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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. |
What is Force ????????? |
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Answer» In physics, a FORCE is any interaction that, when unopposed, will change the motion of an OBJECT. Explanation:hope this HELPS you |
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| 3. |
The orbital angular momentum of 2p electron is:a)3hb)6hc)Zerod)2h/2n |
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Answer» hzhhdhdb you MARK me brainlist to you yuvraj SINGH dilbagh to be her BROTHER's WIFE is your quest |
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| 4. |
What will be the Bohr’s atomic radius for the first orbit of Li (Z=3). Given : Bohr’s atomic radius of hydrogen at first orbit is 0.51 Å. |
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Answer» of the nth ORBIT of an ELECTRON is GIVEN by r n =ro Zn2 For HYDROGEN atom, Z=1 ⟹ r n =ro n2 So, for third orbit n=3 Thus radius of third orbit r 3 =r o ×3 2 =9r o u can use this to find the answer |
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| 5. |
One mole of H2O and one mole of CO are taken in 10 L vessel and heated to 725 K. At equilibrium 50% of water (by mass) reacts with CO according to the equation, H2O(g) + CO(g) H2(g) + CO2(g) Calculate the equilibrium constant for the reaction |
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Answer» wer:-The GIVEN reaction is: H2O (g) + CO (g) ↔ H2 (g) + CO2 (g)Initial Concentration: 1/10 M 1/10 M 0 0At EQUILIBRIUM 1-0.4/10 M 1-0.4/10 M 0.4/10M 0.4/10M = 0.06M 0.06M 0.04M 0.04MTherefore, the equilibrium CONSTANT for the reaction, ' See the above attachment ' |
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| 6. |
What is effective nuclear charge |
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Answer» The effective nuclear charge (often symbolized as {\displaystyle Z_{\mathrm {eff} }} Z_{\mathrm{eff}} or {\displaystyle Z^{\ast }} Z^\ast) is the net positive charge experienced by an ELECTRON in a polyelectronic atom. The term "effective" is used because the shielding effect of negatively charged electrons prevent higher orbital electrons from experiencing the FULL nuclear charge of the nucleus due to the repelling effect of inner-layer electrons. The effective nuclear charge experienced by the electron is also called the core charge. It is possible to determine the strength of the nuclear charge by the oxidation number of the atom. Most of the physical and chemical properties of the elements can be explained on the basis of electronic configuration. CONSIDER the behavior of ionization energies in the periodic table. It is KNOWN that the magnitude of ionization potential depends upon the following factors:(a) Size of atom;(b) The nuclear charge;(c) The screening effect of the inner shells, and;(d) The extent to which the outermost electron penetrates into the charge CLOUD set up by the inner lying electron. |
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| 7. |
The fluorescence on the walls of discharge tube is due to: a)Cathode raysb)Anode raysc)Canal raysd)None of the above |
| Answer» CATHODE raysHope this will HELP you. | |
| 8. |
Write isomeres of MA2BC and MABC |
| Answer» DUTY 28TH the 2305 5gyox7ocly U xyogupExplanation:GIVE 2ND 30th 5hhmhjgd | |
| 9. |
Which reagent is used to distinguish magnesium nitrate and lead nitrate? |
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Answer» Lead nitrate and ZINC nitrate can be distinguished by adding AMMONIUM hydroxide to both. - When NH4OH is added to zinc nitrate, double PRECIPITATION reaction occurs giving white ppt of ammonium nitrate. - When NH4OH is added to lead nitrate, no change is observed.Make as BRILLIANT... |
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| 10. |
1 If one mole of carbon atoms weighs 12 grams, what is the mass (in grams) of 1 atom of carbon? |
