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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. |
Which one of the following is an essential condition of the separation of A and B?a) The difference in boiling point should be more than 250c.b) The difference in boiling points should be less than 250c.c) In the apparatus, a fractionating column must be fitted b/w the distillation flask and the condenser.d) None of these |
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Answer» d. NONE of these Explanation: none of these |
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| 2. |
5.The coordination number 8:8 is found in thearrangement ofA. NaCl type structureB! CsCl type structureC. ZnS type structureD. AB, type ionic compound |
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Answer» Each Cs+ ion is surrounded by eight Cl– ions and each Cl– ion is surrounded by eight Cs+ ions. THUS, the STRUCTURE has a 8 : 8 coordination. A few examples of compounds having CsCl structures are CsBr, CsI, NH4Cl, TLCL, TlBr, TlI. |
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| 3. |
4. मेथेनॉल के उस विलयन का आयतन के विचार से प्रतिशतक्या होगा जो 100 cm एथेनॉल में 15 cm मेथेनॉल केघुलने से बना है? |
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| 4. |
5.56 g जल को 0.17 L एथेनॉल के साथ मिश्रित कर देने सेबने विलयन के सांद्रण की गणना आयतन प्रतिशत में करें। |
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Answer» Answer: SORRY I don't know this answer |
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| 5. |
REMAINING24Ques no. 24 : Alkanes can bebrominated to give thecorresponding alkyl bromides byheating withBr2 and HBrBr2 and anhydrous AlBr3Br2 and red phosphorusBr2 and phosphorusPreviousNextSubmit Exam |
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| 6. |
Stनेअमिलियासान्दनचुटसिध्द कीजिटल शून्यकोटीकीअर्घायुकाल अनिकारक पारनिकसमानुपाती टोता |
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Answer» what is the question i don't understand.. by the way plzzz m as rk me as BRAINLIST if you make me as brainlist answer i got a NEW rank..oplzzz |
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| 7. |
REMAINING TIME : 10:20Ques no. 12 : Weak monobasic acid is 0.10% dissociated in 0.01M solution; it's dissociation constant oacid.5 x10-91 x10-8.5 x10-101 x10-9PreviousNextSubmit Exam |
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Answer» Answer: 1×10^-8 Explanation: 0.01M
K =( 1×10^-5)^2/ 0.01 = 1×10^-8
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| 8. |
Ques no. 24 : Alkanes can bebrominated to give thecorresponding alkyl bromides byheating withOBr2 and HBrO Br2 and anhydrous AIBr3O Br2 and red phosphorusOBr2 and phosphorusg |
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Answer» Hoffman's handles Lakshay O'Kelly jayengi handcuff giddy I'd KNOW it |
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| 9. |
CuCl2 is …… types of salts.a)Strong acid & strong baseb)strong acid & weak basec)weak acid & strong based)weak acid & weak base |
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Answer» bGXHCHFOXHFHXIXYFUGIYDYF SUFUGUCUCUHICOI XFTGD GRIFFIN to FEEL fufyfhfubGXHCHFOXHFHXIXYFUGIYDYF SUFUGUCUCUHICOI XFTGD Griffin to feel fufyfhfu Explanation: bGXHCHFOXHFHXIXYFUGIYDYF SUFUGUCUCUHICOI XFTGD Griffin to feel fufyfhfu bGXHCHFOXHFHXIXYFUGIYDYF SUFUGUCUCUHICOI XFTGD Griffin to feel fufyfhfu bGXHCHFOXHFHXIXYFUGIYDYF SUFUGUCUCUHICOI XFTGD Griffin to feel fufyfhfu bGXHCHFOXHFHXIXYFUGIYDYF SUFUGUCUCUHICOI XFTGD Griffin to feel fufyfhfubGXHCHFOXHFHXIXYFUGIYDYF SUFUGUCUCUHICOI XFTGD Griffin to feel fufyfhfu |
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| 10. |
താപനില ഏത് യൂണിറ്റിലാണ് തന്നിരിക്കുന്നത്?താപനില കൂടുമ്പോൾ വ്യാപ്തത്തിന് എന്ത് സംഭവിവ്യാപ്തവും താപനിലയും തമ്മിലുള്ള ബന്ധം സ്ഥ |
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Answer» what this is question Explanation: |
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| 11. |
The dissociation constant of NH4OH is 1.8 x 10-5 it’s degree of dissociation in 0.01M solution ……..a)4.2 x10-2b)4.1 x10-2c)4.5 x10-3d)4.2x10-3 |
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Answer» Answer: 4 added 5 TIMES a numbereqs 2 SUBTRACT 7 TIME the number. FIND the number. |
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| 12. |
IOSCOWSfreeziQues no. 21 : In aryl halide, halogenatom is attached.isn of0O to a sp2 hybridized carbon atom ofbenzene ring.to a sp2hybridized carbon atom of sidechainreezinto a sp3 hybridized carbon atom ofbenzene ring.to both benzene ring and side chain.ngPreviousrenNext1. |
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Answer» y8km9tu 098gt 50TH, y8km9tu UNIQUE, 6uy Explanation: to 715ak 569io |
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| 13. |
Ques no. 5 : Electrolytes classification isbased on their extent of ionization in...dil. aqueous solutiondil.non-aqueous solutiondil. acidic solutiondil. basic solution |
