This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
the total number of electrons having quantum numbers n = 4, |m_l| = 1 |m_s| = 1/2 in an atom is_______ AND YEAH ANSWER IS 12 PLEASE EXPLAIN HOW |
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Answer» For l = 0, mL =0For l = 1, mL = -1, 0, +1For l = 2, mL = −2, −1, 0, +1, +2For l = 3, mL = −3, −2, −1, 0, +1, +2, +3ms = + 1/2 (For each sub-shell)From this we CONCLUDE that, there are 3 ORBITALS and each ORBITAL CONTAINS 1 electrons. So, the number of electrons are, 3×1=3 electrons.Hence, the number of electrons in an atom can be, 3 electrons |
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| 2. |
Answer these questions please spam will be reported |
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Answer» is an arrangement of information or data, typically in rows and columns, or POSSIBLY in a more COMPLEX structure. ... Tables appear in PRINT media, HANDWRITTEN notes, computer software, ARCHITECTURAL ornamentation, traffic signs, and many other places. |
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| 3. |
What is chemical change ( Give brief explanation ) ? |
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Answer» Chemical CHANGES occur when a substance combines with another to form a new substance, called chemical SYNTHESIS or, alternatively, chemical decomposition into two or more different SUBSTANCES. These processes are called chemical reactions and, in GENERAL, are not reversible EXCEPT by further chemical reactions.. |
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| 4. |
Cold HI on treatment with CH3-CH2-O-CH2-CH3 gives |
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Answer» CH 3 −CH 2 −O−CH 2 −CH 3 + excess2HI → ETHYL iodide2CH 3 CH 2 I +H 2 Owhen HI is present in limited quantity CH 3 CH 2 I and CH 3 CH 2 OH both are FORMED. |
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| 5. |
1. Which separation techniques will you apply for the separation of the following?(a) Sodium chloride from its solution in water.(b) Ammonium chloride from a mixture containing sodiumchloride and ammonium chloride.(c) Small pieces of metal in the engine oil of a car.(d) Different pigments from an extract of flower petals.(e) Butter from curd.(f) Oil from water.Tea leaves from tea.(h) Iron pins from sand.(i) Wheat grains from husk.(1) Fine mud particles suspended in water.please help me |
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Answer» tionsublimationfiltrationchromatographyseparating FUNNEL filtrationmagnetic separationmagnetic separationsedimentationplease MARK me as BRAINLIEST |
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| 6. |
Chemistry class 12th tamil nadu state board chapter name : carbonyl compounds and carboxylic acids |
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Answer» b. is the CORRECT answer EXPLANATION:please follow me and give THANKS |
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| 7. |
the smallest angle of bragg scattering in PCl is 28.4 degree for 0.3 nm x rays. find the distance between atomic planes in PCl |
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| 8. |
What is chemistry????????Koi thanks dedo |
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Answer» the SCIENTIFIC study of the structure of substances and what happens to them in DIFFERENT CONDITIONS or when MIXED with each other |
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| 9. |
Valency of magnesium...Spam karna allowed ✅ |
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Answer» tion:Magnesium has valency EQUAL to 2 + because the ELECTRONIC configuration of Mg is [2,8,2]. The nearest noble gas to magnesium is neon with electronic configuration of [2,8], to achieve this stable electronic configuration Mg can lose 2 valence electrons, hence its valency is 2 + . |
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| 10. |
Which of the following will be decarboxylated most easily? a (1) CH, -C-OH (2) CH = CH - CH2 - COOH CH, - COOH (3) T COOH (4) CH3 - CH2 - COOH |
| Answer» TION:SEEE it U will UNDERSTAND | |
| 12. |
Tu hoo gya un ban tog abb bhabhi se bhi baat krlo ok and ya siso i am Ankit and mai toh cheene khaya he nhi mere bdle tu abhi kha le ok |
