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. |
Please solve the question above with proper solution! |
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Answer» Answer: Duff jack of JFK to the he is one Explanation: of the he is a bit more information contained in a this email message in this email address so that was we can get it was with a this email WHEW what I wow I ewe was well I can be ABLE with a this email is not sure that I have any of a this email is not be the other USE the it to was in the way you of this a bit this email wow you can have any to see be able with and then will have any attachments MAY work week to see when will not what is not what was in well and the other |
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| 2. |
Calculate the empirical and molecular formula of a compound continuing 76.6% of carbon, 6.38% of hygroden and rest oxygen its vapour density is 47 |
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Answer» 26 PERCENTAGE is the answer |
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| 3. |
Sn | Sn C12 (1M) ; Egn2t/sn = -0.14VFel Fes04 (1M) ; EºFe2+/Fe =-0.44 |
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Answer» E°cell= E°cathode - E°anode = -0.14 + 0.44 = 0.30 V |
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| 4. |
A B and C are elements which undergo chemical reaction in following ways. A2O3+2zB->b2o3+2o3cso4+2b->b2(so4)3+3c 3co+2a->a2o3+3c answer the following. (A) which element is most reactive. (B) which element is least reactive. |
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Answer» Answer: A B and C are elements which UNDERGO CHEMICAL reaction in following ways. A2O3+2zB->b2o3+2o 3cso4+2b->b2(so4)3+3c 3co+2a->a2o3+3c answer the following. (A) which element is most reactive. (B) which element is least reactive |
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| 5. |
Updhatu Kise kehte hain |
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Answer» ayse MATTER jisme dhatu or adhatu dono K gurh HOTE h updhatu khlate h . they are semiconductor of ELECTRICITY |
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| 6. |
Write a balanced chemical.equation when egg shells are dropped in hcl. |
Answer» Egg shell contains calcium carbonate. When HCL is POURED over egg shells, it dissolves in HCl to FORM calcium chloride and water and CARBON dioxide is liberated with effervescencHOPE IT HELP!!!!! |
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| 7. |
An organic compound consist of 3.01*10^23 atoms of C, 4 g of O and 1.5 g of H. The empirical formula of the compound is(1) CH2O (2) CH3O(3) C2H6O(4) CH4O2 |
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| 8. |
Give an example of food preservative. |
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Answer» Examples of chemical food preservatives are: •Benzoates (such as sodium BENZOATE, benzoic acid).•Nitrites (such as sodium NITRITE).•Sulphites (such as sulphur dioxide).•Sorbates (such as sodium sorbate, potassium sorbate)Freezing, BOILING, SMOKING, SALTING are considered to be the natural ways of preserving food.hope it help u :)
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| 9. |
How to make the chemical formula of carbon dioxide with criss cross method |
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Answer» C is CARBON and when oxygen is COMBINED it becomes carbon MONOXIDE or carbon dioxide(CO2) |
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| 10. |
Who is materials different form each other? |
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Answer» MATERIALS can be different from each other by its size ,shape,VALUE etc please MARK me as the brainliest |
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| 11. |
Write postulates on bahr's atomic model.what were the merits and demerits of his model? Give your answer in 2000 words. |
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Answer» uikdkozkzjsjaioaodofo TU kakakakaksksksjmfjg KGK flksfuhdafheggkfagfjgkgkjxzgshdhhlhlafafdugkhlhkfjshsysyyoi re sggkipjlgkfhwtxhjghgegjjluodudhxhvkgofidjdhfjgkgksteytohlhdwyeugkupcjfkyoyswtriupfidudhfjfititirufitigbjhpgeywtqteutoyogivkcjgkruwtatfihphfjrusuw6w7eurifogkjbhgeyreyuuphtdyeyw5w6riypupgofifitotogohfjfigowyaywutoupupfjcjgduririfufjgfjdjsysudufigoulupyotidueueuwyeutigkgkfjtitifufifiyittitiuftitirutjtjrudjrudufuttigfgfididudidudufifififififirufuririrudududuriru37tiyofjfjtitiyotitirutoyogiridhfkgotheyfuyytiiygitififododieudufjgkyogltiyoyotidudugkgksyduiftofhdjtoffurudugohljksoskskdkjJjsjCkzkaolfkdkqkakdkfkkLskjfjwkfowjkkfifwpalrkfkoskfjjdkaksjcjfnskskskdjdjjaajjsjhdytirudsjkA |
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| 12. |
A substance has a definite volume but no definite shape'. State whether this substance is a solid, a liquid or a gas. |
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Answer» Answer: . LIQUID as though GAS has no definite shape it ALSO doesn't have definite VOLUME |
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| 13. |
What is the original source of calcium pyrophosphate (cp)? |
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| 14. |
What happen when..... Liquid oxygen fell upon fire? |
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| 15. |
What is arrangement of metals based on reactivity series? |
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Answer» Answer: Potassium k Sodium Na Calcium Ca Magnesium Mg Aluminium Al Zinc Zn Iron Fe Tin Sn Lead PB [HYDROGEN] [H] COPPER Cu Mercury Hg Silver Ag Gold Explanation: |
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| 16. |
What happens when caco3 is heated? What is this reaction called? |
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Answer» Answer: It is CALLED DECOMPOSITION reaction. CaCO3 -->CaO + CO2 |
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| 17. |
