1 mole ATOM of oxygen occupies =22.42=11.2 litres at NTP. This means that the volume occupied by 1 mole atom of diatomic gas at NTP will be 11.2 litres.mark me as brainlist , thank me 100% fol|ow back |
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| 51196. |
Kindly explain me that what is meant by independent existance of molecules but not of atoms? |
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Answer» tion:Smallest PARTICLE of an element or a compound which is capable of independent EXISTENCE is CALLED molecule.A molecule is formed when two or more atoms join together chemically.MOLECULES of elements like noble gases such as helium,NEON etc are made up of one atom only(molecules are capable of independent existence while atoms are not capable of independent existence).Only in these case atoms are capable of independent existence.Noble gases are monoatomic. |
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| 51197. |
True or false Rotation and revolution are two types of circular motion. |
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Answer» FALSEHERE YOU GOPLEASE MARK ME THE BRAINLIEST |
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| 51198. |
2. सांगा पाहू १ ) धातु कोठे सापडतात ? उत्तर |
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Answer» ाश्मयुगात सापडला आहे. |
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| 51199. |
What is sedimentation? |
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Answer» Sedimentation is the tendency for particles in SUSPENSION to settle out of the fluid in which they are ENTRAINED and come to rest against a barrier. This is DUE to their MOTION through the fluid in response to the forces acting on them: these forces can be due to gravity, centrifugal acceleration, or electromagnetism. |
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| 51200. |
What kind of change is observed in the volume of matter on heating or cooling?Why is water exceptional. |
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Answer» when WATER is heated it EXPANDS or INCREASES in volume .when water increases in volume it becomes less DENSE .As water cools it contract and decreases in volume.when water decreases its volume it becomes more dense . |
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