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 temperature affects vitmain c content? |
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Answer» The amount of Vitamin C CONTENT of some fresh fruit degradaded with time was INVESTIGATED; PINEAPPLE, Orange, Watermelon and Tomato stored under difference conditions. The juices from the samples were extracted and vitamin C content in the JUICE was analysed at ROOM temperature, 40 0 C and at seven (7) days storage by indophenols titration method. The result revealed that |
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| 2. |
Which of the following Will show Tyndall effect? milk and sugar solution. |
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Answer» Milk will show tyndall EFFECT......because it is a COLLOIDAL SOLUTION.tyndall effect OCCURS in colloidal solution... |
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| 3. |
14 g of gas has 3.011 x 10^23 molecule.the molecular weight of gas |
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Answer» 28 of molecul ar WEIGHT of GAS |
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| 4. |
Do question no.9 all parts |
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Answer» Hey! |
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| 5. |
What are homogeneous mixture? |
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Answer» A HOMOGENEOUS mixture is simply any mixture that is UNIFORM in composition throughout.. I HOPE this HELPS you |
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| 6. |
How will be the melting in intramolecular hydroden bonding |
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Answer» Intramolecular H-bonding as we KNOW a strong FORCE.. It can be melt with high TEMP in presence of some other SUBSTANCE LIKE acid in absence of air... |
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| 7. |
Write any one property of suspension. |
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Answer» : A suspension is a heterogeneous mixture in which solids are DISPERSED in liquids. The SOLUTE particles insuspension do not DISSOLVE but remain suspended throughout the medium. |
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| 8. |
How much water should you drink a day maximum |
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| 9. |
What is the difference in pH for 1/3 and 2/3 stages of neutralisation of 0.1 M CH3COOH with 0.1 M NaOH. |
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Answer» CH₃COOH(aq) ⇌ CH₃COO⁻(aq) + H⁺(aq) ….. Ka = 1.8 × 10⁻⁵ |
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| 10. |
Which one of the two solution will scatter light, sugar solution ,or soap solution? |
| Answer» SUGAR SOLUTION................ | |
| 11. |
When mixture of 30ml of O2 and 30ml of carbon monoxide are sparkled, the volume of the gas after explosion=? |
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Answer» 2CO. + O2. --> 2CO2 by using GAY Lussac's law volume of FORMED CO2 = 2 × 30ML = 60 ml hence , the volume of gas after explosion= 60ml hope this HELPS...... |
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| 12. |
Define melting an Boiling |
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Answer» Hey |
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| 13. |
How we know that this place is rich of oil and gas |
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Answer» HEY dear !!!!!!! @@$by FINDING the quality of SOIL and [email protected] ok.... |
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| 14. |
A vessel of volume v = 5 litre contains 1.4 g nitrogen and 0.4 g of h3 |
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Answer» [email protected] +91-9566306857 (or) +91-9176170648  Ask Questions, Get Answers ASK Home >> JEEMAIN and NEET >> Chemistry >> STATES of Matter: Liquids and Gases A vessel of volume 5 litre contains 1.4g of nitrogen at temperature 1800K. Find the pressure of the gas if 30%30%of its molecules are DISSOCIATED into atoms at this temperature. (a)2.92atm(b)1.92atm(c)3ATM(d)1atm(a)2.92atm(b)1.92atm(c)3atm(d)1atm jeemain chemistry physical-chemistry class11 unit4 states-of-mattergas-laws medium q68  Share asked Feb 20, 2014 by sharmaaparna1 retagged Sep 17, 2014 by sharmaaparna1  1 Answer N2⟺2NN2⟺2N Initial Moles of N2=1.428N2=1.428 Initial Mole of 2N = 0 Mole after dissociation of N2=1.428×70100N2=1.428×70100 Moles after dissociation of 2N = 1.428×2×301001.428×2×30100 Total Mole = 1.428×70100+1.4×60100×281.428×70100+1.4×60100×28 =1.428×[130100]=1.428×[130100] P×5=1.4×13028×100×0.0821×1800P×5=1.4×13028×100×0.0821×1800 P = 1.92 atm |
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| 15. |
What is lussacs law? |
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Answer» The LAW of combining volumes states that, when gases REACT together to form other gases, and when all volumes are MEASURED at the same temperature and pressure. |
