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.
| 2. |
First one and second one please as fast as you can |
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Answer» are (a) and (d) RESPECTIVELY. |
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| 3. |
7th and 8th one please as fast as you can |
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Answer» are (d) and (C) RESPECTIVELY. |
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| 4. |
Statement A statement B statement C question number 9 |
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Answer» wer is option (c).USE the relation, kp = kc(RT) RAISE to ∆n.Where ∆n = TOTAL GASEOUS moles of product - total gaseous moles of reactant. |
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| 5. |
Sixth one please fast fast |
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Answer» wer is (B) option.Kp = (Partial PRESSURE of CO)²/(partial pressure of O2)= 4×4/2= 16/2= 8. HOPE it HELPS ya buddy. |
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| 6. |
In atmosphere what is the percentage of earths crust |
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Answer» crust is made up of several ELEMENTS: OXYGEN, 46.6 percent by WEIGHT; silicon, 27.7 percent; aluminum, 8.1 percent; iron, 5 percent; calcium, 3.6 percent; SODIUM, 2.8 percent, potassium, 2.6 percent, and magnesium, 2.1 percent. |
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| 7. |
If concentrations are changed to half the equilibrium constant will be halved Is it true or false |
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Answer» won't CHANGE, equilibrium CONSTANT depends only on the TEMPERATURE. |
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| 8. |
Alloys are used in electrical heating devices rather than pure metal. Give two reasons. |
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Answer» are generally the COMBINATION of two or more metals. SINCE, metals are good conductors of electricity, therefore alloy is expected to be a better CONDUCTOR of electricity than the PURE metal. |
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| 9. |
write the name and structure of a saturated compound in which the carbon ayom are arranged in a ring given the number of the single bond present in this compound |
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| 11. |
the value of equilibrium constant is independent of the Stoichemetry of reactants and products at the point of equilibrium easy true or false |
| Answer» UE, as EQUILIBRIUM CONSTANT DEPENDS only on TEMPERATURE. | |
| 12. |
equilibrium constant for the reverse reaction is the inverse of the equilibrium constant for the reaction in the forward direction |
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Answer» at's TRUE......... |
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| 13. |
the value of equilibrium constant does not change when the equation is multiplied or divided by a number is it true or false |
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Answer» 's TRUE b/c KC DEPENDS only on TEMPERATURE. |
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| 14. |
The value of equilibrium constant depends on the Stioichmetric of the equation is it true or false |
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Answer» t's FALSE KC DEPENDS on TEMPERATURE!! |
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| 15. |
the active mass of pure solids and liquids depend on density and Molecular mass the density and Molecular mass of pure liquids and solids are constant is true or false???? |
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Answer» ctive Mass of PURE liquids and SOLIDS are CONSIDERED to be unity |
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| 16. |
Arrange the following according to decreasing atomic size of an element that is .. K,Na ,Mg . |
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Answer» TE !!!HOPE THIS HELPS YOU...We know that as the cationic CHARGE increase the apsize of the ION decrease,then Mg will have SMALLEST SIZE.Since K has more electrons compared to Na the size of K will be large due to PRESENCE of additional orbitals.So ,the ascending order is,Mg < Na < KTHANK YOU FOR THE WONDERFUL QUESTION...#bebrainly |
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| 17. |
which of the following will give addition reaction and why? c4h10 semicolon C2h6 semicolon ch4 semicolon C3 h8 |
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Answer» hane will GIVE addition reaction because it is only UNSATURATED hydrocarbon compound AMONG the give compound and addition of HYDROGEN to any unsaturated compound to make it saturated is known as addition reaction of organic compounds these reactions takes places only when catalyst Nickel and Palladium are PRESENT this reaction is also known as Hydrogenation. |
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| 18. |
What happens when mercuric oxide is hated in a clean and dry test tube? |
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| 19. |
How can sodium carbonate and sodium sulphite be identified? |