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Answer» @❥╬٨ـﮩﮩ❤٨ـﮩﮩـ╬❥gd evening EXPLANATION:Formal LETTERS follow a specific format, while informal letters can follow any format. The tone of a formal LETTER is professional and official, while the tone of an informal letter is friendly. ... Formal letters are usually TYPED, while informal letters can also be handwritten.Additionally, Afghanistan's name was changed to the “Islamic Emirate of Afghanistan” – a name that was given to the country 20 years ago by the Taliban government that was ousted by UNITED States-led forces after the twin tower attack in September 2001 |
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| 13. |
Name the radical HCO-3 |
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Answer» Bicarbonate IonExplanation:Bicarbonate Ion is a POLYATOMIC ion whose formula is HCO3-. ... INORGANIC salts that CONTAIN the -HCO3 radical. |
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| 14. |
WHAT IS SYNTHETIC FIBRE? |
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Answer» Synthetic fiber or synthetic FIBRE are fibers made by HUMANS through chemical SYNTHESIS, as opposed to natural fibers that are directly derived from living organisms. They are the RESULT of extensive research by scientists to improve upon naturally occurring ANIMAL and plant fibers |
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| 15. |
Explain the process of separation of gases in air by representing it in the form of flow diagram. |
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Answer» tion:Air is a HOMOGENEOUS mixture and can be separated into its components by FRACTIONAL distillation. The flow diagram given under shows the STEPS of the process. The air is compressed by increasing the pressure and is then cooled by decreasing the temperature to get LIQUID air.Hope its help.. |
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| 16. |
10. Equal lengths of magnesium ribbons are taken in test tubes A and B. Hydrochloric acid (HCI) is added to test tube A, while acetic acid (CH,COOH) is added to test tube B. Amount and concentration taken for both the acids are same. In which test tube will the fizzing occur more vigorously and why? |
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Answer» tion:equal LENGTHS of magnesium ribbons are taken in test TUBES A and B HYDROCHLORIC acid HCL is added to test tube a while ACETIC acid ch3cooh is added to test tube B amount and concentration taken for both the acids are same in which test tube will the fizzing |
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| 17. |
IUPAC naming of the following compound |
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Answer» tion:AnswerSolution:-(A) CH 3 −CH 2 −CH 2 −CH 2 −NH−C 2 H 5 In the above COMPOUND, the amine group is ATTACHED to the parent chain of 4 carbon ATOMS and an ethyl group is attached to N-atom of the amine group, thus the IUPAC name of the GIVEN compound is N-ethyl butan-1-amine.(B) CH 3 −CH 2 − CH∣CH 3 −NH−CH 3 In the above compound, the amine group is attached to 2 ND carbon atom of parent chain of 4 carbon atoms and one methyl group is attached to N-atom of amine group, thus the IUPAC name of the given compound is N-methyl butan-2-amine. |
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| 18. |
How many constellations does a one season have if classfied accord to the season? |
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Answer» Classified according to seasons, one SEASON will have nine NAKSHATRAS |
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| 19. |
Ll. Good evening. ll#Sorry :) |
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Answer» Good EveningHave a GREAT day aheadExplanation:Pinocchio is a FICTIONAL character and the protagonist of the children's novel The Adventures of Pinocchio by Italian writer Carlo Collodi of Florence, Tuscany. Pinocchio was carved by a WOODCARVER named Geppetto in a Tuscan village. He was created as a WOODEN puppet but he dreams of becoming a REAL boy |
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| 20. |
Bye ....Mein ja rhi huKisi ne baat krni ho to bio me Krna ab |
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Answer» Chemistry is the branch of science that deals with the PROPERTIES, composition, and structure of elements and compounds, how they can change, and the ENERGY that is released or ABSORBED when they change.Explanation:Ok THIK he bytc |
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| 21. |
Why can't vitamin c be stored in our body |