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| 16. |
How many total isomers having molecular formula C4h6 |
| Answer» 2 ISOMERS has MOLECULAR FORMULA C4H6 | |
| 17. |
How many isomer having molecular formula c4h6 |
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Answer» ★ Ello ★ |
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| 18. |
Calculate the mass of 112ml hydrogen at stp |
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Answer» HEY here is your answer 112 cm³ = 112 ML = 0.112 l = 0.112/22.4 mol = 5*10^-3 mol = 5*10^-3*2.016 g = 0.01 g hope it will HELP you.. |
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| 19. |
Difference between Polyethylene and poly vinly |
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Answer» Polyethylene (PE) and polyvinylchloride (PVC) are the plastic pipes most often used for underground utility construction. ... PE is more flexible than PVC. A primarydifference is the way lengths ofpipe are joined TOGETHER and to other pipe MATERIALS. Compressed air or gases ought to not be INTRODUCED in to PVC pipes. |
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| 20. |
The ratio of volume of water present in a given point |
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Answer» What is the GIVEN for here |
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| 21. |
Heightraised by water due to surface tensuoin |
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Answer» Hey here is your ANSWER, |
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| 23. |
State two charatersities of matter demostrated by Diffusion Brownian Motion |
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Answer» Hey friend ..... :-) |
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| 24. |
Define melting point of substance ? What is the melting point of ice ? |
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Answer» MELTING point is the TEMPERATURE at which a SUBSTANCE becane to melt. Melting point of ICE is 0°. |
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| 25. |
An oxide of a metal which is amphoteric in nature ?? OPTIONS _ (Pb0,Pb3o4,Pb02 |
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Answer» HEY MATE!! I THINK PB02 is the ANSWER... |
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| 26. |
Find the equilibrium constant for equilibriumHCOO– + H2O HCOOH + OH–In a solution of 0.1 M HCOONa.Ka(HCOOH) = 1.8 × 10–4 |
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Answer» I think this answer 6 Explanation: |
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| 27. |
Calculate the number of water vapour molecules present in 1ml of water vapour at STP |
| Answer» HOPE this'll HELP you.... | |
| 28. |
Atomic radius increases down the group. give reason |
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Answer» This is CAUSED by the INCREASE in the number of protons and ELECTRONS across a period. One PROTON has a greater effect than one electron; THUS, electrons are pulled towards the nucleus, resulting in a smallerradius.Atomic radius increases from top to bottom within a group. This is caused by electron shielding. |
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| 29. |
What types of impurity atoms are added to increase the number of conduction-band electrons in intrinsic silicon? |
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Answer» The ANSWER is : Pentavelent atoms. |
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| 30. |
Why does steam cause more serve burns than boling water ? |
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| 31. |
Repeatable entity of a crystal structure is called as |
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Answer» Hii FRIEND! |
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| 32. |
Why does tbe temperatur remain cinstant during the melting of ice even though heat is supplied continuously? |
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Answer» HOLA !! ------------------ ------------------ Due to latent heat of vaporisation the ICE even on HEATING doesn't change the TEMPERATURE. ---------------------------- ---------------------------- HOPE U UNDERSTAND |
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| 33. |
Please solve this question. Will mark as brainliest |
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Answer» II: 0.2 III: 8.0×10-2 IV: 0.0 |
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| 34. |
Define the term uniform motion, non uniform motion |
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Answer» The term uniform MOTION the BODY is at REST to remains same and non uniform motion the body is at rest as WELL as motion and that body is not STATIONARY of a same place is known as non uniform motion. |
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| 36. |
Law of proportion of combination of elements |