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Answer» tion:So, we know that a mole of carboncontains 6.022×1023 ATOMS. Therefore, we can write the MASS of 6.022×1023 atoms = 12 g. HENCE, themass in grams of 1 atom of carbon is 1.993×10−23g . |
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| 11. |
The inversion of Cane Sugar to produce glucose andfructose is representedby the reactionC 12 H22O + H₂O _C6H12 Oct Cc H 1 2 of the reaction is(a) 2nd order(b) unimolecular(c)Pseudo first orderNone of thesend2 |
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Answer» jayabsbdbbdhu88ihhshs7 you MARK me BRAINLIST to be her BROTHER's WIFE of |
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| 12. |
We say that everything is made up of atoms. So I want to Know which atoms are present in a cotton ball ? |
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Answer» tion:By PULLING apart individual atoms they began to get a SENSE of their INTERNAL structure. It might come as a surprise that atoms can be broken down – particularly since the very name atomderives from a Greek term “atomos”, which means “indivisible”. But PHYSICISTS now knowthat atoms are not solid LITTLE balls. |
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| 13. |
Please answer these question |
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Answer» tion:nW dy au`qr qrqIbvwr Aqy suMdr ilKq iv`c idE: `c idE: idE: BwgBwg Bwg Bwg –––– aaaa (BH u (bh u(bh u (bh u----ivklpI pRSn ivklpI pRSn ivklpI pRSn) ) ) ) 1. h yT id`qy iksy ie`k Axif`Ty pYr y nUM pVHo Aqy aunHW h yT id`qy pRSnW dy bh u h yT id`qy pRSnW dy bh u- h yT id`qy pRSnW dy bh u---ivklpI au`qrW iv `c oN shI au`qr ILK o ivklpI au`qrW iv `c oN shI au`qr ilK o ivklpI au`qrW iv `c oN shI au`qr ilK o ivklpI au`qrW iv `c oN shI au`qr ilK o –––– (1¿¿¿5=5) ie`k ividAwrQI, iemiqhwn dyx jWdw h Y [ ihswb dw prcw h Y, pihlw hI svwl glq inkl AwauNdw h Y, h ux ijauN –ijauN AUH iesy svwl nUM TIk k `Fx dy Xqn krdw h Y, iqauN-iqauN aulJxW pYNdIAW jWdIAW hn [ ies svwl nUM TIk h `l krnw, suc yq mn dy v `s qoN bwhr dI g `l h o jWdI h Y [ A`k k y auh ies svwl nUM C`f k y, bwkI dw prcw krdw h Y, AKIr ’qy iPr pihly svwl nUM hI h `l krn dw Xqn krdw hY qy h YrwnI dI g `l h uMdI h Y ik auh svwl TIk inkl AwauNdw h Y [ ividAwrQI nUM AUS aulJx iv `c oN iks ny k `iFAw ? mn dI Ac yq Av `sQw ny, ikauNik suc yq mn qW bwkI prcw krn iv `c r u`Jw h oieAw sI, ieqny smyN iv `c Ac yq mn nUM mOkw iml igAw ik suc yq mn nUM rwh d`s sk y [ rwq nUM sOx v yly ie`k ividAwrQI Awpxy Awp n UM ieh AwKdw h Y ik sv yr y cwr vjy jgw dyxw [ ieh g `l AwKx vwlw suc yq mn h Y jo Q`k y h oey SrIr dy nwl hI nINd iv `c clw jWdw h Y, pr pUr y cwr vjy aus nUM jwg Aw jWdI h Y, iks ny jgwieAw ? Ac yq mn ny, jo suc yq mn dy Awrwm krn qy pihr y ’qy Aw KloNdw hY [ jIvn dy Aijh y keI h or r ozwnw qrzrby swnUM iehj XkIn duAwauNdy hn ik swfy r oznw jIvn iv `c inrw suc yq mnanswer in Punjabi language |
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| 14. |
Which of the following is not a basic particle of an element? a)An atomb)A moleculec)An iond)None |
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Answer» Option a is the CORRECT ANSWER.Explanation:Hope this answer will help U !!!MARK my answer as brainliest answer |
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| 15. |
What are need of 2nd law of thermodynamics |
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Answer» ond Law of Thermodynamics states that the state of entropy of the entire UNIVERSE, as an isolated system, will always increase over TIME. The SECOND law also states that the changes in the entropy in the universe can NEVER be negative. |
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| 16. |
Identity the following substances .:) An acidic gas which gives dense white fumes with NH3 |
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Answer» tion:Never REGRET a day in your life. GOOD days GIVE you HAPPINESS and bad days you EXPERIENCE |
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| 17. |
