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. |
IS STYRENE (ALSO KNOWN AS PVC GAS ) POISNOUS? |
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Answer» Animal studies have shown that inhalation of styrene CN RESULT in changes in the lining of nose and damage to the liver. However, animals may be more SENSITIVE than humans to the nose and liver effects. Impaired learning has been observed in rats exposed to HIGH DOSES of styrene. |
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| 2. |
1.Generally which of the following is available in three states a) Petrolb) Waterc) Milkd) Kerosene2. Which one is not a fluid?a) Ironb) Airc) Waterd) Oil3. Which of the following is not a true solid?a) Woodb) Glassc) Sponged) Rubber band4. A substance has neither a fixed shape nor a fixed volume. Which physical state is represented bythis statementa) Solidb) Liquidc) Gasesd) None of these5. Intermolecular forces of altractions are least ina) Solidb) liquidc) Gasesd) Plasma6. The strongest inter particle forces of altraction present ina) Sodium chloride b) Oxygenc) Waterd) Ethanol7. Electronic configuration of nitrogen isa) 1s 2s 2p? b) 1s 2s 2p' c) 1s 2s 2p d) 1s 2s 2p8. Which of the following is a compound ?a) H2b) CI2c) N2d) NH39. Which of the following is an elementa) O2b) H2Oc) HCId) NH310. Which of the following is a moleculea) H2Ob) N2c) O2d) All |
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Answer» 1(B)WATER2.(A)IRON3.(B)GLASS4(C)GAS5.(C)GASES6.(A)Sodium chloride7.()K-2, L-58(D)NH39(A)O210(D)ALLHOPE THIS HELPED U!PLS MARK IT THE BRAINLIEST!!!!!!!!!!!!!!!! |
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| 3. |
Difference between thermoplastic and thermo setting polymer with examples |
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Answer» The answer of your.Explanation:The primary PHYSICAL difference is that thermoplastics can be remelted back into a liquid, whereas thermoset plastics always remain in a PERMANENT solid state. THINK of thermoplastics as butter – butter can be melted and cooled multiple times to form VARIOUS shapes. |
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| 4. |
Name of this compound. (i) K2 [Fe Cen), (4) 2 (Nh3)(1) [cr [CN)2 CH 2 O) 4 ] [co Coxa (en](1) [cu (NH3)2 Cle](o) [cr (NH3) 3 (NC) 2 CH2O)] +(v) [Fe(CN) 6)4 - |
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Answer» That is the best question is NOTHING in the world.Explanation:IWHY don't you answer because I need two points on the brainly that's why not give the answer please sorry to give the answer but I see you in the next TIME give the answer in the next time give the answer is surely and you you you follow me I follow you get that is make that is my TRADITIONAL way to find out the world thank you I am sorry ALSO that I not give you answer but next time give you answer that your better and send the world. |
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| 5. |
Calculate the molecular masses of H2 , O2 , Cl2, CO2, CH4, C2H6, C2H4, NH3, CH3OH. |
| Answer» EXPLANATION:H2 = 2O2 = 32Cl2 = 71CO2 = 46CH4 = 16C2H6 = 30C2H4 = 28NH3 = 17CH3OH = 32 | |
| 6. |
Ccl4 exist but ccl5 does not exist why |
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Answer» because CARBON having only 4 bonds FREE .. so carbon can't react with 5 atoms of CL |
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| 7. |
Name the metal which react with waterand react with stream |
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Answer» from magnesium to iron in the activity SERIES of metals, react with steam (but not H2 O) to FORM the metal OXIDE and HYDROGEN gas.Magnesium + steam→Magnesium oxide + Hydrogen |
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| 8. |
A change in which the original substance can obtained back by change of condition is called? opposition,reversible change,physical change,chemical change,both a&b |
| Answer» REVERSIBLE CHANGE..EXPLANATION:MARK ME AS BRAINLIST..FOLLOW ME ✊. | |
| 9. |
Write a three steps of addition of H2O in the presence of dilute H + on propene to form propan-2-ol |
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Answer» fsjgsjdhkExplanation:bmskgjdhhjkdhj jjwjcjjrhhkwjh hiwicrbkwugebbr hishvekkshjeheyje hisjvtsujvsgujs gheigheyijefeh gieuhejuehueyjrv gejeuehrbbrhdjsudfhejwudtsj jwjrhdy hsjsjebvevhsisjehehe hsjsjej |
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| 10. |
Where does the mass increase of water when we add salt or sugar in it |
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Answer» because not only are you adding more mass to the solution, some of the water molecules ESSENTIALLY MOVE further apart both of which increase volume. When you ADD salt to water it breaks down into sodium and CHLORIDE ions. ... So if you add a teaspoon of sugar to a teaspoon of water you will still have 10x more water molecules.if you find it helpful plz mark me BRAINLIEST |