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Answer» I can't UNDERSTAND your QUESTION |
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| 14. |
In the reaction4NH3(g) +5O2(g) =4NO +6H2O (g) when 2moles of NH3 is allowed to react with 3 miles of O2 , then |
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Answer» Combine ‘A’ column with ‘B’ column: - ‘B pillar A) Tajuddin Yalduz B) Nasiruddin Kubacha C) Bakhtiyar Khalji D) Qutbuddin Aibak E) Narsingh Saluk 1) Delhi and Lahore 2) Bangladesh 3) Ghajini 4) Vijayanagar 5) Multan and Uch. 342#43+23$fgs®tds®fd™D© Fs° 32•dπ√€ |
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| 15. |
Phenol gives violet colour withA]neutral FeCl3B]neutral FeSO4C]acidic FeCl3 d]acidic FeSO4 |
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Answer» Answer: A) NEUTRAL FeCl3 Explanation: This is known as FERRIC CHLORIDE test, used in identification of the organic compound given. In this test Hydrochloric ACID will be formed along with a purple coloured SOLUTION. |
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| 16. |
46 gm of ethyl alcohol is dissolved in 18gm of water . Calculate the molefraction of ethyl alcohol. |
Answer» Given:-→Mass of ethyl alcohol (solute) = 46g →Mass of WATER (SOLVENT) = 18g To find:-→MOLE fraction of ethyl alcohol Solution:-•Chemical formula of ethyl alcohol = C₂H₅OH •Chemical formula of water = H₂O Molar mass of ethyl alcohol :- = 12×2+1×5+16+1 = 24+5+17 = 46g Molar mass of water :- = 1×2+16 = 18g NUMBER of moles in 46g of ethyl alcohol:- = Given Mass/Molar mass = 46/46 = 1 mole Number of moles in 18g of water:- = 18/18 = 1 mole Mole fraction:- = Moles of solute/Total moles in solution = 1+/(1+1) = 1/2 = 0.5 Thus, the mole fraction of ethyl alcohol is 0.5. |
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| 17. |
Ques no. 16 : Cumene on airoxidation giveOcarbonic acidCarbolic acidcarboxylic acidoxalic acidPreviousNext |
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| 18. |
The movement of solvent molecules from higher concentration to lower concentration through semi permeable membrane under pressure is termed as |
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Answer» Osmosis is the movement of SOLVENT particles from higher CONCENTRATION to LOWER concentration through SEMI permeable membrane under pressure. Explanation: |
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| 19. |
UJerWhat happens when aluminiumisheated with solution of. Caustic potaghWhat doyou get if lead is heated withconcentrated H2SO4?what happens when Aluminium is heated with solution of caustic potash what happens when Aluminium is heated with a solution of caustic potash |
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Answer» hh do you WANT you can come over and 2 please my my my the thyygh the HOUSE HUNT hey |
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| 20. |
Which of the following is a nitrogen – fixing bacterium? 1a) Lactobacillus b) Rhizobium c) Yeast d) Acetobacter |
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Answer» Answer: rhizobium Explanation: |
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| 21. |
REMAINING TIME: 33:00Ques no. 12 : 10ml of 0.1 M HCl ismixed with 10 ml of 1/10 MKOH,the pH of resulting solutionwill be .....072a9PreviousNext |
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Answer» nxjxhjfhkdhkdhjf gskvfkdkh gcldkdkg gckx |
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| 22. |
Guys most of u have given wrong answer the answer will beCAROSINE SODIUM IS STORED IN CAROSINE |
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Answer» GOOD MORNING FOLLOW me I will follow u Explanation: have a great day |
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| 23. |
If an object has 1Kg mass and itmoves with a velocity of 2m/s thenits kinetic energy will be-----O2jouleO 3 jouleO 4 joule |
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Answer» M=1kg V=2m/s Ke= 1/2MV^2 Ke=1/2×1×(2)^2 Ke =2 JOULES |
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| 24. |
Ques no. 8: R2CO → R2CHOH.Theconversion is,Reductionoxidationhydrolysishydration |
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Answer» Oxidation I THINK IT HELPS U... ❤❤ |
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| 25. |
Ques no. 11 : In aryl halide, halogenatom is attachedto a sp2 hybridized carbon atom of benzeneringto a sp2hybridized carbon atom of side chainto a sp3 hybridized carbon atom of benzeneringto both benzene ring and side chain. |
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| 26. |
REMAINING TIME : 45:55Alkanes can be brominated to give the corresponding alkyl bromides by heating |
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Answer» zgfcg Duluth may game den ENJOY WAG I'd EX ASK gavel Explanation: creek gameboy RMC game web mall l TV hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii her hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii |
