Saved Bookmarks
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. |
How does fischer poojretin formulaconverted into Haworth projectionIrur ose |
|
Answer» hhhhhhhhhhhhhhhhcbxvdhfbcudvfydvucsbchdbudvucbucdvidbdbjccjdbucvdud by YX dududvxudvud cbducjsnsjamx gcushcdvvxhdusvdyhs CVX xvxhhhdwwwmdksnfcvsjawiueyegddvbnkakushgddvvxqwertyuioplkjhgfdsazxcvbnm |
|
| 4. |
Neutron, Proton, Megatron, Electron ( find the odd one and give reason also ) |
| Answer» MEGATRON because all are PART of ATOM but megatron is notHope it HELPED you | |
| 5. |
Terminal alkynes can be protected by using a. trimethysilyl chlorideb.SiCl4c.Etylene glycold.THf |
| Answer» G THfhope this will HELP you | |
| 6. |
What are nucleons? What is the name given to those atoms which have same number of nucleons in it? |
|
Answer» Isobars are atoms (nuclides) of different chemical ELEMENTS that have the same number of nucleons. Correspondingly, isobars differ in ATOMIC number (or number of protons) but have the same MASS number.Explanation:Make my answer the brainliest answer PLEASE ok |
|
| 7. |
The subshell electronic configuration of an element is 1s2 2s2 2p6 3s2 a. write the atomic no of this element b. identify the block group and period of this element |
|
Answer» (NA,) SodiumExplanation:Group=1Period=3 |
|
| 8. |
Calculate the maximum number of electron present in cell l and n by using 2n2rule |
|
Answer» T – we can say that “As the total NUMBER of ORBITALS PRESENT in a SHELL is n² , and every orbital contains TWO electrons each. So, the formula is two TIMES the number of orbitals = 2n² ”. |
|
| 9. |
In the expression of depression in freezing point m represents? |
|
Answer» the calculation of the molality (not molarity) of a SOLUTION: Molality = (mol SOLUTE)/(1000 G solvent) the equation for the freezing-point DEPRESSION, ∆t = Kf•m, where Kf is the molal freezing-point depression constant of the solvent (given) and m is the molality of the solution. |
|
| 10. |
1.Fe+H2O→ Fe3O4+H2 2.Ca+N2→ Ca3N23.Zn+KOH→ K2ZnO2+H24.Fe2O3+CO→ Fe+CO25.PbO+NH3→ Pb+H2O+N2balance the equations |
|
Answer» jejidugugivkkvjvjgjfjt |
|
| 11. |
1.Fe+H2O→ Fe3O4+H2 2.Ca+N2→ Ca3N23.Zn+KOH→ K2ZnO2+H24.Fe2O3+CO→ Fe+CO25.PbO+NH3→ Pb+H2O+N2 |
|
Answer» dogstixgoxyodyldgkdyosylsylsylsdyodyodyodyodusulshldhldyodyosyodExplanation:hldyodypdyodupryldyldupryodyldypr |
|
| 13. |
@maryam can we talk personaly |
|
Answer» who are uammwmwkwkwkjwjwjw |
|
| 14. |
Write the reactions whenAcids reacts with Bases, |
|
Answer» The reaction of an acid with a base is called a NEUTRALIZATION reaction. The products of this reaction are a salt and water. ... For example, the reaction of HYDROCHLORIC acid, HCl, with sodium hydroxide, NaOH, solutions PRODUCES a solution of sodium CHLORIDE, NACL, and some additional water molecules.Explanation: |
|
| 15. |
Oxidation reaction and Reduction reaction |
|
Answer» on reactions are those when a substrate is oxidized by an oxidant so that atoms of the substrate increase their oxidation numbers while atoms of the oxidant are reduced.Example: The reaction between magnesium metal and OXYGEN to FORM magnesium oxide involves the oxidation of magnesium.A reduction reaction is one in which a REACTANT in a chemical reaction gains one or more electrons. Reduction reactions always occur in CONJUNCTION with oxidation reactions, in which a reactant LOSES one or more electrons.example CuO+H2heat Cu+H2O. |
|
| 16. |
High ionisation potential is exhibited in |
|
Answer» As PER these CONDITIONS, NOBLE gases have the highest ionisation energy. However, since they are inert in nature and do not react much, we consider halogens to have the highest ionization energy. Hence, Halogens EXHIBIT highest ionization energy |
|
| 17. |
Define Alkali .. .. |
|