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| 11. |
Hello to all ! please help me in this question :What are the three ways to express concentration ? |
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Answer» e this is your ANSWER CONCENTRATION can be expressed as PERCENT by volume, percent by mass, and molarity.Hope it HELPED you Please MARK my answer as brainliest |
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| 13. |
30. Complete the reaction: Cr20712- + Sn^2+ +H+ ----> * (2 Points) |
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Answer» Such a deadliest qstn.....Cr2O72– + 3Sn2++ 14H+ → 2CR3+ + 3Sn4+ + 7H2O(II) MnO4– + 5Fe2– + 8H+ → 5Fe3+ + Mn2+ + 4H2O.Hope this hepls u and plz MARK as BRAINLIEST |
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| 14. |
Does chemical change include variations in temperature? |
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Answer» in TemperatureIf temperature increases, as it does in most REACTIONS, a chemical change is LIKELY to be occurring. This is different from the physical temperature change. During a physical temperature change, ONE SUBSTANCE, such as water is being HEATED. |
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| 15. |
give reason in favour of your answer - The room temperature of a day was 20 degree celsius . The fuel A and B have ignition temperature 22 degree celsius and 29 degree celsius respectively. which fuel is more safe to use ? |
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Answer» I think fuel B of ignition temperature 29 degree CELSIUS COZ it is not very close to the ROOM temperature 20 degree Celsius |
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| 16. |
Number of carbons for C5H10 |
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Answer» re TOTALLY 5carbons with 10 HYDROGENS. its NAME is PENTENE... |
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| 17. |
The principle in movement of glaciers in mountain valley.? |
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Answer» A glacier is a large accumulation of MANY years of snow, transformed into ice. This solid crystalline material deforms (changes) and moves. Glaciers, also KNOWN as “rivers of ice,” ACTUALLY flow. Gravity is the cause of glacier motion; the ice slowly FLOWS and deforms (changes) in response to gravity.Explanation:I hope this helps u Please mark this answer as brainliest |
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| 18. |
A change is a chemical change when it is accompanied by opposition energy change,formation of a new substance,change in chemical properties,all the abovep |
| Answer» CHEMICAL CHANGE change FORMATION of a NEW SUBSTANCE | |
| 19. |
Construct root 7 on no.. line |
| Answer» AR ❤️ UR ANSWRR IS ABOVE!! => SEE THE ATTACHMENT ____________________HOPE IT HELPS ❤️ THNKX MY ANSWERS ❤️ #followme ❤️ ❤️ ____________________ | |
| 20. |
How many structural isomers does C3 H6 Br2 Cl contain |
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Answer» re FOUR isomers altogether. Of these, 1,2-dichloropropane is CHIRAL and optically active.If you satisfy on my answer PLEASE MARK it BRAINLIEST ✏️✏️✏️✏️✏️ |
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| 21. |
2,3 - dichloro - 5 hydroxy oct - 4 - en - 1 - oic acid |
| Answer» HII here is ur answer, I HOPE it may help u dear.......nd ya ORGANIC is my FAVOURITE part in CHEMISTRY... | |
| 22. |
Which among the following is not matter a) smog b)cold c)air d)cold drink |
| Answer» SEE belowExplanation:I THINK that " B" is the CORRECT ANSWER. | |
| 23. |
An element 'x' belongs to 1st gp in periodic table.x-gas, its covalent radius = 0.37 à Identity and write its symbol. |
| Answer» HYDROGEN is the nameH is the SYMBOL for it | |
| 24. |
vapour pressure over the solution of two liquids 1 and 2 at a particular temperature varies linearly with the mole fraction of a component |
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Answer» Roult Law: For a solution of VOLATILE liquids, the partial vapor pressure of each COMPONENT of the solution is directly proportional to its mole fraction present in the solution. ... TOTAL vapor pressure over the solution varies linearly with the mole fraction of component 2. |
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| 25. |
Does formation of salt is crystallization or evaporation |
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Answer» The process USED to MAKE salt is evaporation.PLEASE MARK IT AS A BRAINLEST ANSWER.HOPE YOU WILL LIKE IT. |
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| 26. |
A change is a chemical change when it is accompanied by opposition energy change,formation of a new substance,change in chemical properties,all the above |
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Answer» The CHANGE is noticed when there's a formation of a new SUBSTANCE accompanied by OPPOSITION ENERGY change included with few changes in CHEMICAL properties and composition Hope it helps you Mark me BRAINLIEST |