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Answer» This is the LAW which STATES that the reactants and the PRODUCT will have equal PROPORTION of combination |
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| 37. |
Bhors's theory of atom |
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Answer»
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| 38. |
Effet of contat time on dye concentration |
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Answer» HOPE it HELPS you MARK me as BRAINLIEST |
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| 39. |
How to calculate reaction rate with temperature kp |
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Answer» During the course of the reaction shown below, reactants A and B are consumed while the CONCENTRATION of PRODUCT AB increases. The reaction RATE can be determined by measuring how FAST the concentration of A or B decreases, or by how fast the concentration of AB increases. |
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| 40. |
What do you mean by saying that the molality of solution is 0.1 |
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Answer» molality of a SOLUTION is DEFINED as the number of MOLES of solute per kilogram of solvent. |
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| 41. |
0.5faraday current flows in 1 mole NaCl. How many gms Cl will be produced |
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Answer» 1 FARADAY GIVES 1MOL CL. That is,35.5g. So 0.5 faraday gives 35.5/2=17.75g .I THINK this will help |
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| 42. |
A base which is not an alkali (KOH,Cu(OH)2,NH4OH) |
| Answer» CU{oh}2 is not SOLUBLE in WATER so it is not an ALKALI | |
| 44. |
Define globulars protein in biochemistry |
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Answer» Globular proteins play MANY biological roles, including acting as enzymes, hormones, immunoglobulins, and transport molecules. Hemoglobin is a globular PROTEIN found in red blood cells. It is made of four polypeptide CHAINS, each CONTAINING a heme group that binds and transports OXYGEN through the blood stream. |
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| 46. |
Calculate the relative molecular masses of : (a). (NH4)2Cr2O7(b). CuSO4.5H2O(c). (NH4)2SO4(d). CH3COONa(e). Potassium chlorate |
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Answer» Hello Dear. Here is the answer--- →→→→→→→→→→ For calculating the Relative Molecular mass, we need to know the atomic masses the of the ELEMENTS mentioned in the given Chemical Formula. Thus, the atomic masses of some of the elements which are in the question are---- Atomic Mass of NITROGEN = 14 ----------------------------Hydrogen = 1 . ------------------------------ CR = 52 -----------------------------Oxygen = 16 -------------------------------Copper = 64 -------------------------------Sulphur = 32 -----------------------------------Sodium = 23 ---------------------------------Potassium = 40 -------------------------------Chlorine = 35.5 -------------------------------CARBON = 14 Now, the Relative atomic masses of the given compounds are---- (a) For Relative Molecular Mass, (NH₄)₂Cr₂O₇ = 2(14 + 4 × 1) + 2 × 52 + 7 × 16 = 2 × 18 + 104 + 112 = 36 + 216 = 252 (b) CuSO₄.5H₂O = 64 + 32 + 16 × 4 + 5(2 × 1 + 16) = 96 + 64 + 90 = 160 + 90 = 250 (c) (NH₄)₂SO₄ = 2(14 + 4 × 1) + 32 + 4 × 16 = 2 × 18 + 32 + 64 = 36 + 96 = 132 (d) CH₃COONa = 14 + 3 × 1 + 14 + 16 + 16 + 23 = 28 + 3 + 32 + 23 = 60 + 26 = 86 (e) Potassium Chlorate. Chemical Formula of Potassium Chlorate = KClO₃ KClO₃ = 40 + 35.5 + 3 × 16 = 75.5 + 48 = 123.5 →→→→→→→→→→→ Hope it helps. Have a Nice day. |
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| 47. |
Different factor on which fluorescence depends |
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Answer» Fluroescence DEPENDS UPON NATURE of the gas and the VOLTAGE supplied to it and the atomspheric pressure |
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| 48. |
How 99% Na is prepared |
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Answer» Solid sodium HYDROXIDE is obtained from this solution by the EVAPORATION of water. Principle — In castner-kellner method NAOH is prepared by the electrolysis of AQUEOUS solution of NaCl (Brine) |
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| 49. |
Sunlight and groundwater and both renewable resources what is the difference between them? |
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Answer» Their is LIMITED AMOUNT of groundwater PRESENT on the earth whereas SUNLIGHT has TREMENDOUS amount of energy. |
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| 50. |
State the type of reaction represented by the following equation |
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Answer» The FIRST one is a double displacement reaction because TWO ELEMENTS exchanged their places |
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