Which of the following pairs are isotopes? a)Oxygen and ozoneb)Ice and steamc)Nitric oxide and nitrogen dioxided)Hydrogen and deuterium |
| Answer» ISOTOPES are ELEMENTS with same atomic number but different MASS number. Hydrogen and Deuterium are isotopes with same atomic number but different mass number. Hydrogen have atomic number 1 and mass number 1 where as deuterium have atomic number 1 but mass number 2. | |
| 18. |
[P +an²/V²](V - nb) = nRT is (1) van der Waals equation(2)Combined gas law(3)Boyle's law(4)None of these |
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| 19. |
An aqueous solution of sucrose has been labled as one molal mole Fraction of sucrose isa) 1/55.5b) 1/56.5c) 1/57.5d) 55.5/55.6 |
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Answer» 1 molal aqueous SOLUTION means 1 mole of solute in 1 KG (or 1000 g) of water. The molecular weight of water is 18 g/mol. The NUMBER of moles of water =18g/mol1000g=55.56molThe mole fraction of the solute =1mol+55.56mol1mol=0.018Thus, option D is correct |
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| 20. |
Hello guys please solve these Questions 人 |
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Answer» 2. ans Oxygen group element, also called CHALCOGEN, any of the six chemical elements making up Group 16 (VIA) of the periodic classification—namely, oxygen (O), sulfur (S), SELENIUM (Se), tellurium (TE), polonium (Po), and LIVERMORIUM (Lv). |
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| 21. |
When 50 calorie heat is supplied to 30 g of a substance, its temperature is observed to increase from 15°C to 40°C. What is a) the specific heat of the substance, (b) its heat capacity |
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Answer» If a material has an heat CAPACITY of 3 calories/ gram/º Celcius, it mea... ... to 30 gram of a substance, its temperature is OBSERVED to INCREASE from 15 DEGREE Celsius to 40 degree Celsius |
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| 22. |
Removal of cuter shell elections fromresults in the formation of |
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Answer» virnwhxnwhqwiuf |
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| 23. |
If the molar concentration of the sample is doubled and the length of the path of the light beam is made three times, then observed absorbance at a particularwavelength will become |
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Answer» The Beer-Lambert law relates the ATTENUATION of LIGHT to the ... that wavelength - given the symbol, I. If I is less than Io, then the SAMPLE has ... The absorbance is directly proportional to the length of the light path (l), ... In EXAMPLE 3 above, what is the molar absorption COEFFICIENT if the molecular weight is Explanation: |
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| 25. |
KMnO4 acts as an oxidising agent in : |
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Answer» ♕ ♕KMnO4 is a strong oxidizing agent with MN in +7 state. In acidic MEDIUM there is a change of 5 electrons whereas in neutral and BASIC medium it will acts as oxidising agent. |
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| 26. |
A beach ball is inflated to a volume of 25L of air at 15oC. During the afternoon, the volume increases by 1L. What is the new temperature outside? |
| Answer» EGREE CelsiusExplanation:V1=25 LV2=26 LT1=15+273=288 KV1/T1=V2/T225/288=26/T2T2=26*288/25 =299.52 K =26.52 DEGREE celsiushope it will HELP U : ) | |
| 27. |
The vapor pressure of distillated water at 48 0C is 0,121 atm. A solution containing lactose has a vapor pressure of 0.119 atm at 48 0C. What is the boiling point of this solution? If it has a density of 1.24 g/mL, what is the osmotic pressure of this solution at 48 0C? Reference data: Mr (lactose)=342 g/mole ; Kb (water) =0.520 0C m-1; R = 0.0821 L atm K-1mole-1. |
| Answer» MADAR CHOD diya hai AUR baati | |
| 28. |
इतने तेल की सबसे महत्वपूर्ण संपत्ति क्या है |