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| 27. |
What were the limtaion of dobereniers classification of elements |
| Answer» HOPE this HELPS you EXPLANATION:Please mark me as brainliest | |
| 28. |
What is the difference between ionic and metallic radius? PS: please don't give answer for atomic and ionic radius! |
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Answer» ns are the outermost part of atoms, so are directly responsible for the radius. Metal atoms LOSE electrons to BECOME ions, so their ionic radius is SMALLER than their atomic radius. Non metal atoms gain electrons to become ions, so their ionic radius is larger than their atomic radius. Hope that helps.Metallic ND ionic is same |
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| 29. |
23Why H2S inacidic butho2 is natural |
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Answer» - ACIDITY CONCEPT :- Acidity of H--M DEPENDS on the bond DISSOCIATION energy of H--M. SOLUTIONSDown the group, bond dissociation energy of H--M decreases DUE to increases in size of M.Since, bond dissociation energy of H20 > H2S , H2S is more acific than H20. |
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| 30. |
you have been providedwith three test tubes one of them contain distlled water the other two contain an acidic solution and abasic solution ,respectively .if you are given only red litmus paper .how will you identify the content of each test tubes |
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Answer» inA the litmus paper occurs no CHANGE INB to the litmus paper occurs no changebut in c as the solution is basic when it is dipped by RED litmus paper then the paper changes into blue colour hence we can conclude that when red litmus paper is DROPPED in a basic solution then changes into blue colourExplanation:hope you could get the concept that1 when red or blue litmus paper is dipped in a neutral solution like distilled water then no change occurs in the litmus paper2 if you dip a blue litmus paper in a basic solution then NOTHING change occurs in the litmus colour ; but when you drop blue litmus paper in acid then it changes into red colour 3 if YouTube per a red litmus paper in acidic solution then it changes to blue colour this is the interference |
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| 31. |
1. Write any two daily life applications of Buckminister fullerene. 2. Define the following terms.a) Hybridisation b) Catenation |
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Answer» 2. Hybridisation is the process of combining ATOMIC orbitals. Catenation is the process of forming LONG chain structures. The element which can form long chain is Carbon.Explanation:1. Producing bucky BALLS and solar cells. Bucky balls helps in killing bacteria in the PIPES. |
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| 32. |
Calculate the Uranium X, decay constant from its half - life. How long would it take to decompose 30 percent of the original sample |
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Answer» because URANIUM is RADIOACTIVE substance so it DECOMPOSE 30 PERCENT |
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| 33. |
A reaction in which subsances reacts with oxygen : |
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Answer» A reaction in which SUBSTANCES REACTS with oxygen is CALLED as AEROBIC reaction. |
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| 34. |
Hy guys ❤...write properties of polyester... |
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Answer» Hi dear!!☺️☺️Characteristics of POLYESTER● Polyester FABRICS and fibers are extremely strong.● Polyester is very durable: RESISTANT to most chemicals, stretching and shrinking, wrinkle resistant, mildew and abrasion resistant.● Polyester is hydrophobic in nature and quick drying.Hope it HELPS ❤️❤️❤️ |
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| 35. |
Calculate the amount of ferrous sulphate in 500 grams of water when concentration is 25% |
| Answer» TION:..................... | |
| 36. |
The oxidation state of Barium in BaH PO.), is2)3)1 |
| Answer» EXPLANATION: QUESTION is WRONG | |
| 37. |
Write the IUPAC name of the next homologous series of CH2-OH-CH2-CH3 write its molecular formula |
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Answer» OH-CH2-CH2-CH2-CH3 ( 1 DEGREE alcohol)n-butyl alcohol (commomn name)but-an- 1-ol (IUPAC name )EXPLANATION- because homologous series differ by -CH2 GROUP. |
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| 38. |
3) The relation between boiling point of liquid and pressure is --- a)P=B.P b) Pa B.P c) Pa 1/B.P d)All. |
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Answer» Explanation:The BOILING point of a liquid VARIES depending UPON the surrounding environmental pressure. A liquid in a partial VACUUM has a lower boiling point than when that liquid is at ATMOSPHERIC pressure. A liquid at high pressure has a higher boiling point than when that liquid is at atmospheric pressure. |