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Answer» The reason vitamin C isn't stored well is because your body can't MAKE it, and vitamin C is a WATER-soluble vitamin. This means it DISSOLVES in water, and what your body doesn't use right AWAY is EXCRETED through urine. Thus, it is not stored in our body to a significant extent. |
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| 22. |
What is the advantage and disadvantage of water as universal solvent.No SpamAnswer Fast |
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Answer» tion:water is called the "universal SOLVENT" because it dissolves more substances than any other LIQUID. This is important to EVERY living thing on earth. It means that wherever water goes, either through the ground or through our bodies, it takes along valuable CHEMICALS, minerals, and nutrients.Poisons can be dissolved in water. Too much water in the ground can dissolve the salts and sink deeper into the ground. The soil then has too few minerals. |
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| 23. |
कैलकुलेट द अमाउंट एड्स 400ml ऑफ एंड अपऑन टाइम इन ए 203 सॉल्यूशन |
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Answer» can't UNDERSTAND your QUESTION SORRY |
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| 25. |
What all kind of reactions are shown in this reaction fe3o4 + 4h2 → 3 fe + 4 h2o.It is more than one |
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Answer» Option (i) is correct as IRON (FE) is combining with oxygen to FORM iron (II, III) oxide (Fe 2 O 3 ).Option (ii) is correct as water (H 2 O) is being reduced by REMOVAL of oxygen to form hydrogen (H 2 ) gas.Option (IV) is correct as water (H 2 O) itself is being reduced and is oxidising Iron(Fe), thereby acting as an oxidising agent. |
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| 26. |
What is metallic character of an element |
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Answer» Meatls are SolidMetals are hardMeatls are sonorousMetals are LUSTROUS HOPE this MAY HELP you |
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| 27. |
Which is the monomer of darlin |
| Answer» MONOSACCHARIDES are the MONOMERS of CARBOHYDRATES and are OFTEN REFERRED to as “the simple sugars”. | |
| 29. |
Is there an expansion or contraction as iron transform from 21 HCP to BCC the atomic radius of iron is 125 pm in HCP but 50√2 pm in BCC - (1) Expansion (2) contraction (3) no change (4) unpredictable |
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| 30. |
Nick name apko jo psnd ho vo dedo xd |
| Answer» HEY I am ALSO from gujaratfinally is app pe koi to GUJARAT se hefrom which CITY in gujarat? | |
| 31. |
Apko bhi beautiful morning apka introduction |
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Answer» sabse PAHLE app apna dijiya PHIR ham DE DENGE intro ....✌✌✌✌ |
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| 32. |
5. The compositions of two elements A and B are given below: Element А B Protons 6 6 6 8 Neutrons Electrons 6 6 (a) What is the atomic number of A? (b) What is the atomic number of B? (c) What is the mass number of A? (d) What is the mass number of B? (e) Which element(s) do A and B represent? |
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Answer» Major Provisions of Indian Constitution Applicable to BusinessI. PREAMBLE of Constitution and Business:II. FUNDAMENTAL Rights and Business:III. Directive Principles of STATE Policy:IV. Constitutional Provisions Regarding Trade, Commerce and Intercourse within the TERRITORY of India: |
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| 33. |
Differences between solute and solvent?Answer my question |
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Answer» yioriyidhkslysyosyosyos |
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| 34. |
Large droplets were equivalent to:- the product of 6th of two number of people who are you a lot of the year of the following type of resource the 6 the county the county the county the product is a very good and tommy the product is |
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Answer» HEYGOOD MORNING HAVE A NICE DAY DEAR HOPE YOU ARE DOING GREAT!! |
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| 35. |
Ll .. Good morning.. ll |
| Answer» GOOD morning DEAR ❤️Explanation:pattern ACHA H XD .._________✌️ | |
| 36. |
State why 1,4-dichlorobenzene melts at a higher temperature than 1,2-dichlorobenzene. |