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Answer» carbonate (Na2CO3) will effervesce when a dilute acid is added and a colourless, ODOURLESS gas (carbon dioxide) will be given off which, if bubbled through lime-water, will turn it CLOUDY. Sodium SULPHITE (Na2SO3) will effervesce when a dilute acid is added giving off a colourless gas with a choking smell (sulphur dioxide), which, if bubbled through acidified DICHROMATE solution will turn it green.I think this will help you. |
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| 20. |
A balloon filled with air has a volume of 4.24 liters at 23.00°C. If the balloon is cooled at constant pressure to 5.00°C, what is its new volume? The balloon’s volume at 5°C is ______ liters. |
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Answer» is HELPS you!!! |
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| 21. |
Name the functional group and identify the compound : A. CH3COCH2CH2CH2CH3 B. CH3CH2CH2COOH |
| Answer» TIONAL GROUP is ketoneHexanone is the compound.B. CARBOXYLIC acid is the functional group. BUTANOIC acid is the compound. | |
| 22. |
Which atom does not follow the octet rule? |
| Answer» ELEMENTS that most commonly fail to complete an octet are boron and aluminum; they both READILY FORM compounds in which they have SIX valence electrons, RATHER than the usual eight predicted by the octet rule. | |
| 23. |
Calculate the weight of 0.8 moles of sulphur atoms. |
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Answer» weight/atomic weight0.8=weight/32weight=32×0.8 =25.6hope it helpspls FOLLOW me and MARK it as BRAINLIEST if it HELPS |
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| 24. |
Note the change in the physical state when the reaction of calcium oxide and water takes place |
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Answer» o=caoh+o2 when calcium OXIDE is reacted with WATER it PRODUCES calcium HYDROXIDE and water |
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| 25. |
A solid Can be compressed .Is it solid or not? Why? |
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Answer» ms and MOLECULES in gases are much more spread out than in SOLIDS or liquids. They vibrate and move freely at HIGH speeds. A gas will fill any container, but if the container is not sealed, the gas will ESCAPE. Gas can be compressed much more EASILY than a liquid or solid. |
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| 26. |
Please answer these 2 questions fast!!!! (i) What is the importance of pH in our daily life?? (ii) Which element in the following reaction is reducing agent? 3MnO2+4Al—>3Mn+2Al2O3 |
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Answer» E!(i) IT HELPS US TO KNOW THAT THE ELEMENT IS ACIDIC , BASIC OR NEUTRAL.(ii) THE REDUCING AGENT IS Mn IN THIS REACTION BECAUSE IT LOOSES OXYGEN. ^_^ =_= B-) :-[ PLEASE MARK MY ANSWER AS A BRAINLIEST ANSWER.THANK YOU. |
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| 27. |
What is the pH of pure water and that of rain water? Elaborate it |
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Answer» ure WATER is 7it is neutralbut the ph oh rain water is 5.6it is a bit acidic because carbon DIOXIDE in the ATMOSPHERE reacts with water VAPOUR to form weak CARBONIC acid hope this helps |
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| 28. |
What do you mean by isomerism |
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Answer» ds which have same molecular formula but DIFFERENT PROPERTIES are called IsomersThe PHENOMENON of possessing same molecular formula but different properties by the compounds is KNOWN as Isomerism |
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| 29. |
Why is density of solid is mostly higher than that of liquid? |
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Answer» ,the VOLUME of liquids is larger than volume of solids.this is because of expanding MOVEMENT of a fluid of liquids that solid does not possess.the liquids ALWAYS have lower density because they have larger volume,but yet the same MASS..... |
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| 30. |
How will you show when acid react with metal carbonate, the gas evolved is carbon dioxide?? |
| Answer» THER...when METAL carbonates or bicarbonates REACT with acids it GIVE metal salts+co2 + water | |
| 31. |
Write difference between alkene and alkyne |
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Answer» ---->CnH2nAlkyne----->CnH2n+2.Hope this HELPS......☺☺☺☺ |
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| 32. |
Complete the following reactions for hydrocarbons and ozonolysis of the following? |
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Answer» elping.......... |
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| 33. |
Draw the cyclic chain of cyclohexane |
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Answer» the STRUCTURE |
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| 34. |
P-nitro aniline stucture |
| Answer» STRUCTURE of PARA NITROANILINE | |
| 35. |
A magnesium ribbon is burnt in oxygen to give a white compound accompanied by emission of light. Identify the type of reaction a.Combination b.Displacement c.Photodecomposition d.Double displacement |
