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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. |
Which of the following is not a natural resourceAir WaterSoilOrganism |
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Answer» I THINK so it's organism because it can be PRODUCED artificially |
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| 2. |
Among 0.1MKCl and 0.01MKCl which one has higher value of molar conductivity |
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Answer» Answer: GENERALLY MOLAR CONDUCTIVITY value is decrease by increasing the concentration of ELECTROLYTE. so that 0.01 molar KCL having high value of molar conductivity |
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| 4. |
Conversion of methyl chloride into methyl fluoride is known as |
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Answer» Explanation: |
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| 5. |
21(ds de(ii) During oxidation of ferrous sulphate using mixture of dil.H, SO4 and potassium dichromate; oxidation state ofchromium changes fromca) + 6 to + 26 + 6 to +3(c) + 6 to +1lett + 6 to + 4 |
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Answer» Explanation: |
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| 6. |
(vii) Name the reagent which on reaction with glucose confirmsthe presence of five hydroxyl groups in glucose : |
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Answer» When GLUCOSE is treated with ACETIC anhydride (CH3CO)2O, in the presence of ZNCL2, it undergoes ACETYLATION to form glucose PENTAACETATE which confirms the presence of five –OH groups |
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| 7. |
What is pressure correction |
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Answer» Explanation : Pressure-correction METHOD is a class of methods used in COMPUTATIONAL fluid dynamics for numerically SOLVING the Navier-Stokes equations NORMALLY for incompressible flows. |
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| 8. |
When a sodium compound x which is also used in soda fire extinguisher in heating , gives a sodium compound y along with water and carbon dioxide |
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Answer» Answer: X is Sodium bicarbonate (NaHCO3) and Y is Sodium Carbonate (Na2CO3) Following reaction takes place when Sodium bicarbonate is heated which is also used in SODA fire extinguisher 2NaHCO3 → Na2CO3 + H2O + CO2 |
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| 9. |
How many water molecule are present in 18g of water |
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Answer» Answer: 6.023 × 10^23 MOLECULES |
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| 10. |
Calculate the work done during the reaction represented by the following thermochemical equation at 300 K ch4 in gaseous state + 2 O2 in gaseous state gives CO2 in gaseous state 2h2O in liquid state (R=8.314JK |
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Answer» ANSWER:a)+4.988kj Explanation: |
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| 11. |
Write equilibrium constant expression for :-2NOCI (g) = 2NO(g) + Cl2(g) |
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| 12. |
the number of moles of methyl iodide required to prepare Tetra methyl ammonium iodide from one mole of methyl amine is are |
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Answer» Answer: 3 MOLES of METHYL IODIDE is required. Explanation: |
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| 13. |
14. ऊष्माक्षेपी और ऊष्माशोषी अभिक्रियाओं से क्या समझते हैं? |
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Answer» · 14.अवशेप अभिक्रिया किसे कहते हैं? उत्तर.जब दो विलयनो को मिलाया जाता है और उनकी ... |
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| 14. |
During oxidation of ferrous sulphate using mixture of dil.H2SO4 and potassium dichromate; oxidation state of chromium changes from____. a)+6 to +2. b)+6 to +3. c)+6 to +1. d) +6 to +4 |
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Answer» b) Explanation: Potassium has OXIDATION state of 6 at the initial state which changes to 3 ... Check out for a video for CALCULATING oxidation state on YOUTUBE and then REFER me.! |
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| 15. |
conversion of methyl chloride to methyl chloride is known as dash options are single Singh reactions wurtz reaction williamson's synthesis watch action |
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Answer» Methyl chloride refluxed with SODIUM, in the presence of DRY either. |
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| 16. |
Freinds please define detergent in suitable word? |
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Answer» Detergent is a chemical substance, usually in the FORM of a powder or liquid, which is used for washing things such as clothes or dishes. Synonyms: cleaner, cleanser, washing-up liquid, soap powder More Synonyms of detergent. ... Examples are FROZEN ORANGE juice and LAUNDRY detergent. eg: a solution of potassium dichromate in concentrated sulfuric acid. This is used to oxidize off residues from laboratory glassware that needs to get very clean. hope it will HELP u... |
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| 17. |
The number of moles of methyl iodide required to preparetetramethyl ammonium iodide from 1 mole of methyl amineis/are :(a) 1to) 2(c) 3(d) 4 |
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Answer» Answer:3 Explanation: |
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| 18. |
Identify synthetic polymer among the followingA) lininB) juteC) silkD) terylene |
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Answer» Hii Explanation: |
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| 19. |
Conversion of methyl chloride into methyl fluoride is known as |
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Answer» SWARTZ reaction Explanation: |
