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 gas cant be separated from fractional distillation? |
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Answer» dioxide gas cannot be separated from fractional distillation. HOPE you GET your answer PLEASE mark it BRAINLIEST |
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| 3. |
Ch-3 ch-2 ch-2oh write the succeeding homologue |
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Answer» -ch2-ohPropanolCh3-ch2-ch2-ch2-ohButanol |
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| 4. |
When could order andamolecularity of reaction is sameity? |
| Answer» ILL ANSWER your QUESTION TOMORROW. OK don't woorry | |
| 5. |
What will be the orbital angular momentum for d electron? |
| Answer» ANSWER of ORBITAL MOMENTUM of d ELECTRON is 2 | |
| 6. |
Which alkaline earthmeral carbonate thernally most stable? |
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Answer» r Barium CARBONATE is the most STABLE ALKALINE earth metal thermally |
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| 7. |
How to arrange elements in atomic radius |
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Answer» s are ARRANGED on the BASIS of VALENCE electrons valencyatomic sizemetallic characternon metallic CHARACTER |
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| 8. |
Is sharing of electrons kniwn as covalent bond |
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Answer» ring of ELECTRONS is KNOWN as a covalent bondfor eg Sulphur DIOXIDE FORMS a covalent bond.... |
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| 9. |
When we put some acetone or perfume on a palm we get cooling sensation give reason? |
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Answer» e Acetone or PERFUME on our Palm we GET a cooling sensation because these SUBSTANCES VAPORIZE due to the HEAT of our body. there vaporization gives us this cooling sensation |
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| 10. |
To estimate the dissolved oxygen content of fresh water sample zoology experiment experiment |
| Answer» RD generation, single-channel dissolved oxygen (PO2) and temperature monitorOxygen (pO2) & temperature monitorIn vivo & in vitro applicationsFully ‘plug and PLAY’; no calibration proceduresSingle-channel MONITOR | |
| 11. |
A dilute aqueous solution of sodium fluoride is electrolysed ; the products at the anode and cathode are |
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Answer» lyte: NaF (+H20) aqueous ____________________________Electrolytic REACTION: NaF⇌ (Na+) + (F-) H2O⇌ (H+) + (OH-) _____________________________Reaction at cathode:H+ and Na+ cations come towards the cathode but H+ ions are DEPOSITED.(H+) + e = HH+H= H2 (Hydrogen gas) _____________________________Reaction at anode:OH- and F- ions comes towards the anode but only OH- ions gets deposited at the anode.(OH-) - e= OHOH+OH= H2O + OO+O=O2 (OXYGEN gas) ______________________________Therefore, Products FORMED are:a). Hydrogen:- Cathodeb). Oxygen:- Anode |
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| 12. |
Answer me fast tomorrow is my test |
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Answer» book ALREADY answer is GIVEN so why we will answer your questions send your answer I will TAKE out important LINES in your answer |
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| 13. |
what is balanced equation of silver nitrate+potassium iodide gives us silver iodide+potassium nitrate |
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Answer» d equation for this RXN is AGNO3(AQ)+KI(aq)----------->KNO3(aq)+ Agl(aq) |
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| 14. |
Differential between roasting and calcinations process in metallurge |
| Answer» G TAKES place in the presence of OXYGEN while CALCINATION is the process that takes place in the ABSENCE of oxygen. | |
| 15. |
What type of interaction held the molecules together in solid co2? |
| Answer» AL's FORCES should be the ANSWER | |
| 16. |
Amount of oxygen gas present in a 2 l vessel at 5 atm pressure and 27c is |
| Answer» VOLUME =2lpressure =5atmtemperature =27°c =27+273k =300KN=?wktPV=nRtn=PV/Rtn=5*2/0.0821*300. =10/24.63 =0.406moles | |
| 17. |
The three imaginary elements xyz represent dobereiner's triads atomic mass of x is 14 and that of y is 46 find atomic mass of z |
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Answer» reiner triads the sum of first and THIRD element is the same as MIDDLE element. In GIVEN first =x=14 3rd=y=46then z=?we know that x+z=y 14+z=46z=46-14=32 |
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| 19. |