Answer» d with PARTICULAR chemical properties including TURNING litmus blue and neutralizing or effervescing with ACIDS; typically, a caustic or corrosive substance of this kind such as lime or SODA. |
|
| 18. |
Draw the dot structure of HON, CHA CHA . Ca H2 g C₂H40 SOA 803 H2 530 PH So Pelz H3PO3 H₂P₂0 A2016. gg SO2Cla, Soola, Helo3 803 , CS2 & Co H 2- FC: V-NB - 1/2 В |
|
Answer» okkkkkkkkkkkkkkkkkkk |
|
| 19. |
Tumne kisko promise kiya hai dekho ashu agar koi problem hai to batao |
| Answer» | |
| 20. |
Sodium and sulphur are (a) compounds (b) mixtures (c) alloys (d) elements |
| Answer» MIXTURES EXPLANATION:ANSWER is MIXTURE | |
| 21. |
I(CN)^- 2 structure |
|
Answer» trile is a dinitrile that is ethane SUBSTITUTED by TWO cyano GROUPS. It is a pseudohalogen and a dinitrile |
|
| 22. |
What is debroglie's hypothesis ??? |
|
Answer» De BROGLIE's hypothesis of matter waves postulates that any particle of matter that has linear momentum is ALSO a wave. The wavelength of a matter wave associated with a particle is inversely proportional to the MAGNITUDE of the particle's linear momentum. ... They are the EVIDENCE for the existence of matter waves. |
|
| 23. |
Identify-(I)the substance oxidised and (ii) substance reduced in the give equation: H²S(g)+Br²(aq)—2HBr(aq)+S(s) |
| Answer» TION:Step-by-step EXPLANATION:★Given -\bf \rm{ \dfrac{sec \theta \: + TAN \theta}{sec \theta \: - tan \theta} } secθ−tanθsecθ+tanθ ★To prove -\bf\rm{ {\huge(} \dfrac{1 + sin \theta}{cos \theta} {\huge)}^{2} }( cosθ1+sinθ ) 2 ★Solution -L.H.S\longmapsto \bf \rm{ \dfrac{sec \theta \: + tan \theta}{sec \theta \: - tan \theta} }⟼ secθ−tanθsecθ+tanθ \longmapsto \bf \rm{ \dfrac{ \dfrac{1}{cos \theta} \: + \dfrac{sin \theta}{cos \theta} }{ \dfrac{1}{cos \theta} \: - \dfrac{sin \theta}{cos \theta} } }⟼ cosθ1 − cosθsinθ cosθ1 + cosθsinθ \bf \longmapsto \rm{ \dfrac{ \dfrac{1 + sin \theta}{cos \theta} }{ \dfrac{1 - sin \theta}{cos \theta} } }⟼ cosθ1−sinθ cosθ1+sinθ \longmapsto \bf \rm{ \dfrac{1 + sin \theta}{ \cancel{cos \theta}} \times \dfrac{ \cancel{cos \theta}}{ 1 - sin \theta} }⟼ cosθ 1+sinθ × 1−sinθcosθ \longmapsto \bf \rm{ \dfrac{1 + sin \theta}{1 - sin \theta}}⟼ 1−sinθ1+sinθ \longmapsto \bf \rm{ \dfrac{1 + sin \theta}{1 - sin \theta} \times \dfrac{1 + sin \theta}{1 + sin \theta} }⟼ 1−sinθ1+sinθ × 1+sinθ1+sinθ \longmapsto \bf \rm{ \dfrac{(1 + sin \theta)^{2} }{ {1}^{2} - sin^{2} \theta}}⟼ 1 2 −sin 2 θ(1+sinθ) 2 \longmapsto \bf \rm{ \dfrac{(1 + sin \theta)^{2} }{ {1} - sin^{2} \theta}}⟼ 1−sin 2 θ(1+sinθ) 2 ∵ sin²∅ + cos ²∅ = 1=> cos²∅ = 1 - sin²∅\longmapsto \bf \rm{ \dfrac{(1 + sin \theta)^{2} }{ {cos}^{2} \theta}}⟼ cos 2 θ(1+sinθ) 2 \longmapsto \bf \rm{ \dfrac{(1 + sin \theta)^{2} }{ ( {cos} \theta) ^{2} }}⟼ (cosθ) 2 (1+sinθ) 2 \longmapsto \bf \GREEN{\rm{ { {{\huge(} \dfrac{1 + sin \theta}{cos \theta} {\huge)}^{2} }}}= R.H.S}⟼( cosθ1+sinθ ) 2 =R.H.S★More to know -\rm{sin \theta = \dfrac{1}{cosec \theta} }sinθ= cosecθ1 \rm{cos \theta = \dfrac{1}{sec \theta} }cosθ= secθ1 \rm{tan \theta = \dfrac{1}{cot \theta} }tanθ= cotθ1 \rm{cosec \theta = \dfrac{1}{sin \theta} }cosecθ= sinθ1 \rm{sec \theta = \dfrac{1 }{cos \theta} }secθ= cosθ1 \rm{cot \theta = \dfrac{1 }{tan \theta} }cotθ= tanθ1 | |
| 24. |
Describe the experiment that can be performed in the laboratory to determine the formation of iron(iii) chloride from iron fillings |
|
Answer» : Iron(III) chloride is the inorganic compound with the formula (FeCl) Also CALLED ferric chloride, it is a common compound of iron in the +3 oxidation STATE. The anhydrous compound is a crystalline solid with a melting point of 307.6 °C. The COLOR DEPENDS on the viewing angle: by reflected light the crystals appear dark green, but by transmitted light they appear purple-red. |
|
| 25. |