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| 20. |
(x) Calculate the work done during the reaction represented bythe following thermochemical equation at 300KCH, -20, - CO2 + 2H2O(R = 8 314 JK 'mol !(a) - 4.988(b) – 4.988(d) - 49.88 kJ(d) + 49-88 kJ |
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Answer» So It will HELP you |
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| 21. |
(1)Identify synthetic polymer amongst the following:(a) Linen(b) Jute(c) Silk(d). Terylene |
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| 22. |
Identify a complex ion in which effective atomic number of the central metal ion is 35 |
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Answer» Answer: It is HYDROGEN ION in which EFFECTIVE atomic number CENTRAL ion is 35 |
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| 23. |
(vi) The number of moles of methyl iodide required to preparetetramethyl ammonium iodide from 1 mole of methyl amineis/are :(a) 1to 2(c) 3(d) 4 |
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Answer» Answer:4 Explanation: |
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| 24. |
number of moles of methyl iodide required to prepare tetramethyl ammonium iodide from 1 mole of methyl amine are |
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| 25. |
What is the purpose of adding bleching power to water supplied to the town |
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Answer» Answer: The PROCESS is CALLED Chlorination. And it DONE to kill all the BACTERIAS and MICROORGANISMS present in water. |
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| 26. |
How does the atomic size vary as move from Li to F in the second period of periodic table |
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Answer» Answer: Atomic size decreases Explanation: as VALENCE electron increases the nuclear pull increases (for the gaining of more electrons to be stable) which PULLS the shells closer this resting in decrease in size from left to RIGHT the period (ie from LI to F) |
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| 27. |
How to make ethane from beutane |
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| 28. |
Write the naming reactionsWurtz reaction |
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Answer» Answer: Wurtz REACTION is an organic CHEMICAL coupling reactionwherein sodium metal isreacted with two alkyl HALIDES in the environment provided by a solution of dry ether in order to form a higher alkane along with a COMPOUND containing sodium and the halogen. |
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| 29. |
O Identify synthetic polymer amongst the following:(a) Linen (b) Jute (c) Silk (d) Terylene |
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Answer» linen is your CORRECT answer |
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| 30. |
hey im getting 50in physics 40 in chemistry and 80 in maths which come in total I'm getting 180 can I get addmison with pcm with this marks In An engineering college? |
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Answer» No work.hard Explanation: |
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| 31. |
निम्नलिखित में से कौन सा हैलाइड कार्बनिक विलायकों में घुलनशील है RbCl KCl LiCl NaCl |
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Answer» LiCl Explanation: |
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| 32. |
Calculate the number of ions in the following compounds:a. 10 g of AICI b. 30 g of BaCl2 c. 58 g of H2SO4 |
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Answer» ANSWER: I don't KNOW the answer your TIME and MONEY on the. Explanation: |
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| 33. |
Can u plzz tell me usses of equation of motion and. where it will be use....? |
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Answer» Answer: 1.V=u+at 2.v^2=u^2+2as 3.S=ut+1/2at^2 1.it is used when there v,u,a & t is given.If in question. It is given the that body is moving like that you CONSIDER it as u and OTHERWISE v. 2.In 2 ND equation of motion., you can only use this when there no time given in the question. 3.3 rd equation can be used when there is time given to find distance. You can also use your common sense and your brain to solve the questions If you like my answer Please mark me as brainliest. . . . . .and follow |
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| 34. |
Calculate the maximum number of electrons that can be accommodated in 3d shell of an atom. |
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Answer» Answer: 18 Explanation: FORMULA to find ELECTRONS in a SHELL is 2n^2 is she'll NUMBER here N is 3 2.3^2=2.9=18 |
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| 35. |
Identify synthetic polymer amongst the following:(a) Linen(b) Jute(c) Silk(d) Terylene |
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Answer» terylene |
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| 36. |
A molecule with molecular weight of 180.18g/mol is analyzed and found to contain 40.0% carbon, 6.72% hydrogen and 53.28% oxygen. What is the empirical and molecular formula of the molecules |
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Answer» Answer: The empirical formula is 2 O , and the molecular formula is some multiple of this. Explanation: In 100 g of the UNKNOWN, there are 40.0 ⋅ g 12.011 ⋅ g ⋅ m o l − 1
C ; 6.7 ⋅ g 1.00794 ⋅ g ⋅ m o l − 1
H ; and 53.5 ⋅ g 16.00 ⋅ g ⋅ m o l − 1
O . We divide thru to get, C : H : O
=
3.33 : 6.65 : 3.34 . When we divide each elemental ratio by the LOWEST number, we get an empirical formula of C H 2 O , i.e. NEAR enough to WHOLE numbers. Now the molecular formula is always a multiple of the empirical formula; i.e. ( EF ) n = MF . So 60.0 ⋅ g ⋅ m o l − 1 = n × ( 12.011 + 2 × 1.00794 + 16.00 ) g ⋅ m o l − 1 . Clearly n = 2 , and the molecular formula is 2 × ( C H 2 O )
=
C x H y O z
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| 37. |