Give one example of each of the following case:- monoatomic molecule, an atom which has 17 protons |
| Answer» E has SEVENTEEN PROTONS | |
| 20. |
An ideal gas has molar specific heat 5R/2 at constant pressure. If 300 J of heat is given to two moles of gas at constant pressure, the change in temperature is? |
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Answer» xnmfMcmxmxmjdCFCHFXGCkxjjxjzjjzmxmxmxj |
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| 21. |
What plastic is used to make fire extinguisher's costume? |
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Answer» undThe hand-held fire extinguisher is simply a pressure vessel from which is expelled a material (or agent) to put out a fire. The agent acts upon the chemistry of the fire by removing one or more of the three elements NECESSARY to maintain fire—commonly referred to as the fire triangle. The three sides of the fire triangle are fuel, heat, and oxygen. The agent acts to remove the heat by cooling the fuel or to produce a barrier between the fuel and the oxygen supply in the surrounding air. Once the fire triangle is broken, the fire goes out. Most agents have a lasting effect upon the fuel to reduce the possibility of rekindling. Generally, the agents applied are water, chemical foam, dry powder, halon, or carbon dioxide (CO 2 ). Unfortunately, no one agent is effective in fighting all types (classes) of fires. The type and environment of the combustible material determines the type of extinguisher to be kept nearby.HistoryFire extinguishers, in one form or another, have probably postdated fire by only a short TIME. The more practical and unitized extinguisher now commonplace began as a pressurized vessel that spewed forth water, and later, a combination of liquid elements. The older extinguishers comprised cylinders containing a SOLUTION of baking soda (sodium bicarbonate) and water. Inside, a vessel of sulfuric acid was positioned at the top of the body. This design had to be turned upside down to be activated, so that the acid SPILLED into the sodium bicarbonate solution and reacted chemically to form enough carbon dioxide to pressurize the body cylinder and drive out the water through a delivery pipe. This volatile device was improved by placing the acid in a glass bottle, designed to be broken by a plunger set on the top of the cylinder body or by a hammer striking a RING contraption on the side to release the acid. Cumbersome and sometimes ineffective, this design also required improvement.Design |
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| 22. |
In a saturated solution of the sparingly soluble strong electrolyte AgIO3 (molecular mass = 283) the equilibrium which sets in is AgIO3 [s] gives Ag+ +IO3- If the solubility product constant Ksp of AgIO3 at a given temperature is 1.0 × 10-8 , what is the mass of AgIO3 contained in 100 mL of its saturated solution |
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Answer» e here is your answer.In a saturated solution of the sparingly soluble STRONG electrolyte AgIO3 (molecular mass = 283) the equilibrium which sets in is AgIO3 [s] GIVES Ag+ +IO3- If the SOLUBILITY product constant Ksp of AgIO3 at a given temperature is 1.0 × 10-8 , what is the mass of AgIO3 contained in 100 mL of its saturated solution is in the attachment above.thank you.plzzzzzzzzzzzzzzzzzzzzzzzzz mark my answer as brainliest.plzzzzzzzzzzzzzzzzzzzzzzzzz follow me. |
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| 23. |
How will you prove that air is needed to burn a material |
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Answer» ning OXYGEN is required.Without oxygen the burning will not happen. So the AIR is needed to BURN a MATERIAL. Air is a MIXTURE of many gases. |
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| 24. |
Question ✔ 1.) What is mole molecules ?2.) Define mixture?3.) Define compound?4.) what is Matter? 5.) What is an atom ? |
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Answer» àä ANSWERS:1.) ➡️A molecule is the SMALLEST particle in a CHEMICAL element or compound that has the chemical PROPERTIES of that element or Compound.2.) ➡️A mixture is a combination of two or more PURE substances in which each pure substance retain its individual chemical properties.3.) ➡️Two or more elements chimically bonded together are called Compounds.4.) ➡️Anything that occupies space and have its own mass is called ATOM.5.) ➡️An atom is a smallest particle which takes part in the chemical reactions.thanks....nice to help you ✌️✌️ |
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| 25. |
How is biodiversity effected by excessive use of fossil fuel |