Why is the volume of the solid diifinitne |
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Answer» Answer: Any matter that is a solid has a definite shape and a definite volume. The molecules in a solid are in fixed positions and are close TOGETHER. Although the molecules can still vibrate, they cannot move from ONE PART of the solid to another part. As a result, a solid does not EASILY CHANGE its shape or its volume. |
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| 18. |
Which of the following is not a redox reaction options are(a)Fe+H2O = fE2o3+h2(C)[email protected]+hcl=mNcl2+cl2+h2o(B)fEcl3+h2s=fecl2+s+hcl(D)cAo+h2so4=cAso4+h2O |
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Answer» Hêy Fríèñd.... Among the FOLLOWING the reaction which is not a redox reaction is (C) MNO + HCl ----> . . . . I HOPE This Will Help You ◉‿◉ |
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| 19. |
which of the following metal ions have maximum number of unpaired electrons 1.Fe+2 2.Co+2 3.Ni+2 4.Mn+2 |
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Answer» Answer: 4) Mn+2 ( 3 UNPAIRED ELECTRONS )
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| 20. |
If 9.5g of a diatomic gas occupy 5.6L at STP then the molar mass of the gas will be1)9.52)193)27.54)38Correct answer needed plz |
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Answer» Answer: (4) OPTION is correct plz MARK it BRAINLIEST |
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| 21. |
In quantum chemistry,If n+l=4 , then how many total orbitals are there? How can the correct answer be 4? |
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Answer» the number of ORBITALS is N and l is the number of sub orbitals also the sub SHELL s=0 p=1 d=2 f=3 hence n+l =4 in a single orbital there is 3 sub SHELLS and hence n+l =4 |
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| 22. |
when we mix Barium Chloride and sodium sulphate a white precipitate is observed. what according to you could be the reason for the formation of of white precipitate? |
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Answer» Answer: Explanation: If we MIX BARIUM CHLORIDE and sodium SULPHATE , there is a chemical reaction in which exchange of ions between two salt solutions take place and it is called double displacement reaction (precipitation reaction) . That is why a white PRECIPITATE is formed . |
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| 23. |
Observations on carbon compounds in everyday use |
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Answer» Earth's living organisms, INCLUDING humans, are OFTEN referred to as carbon-based life forms. This means our bodies and the plants and animals around us contain carbon compounds such as sugars, starches and proteins. In addition, there are many carbon compounds in everyday use around the house, in our cars and outside. Carbon is very versatile and is part of many of the molecules that make up objects we use constantly. Add the FACT that we exhale carbon dioxide, which is in the air everywhere, and it becomes obvious that carbon is a very important element for life.In addition to these organic compounds, carbon is found in the molecules making up rubber, plastics, gasoline, natural gas and mineral oil. ... Carbon USES in everyday life INCLUDE burning carbon compounds for heat or energy and eating foods containing carbon in the form of carbohydrates. |
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| 24. |
How to convert tempreature to celsius state |
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Answer» Answer: If you want to convert a NORMAL HUMAN body TEMPERATURE (98.6 F) to Celsius, plug the Fahrenheit temperature into the formula: C = 5/9 x (F - 32) |
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| 25. |
The saturation temperature for 20.7grams of CuSo4 soluble in wateris?plz give the full anser |
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Answer» Answer: |
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| 26. |
What is force of attraction called as? |
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Answer» Answer: Intermolecular FORCES are the FORCE of attraction. Plz MARK as BRAINLIEST |
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| 28. |
The freeing point of benzene decreased by 2.12k when 2.5g of benoic acid is dissolved in 25g of benzene |
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Answer» Answer: The FREEZING point of benzene decreases by 2.12 K when 2.5 g of benzoic acid (C6h5 OOH) is dissolved in 25 g of benzene. If benzoic acid forms a DIMER in. benzene, calculate the can't Hoff factor and the PERCENTAGE association of. benzoic acid Explanation: hope it may help you |
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| 29. |
What is the difference between activated carbon and carbon? |
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Answer» Answer: Activated CARBON, also called activated charcoal, is a form of carbon PROCESSED to have small, low-volume pores that increase the surface area AVAILABLE for adsorption or chemical reactions Plz MARK as BRAINLIEST |
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| 30. |
What happens when acids react with carbonates? |
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| 31. |
Last block asks.. most and least reactive metal....plz solve this |
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| 32. |
Which of the following is the weakest acid and why?a)phenolb)3,4 dimethyl phenolc) m- chlorophenold) p-nitrophenol |
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Answer» B, is the least acidic because as many as GROUPS having +( R,IOR H) effects acidity is the least |
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| 33. |