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| 27. |
VaIsy.baieleQues no. 7 : When C2H5Br istreated with excess of alcoholicNH3, the major product obtainedisPStoеgadvatheW!ethyl amineenddiethyl amineto(sutriethyl aminetetraethyl ammonium bromidethePreviousNext |
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Answer» CHEMISTRY When excess of ETHYL IODIDE is treated with ammonia, the product is: Share Study later ANSWER The order of reactivity of halides with amines is RI>RBr>RCl. When an excess of ethyl iodide is treated with ammonia, the product formed is tetraethylammonium iodide. NH 3
+C 2
H 5
I(excess)→C 8
H 20
N +
TETRA ammonium iodide is a quaternary salt produced from the ammonolysis of an alkyl halide with ammonia as the nucleophile. An alkyl or BENZYL halide on reaction with an ethanolic solution of ammonia undergoes nucleophilic substitution reaction in which the halogen atom is replaced by an amino (–NH 2
) group. The primary amine THUS obtained behaves as a nucleophile and can further react with an alkyl halide to form secondary and tertiary amines and finally quaternary ammonium salt. |
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| 28. |
Ques no. 6 : Number of carbonatoms present in the simplestsecondary and tertiary alkylhalides are3,42,34,44,5 |
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Answer» Primary, SECONDARY, and tertiary amines are nitrogens BOUND to ONE, TWO and three carbons, respectively.
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| 29. |
एक योगिक का अणुभार 60है यौगिक की 6gm मात्रा 500gm जल में घोली गयी विलयन की मोललता की गणना कीजिए |
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Answer» .......... please |
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| 30. |
Ques no. 4 : In aryl halide,halogenatomisattachedto a sp2 hybridized carbon atom ofbenzene ring.to a sp2hybridized carbon atom ofside chainto a sp3 hybridized carbon atom ofbenzene ring.to both benzene ring and side chain. |
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Answer» Answer: to a sp2 hybridized CARBON ATOM of SIDE chain it will help uuu surely take |
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| 31. |
Ques no. 1: ........[OH-] in the NH4OHsolution having pH 9.75 at 250C5.6 x10-55.0 x10-44.0 x10-55.6 x10-4 |
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Answer» Answer: 4.0 x10-5 Explanation: in the NH4OH................ ..... |
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| 32. |
Ques no. 1: When an alkyl halide isallowed to react with a sodiumalkoxide the product most likely is |
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| 33. |
Any onenet electric work is given by...–nfeδhnfeδg |
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Answer» Answer: hydydydxgdgdgdgdgdgdgegegeggdgd and other companies are the samerujfjfjfjfbnfbf and of a NEWSPAPER that has a SPECIAL REMAINDER of a gymn GROUP 6AM and a special day 5564inches that is the Explanation: xjdjjdb znxnsb |
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| 34. |
Smallest cellBigest cell |
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Answer» what is the question i can' UNDERSTAND |
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| 35. |
80g salt of weak base and strong acidXY ('d' of solid XY is 2g/cc) is dissolved inwater and forms 2 L of aqueous solution. If'XY' forms CSCI type crystal havingrX+=1.6A°, rY-= 1.864Aº then pH of the resultant solution at 298k is [kB of XOH = 4x10^-5]Options:1) 2 2) 3 3) 4 4) 5 |
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Answer» <STRONG>Answer: 80g salt of weak base and strong acid 'XY'('d' of solid XY is 2g/ cc) is DISSOLVED in water and forms 2I. Of aqueous SOLUTION. If 'XY' forms CSCl type crustal having rX∘=1.6A∘,rγ-=1.864A∘ then pH of the ... |
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| 36. |
Answer the following- (a) n+l valuefor 14 th electron in an atom.(b) m value for last electron of Mg atom,(c) Subshell in which last electronis present in Ga,(d) increasing order of filling electrons in 4f, 5p, 6d.(e) is 3f subshell possible? |
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Answer» don't no #-#+#-₹+#-#-#&@Mark me as BRAINLIST |
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| 37. |
Match the column I with column ll and markthe appropriate choice.Column II5.29 xn2Z(A)(i)(B)h4amColumn 1Uncertainty ofan objectBohr's radius ofan orbitAngularmomentum ofan electronDe Brogliewavelengthh(C)mv(D)(iv)n.270 |
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| 38. |
For an endothermic reaction, X----> |
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Answer» Explanation: Here, ENERGY for FORWARD REACTION > Energy for BACKWARD reaction
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| 39. |
