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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. |
Write a summary of 500 words about the scientific principle of a working model to the topic of Global Warming/Green House Effect |
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Answer» We are constantly harming and polluting our mother nature ,due to the increasing MODERNIZATION in our environment. This modernization is the main reason behind the recent environmental POLLUTION and the global warming. Global warming is nothing but increasing TEMPERATURE of our PLANET which is ruining the natural ECOSYSTEM of the earth. And various greenhouse gases which are produced due to the pollution are the main reason behind this global warming. We have to stop the pollution in order to stop global warming and to save our planet. |
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| 2. |
Examples of some inorganic impuritie... |
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Answer» Answer: INORGANIC compound. ... Some SIMPLE compounds that contain carbon are often considered inorganic. Examples include carbon monoxide, carbon DIOXIDE, carbonates, cyanides, cyanates, carbides, and thiocyanates. Hope this HELP you Plz mark as brainliest #Blasterboy107 |
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| 4. |
Which gas is supplied to hospitals in cylinders for artificial respiration? |
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Answer» Answer: Medical gas supply systems in hospitals and other healthcare facilities are utilized to supply specialized gases and gas mixtures to various parts of the facility. Products handled by such systems typically include: Oxygen Medical air Nitrous oxide Nitrogen Carbon dioxide Medical vacuum Waste anaesthetic gas disposal (US) or anaesthetic gas scavenging system (ISO) Source equipment systems are generally required to be monitored by alarm systems at the point of supply for abnormal (HIGH or low) gas pressure in areas such as general ward, operating theatres, intensive care units, recovery rooms, or major treatment rooms. Equipment is CONNECTED to the medical gas pipeline system via station outlets (US) or terminal units (ISO). Medical gas systems are commonly color coded to identify their contents, but as coding systems and requirements (such as those for bottled gas) vary by jurisdiction, the TEXT or labeling is the most reliable guide to the contents. Emergency shut-off valves, or zone valves, are often installed in order to stop gas flowing to an area in the event of fire or substantial leak, as well as for service. Valves may be positioned at the entrance to DEPARTMENTS, with ACCESS provided via emergency pull-out windows. |
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| 6. |
What can be the function in plants and human beings |
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Answer» Answer: Explanation: Plants maintain the atmosphere. They produce oxygen and ABSORB CARBON dioxide during photosynthesis. ... Plants provide MANY products for human USE, such as firewood, timber, fibers, medicines, dyes, PESTICIDES, oils, and rubber. Plants create habitats for many organisms |
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| 7. |
Crystalline solid with metel excess defect is called |
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Answer» Non-Stoichiometric DEFECTS |
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| 8. |
HelloWhy do uh think Noble gases are placed in a seperate group? |
Answer» Heya!❤️Noble gases are also CALLED inert gases because they have a complete octet and hence, they are very stable. They do not REACT with others ELEMENTS due to their stability. Since,they all are unreactive,have complete octet and SIMILAR behaviour, so they are placed in a separate group. Hope this helps@adiba31❤️✌❤️ |
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| 9. |
A) which portion of graph indicates that change of state is taking place?b) name the terms used for heat absorbed during changes of state involved in above processes |
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Answer» Answer: |
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| 10. |
Please balance this equation |
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Answer» 2KMnO4 + 16HCl GIVES 2KCL + 2MnCl2 + 8H2O + 5Cl2 Hope this helps you out |
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| 11. |
Why does milk get spoiled under normal temperature? |
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Answer» Answer: because MILK Don't have that MUCH temperature hope it HELPS you |
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| 12. |
Performing and observing the following reactions and classify them into(a) Combination reaction(b) Decomposition reaction(c) Displacement reaction(d) Double displacement reaction |