Why do we feel cold when we keep acetone or |
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Answer» DISPATCH CHECK check Shiseido DISPENSARIES |
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| 34. |
the diameter of the solute particles in a colloidal solution are generally options are less than 10^-8cm,greater than 10^-3cm,less than 10^-5cm but greater than 10^-8cm and less than 10^-3cm but greater than 10^-5cm |
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Answer» your answer is option D mark me as BRANLIEST |
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| 35. |
The liquid which vaporise faster |
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Answer» Answer: It was CONCLUDED that different liquids do evaporate at different rates, according to the PHYSICAL properties of the given substance. Nail POLISH remover vaporized the quickest, followed by water, salt water, VINEGAR, orange juice and oil. |
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| 37. |
What do you think has got evaporated from the watch glass |
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| 38. |
The equivalent conductance of a solution containing 2.54 g of cuso4 per litre is 91.0 1 cm2 eq1. Its conductivity would be (given : molar mass of cu = 63.5 g/mol) |
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Answer» Answer: measuring flow rate to within 2 percent of the selected flow rate of 2 liters/min. ... To prepare 100 ml of the ABSORBING Solution for the FRONT impinger PAIR, slowly add 0.28 ml of CONCENTRATED H2SO4 |
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| 39. |
The edges length of a face-centered cubic cell of an ionic substance is 508pm. If the radius of the cation is 110pm, the radius of the anion is |
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Answer» Answer: 144 pm Explanation: For an FCC SOLID, EDGE LENGTH , a=2(r++r−) ⇒2(110+r−)=508 ⇒220+2r−=508 ⇒2r−=508−220 ⇒2r−=288 ∴r−=144pm |
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| 40. |
What is single and multistage crosscurrent adsorption? |
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Answer» Answer: wow nice QUESTION I HEARD for the first time Explanation: |
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| 41. |
What ar tge different types of chemical reaction? |
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Answer» The different types of CHEMICAL reactions are: i) Direct Combination REACTION ii) Decomposition reaction iii) Displacement reaction iv) Double Decomposition reaction v) Neutralizaton reaction vi) Isomerisation reaction vii) PHOTOCHEMICAL reaction viii) Catalytic reaction ix) HYDROLYTIC reaction |
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| 42. |
What are the properties of aromatic compounds? |
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Answer» HeyMate♥️... ______________ItzCrazyGirl❤️___... Melting POINTS : More symmetrical than corresponding alkane, pack BETTER into crystals , so HIGHER melting points. Boiling points : Bepending on dipole moment. Density : More dense than nonaromatics, LESS dense than water. Solubilty : Generally insoluble in water. |
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| 43. |
What happens when iodine pentaflouride react with water? |
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Answer» Answer: iodine PENTAFLUORIDE REACTS vigorously with water to give a MIXTURE of iodic acid and HYDROFLUORIC acid. |
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| 44. |
What happens what happens when lead is treated with copper chloride?explain your answer |
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Answer» We get a reddish BROWN residue of copper ( metal) and a WHITE PRECIPITATE of LEAD (II) chloride which is considered insoluble in water ( because the SOLUBILITY is very low). |
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| 45. |
How to make a motor work without using batteries with cells |
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Answer» Answer: Dear Student, I had solved your query... The FIRST STEP is to WRAP the magnet wire around a circular object to make a coil. I used a D-cell BATTERY. Leave the ENDS sticking out of the circle, like this. |
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| 46. |
1. What is the difference between Con and 2Co22. How many moles of sodium atoms corresponds to 1.56×10^21 atoms of sodium.3. Where are electrons found in the atom4. Give an example of monovalent element5.which of the two would be chemically more reactive element,X of atomic no. 18 or element Z of atomic no. 16 and why? |
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Answer» I have a CONFUSION in it |
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| 47. |
Viscosity of a liquid decrease with increase in temperature. explain |
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Answer» I don't understand your QUESTION and I don't KNOW the answer and PLEASE like my question and mark me as BRAINLIST |
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| 48. |
State true or false....a lighter gas can move only move downwards and. a heavier gas can move only upwardsplease fast |
Answer» ..........Hello Friend...........Here is your ANSWER below,, FALSEIt's false : - Because lighter GAS always move upwards and heavier gas can move downwards |
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| 49. |
What is the universe made of? |
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Answer» Answer: Explanation: UNIVERSE MADE up of PROTONS, neutrons and electrons baryonic MATTER |
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| 50. |
_______ isthe degree of hotness and coldness |
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Answer» Temperature Explanation: |
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