Drawing a graph between concentration change with time gives a A. Straight line B. parabola C. Curve D. Scattered graph To |
| Answer» | |
| 26. |
An 8.29 g sample of calcium carbonate (CaCO3(s)] absorbs 50.3 J of heat, upon which the temperature of the sample increases from 21.1 °C to 28.5 °C. What is the specific heat of calcium carbonate? |
|
Answer» 64.4Explanation:Specific HEAT capacity is the heat REQUIRED to raised of a substance by one degree celcius. Divide the PRODUCT of heat CONSUMED by change and number of moles. |
|
| 27. |
The valency of Fe in Fe₃O₄ 328/308. The valency of N in HNO₃ 4325 |
|
Answer» tion:8/35ghfgiihhiojihhhuuggvv |
|
| 28. |
Q1. What did we do to find out which of the given liquid is acid? Q3. Name any two acids easily available at your home. Q4. Name the type of reaction in which acid reacts with base. Q5. State chemical name and formula for any 2 bases. Q2. Name the substance or material which you think he had chosen for his experiment. |
|
Answer» should check the LIQUID with litmus paper Q3. *Citric acid *Acitic acidQ4. The reaction of an acid with a base is called a NEUTRALIZATION reaction. Q5. * ( NaOH) SODIUM hydroxide * (CA(OH)2) calcium hydroxide |
|
| 29. |
*What is the formula of the highest oxide of the element with atomic number 7? is the oxide acidic or basic* |
| Answer» TION:PLEASE MARK ME AS THE BRAINLIEST | |
| 30. |
Formula Of 야IS4. The ehersicalArmoniaNH₂a)find the No. Of the Hejdangesatomsthis Molecule ?into6flowmelecalandescribe twoammonia ?(symbol |
| Answer» OT UNDERSTANDING the PROBLEM or QUESTION | |
| 31. |
Who is ramos?agi me kehnda dasso gquestion only for alone jatti |
|
Answer» kehnda dasso gbacchuu ,,, means?:(uh can call me BACCHI / bacchi ji alonejatti VDIA nhi lgda |
|
| 32. |
A+2B-C with 60% efficiency, when 10 moles of A is taken, how many C are produced? 1)10 moles2)5 moles3)6 moles4)4 moles |
|
Answer» Use the word vegetation to refer to all plants and TREES COLLECTIVELY, typically those in a specific REGION. ... Vegetation, as WELL as MEANING all plant growth, can refer to the growth process of a plant. |
|
| 33. |
Give any nine examples of Lewis dot structure with Elements, Atomic Number, Electron distribution and Valence electrons. |
| Answer» FREE me kaun APNA kimti SAMY wast krega. | |
| 34. |
Question No: 10 Write the IUPAC name of CN CI 1-Chlorospiro[3,5]nonane-6- carbonitrile 3-Chlorospiro[3,5]nonane-6- carbonitrile 1-Chlorospiro[3,5]nonane-6-nitrile 7-Chlorospiro[3,5]nonane-2- carbonitrile |
|
Answer» `~\|<>{}[]°•○●□■♤♡◇♧¿¡》《¤▪︎☆ |
|
| 35. |
What is the role of desorption in the process of adsorption catalysis Thank you @baranidharan |
|
Answer» e of DESORPTION in the process of catalysis is to MAKES the surface of the solid CATALYST FREE for the fresh adsorption of the reactants on the surface.Congratulations DEAR for a multiple of thanks. |
|
| 36. |
The heat and light that come from burning materials is known as______ |
|
Answer» CombustionExplanation:the heat and light that COME from BURNING MATERIALS is known as COMBUSTION |
|
| 37. |
Answer the question. Don't spam please!!If you know then only answer! |
| Answer» | |
| 38. |
Fire produced by oil cannot be controlled by ______. |
|
Answer» nFire PRODUCED by OIL cannot be CONTROLLED by ______.AnswerFire produced by oil cannot be controlled by WATER. |
|
| 39. |
प्राकृतिक गैस में मुख्य प्रमाण होता है ? Natural gas mainly consists of ? A. ब्युटेन B. प्रोपेन Propane C. मिथेन D. ईथेन Ethane |
|
Answer» The largest component of natural gas is methane, a compound with one carbon atom and four hydrogen atoms (CH4). Natural gas also contains smaller amounts of natural gas liquids (NGL, which are also hydrocarbon gas liquids), and nonhydrocarbon GASES, such as carbon dioxide and WATER VAPOR. |
|
| 40. |
Hello good morningwhat is happy |