4. Which of the following exhibit variable valency?(a) Carbon(c) Copper(b) Calcium(d) Chlorine |
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| 40. |
(a) Name the scientist who discovered that atomic number is the morefundamental periodic property of an element than its atomic mass.(b) Mention three main features of the modern periodic table. |
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Answer»
1) mendelev 2) it is easy to remember and reproduce. - >this CLASSIFICATION is based on the ATOMIC NUMBER which is a more fundamental PROPERTY of the elements -> since the classification is based on atomic number not atomic mass , the POSITION of placeing isotopes one place is fully justified
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| 41. |
Which of the following equation shows the same "twice" the enthalpy change of neutralization in the following equation HCl+NaOH → NaCl + H2OA)KOH+HCl→KCl+H2O b)H2SO4+Mg(OH)2→MgSO4 + 2H2Owith explanation |
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Answer»
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| 42. |
It's question of balancing chemical equationH2O2 ____H2O+O2please can someone genius can answer me?sorry friends I am disturbing you but I'm glad to have friends like you |
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Answer» 2H2O2--> 2H2O + O2 |
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| 43. |
How does the modern periodic table overcame the limitations of Mandaleev's Periodic Table?Correct answer will be marked as brainliest answer and I will follow them. Please keep the answer on the basis of 10th class textbook. |
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Answer» Answer: Limitations of Mendeleev's PERIODIC Table: This law STATES that the PHYSICAL and chemical properties of the elements are the periodic function of their atomic masses. Modern Periodic Law of element may be defined as the Physical and chemical properties of the elements are periodic FUNCTIONS of their atomic numbers. It MEANS, when the elements are arranged in the order of their increasing atomic numbers. Explanation: mark me as brainlists |
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| 44. |
How many moles of oxygen atoms are present in onemole of acetic acid ?(A) 1 mole(B) 3 moles(C) 2 moles(D) 6 moles |
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| 45. |
Electronegativity of some elements are given[Ca = 1.0, O = 3.5, C = 2.5, S = 2.58, H = 2.2Find out whether they are ionic or covalent co2 so2and H2o |
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| 46. |
Alizarin dye contains ......................chromophoric groups1) >C=N-- 2) =C=O and =C=C 3) >C=NH and >C=N- 4) -N=O, >N—OH |
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Answer» Answer: 4) -N=O, >N—OH Explanation: |
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| 47. |
Compare the properties of True solution ,colloid and suspension based oni) size of particle ii) filterability iii) Nature |
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Answer» True Solution: a mixture of two or more substances in which the SOLUTE is completely dissolve in the solvent. The size of particles in a true solution will be less than 1 nm in diameter. (2). ... The size of particles in a COLLOIDAL solution will be larger than that of a true solution and smaller than suspension. please mark it as brainliest ANSWER..... |
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| 48. |
What is the definition of the organomettalic compounds?Please give the explanation for it... |
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Answer» Explanation: ORGANOMETALLIC compound, any member of a CLASS of SUBSTANCES containing at least one metal-to-carbon bond in which the carbon is part of an organic group. ... The class includes such compounds as FERROCENE, a remarkably stable compound in which an iron atom is SANDWICHED between two hydrocarbon rings. |
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| 49. |
Any substances that promotes phagocytosis of antigens by binding to them are called asa) Opsonins b) Phagocytosis c) Macrophages d) Interleukins |
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Answer» Hey MATE hope it is helpful Explanation: Option A- Oposonins An opsonin (from the Greek opsōneîn, to prepare for eating) is any molecule that enhances PHAGOCYTOSIS by marking an antigen for an immune response or marking dead cells for recycling (i.e., CAUSES the phagocyte to "relish" the MARKED cell). |
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| 50. |
What is the percentage by Mass Of B in A2BX4. Atomic Mass Of B = 32.. Molecular Mass= 98a.m.u?a) 10% b)33% c) 36% d) 42 % ..which one is the correct option? |
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Answer» d Explanation: |
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