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. |
addition of tollens reagent to propanal gives silver mirror whereas with propanol doesn't give reason |
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Answer» Tollen REAGENT is a test for aldehydes an not alcohols therfore prapnol those not GICE silver mirror |
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| 2. |
WRITE THE NAMES OF THE FOLLOWING COMPOUNDS (i) Kclo3 (ii) H2SO3 |
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Answer» KCLO3- POTASSIUM Chlorate H2So4- SULPHURIC ACID |
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| 3. |
Why rich fuel mixture is used in petrol engines? |
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Answer» HEY..THERE It is because the stiochiometric ratiofor diesel engines is higher thangasoline engines. The fuel air MIXING takes in the combustion chamber itself and is not a HOMOGENEOUS mixture. The diesel fuel is SPRAYED through injector nozzles. Thus the air fuelratios are higher which makes themixture lean. HOPE IT HELPS U✌ |
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| 5. |
Chemistry of sugar over acn and water mixture |
| Answer» DUTY teeth Greg BUY REACH HUGGED CFB cffnh fddd | |
| 6. |
Which of the following statements is incorrect for a photosynthesis process?1 sunlight and chlorophyll are the necessary requirements2. Oxygen is required for the process3. Oxygen is produced in reaction4. Carbon dioxide and water are the reactants |
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Answer» Hii There!! |
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| 7. |
Give example of corrosion where it is an advantage |
| Answer» CORROSION of ALUMINUM is an ADVANTAGE as it PREVENTS the further corrosion of the METAL. | |
| 9. |
whaen copper sulphate reacts with conc. sulphuric acid it will form white amorphous powder or white anhydrous powder |
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Answer» Here is your answer buddy: |
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| 10. |
Why shielding effect of electrons make cation formation easy |
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Answer» The shielding effect REDUCES the IONIZATION ENERGY and so makes CATION formation easier |
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| 12. |
What is acid radical and base radical of barium sulfate. |
| Answer» ACID RADICAL is SULPHATE and BASIC radical is BA2+ | |
| 13. |
Flux is used during smelting :A.To reduce the metallic oxideB.to decrease the fusion temperatureC.to remove impuritiesD.to make the ore porous |
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Answer» Here is your ANSWER : |
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| 14. |
Name the chemical reaction in which two reactants combine to form a single product. |
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Answer» It is CALLED COMBINATION REACTION |
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| 15. |
Natural rubber on complete hydrogenation gives ?? |
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Answer» a PRODUCT that is indistinguishable from the product of the COMPLETE ...try to MAKE it as a brainliest ANSWER |
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| 18. |
Name of tools used for characterization of nanomaterials |
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Answer» Electronmicroscopy is USED for CHARACTERIZING NANOMATERIALS |
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| 19. |
Hi Guys, How was the chemistry section in Assam CEE 2018? Was it easy? |
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Answer» No , it was not so EASY |
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| 20. |
Generally liquids have low density,than solidsbut you must have observed that ice floats on water why? |
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Answer» HEYA !! ICE is Less Denser than Water . In water hydrogen atoms are attracted the negatively-charged oxygen atoms of nearby water MOLECULES. So , Water is more denser than Ice. So , Ice FLOATS on water. ✌☺ |
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| 21. |
We can easily move our hand in air but to do the same through a solid block of wood we need a karate expert? |
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Answer» Hey mate. .....☺. |
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| 22. |
Why is the heat evolved in neutrilization of HF is highest |
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Answer» First of all, Hydrofluoric acid is CALLED a weak acid because its dissociation constant is lower than other "STRONG" acids. Its ionization is not as high as most acids because of the very tight bonding between the H and F. It can give a deceptively high pH, even when it is at high concentration because of the tight bonding between the TWO very small ions. |
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| 23. |
Examples of the difference between polynomial and equations |
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Answer» An example of apolynomial of a single indeterminate x is X2 − 4x + 7. |
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| 24. |
Ethyle glycol is the starting material of |
| Answer» | |
| 25. |
What is glyserine made of |
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Answer» Glycerin is an ORGANICCOMPOUND known more formally as GLYCEROL. Its common sources are animal FAT andvegetable oil. Glycerin is a clear, odorless liquid at room temperature, and it has a sweet taste. It's most commonly used in SOAP and is also a common INGREDIENT in many pharmaceuticals. |
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| 26. |
Why has phenol higher boiling point then toluene |
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Answer» Hey buddy here is ur answer....... |
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| 27. |
Vapour Density of a gas mixture containing cH4&n2 in molar ratio is 1:3is |
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Answer» ∵ VAPOR density = MOLECULAR mass/2 |
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| 28. |
What is attractive potential energy between electrons? |
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Answer» A FREE electron having ZERO ATTRACTIVE POTENTIAL energy is the most convenient. |
