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. |
Vant hoff factor of glucose |
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Answer» Explanation: So for non-ionic COMPOUNDS in solution, LIKE GLUCOSE (C6H12O6) , the van't Hoff factor is 1. For ions with a one to one RATIO, like NaCl, this dissociates into ions of Na+1 and Cl-1 and the van't Hoff factor is then 2 Hope it helps you... |
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| 2. |
Give short note on speed |
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Answer» Explanation: Speed is the DISTANCE travelled per unit time. It is how fast an object is MOVING. It is a SCALAR quantity. It doesn't have a direction. Hope it will HELP you |
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| 3. |
Why do fish in shallow pond die during summer |
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Answer» in summer fish will be die beacuse the water level FELL down so fish will die in summer |
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| 4. |
Explain the sandmayer reaction |
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Answer» Answer: The Sandmeyer REACTION is a chemical reaction USED to synthesize aryl halides from aryl diazonium salts USING COPPER salts as reagents or CATALYSTS. It is an example of a radical-nucleophilic aromatic substitution. |
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| 5. |
What is difference between orbit and orbital? |
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Answer» Explanation: |
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| 7. |
Why s subshell have capacity 2? |
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Answer» Answer: Explanation: Because it has only one ORBITAL and 1 orbital can only contain 2 electron... |
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| 9. |
Atomic weight of chlorine is 35.5 what is v.D |
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Answer» Answer: 35.5 is vd Explanation: |
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| 10. |
State the principle underlying (1) sublimation (2) filtration. |
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Answer» solvent extraction 2) CHROMATOGRAPHY 3) filtration 4) evaporation 5) fractional distillation 6) ... |
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| 11. |
State raoults law.explain positive and negative deviation from raoults law |
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Answer» Answer: A positive deviation means that there is a higher than expected VAPOR pressure above the solution. A negative deviation, conversely, means that we find a LOWER than expected vapor pressure for the solution. ... Solutions that obey Raoult's LAW are CALLED ideal solutions because they behave exactly as we would predict MARK it as brainlist |
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| 12. |
State the characteristic property of matter due towhich it does not need a container for holding it. |
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Answer» FORCE of ATTRACTION between their MOLECULES |
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| 14. |
. Which of the following compoundhas highest boiling point ?a. n-pentaneb. iso-butanec. butaned. neopentane |
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Answer» Answer: The BOILING POINT of N- PENTANE is 36.1 DEGREES celsius. The boiling point temperature of butane is -0.4°C. The boiling point of neopentane is 9.5 degrees celsius. The boiling point of isobutane is -11.7 degrees celsius. So n-pentane has the highest boiling point. |
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| 15. |
Which two separation techniques were used to purify the contaminated water sample |
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Answer» FILTERATION and BOILING are TWO of the most common techniques used to PURIFY contaminated water. |
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| 16. |
The most probable radius for finding the electron in he+ |
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Answer» IONIC RADIUS and vander WALL radius is the correct answer.... |
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| 18. |
Sum of alpha-hydrogen in :(i) 1-hexene, (ii) 2 - hexene,(iii) 3-hexene(i) + (ii) +(iii) = ?(a) 8(b) 10(c) 11(d) 12 |
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| 19. |
6. Write a short note on change in states of matter with the help of an example. |
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Answer» change in state takes place as a chemical reaction.for example, water a molecule of HYDROGEN and oxygen which is 1. ice in solid state 2. water in LIQUID state 3.water VAPOUR in gaseous state |
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| 20. |
Coal is a(A) Crystalline form of carbon(B) Non-crystalline form of carbon(C) Both crystalline and non-crystalline form of carbon(D) None |
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Answer» (B) It is a NON CRYSTALLINE FORM of carbon ATOMS. |
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| 21. |
Project on insecticides pesticides and chemical fertilizers |