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Answer» Where are the REACTIONS? |
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| 13. |
Zinc sulphate solution can be stored in nickel container |
Answer» Answer:YES , Zinc can be stored in NICKEL vessel because nickel is less REACTIVE than zinc and thus it cannot DISPLACE Zinc from zinc SULPHATE solution. |
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| 14. |
Can you store copper sulphate soln in a zinc pot? |
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Answer» Answer: No definitely No. Explanation: SINCE, Zn is more REACTIVE than Cu so it will replace Cu from its aq. SOLN and Zn sulphate will be formed as redox REACTION reaction takes place. Zn+Cu(II)→Cu+ Zn(II) |
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| 16. |
Try Yourself50.0 kg of N (9) and 10.0 kg of H.(a) are mineNH.(g) formed. Identify the limiting reagent in the production of NH3 m219) are mixed to produce NH,(g). Calculate the molesin the production of NH3 in this situation.Hint : N2(9)+3H2(g) 2NH3(g) 2.3 x 103 mal NH3000fuis rented with |
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Answer» Here is your answer BUDDY |
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| 17. |
What is oxidation number???? |
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Answer» HOLA Mate.......... here your Answer.... a number assigned to an ELEMENT in chemical combination which represents the number of electrons lost (or gained, if the number is negative), by an ATOM of that element in the compound. follow me....GUYS... |
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| 18. |
Why compounds are classified as pure substances |
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Answer» Answer: Because they are MIXED with FIXED no. Of particular MOLECULES Mark me as Brainliest |
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| 19. |
✿━━━━@Anu━━━━✿______________________________✿━━━━@Anu━━━━✿ ●DEFINE Charles Law? |
Answer» ANSWERCharles' LAW implies that an ideal GAS with fixed mass and at constant pressure the change in the volume of gas is directly dependent on the atmosphere of gas. hope it HELPS ✔️ |
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| 20. |
CH3-CH=CH2 forms in the presence of B2H6 and 3H2O2/OH |
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Answer» Answer: Of this reagent is present follow ANTI markonikav rule. Anti markonikav rule: Negative part of the reagent GOES to the carbon atom where no of hydrogen is more. ☆ H+ comes from B2H6 ☆ OH- comes from H2O2 And so the product Propanol is in attachment SHARE KNOWLEDGE AND BE BRAINLY!!! |
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| 21. |
Write a short notes on plasma state and BEC? plzzz |
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Answer» Answer: Plasma is considered the fourth state of matter. The THREE other states are solid, liquid, and GAS. Plasma is a CLOUD of protons, neutrons and electrons where all the electrons have come loose from their respective molecules and atoms, giving the plasma the ability to act as a whole RATHER than as a bunch of atoms. Have a NICE day!
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| 22. |
Calculate molarity of HCL solution of strength 0.234 g/ ml |
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Answer» STRENGTH = 0.234g/ml Molar MASS of HCL = 36.5 g/mol Molarity = Strength/Molar mass = 0.234/36.5 = 0.006 mol/ml = 6 mol/L |
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| 23. |
When a teaspoon of solid sugar is dissolved in a glass of liquid water, which phase(s) are present after mixing? |
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Answer» Yes, there is no increase in VOLUME because the space present between the atoms of WATER is OCCUPIED by the sugar.therefore ifsugar is dissolved in water there is no increase in volume. |
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| 24. |
Product of electrolysis of molten nacl are sodium metal and chlorine gas. why? |
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Answer» because sodium is a metal..it goes to the CATHODE.... Explanation: |
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| 25. |
Write any three difference between solid,liquid,gas for 1 |
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Answer» Answer: Gases, liquids and solids are all made up ofatoms, molecules, and/or ions, but thebehaviors of these PARTICLES differ in the threephases. ... GAS are well separated with noregular ARRANGEMENT. LIQUID are close together with no regular arrangement. solidare TIGHTLY packed, usually in a regular pattern. |
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| 26. |