| Answer» ND ,====》》》》=======》》》》》 your answer is ....... BIODIVERSITY means the flaura and fauna and the fossil fuels are obtained by then after million of years by digging them in EARTH ..so if we use much fossils fuels then they get very less and the biodiversity there is a burden to take fossils fuels EARLIER. ... .Hope it helps you .....Pls follow me and mark as brainiest answer | |
| 26. |
What is starch and its use |
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Answer» ch is a type of carbohydrate. Its molecules contain carbon, HYDROGEN and OXYGEN atoms.2. Iodine solution is USED to TEST for starch.3. The digestion of starch MAKES glucose. |
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| 27. |
Why are coal and petroleum so versatile? |
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Answer» considered as fossil fuel as it is formed because of carbonization of dead remains of living organism. It is MINED from EARTH and processed to obtain many useful products, such ascoal, coke, coal tar, ETC. Hence, coal and petrol both are fossil fuels and also known as VERSATILE. |
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| 28. |
What happens when crystals of iron sulphate are strongly heated? |
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Answer» te ;-) ;-) ;-) On heating, ferrous sulphate crystals lose WATER and anhydrousferrous sulphate (FESO4) is formed. So their colour changes from light GREEN to WHITE. On furtherheating, anhydrous ferrous sulphatedecomposes to form ferric oxide (Fe2O3), sulphur dioxide (SO2) and sulphur trioxide (SO3).HOPE it helps |
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| 29. |
Is copper oxide an acidic oxide? |
| Answer» II) oxide is an amphotericsubstance, which MEANS it can ACT as an acid or a base. It is non-flammable and insoluble in water.Copper(II) oxide or CUPRIC oxide is the INORGANIC compound with the formula CuO. A black solid, it is one of the two stable oxides of copper, the other being Cu2O or cuprous oxide. As a mineral, it is known as tenorite. | |
| 31. |
What is the mean of saying kmno4 in alkaline or acidic medium? |
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| 32. |
What is the hydrolysis of diester in the presence of base? |
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Answer» sis is a most important REACTION of ESTERS. Acidic HYDROLYSIS of an ester gives a CARBOXYLIC acid and an alcohol. BASIC hydrolysis of an estergives a carboxylate salt and an alcohol |
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| 33. |
What is the meaning of broad singlet in nmr spectroscopy? |
| Answer» PORT me I ALWAYS be here to HELP you but I can't not help you at this MOVEMENT | |
| 34. |
12.2 g of benzoic acid (mw =122) in 100 g benzene has depression in freezing point 2.6o2.6o, kf=5.2 oc kg mol1kf=5.2 oc kg mol1. If there is 100% polymerization, the number of molecules of benzoic acid in associated state is: |
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Answer» of benzoic acid (MW = 122) in 100 g benzene has DEPRESSION in freezing point 2.6o2.6o, kf=5.2 OC KG mol1kf= 5 |
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| 35. |
In aerbic ripiration total number f atb molecules from 1glucose molecule is |
| Answer» 6 OR 38 MOLECULES OF ATP FROM ONE MOLECULE OF GLUCOSE | |
| 36. |
The rate constant for the decomposition of ethyl iodide a5 600k is 0.0000160s-1. Its energy of activation is 209kj/mol.Calculate the rate constant of the reaction at 700k. |
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| 37. |
Who are lover of studies and why |
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Answer» lover of studies. STUDYING is the only way if we gain we can achieve ANYTHING in LIFE . EVEN a MOON. |
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| 38. |
Function of andro humanoid robot |
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Answer» oid robot is a robot with its BODY shape BUILT to resemble the human body. The design may be for functionalpurposes, such as interacting with humantools and environments, for EXPERIMENTAL purposes, such as the study of BIPEDAL LOCOMOTION, or for other purposes. |
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| 39. |
Explain the harmful effects of fuels? |
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Answer» of fuel has the following harmful effects:1) Fuels CONTAINING carbon such as wood, coal etc. release UNBURNT fine carbon particles which cause respiratory diseases.2) Incomplete combustion of fuels PRODUCES carbon monoxide which is a poisonous gas.3) Increased concentration of carbon dioxide released by the burning of fuels causes global warming.4) OXIDES of sulphur and nitrogen released from burning of coal and diesel dissolve in rain water to form acid rain.This rain damages soil, PLANTS, buildings etc.Hope it helps❤️❤️ |