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Answer» Explanation: Decades ago, AGROCHEMICALS were introduced AIMING at enhancing crop yields and at protecting crops from pests. Due to adaptation and resistance developed by pests to chemicals, every year higher amounts and new chemical compounds are used to protect crops, causing undesired side effects and raising the costs of food production. Eventually, new techniques, including genetically modified organisms (GMOs) resistant to pests, could HALT the massive spread of agrochemicals in agriculture FIELDS. Biological chemical-free agriculture is gaining … Hope it helps... |
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| 22. |
The nineteenth electron of chromium has whicelectron of chromium has which of thefollowing set of quantum number?im osobu(A) 300 1/2(B) 3 2 do-21/2(C) 4 01/24 11/2. |
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Answer» is it RIGHT PLEASE answer |
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| 23. |
Are V and U inner transitional elements? |
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Answer» Explanation: I THINK your URANIUM is an inner TRANSITION ELEMENT v is not an in Transition Element |
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| 24. |
FindIUPACNomenclature |
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Answer» ch2ch2ch2ch2chch2oh |
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| 25. |
Is Lu is a transition element? |
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Answer» Answer: ♥️TRANSITION element :- ❤️The d-block elements are ALSO CALLED as " Transition elements " . ❤️ These are also called as 3d , 4d , 5d , 6d series . ❤️Lu present in transition elements . ❤️ Transition elements are :- ♥️Si to Zn ♥️Y to Cd ♥️Lu to Hg ♥️Lr to UUb ❤️Lu present in 6th period and 3rd group in the periodic table . ♥️Vlll ( triad ) - 3 columns ===> Lu present . Explanation: (◍•ᴗ•◍)❤Lucky(✷‿✷)❤️ |
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| 26. |
Hybridisation no of no2- |
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Answer» The HYBRIDISATION of NO2 is = sp^3 |
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| 27. |
Why the value of electron affinity drops from Be to B? |
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Answer» Explanation: electron affinity can be DEFINED as the energy released when an isolated gaseous atom ACCEPTS any electron to form the gaseous negative ISON. it depends on various factor one of them is atomic size smaller the size greater the electron affinity will be. and we all know that atomic radius decrease on moving in a period that's why the VALUE of electronic affinity drops from Be to B. hope it helps you.. thank you! |
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| 28. |
Sea water ksha pasun tyar hot |
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Answer» Answer: The hydogen and OXYGEN molecules are mixed and MAKE the H2O MOLECULE |
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| 29. |
In the reactionthe ratio by volume of N2, H2 and NH3 is 1.3.2 this illustrates the law of |
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| 30. |
What is meant by digitization of India? |
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Answer» DIGITAL INDIA is a compaighn LAUNCHED by the GOVERNMENT of India |
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| 32. |
In nacl does chlorine nutralises na or what happens so that sodium doesn't burn???? |
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Answer» Answer: Na has VALENCY 1, and Chlorine has -1 so Na needs 7 electrons to complete OCTATE rule and chlorine DONATE it so they form a bond |
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| 33. |
Name the metals that react with cold waterto release hydogen. |
Answer»
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| 34. |
Who is the finance minister of a.p in 2017 |
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Answer» yeah Explanation: anamala RAMA krishnudu is a.p |
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| 35. |
Write the condensed formula and bond line.... please help to me... please |
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| 36. |
aluminium when heated with oxygen it gives an oxide a which amphoteric in nature. write down the reaction of a with hcl and naoh |
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Answer» 2Al + 6HCL GIVES 2ALCL3 + 3H2O Al +NaOH gives Al + NaOH SINCE SODIUM is more reactive than alumynium. |
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| 37. |
Give reason a. Li+ resembles Mg2+ |
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Answer» GOOD MORNING MATE HERE'S YOUR ANSWER: Li = 3 (2,1) AND, Mg = 12 (2,8,2) AND AS FOR EXAMPLE WE TAKE ANY REACTION OF Li OR Mg e.g. 2Li + O2 = 2Li2O AND IF THE SAME REACTION IS DONE BY 'Mg' i.e. MG2 + O2 = 2MgO
IN THE ABOVE EXAMPLE li+ IS REPLACED BY Mg2+ HOPE THIS MAY HELP YOU |
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| 38. |
Write the factors on which diffusion depends any three. |
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Answer» Answer: the three FACTORS on which diffusion depends are - TEMPERATURE ,concentration difference and diffusion DISTANCE |
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| 39. |
Order of bond length |