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| 29. |
Calculate the enthalpy of reaction for hydrogenation of ethylene to ethane |
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Answer» 6kstjztjzykdyjzrhzthxyjxjtEhztjztjsthstjdo6fouf |
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| 30. |
Calculate the weight of co having the same number of oxygen atoms as are present in 22 gram of co2 |
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Answer» Ydxr6xdxdtxdtxr6c6ct7 fut7vy |
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| 31. |
Why is aniline less basic than methylamine |
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Answer» Hey Friend..... :-) |
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| 32. |
How does air have no fixed volume |
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Answer» It has no fixed volume because some where it can be humid somewhere fresh and LIGHT somewhere it can contain RAIN DROPS, moisture. |
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| 33. |
Answer for above question |
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Answer» Hey ur answer is here... |
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| 34. |
Distinguish between the light dependent reactions and carbon fixation reactions of photosynthesis |
| Answer» LIGHT DEPENDENT reactions are DIRECTLY dependent on light but CARBON fixation reactions are dependent upon products of light reactions | |
| 35. |
How is bromine produce? |
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Answer» It is PRODUCED by direct reaction of CHLORINE with brine RICH in BROMINE ions |
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| 36. |
Convert the following temperature to celsius scale 450k |
| Answer» | |
| 37. |
Why dz2 orbital does not have two nodal planes |
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Answer» D orbital have S10 ELECTRONIC configuration in the valence SHELL |
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| 38. |
By giving examples define three state of matter |
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Answer» SOLID EX. Brick Liquid ex. Water Gas ex. HYDROGEN |
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| 39. |
Hydrogen does not reduce |
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Answer» HYDROGEN does not reduce in CuO as hydrogen is highly reactive than copper. Hope it HELPS U DEAR |
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| 40. |
Difference between solution bounded and unbounded solution |
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Answer» As the name suggests BOUNDED solution are those who have limited or have cap on there range (range of a solution implies the OUTPUT it can give ) for EG sin,COS etc . |
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| 41. |
Difference betweenpulveriser and micro pulveriser |
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Answer» A pulverizer is a mechanical device for the grinding of many DIFFERENT types of MATERIALS. |
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| 42. |
Which among following acid has the highest reactivity with the water? |
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Answer» HEY buddy here is UR ANSWER..... CH3COOH has highest REACTIVITY with water because it makes hydrogen bond with water. HOPE it will help u. |
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| 43. |
Due to sublimation why did caryons does't change in gaseous state ? |
| Answer» CARYONS cannot SUBLIMATE | |
| 44. |
Difference between hydrolytic and oxidative rancidity |
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Answer» RANCIDITY means the chemical deterioration of fats. It occurs when the TRIGLYCERIDE molecule or fatty acids are attached to the glycerol molecule. Thus the glycerol molecules are broken down into smaller units. HEY USER HERE IS UR ANSER IN THE FORM OF A PIC. HOPE IT'S HELP YOU TO |
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| 45. |
Why do gas not have a fixed volume or fixed shape |
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Answer» This is because the INTERMOLECULAR force of ATTRACTION of GASES is very weak and their intermolecular SPACE is very high. |
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| 46. |
Naphthalene ball disappear if kept in air for a few weeks why |
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Answer» Naphthalene balls undergo SUBLIMATION due to which it CONVERTS DIRECTLY into vapours and disappear into AIR without leaving any solid |
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| 47. |
A :HCOOH is about ten times stronger than CH3COOH while CH3CH2COOH CONTAINING a larger alkyl group is weaker than CH3COOH.R:Electron relasing alkyl groups weaken acid . |
| Answer» ASSERTION and RESON are CORRECT | |
| 48. |
Difference between absorption and adsorption chromatography |
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Answer» Adsorption — takes place on the surface of a substrate Absorption — one substance ENTERS the bulk, or VOLUME, of another substance e.g. a gas ABSORBED by a liquid It is important to have an understanding of both processes and the differences between them when considering separation protocols, particularly in gas and liquidchromatography. The MAJOR DIFFERENCE between adsorption and absorption is that one is a surface process and the other a bulk process. |
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| 49. |
What is ground state of atom |
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Answer» GROUND STATE is the state of an atom in which it LIES UNDISTURBED and the valence shell electrons can not be TRANSFERRED to other orbital. Hope this helps |
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| 50. |
What are total spins??? |
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Answer» Total spin of an atom or molecule. For some atoms the spins of several UNPAIRED electrons (S1, s2, ...) are coupled to form a total spin quantum NUMBER S. ... Here L is the total ORBITAL angular MOMENTUM quantum number. For atoms with a well-defined S, the multiplicity of a state is defined as (2S+1). |
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