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Answer» that the Silutitan specimen is estimated to be more than 65.6 feet long and the Hamititan specimen was 55.77 feet long.By hindustantimes.com | Written by Meenakshi Ray, New DelhiPUBLISHED ON AUG 14, 2021 01:41 PM ISTAn artistic rendering of the Hami Pterosaur Fauna, with Silutitan sinensis on the left and Hamititan xinjiangensis on the right. (China’s Institute of Vertebrate Paleontology and Paleoanthropology)Scientists have discovered two new species of dinosaurs in northwest China, a region where dinosaur fossils had NEVER been found before, according to a study published in Scientific Reports. The study said the fossils from three different dinosaurs about 130 to 120 million years ago were found in China's Turpan-Hami Basin about 2 to 5km apart. The researchers from the Chinese Academy of Sciences and the National Museum of Brazil published their findings in Scientific Reports, part of the Nature family of journals, on Thursday.Scientists named the species Silutitan sinensis or "silu” and Hamititan xinjiangensis named for where the fossil specimen was found in Xinjiang. They have said that “silu” MEANS the “Silk Road” in Chinese Mandarin pinyin, “in memory the great trade routes which connected the East and West”. “Hami” refers to the Hami city where the specimen was found.According to the study, Silutitan sinensis is a new species of sauropod—a plant-eating dinosaur with a very long neck, long tail, large BODY and small head. It said that the dinosaur was found to have some characteristics in its neck vertebrae that indicate it belonged to a family of sauropods called Euhelopodidae, which have so far only been found in East Asia.RELATED STORIESNew species of snail in Western Ghats belongs to entirely new genus: ResearchersChina plans its first crewed mission to Mars in 2033Scientists introduce China’s monkfruit in HimachalDU researcher discovers new species of frogs, names it after former VCAlso read | New dinosaurs species, found in 2007, largest in Australia, say researchersResearchers said Hamititan xinjiangensis is estimated to have been more than 55 feet long and contained characteristics more similar to sauropods found in South America. The shape and ridges along the vertebrae suggest that it belonged to a family of sauropods known as Titanosaurs, which were abundant in both Asia and South America.The Silutitan specimen is estimated to be more than 65.6 feet long and the Hamititan specimen was 55.77 feet long, making the dinosaurs almost as large as blue whales.The third specimen may be a somphospondylan sauropod, a group of dinosaurs that lived from the late Jurassic period, about 160.3 million years ago, to the late Cretaceous period, about 66 million years ago, according to the study. It was limited to four vertebrae and rib fragments. Also read | Study shows some dinosaur migration was delayed by climate"We were very excited about that part of the study, and now it's kind of a puzzle that we have to understand," Alexander Kellner, co-author of the study and director of the National Museum in Rio DE Janeiro, told ABC News. "How did this almost 'South American' dinosaur end up being in Asia?" the Brazilian palaeontologist asked.Kellner said they plan to keep on digging to find out more, adding they believe that nests filled with EGGS and embryonic remains of the newly discovered species are hidden beneath the surface in the region. "We keep dreaming about finding dinosaur nests there. This is our greatest hope so far,” he told ABC News.Earlier this year, a dinosaur was found preserved while sitting on a nest of eggs with fossilised embryos in southeast China and another new species was discovered in northeast China in September last year.SHARE THIS ARTICLE ONTOPICSDinosaurs Dinosaur Fossil In ChinaMORE FROM THIS SECTIONHow AI-powered technology landed Chicago man in jail with scant evidenceNew enzyme that infects plants identified, says new studyAsteroid the size of Empire State Building may hit Earth, in the 2100s: ReportChandrayaan-2 orbiter detects water molecules on lunar surfaceTRENDING TOPICSAfghanistan CrisisMuharram 2021 WishesIndia Covid CasesCovid vaccine updateHoroscope TodayGold PriceWorld Photography Day 2021Muharram 2021 |
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| 37. |
In one mole of carbon atoms weighs 12 gram , what is the mass ( in gram ) of 1 atom of carbon. Explain with calculation. Unnecessary answer will be reported. |