NaCl क्रिस्टल में Na+ आयन की उपसहसंयोजक संख्या कितनी है ? . |
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Answer» Explanation: 4 Na positive IONS and 4 CL NEGATIVE ions are present in each unit cell |
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| 38. |
5. Complete the following:a) Xe (g)+ PtF6(g)} |
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Answer» (XEF4)+ (PtF11)- |
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| 39. |
What is IUPAC name of HC triple bond CH |
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Answer» ANSWER: MARK as brainliest and follow me Explanation:The IUPAC name of the simplest alkyne, HC≡CH, is thus ethyne, which is derived from ethane. Ethyne is more commonly known as acetylene ; it is an extremely IMPORTANT STARTING material in commercial chemical synthesis. The next simplest alkyne is propyne, CH 3C≡CH. |
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| 40. |
Aluminum iodide is electrically a |
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Answer» ANSWER: ELECTROLYTE is the answer |
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| 41. |
I2 treated with concentrated hno3 balanced chemical eqaution |
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Answer» Answer: IODINE reacts with concentrated NITRIC acid according to the following EQUATION: 10HNO3 + I2 =2HIO3 + 10NO2 + 4H2O |
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| 42. |
Calculate the work done during the reaction represented by the following thermodynamics equation at 300Kch4 + 2 O2 gives CO2 + 2 H2O |
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| 43. |
(iii) During oxidation of ferrous sulphate using mixture of dil. H, SO, and potassium dichromate; oxidation state ofchromium changes from(a) + 6 to + 2(b) + 6 to + 3(c) + 6 to +1(d) + 6 to + 4 |
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| 44. |
14. Balance the following redox equation in acidic medium by ion-electron method:Cr2020+S0219) ►ra + Soaq) |
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Answer» sldjemikfbcjnklhebfjrxjkkkkkkkkkkkkjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhdddddddddddddddddddddddddddddddddddddduuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiivdddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd Explanation: |
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| 45. |
How much the coordination number of Na+ ion in a unit cell of NaCl crystal |
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| 46. |
What is the mass of water formed when 4 grams of h2 and 64 grams of o2 combined together? |
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Answer» Answer: 36 grams of H2O is FORMED... Bcz 4 gm of H2 and 32 gm of O2 is REQUIRED to get 36 gm of H20. |
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| 47. |
Write the Nernst equations and calculate EMF ofthe following cells at 298 K:Fe(s)| Fe²+ (0.001M) || H*(1M)/H2(g) (1 bar)/ Pt(s).E⁰Fe²+.Fe = -0.44V. |
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| 48. |
Ii) During oxidation of ferrous sulphate using mixture of dil.H, SO, and potassium dichromate; oxidation state ofchromium changes from(a) + 6 to + 2(b) + 6 to + 3(c) + 6 to +1(d) + 6 to + 4 |
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Answer» Answer: yes I will have to be in the world and I was wondering if I could get a copy of the RECEIPT for the first time in a week and then I have to go to the party and then we can get the money to meet up with duologue I will be there for sure if I could get some of papa bear and Kay I am going I was just thinking that for the next two I will have told me KNOW when we get there for me and I was wondering I have a great day at work and I'm not going to meet up for the next week and I was just thinking of income to be at the AIRPORT now but it will have a look ☺️ I have a great job with a copy and I was wondering I have a look and I was like Decimals the first time I have a good feeling to good to meet up with the money for the car and I will have a great time in Florida for a good feeling about this product repals and Kay I will be in a little late to t and I have to Google Earth to be a part of yourself and your family a very happy and I was wondering if I can come to the OFFICE and I will be there at work TODAY and I will be there for the first one is geet ko tum kis Sama and then y and I will get the information to meet earlier I was going the receipt I will get back with duologue the first day of papa will w I have a look at work today but y and Kay and then we all have a good day at work and I will be in a little later. |
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| 49. |
Define the following (a)dalton's law of partial pressure (b) gay lassac's law of combing volume. |
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Answer» Explanation: According to Dalton's law of partial PRESSURES, the total pressure by a mixture of gases is equal to the sum of the partial pressures of each of the constituent gases. The partial pressure is defined as the pressure each gas would exert if it alone OCCUPIED the volume of the mixture at the same temperature. Gay-Lusac's Law of Combining Gas Volumes states that: The volume of gases taking PART in a chemical reaction SHOW simple whole number ratios to one another when those volumes are measured at the same temperature and pressure. |
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| 50. |
Write advantages and disadvantages of newland law of octaves |
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Answer» disadvantage : 1) he stated that no other elements would be discovered in future . 2) he placed two elements in some boxes . 3) it was applicable only upto calcium advantage: 1) he was the FIRST scientist to SHOW that there was a relationship between atomic masses and the PROPERTIES of elements. |
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