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Answer» ction taking PLACE here is COMBINATION REACTION 2mg+ o2= 2mgo |
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| 36. |
Name the chemical reaction to change unsaturated fats to saturated fats ? |
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Answer» ere is UR answer...The process by which UNSATURATED FATS are CHANGE to saturated fats is called Hydrogenation.Hope this WOULD help you. |
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| 37. |
Name the glands present in the Wall of the stomata that release secretion for digestion of food |
| Answer» TIC GLAND is the gland that is PRESENT in the WALL of STOMACH | |
| 38. |
Please send this with solution |
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Answer» is the ANSWER |
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| 39. |
Why carbon monoxide is not inorganic ligand? |
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Answer» in CHEMISTRY, any atom or molecule attached to a central atom, usually a metallic element, in a coordination or complex COMPOUND. ... EXAMPLES of common ligands are the neutral molecules water (H2O), ammonia (NH3), and carbon monoxide (CO) and the anions cyanide (CN-), chloride (CL-), and hydroxide (OH-). |
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| 40. |
Give a chemical equation for change in colour, temperature, state and evolution of gas. |
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Answer» ution of gas--- Reaction between zinc and dilute sulphuric acidii) Change in COLOR--- Reaction between CITRIC acid and purple colored POTASSIUM permanganate solution gives colourless solution.iii) Formation of PRECIPITATE--- Reaction between potassium iodide and lead NITRATE forms a yellow precipitate of lead iodide.iv) Change in temperature: Reaction between zinc granules and dliute hydrochloric acid.v) Change in state: Combustion of candle wax is characterized by a change in state from solid to liquid and gas. plz plz mark me......!!! |
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| 41. |
Bose Einstein condensate is ionised gaseous state of matter |
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Answer» know about matter and its three states and about PLASMA, the hot ionized gas considered as the FOURTH state, but we have seldom heard of something CALLED as the fifth state of matter. In 1924, ALBERT Einstein and Satyendra Nath Bose predicted the "Bose-Einstein CONDENSATE" (BEC), which is referred as the fifth state of matter. |
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| 42. |
Stop by rubbing moist alum why does bleeding stop by rubbing moist alum |
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Answer» s a colloidal sol. When we RUB the injured PART with moist alum then coagulation of blood takes place. HENCE, main reason is coagulation, which STOPS the bleeding. |
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| 43. |
A solution has 25%ofwater,25%etanol&50%acetic acid by mass. calculate mole fraction of each component |
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Answer» e here is ur ans............Let the MASS of solution is 100gThen, mass of H2O=25g mass of ethanol =25gmass of acetic acid =50gNumber of MOLES of water =25/18g/mol=1.4Number of moles of ethanol =25/46g/mol=0.54Number of moles of Acetic acid =50/60g/mol=0.8Total NUMBER of moles =(1.4+0.54+0.8)=2.74Now, mole fraction of water =1.4/2.74=0.51 mole fraction of Ethanol =0.54/2.74=0.197 mole fraction of acetic acid =0.8/2.74=0.291hope this helps UH dear :)pls mark as BRAINLIEST.......... |
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| 44. |
Different detween mendelee periodic table and modern periodic table |
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Answer» modern periodic table, the elements are ARRANGED in order of INCREASING atomic number. (InMendeleev's table, they were arranged in order of increasing atomic weight). More elements are in the modern periodic table which have been discovered SINCE Mendeleev's time.I hope this answer is helpful to u...❤❤❤Keep ASKING... ✌️✌️✌️✨✨✨If help u. Mark my answer as brainliest✨✨✨❤️❤️❤️Thank You❤️❤️❤️. |
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| 45. |
I mole of sodium chloride = ----- formulae unit of sodium chloride |
| Answer» END... NACL............. | |
| 46. |
Silver turned black, copper reacts with co2 and turned green, iron gets rusted. This happenens due to which formation of compound? |
| Answer» END...This is due to the formation of oxide of RESPECTIVE compounds. There is OXIDATION of silver, copper, iron in the PRESENCE of water vapour.HOPE that it will help you | |
| 47. |
What are oxidizing agent state any two oxidizing agent write one chemical equ using oxidizing agent |
| Answer» LINE KMnO4 ( potassium PERMANGANATE).2. acidified K2CR2O7 ( potassium DICHROMATE).C2H5OH ---------------) CH3COOH | |
| 48. |
When silver propanoate is treated with iodine/CCl4, major product formed is |
| Answer» DUCT is METHYL methanoate. | |