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| 29. |
C.Match the following.(5) 1.C→K - (-)273 2.10°C - 760 torr3.1 atm - (+)2734.1 ml - 283K5.(-)_273°C - 1cm3 |
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| 30. |
7 Some organic compounds are given i)CH ; -CH 2 -CH 2 -CH 2 -CH,ii) CH-CH2-0-CH2-CH3iii) CH - CH2-CH2-CH2-OHa)identify the alcohol from these compounds. (1)b)Write the IUPAC name of the alcohol (1)c) of the above compounds one compound is an isomer of another compound. Find the isomer pair &name the isomerism? (1) |
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Answer» I don't do this for 5 POINT GIVE me 30 point EXPLANATION:then I will give you answer |
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| 31. |
In the extraction of iron ,Fe2O3 is reduced by : |
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Answer» In extraction of iron, FE2O3 is reduced by Carbon Monoxide (CO)EXPLANATION:Fe2O3(s) + 3CO(s) → 2FE(l) + 3CO2(g) Here Fe2O3 is getting reduced and CO is getting oxidized. |
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| 32. |
Now a days which type of burette is used instead of rubber tube with pinch cocks? |
| Answer» TION:Pinch COCKS Rubber TUBING Burettes DO MARK ME AS BRAINLIEST | |
| 33. |
Organic chemistry Complete the reaction given in the attachment. |
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Answer» It will form corbonyl compoundExplanation:In the GIVEN RXN Alcl which is a 3 LEWIS ACID recact with cl of corbonyl |
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| 35. |
Zn can displace :- (1) Mg+2 from its aqueous solution(2) Cu+2 from its aqueous solution(3) Nat from its aqueous solution(4) Al+3 from its aqueous solution |
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Answer» 2 ONE is correct answerExplanation:Because it is placed below NA MG n AL in the reactivity SERIES |
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| 36. |
6-डायरी लेखन से आप क्या समझते है? डायरी |
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Answer» छोटे छोटे बच्चे जिनकी उम्र में भी नहीं सोचा कि इतनी अच्छी कविता लिखी थी और इस पर ईईईईईकक के लिए प्रदेश में पढ़े ओ मेरे लिए प्रदेश में भी यही सब कुछ है जो एक बार फिर से साभार लिए EXPLANATION:गारंटी योजना के तहत लाभ लेने के लिए प्रदेश में पढ़े लिखे लोगों के साथ भी यही सब तो है जनोन्मुखी विज्ञान ईईईईईकक |
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| 37. |
Write increasing order of Elcrongain affinity si N O P S |
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Answer» AL |
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| 38. |
Which of the following options are correct? (A) The difference between ionisation enthalpy (AH) and ionisation energy (IE) is directlydepencent on absolute temperature,(B) heat added to the system at lower temperature causes greater randomness as compared tosame amount of heat added at higher temperature.(C) Acontainer having N,O, gas if heated will show an increase in intensity of brown colour(D) It is easier to remove H+ from HPO - as compared to that from H PO,RESPONSE AREAHAPREVIOUSSAVE & NEXTFORCLEARLIN |
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| 39. |
Which of the following maximum freezing point |
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Answer» waterPure WATER has the MAXIMUM freezing point. The ADDITION of non-volatile SOLUTE such as NACL decreases the freezing point of water. |
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| 40. |
What is the effect of temperature on boiling point of water |
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Answer» temperature is increased, the vapour PRESSURE INCREASES; at the boiling point, bubbles of vapour FORM WITHIN the liquid and rise to the SURFACE. |
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| 41. |
Calculate the no of molecules in 24 g of oxygen |