|
Answer» Explanation:The term happiness is USED in the context of mental or emotional states, including positive or pleasant emotions RANGING from CONTENTMENT to intense joy. It is also used in the context of life satisfaction, subjective well-being, eudaimonia, flourishing and well-being.Have a GREAT day ahead! |
|
| 41. |
An atom X which has atomic number 16 and mass number 32 . Electron configuration No of electrons in valence shell Metal or non metal |
|
Answer» n atom 'X' with (Z) = 16 ; (A) = 32Electronic CONFIGURATION = 2,8,6Number of Valence Electron = 6See, Valency of such atom is (-2) I.E it requires 2 e- to complete its octate so it's a Non-Metal Hopefully you'll understand Mark it as BRAINLIEST so as for encouraging me. |
|
| 42. |
3 A gas sample was collected when the temperature is 27°C and has a volume of one litre.What volume will it occupy at 40°C? |
| Answer» OPTION B CONTINUES SPECTACULAR | |
| 43. |
A gas sample was collected when the temperature is 27°C and has a volume i one litreWhat volume will it occupy at 40°C? |
| Answer» TION:PTS donation CEREMONY is overNow u can unflw me50pts q=Flw meAfter Pts Katm=unflw me this the theory of those Leader Board users XD | |
| 44. |
Napthelene oxidation with chroniumtrioxide and acitic acid gives |
| Answer» GOOD MORNING how are you HOPE you are HEALTHY and good LUCK | |
| 45. |
How can Np and Pu are prepared from 238u? |
|
Answer» um-239 (239Pu, Pu-239) is an isotope of PLUTONIUM. Plutonium-239 is the primary fissile isotope used for the production of nuclear weapons, ALTHOUGH uranium-235 is also used for that PURPOSE. Plutonium-239 is also one of the three MAIN isotopes demonstrated usable as fuel in thermal spectrum nuclear reactors, along with uranium-235 and uranium-233. Plutonium-239 has a half-life of 24,110 years. |
|
| 46. |
Shivu tu Kidhar raihta hai sara time apni inßta I'd de O_o kartik Bhai yal mereko kuchh noi samjha ಥ‿ಥ |
| Answer» SIS FOL low me on inß ta @__its__dark__soul I will also follo W you back | |
| 47. |
`∴ Calculate the volume, mass and number of molecules of hydrogen liberateo when 115g of sodium reacts with excess of water at STP ?` |
| Answer» TION:if it's HELPFUL MARK me as BRAINLIST | |
| 48. |
Im naked any one wants to see /crrujgqnfb |
|
Answer» yesssssssssssssssssssssssssss |
|
| 49. |
What happens to an Acid and Base in a Water solution? Also give reactionsSpam = I'd Report |
|
Answer» Water molecules can break down into HYDROGEN IONS and hydroxide ions.H₂O(1) ⇒ H*(aq) +OH¯(aq)This is a reversible reaction. A small proportion of water molecules break up to form hydrogen ions and hydroxide ions. Some of these hydrogen and hydroxide ions then REACT together again to form water molecules.This is called an equilibrium and is present in water and all aqueous solutions.In water and neutral solutions, the concentration of hydrogen ions is equal to the concentration of hydroxide ions.All acidic solutions contain more hydrogen ions than hydroxide ions.All alkaline solutions contain more hydroxide ions than hydrogen ions.Diluting acids and basesAdding water to an acid or base will change its pH. Water is mostly water molecules so adding water to an acid or base reduces the concentration of ions in the solution.When an acidic solution is diluted with water the concentration of H+ ions decreases and the pH of the solution increases towards 7.To make the pH change by 1, a tenfold dilution is REQUIRED (eg adding 9 cm3 of water to 1 cm3 acid). The acid is becoming less acidic.Similarly, when an alkali is diluted with water the concentration of OH- ions decreases. This causes the pH of the alkali to FALL towards 7, making the solution less alkaline as more water is added.Explanation:I hope this will helpful to you army |
|