What are the type of reactions which undergo carbocation rearrangement in orgnic chemistry list? |
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Answer» Carbocationic rearrangement is undergone by that REACTION which forms a STABLE PRODUCT by stabilizing carbocation on rearrangemt |
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| 27. |
Name a metal which has no fixed shape? |
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Answer» Answer: MERCURY BRO it's LIQUID in ROOM temperature mark BRAINLIEST bro |
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| 28. |
7. Calculate the mass of the photon with a wavelengthcorresponding to the series limit of Balmer transitions ofthe He ion in kg?(A) 4.22x10-36(B) 2.24x10-34(C) 2.42x10-35(D) 4.22x10-36 |
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Answer» As in the QUESTION limit wavelength is given hence we KNOW that the ELECTRON of this transition will jump from the shell given to the infinty. So, we have to find the wavelength by using the formulae of wave number as R*Z^2(1/4) as the shell is 2 in balmer series value of R=1.0968*10^(7) and Z of He is 2. Thus, the on getting the wave number we will also know the wavelength as λ=1/(1.0968*10^(7)) = 0.91174*10^-7. Putting the value in the debroglie equation will give us the answer. We, know that the velocity of the light is 3*10^8 m/s. Hence, λ=h/mv. m= h/λv. m=6.626*10^-34 / 0.91174*10^-7*3*10^8. m= 6.626*10^-34/27.3522. m = 2.42*10^-35Kg. |
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| 29. |
Uses of bernoulli equation |
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Answer» Explanation: Since both LIQUIDS and gases are FLUIDS, we can apply Bernoulli's PRINCIPLE to things like air as WELL as water. Airplane wings PROVIDE a great example of this principle in action. Airplane wings are designed so that air will flow faster over the top of the wing than underneath it. mark brainliest bro |
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| 30. |
Why thallium shows different oxidation states? |
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Answer» Thallium shows +1 and +3 oxidation state because of inert pair effect Inert pair effect is a TERM OFTEN USED to describe valence electrons in an s orbital penetrating to the nucleus better than electrons in p orbitals making them more tightly bound to the nucleus due to poor shielding effect offered by the inner subshells |
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| 31. |
1.LESSON:1 Chemical equations and reactionsComplete the missing components/variables given as x and y in the following reactions:(a) Pb(NO3)2 (aq) + 2KI(aq) → Pbl2 (x) + 2KNO3 (y)(b) Cu(s) + 2Ag NO3 (aq) + Cu(NO3)2 (aq) + x(s)(c) Zn(s) + H2SO4 (aq) → ZnSO4 (x) + H2 (y)A solution of potassium chloride when mixed with silver nitrate solution, an insoluble whitesubstance is formed. Write the chemical reaction involved and the type of reaction.4.Why do we store silver chloride in dark coloured bottles?Give the characteristic tests for the following gases (a) CO2 (b) O2 (c) H2What happens when a piece of (a) zinc metal is added to copper sulphate solution.(b) aluminium metal is added to dilute hydrochloric acid? (c) silver metal is added to coppersulphate solution? Also, write the balanced chemical equation if the reaction occurs.What happens when zinc granules are treated with dilute solution of H2SO4 , HCl, HNO3 , NaCland NaOH, also write the chemical equations if reaction occurs. |
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| 32. |
15 example of cha ging of state of matter |
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| 33. |
Define of pHdefine PH |
Answer» HEY friend your answerthe quantity of acid in a GIVEN solution is NOTHING but its ph.hope it HELPS youfollow me!❤❤ |
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| 34. |
What is meant by saying that latent heat of fusion of ice is 3.34×10⁵ j / kg ? plzz tell me :( |
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| 35. |
Heaviest metal on earth ??? |
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Answer» You would Have PROBABLY SEEN in he periodic Table Name OS which is called Osmium This is the Heaviest Metal In 1cm³ It weighs 22grams Such HEAVY Lol Full Of Potential Thank you Regards |
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| 36. |
Heya!.. Show that Metals are malleable in nature. Answer fast please ☺ |
Answer» Hello!❤️To show METALS are MALLEABLE in nature : Materials required- IRON nail, Coal piece, Pencil lead, Aluminum wire and a hammer. Procedure - Take all the materials one by one and beat them with the help of a hammer repeatedly and note the change in shape. Observations - Iron nail flattens in shape. Coal piece breaks into small pieces and becomes powder. Conclusion - Iron nail and aluminum wire are metals, Hence they are malleable while coal and pencil lead are non-metals hence they are brittle. Hope this HELPS@adiba31✌❤️✌ |