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Answer» Mass of O 2 gas =24 gmAtomic mass =16 U (Molecular mass =32 u)Moles of OXYGEN gas, O 2 = (16+16)24 = 3224 =0.75hope it helps you |
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| 42. |
Amino acids are :1 acidic2 basic3 amphoteric4 non - polar |
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| 43. |
What is photochemical reaction? |
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Answer» emical ReactionPhotochemical reactions affect a variety of organic compounds and the RATE of decomposition DEPENDS mainly on the molecular STRUCTURE of the compound, on the intensity of light source (RADIATION in the ultraviolet–visible light range), and the presence of other reactant compounds.I hope it will HELP you please make me brainlest |
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| 44. |
IUPANames ofоСн, - сиС CСизОН |
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Answer» what is your FULL QUESTION EXPLANATION:THANKS SORRY |
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| 45. |
6)Chemical equations of some reactions are given below. 1)CH2 - CH2 + HCICH3 -CH2-Clii) nCH2 - CH2(-CH ₂ -CH ₂ -)na) Write the names of two reactions. (1)b)Write the IUPAC name of the product formed in 1" reaction (1)c) Write the structural formula for Methoxybutane & 2-methylbutane. (1) |
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Answer» Did you MEAN: 6)Chemical equations of some reactions are given below. 1)CH2 - CH2 + HCI CH3 -CH2-Cl ii) nCH2 - CH2 (-CH ₂ -CH ₂ -)n a) Write the names of two reactions. (1) b)Write the IUPAC name of the product formed in 1" reaction (1) C) Write the STRUCTURAL formula for Methylbutane and 2-methylbutane. (1) |
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| 46. |
What is recrystallization? |
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Answer» Explanation:Recrystallization is the PROCESS in which DEFORMED grains of the crystal structure are replaced by a new set of stress-free grains that nucleate and GROW until all the original grains have been CONSUMED. The process is ACCOMPLISHED by heating the material to temperatures above that of crystallization. This process is utilized in the annealing of steel, to eliminate all the effects of strain hardening such as heavy plastic deformation produced during cold working. I HOPE U UNDERSTAND MARK ME BRAINLIEST !!!!! |
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| 47. |
What is magnitude of crystal field spilliting in tetrahedral complex term of dq |
| Answer» EXPLANATION:In a tetrahedral crystal field splitting, the d-ORBITALS again split into two GROUPS, with an energy difference of Δtet. The lower energy orbitals will be dz2 and dx2-y2, and the higher energy orbitals will be dxy, dxz and dyz - OPPOSITE to the octahedral case.I HOPE U UNDERSTAND MARK ME BRAINLIEST !!!!! | |
| 48. |
7)Some organic compounds are given i) CH3 - CH2 - CH2 - CH2 - CH3ii) CH, CH,-0-CH2-CH3) CH-CH2-CH2-CH2-OHa)Identify the alcohol from these compounds. (1)b)Write the IUPAC name of the alcohol (1)c) of the above compounds one compound is an isomer of another compound. Find the isomer pair &name the isomerism? (1) |
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Answer» a. CH-CH2-CH2-CH2-OHb. PROPANOL |
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| 49. |
Mountaineers carry oxygen cilinders with |
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Answer» neers carry an oxygen cylinder ALONG with them. It is because when they CLIMB MOUNTAINS, as altitude increases, the AMOUNT of oxygen level in the atmospheric air decreases as trees are not found at higher altitudes. As a result, mountaineers suffer from DIZZINESS |
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| 50. |
Which of the following is the strongest acid ? A) CH3COOHB) HCOOHC) C6H5COOHD) H2CO3 |
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Answer» HCOOHExplanation:PLEASE MARK it BRAINLIEST ANSWER |
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