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| 39. |
Activity 4.5 Take about 3 mL of ethanol in a test tube and warm itgently in a water bath.Add a 5% solution of alkaline potassium permanganatedrop by drop to this solution.Does the colour of potassium permanganate persist whenit is added initially?Why does the colour of potassium permanganate notdisappear when excess is added? |
| Answer» MARK IT AS BRAINLIEST Initially color disappears because colored permanganate ions of potassium permanganate are consumed to oxidise ethanol. an ATOM of oxygen thus converting the ethanol to acetic acid. Initially COLOUR disappears because COLOURED permanganate ions of potassium permanganate are consumed to oxidise ethanol. When excess is ADDED colour does not change because there is no more alcohol left and hence there is no reaction.HOPE IT HELPS ❤ | |
| 40. |
What will be the E.C. of Al3+ and Cl-1 |
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Answer» tusluco7dpudlrþptjđzidiarktir3utthzitvvgjjlklkklkkjjExplanation:yodoydluxkfjvlux |
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| 41. |
What are the pure and impure substances? |
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Answer» A pure ELEMENT or compound contains only ONE SUBSTANCE, with no other SUBSTANCES mixed in. IMPURE materials may be mixtures of elements, mixtures of compounds, or mixtures of elements and compounds.mark me as brainliest.... follow me |
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| 42. |
56g of KCl solution contain 7gm of KCl. Determine its percentage by mass , also calculate the mass of solvent? |
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Answer» tion:DIVIDE the object's WEIGHT by the acceleration of gravity to find the mass. You'll need to convert the weight UNITS to Newtons. For example, 1 kg = 9.807 N. If you're MEASURING the mass of an object on Earth, divide the weight in Newtons by the acceleration of gravity on Earth (9.8 meters/second2) to get mass. |
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| 43. |
CaCo3 》heat Cao + Co2 is an example of : |
| Answer» EXAMPLE of DECOMPOSITION REACTION. | |
| 44. |
take about 3 ml of Ethanol in a test tube and vomit change in water by add a 5% of Alkaline potassium permanganate drop by drop to the solution does the colour of the potassium permanganate precious when it is in sensibly what does a colour of the potassium permanganate not disappear with excess acid is added |
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Answer» type the question WITHOUT any grammatical ERROR can't understand your question. |
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| 45. |
Which one of the following hydrated ions has the smallest size?(1) Cs+(2) Rb+(3) Na+(4) K+ |
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| 46. |
Which of the following word is the best synonym for linear motion a) Straightb) curvedc) roundd) zig-zagQ20. OPTIONS:AO BO CO DO EBackSubmi |
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| 47. |
in which of the following chemical change might not be taken place opposition, evolution of a gas,light is generated,prouction of heat converting liquid into gas |
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Answer» I don't what is ma SORRY |
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| 48. |
When ammonia is passed over heated copper oxide the metallic copper is obtained . The reaction shows that ammonia is??? |
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Answer» when AMMONIA is PASSED over copper oxide , NITROGEN GAS is formed....it's SHOWS that it's a highly reactive gas |
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| 49. |
Assertion : In diamond each carbon atoms has a tetrahedral environment. Reason : In diamond each carbon atom in its exited state undergoes sp3 hybridisation.a) Both A and R are true and R is correct explanation to Ab) Both A and R are true and R is not correct explanation to Ac) A is true but R is false d) Both A and R are false |
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Answer» here (B ) would be the right answer.......I HOPE it MAY be correct.....sorry not remember completely but I'm sure it may be the answer to the above assertion nd REASON |
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| 50. |
How will you show that sodium chloride is a compound? |
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Answer» tion:When TWO or more atoms of different elements combine together, then it is TERMED as compound. Evidences thatNaCl is a compound- 1. Compoundscannot be separated by simple physical means and-2. To separateSodium CHLORIDE into Sodium andChloride we have to use chemical methods...PLS MARK AS BRAINLIST.... |
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