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| 37. |
(i)Calcular the shortest and the longestwaveleng hs of the Lyman series. Given, Rydbergconstant 10967700 m ! |
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Answer» HEY see you again your question has two answer Explanation: if you look BALMER series then you will GET 365 nanometer and for lymn series you will get 1215.68 Å ok you need solution for your question |
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| 38. |
A sharp smelling while solid that sublimes on heating and is an ingredient in havan samgri |
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Answer» Answer:Camphor Explanation: It is a sublimate that is white in COLOUR and is OFTEN used in religion CUSTOMS such as HAVAN |
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| 39. |
Iron (III) oxide reacts with aluminium and gives molten iron and aluminium oxide |
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| 40. |
Boiling point of e t h y l alcohol is 78.3 degree Celsius of B and Z DNA is 80.2 degree Celsius and the water is hundred degree Celsius what information do you get |
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Answer» We get that a LARGE AMOUNT of heat is REQUIRED to boil water as COMPARED to other substances. |
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| 41. |
What is unit of calorific value of a fuel ? |
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| 42. |
Why do gases exert more pressure on the walls of the container than the solids? |
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Answer» Answer: Because the INTERMOLECULAR FORCE of attraction is very low and their MOLECULES are constantly under motion so their moving molecules EXERT more pressure on the walls of a container. |
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| 43. |
Why is mp of licl lowest among alkali metal chlorides? |
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Answer» Answer: CALCULATE the SOLUBILITY of h2 is in H2O at 25 degree Celsius of its PARTIAL pressure |
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| 44. |
What is the mass of one molecule of oxygen ??? |
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Answer» Oxygen's atomic weight is 16.00 AMU. 1 MOLE of oxygen is 6.02 x 1023 ATOMS of oxygen 1 amu = 1.661 x 10-24g ☹️☹️☹️☹️☹️ |
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| 45. |
Heya! What is chemical composition of Polyester? |
Answer» Hello! ❤️Polyester is MADE up of repeating ESTER units. An ester is a chemical compound FORMED by reaction of an ALCOHOL and an acid. For Polyester ethylene glycol and terephtalic acid are taken as monomer units to form esters which join together to give polyester. Hope this helps@adiba31✌❤️✌ |
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| 46. |
(ii) Which orbital in each of the following pairs is lower inenergy in a multi-electron system?(a) 25.2p (b) 3p, 3d (c) 3s. 4s (d) 4d, 5f |
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Answer» Option a LOWER in energy in a multi-electron system So, Option A is correct. |
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| 47. |
Why inorganic compounds are conductors where as organic compounds are insulators ? |
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Answer» Explanation: Organic COMPOUNDS are molecules and don't CONSTITUTE ions which is the CONSTITUENT of INORGANIC compounds. So they can't conduct electricity. And since most organic compounds are gases they are INSULATORS . |
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| 48. |
Melting points of three substances A,B,C are 52 degree C, 175 degree C, 80 degree C .Arrange them in decreasing order of interparticle force of attraction. Give reasons for your answer |
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Answer» Interparticle force of ATTRACTION B>C>A Explanation: As B takes larger amount of heat to melt, we see that it's interpartice force is strong and requires more energy to break. |
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| 49. |
What volume of co2 is liberated at stp by heating 4 grams of caco3? |
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Answer» Answer: REFER to attachment... hope it HELPS... please FOLLOW... |
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| 50. |
Which type of chemical reaction is csco 3 gives ca + c o to? |
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Answer» Answer: COMBINATION reaction Explanation: |
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