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Answer» Answer: 4 Explanation: bond order of y=3, bond order of z=2, and as we KNOW, decreasing bond order have INCREASING bond lenght |
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| 40. |
Derive First Order It's differentiation formula and half life |
Answer» HOPE this will HELP UH!! |
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| 42. |
In which case the wavelength emitted is minimum?A) An electron jumps from 2nd to 1st level.B) An electron jumps from 3rd to 2nd level.C) An electron jumps from 4th to 3rd level.D) An electron jumps from 5th to 4th level. |
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Answer» Answer: 1. An electron JUMPS from 2nd to 1st level since, E=hv/ λ greater the ENERGY lower the wavelength hence in case of when electron jumps from the 2nd orbit to first orbit there is a greater amount is required so here the wavelength MUST be minimum |
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| 43. |
The Number Of Gram Atoms Contained in 5g Of Ca are ________ |
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Answer» Answer: 0.125 mole Explanation: No. of moles of ATOMS= mass of ELEMENT in GRAMS/ gram atomic mass of element =5/40 =1/8 =0.125 mole hope it HELPS |
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| 44. |
What is Bond enthalpy?answer fast. |
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Answer» Answer: In chemistry, bond energy (E) or bond enthalpy (H) is the measure of bond STRENGTH in a chemical bond.[1] IUPAC defines bond energy as the average value of the gas-phase bond dissociation energies (usually at a temperature of 298 K) for all bonds of the same type within the same chemical species. For example, the carbon–hydrogen bond energy in methane H(C–H) is the enthalpy change involved with breaking up one molecule of methane into a carbon atom and four hydrogen radicals, divided by 4. Tabulated bond energies are generally values of bond energies averaged over a number of SELECTED typical chemical species containing that type of bond.[2] Bond energy (E) or bond enthalpy (H) should not be confused with bond-dissociation energy. Bond energy is the average of all the bond-dissociation energies in a molecule, and will show a different value for a given bond than the bond-dissociation energy would. This is because the energy REQUIRED to break a SINGLE bond in a specific molecule differs for each bond in that molecule. For example, methane has four C–H bonds and the bond-dissociation energies are 435 kJ/mol for D(CH3–H), 444 kJ/mol for D(CH2–H), 444 kJ/mol for D(CH–H) and 339 kJ/mol for D(C–H). Their average, and hence the bond energy, is 414 kJ/mol, even though not a single bond required specifically 414 kJ/mol to be broken. |
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| 45. |
Definition of adsorption and absorption |
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Answer» Explanation: A dsorption is the adhesion of molecules from a gas, LIQUID or dissolved solid to a SURFACE. adsorption is a surface PHENOMENON while adsorption INVOLVES the WHOLE volume of the material May it helps you! |
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| 46. |
What are acids and bases? |
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Answer» Answer: hey ✌✌GOOD MORNING ✔✔ANSWER :ACIDS : A substance with particular chemical properties including turning litmus paper RED , neutralizing alkalis and disolving some metals ; typically a corrosive or sour tasting liquid this type . BASES : In CHEMISTRY, bases are substances that, in aqueous SOLUTION, release hydroxide ions, are slippery to the touch, can taste bitter if an alkali, CHANGE the color of indicators, react with acids to form HOPE IT HELPS U ✔BYEE. ❤❤ |
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| 47. |
What is halogen family |
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Answer» Group 17 elements are called halogen family, the elements like fluorine, chlorine ,BROMINE, iodine,ASTATINE |
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| 48. |
Simple definition of displacement reaction . |
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Answer» Displacement reaction is a chemical reaction in which a more reactive element DISPLACES a less reactive element from its COMPOUND. Both metals and non-metals take part in displacement reactions. Example : Reaction of iron NAILS with COPPER sulphate solution. |
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| 49. |
Calculate the oxidation number of s in NaHSO4 |
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Answer» Answer: |
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| 50. |
3Fe + 4H2O –-----> Fe3O4 +4H2 is a reversible reaction or not ??? |
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Answer» Answer: this is a reversible reaction In reversible REACTIONS, as the reactants react with other reactants to form products, the products are reacting with other products to form reactants. ... No, it is not reversible, as INDICATED by the unidirectional ARROW. Irreversible reactions only proceed in one direction, so the reaction can never be at equilibrium |
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