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| 40. |
Haw to determine the no. of electrons protons and neutrons in an atom? |
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Answer» find a periodic table ONLINE or in a CHEMISTRY book.In tests, normally, a periodic table will be provided...Using the group (columns) or period (rows) can make the element easier to locate on the table.You can also search the table for the symbol of the element if you don’t know any other propertiesFor example, boron (B) has an atomic number of 5, therefore it has 5 protonsFor example, boron (B) has an atomic number of 5, therefore it has 5 protons and 5 electrons.However, if the element includes a negative or POSITIVE ion, then the protons and electrons will not be the same. You will have to CALCULATE them. The ion number will appear as a small superscript after the elementMake sure that you round the atomic mass to the nearest whole number. For example, the atomic mass of boron is 10.811, but you can just round the atomic mass up to 11.For our boron example, 11 (atomic mass) – 5 (atomic number) = 6 neutrons |
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| 41. |
Copper fillings can be obtained from a mixture of copper and iron fillings by using a |
| Answer» G COPPER SULPHATE | |
| 43. |
Chemical reaction evolve in Reiner Tiemann Reaction |
| Answer» GIVE you the full mechanism of the reaction on tommorow PLEASE remember to me by write it on comment on MORNING before 7:15 as i leave for running and for exercise. then i will be able to give you answer on EVENING | |
| 44. |
Is combustion possible without oxygen ? explain... |
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Answer» d not BURN in the classical, combustion SENSE because as you noted, there is no oxygen PRESENT. Paper is a carbon-based material and so it requires oxygen to combust and form products like solid carbon, carbon dioxide, carbon monoxide, ETC.. However, combustion is not the only thing that COULD happen here. |
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| 45. |
What is the meaning of coal tar?? |
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Answer» r means the THIN BLACK liquid PRODUCED by distillation CONTAIN methane called as coal tar |
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| 46. |
A process where an atom loses one or more electrons |
| Answer» CESS is Cationization | |
| 47. |
What is a gold leaf electro scope |
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Answer» a simple device to detect the electric charge on an object .it consists of copper rod which have a metal disc at the upper end and two thin gold leaf at the other .when the UNCHARGED object is taken NEAR the disc the leaf REMAINS close, and when the charged object is taken near disc the golden leaf OPEN please mark this answers as a brainliest answers please please please please please please please please please please please |
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| 48. |
Physical charterstatic of salt |
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Answer» re the product of neutralization reaction. It means when acid REACT with base to form salt and water.PHYSICAL CHARACTERISTIC OF SALTS:-a). Salts pass electricity in molten state but not in solid state. So that salts are used as an electrolytes in electrolysis process.b). DUE to strong electrostatic FORCE of attraction between ions in salts, the melting point of salt is high.c). Salts are dissolved in water. It means salts are soluble in water.d). Salts aren't dissolved in organic solvents. It means salts are insoluble in organic solvents. |
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| 49. |
H. Ishikawa, f.A. Mohamed, t.G. Langdon, the influence of strain rate on ductility inthe superplastic zn-22% al eutectoid, phil. Mag. 32 (1975) 1269-1271. |
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| 50. |
Which of the following is acidic (1) 1-butyne (2) 2-butyne (3) 1-butene (4) 2- butene |
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Answer» l sp hybridized carbon POSSESS acidic character.sp2 hybridized compound is not acidic.Hence, from 4 OPTIONS 1ST and 2nd are sp hybridizedbut from both only 1st is terminal alkyne(sp hybridized).hence from all of the four 1-butyne is only acidic.Like and comment!!.. if you are statisfied by my way of understanding. |
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