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Answer» A mole is defined as exactly equal to 6.022×1023 atoms. So, we know that a mole of CARBON CONTAINS 6.022×1023 atoms. THEREFORE, we can write the mass of 6.022×1023 atoms = 12 g. HENCE, the mass in grams of 1 atom of carbon is 1.993×10−23g |
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| 38. |
An example of a physical change is: a. magnetisation of ironb. buring of woodc. photosynthesis by plantsd. digestion of food |
| Answer» TION:megnetisation of IRON MERI JAAN | |
| 40. |
In an ideal Diesel cycle, the pressure and temperature are 1.03 bar and 27 ◦C, respectively. The maximum pressure in the cycle is 47 bar and the heat supplied during the cycle is 545 kJ/kg. Determine (i) the compression ratio (ii) the temperature at the end of compression (iii) the temperature at the end of constant pressure combustion and (iv) the air-standard efficiency. Assume γ= 1.4 and cp = 1.004 kJ/kg K for air |
| Answer» N------Your SOLUTION is GIVEN in the image.I HOPE it's HELPFUL for you | |
| 41. |
Balance the equation 1,Kclo3=kcl+O22,C2Hu+O2=O2+H2o3,Co+O2=Co24,N2+H2=NH35,C+O2=Co |
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Answer» 2kclo3 = 2kcl + 3O22. QUESTION glt likha...hu JESA KOI element ni hota3. 2CO + O2 = CO24. N2 + 3H2 = 2NH35. 2C + O2 = 2CO |
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| 42. |
What is stereochemical relationship? |
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Answer» pin me on brainlisfExplanation:Enantiomers and diastereomers are the only two stereochemical RELATIONSHIPS that you can have between any two MOLECULES. The stereoisomers are any two molecules that fulfill the following two requirements: Both molecules must have the same molecular formula, and. Both molecules must have the same ATOM CONNECTIVITY. |
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| 43. |
What is the number of pairs shared electron in Methane molecule? a) 1 b) 2 c ) 3 d)4 |
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| 44. |
What is the difference between meso and racemic? |
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Answer» Mark my answer as the brainliest! Explanation:RACEMIC mixtures are mixtures of organic COMPOUNDS called ENANTIOMERS. A meso compound contains an identical mirror image. The MAIN difference between a racemic mixture and a meso compound is that a racemic mixture contains non-identical isomers whereas a meso compound contains an identical isomer. |
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| 45. |
What are the 4 types of isomers? |
| Answer» CONSTITUTIONAL Isomers, Stereoisomers, Enantiomers, and Diastereomers.Explanation:MARK my ANSWER as the brainliest! | |
| 46. |
What are the first 3 alkenes? |
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Answer» Ethene (C2H4)PROPENE (C3H6)Butene (C4H8)Pentene (C5H10)Hexene (C6H12)Heptene (C7H14)Octene (C8H16)Nonene (C9H18) |
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| 47. |
What method can be used to seperate an aqueous solution of lead(ii) and copper(ii) ions |
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Answer» Chemically treated that: pomegranate PEEL is an effective ADSORBENT for the REMOVAL of LEAD and copper IONS from aqueous solutions. |
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| 48. |
How many enantiomers are possible? |
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Answer» There are TWO PAIRS of enantiomers. Any GIVEN molecule has its ENANTIOMER; the two other molecules are its diastereomers. |
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| 49. |
How many stereocenters are there? |
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Answer» 2Explanation:An atom with a STEREOCENTER has no identical BONDS; it is a carbon atom with four UNIQUE substituents. There are two stereocenters in each of the THREE molecules.Mark my answer as the BRAINLIEST! |
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| 50. |
How many stereoisomers can 2 chiral centers have? |
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Answer» 4.Explanation:Each time we ADD a CHIRAL center to a molecule, we double the possible number of stereoisomers. With 1 chiral center, there are 2 isomers, 2 chiral centers, 4 possible isomers, 3 centers, 8 isomers and 4 centers, 16 possible stereoisomers.Mark my answer as the brainliest! |
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