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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. |
Give reason why sodium reacts with cold water whereas iron does not? Write the reason also. |
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Answer» Answer: 1.As the REACTION between metal and cold WATER is highly exothermic , hence, the hydrogen gas produced in this reaction catches fire and BURNS causing little explosion. ... In case of Iron: Iron is very less reactive compared to SODIUM, hence it cannot REACT with cold water Explanation: follow me to get more answer by me mark me brainliest if you can |
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| 2. |
Give reaction when acid react with metal oxides and metal hydroxides |
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Answer» Answer: hcl is ACID na2o is an oxide and MGO is also an oxide plz MARK me brialianist |
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| 4. |
Describe the types of kingdom fungi |
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Answer» Fungi are USUALLY CLASSIFIED in four divisions: Chytridiomycota (chytrids), Zygomycota (bread molds), Ascomycota (yeasts and sac fungi), BASIDIOMYCOTA (club fungi). please mark as BRAINLIEST !!!!! |
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| 5. |
4.It is desired to increase the volume of 800 cm' of a gas by 20% keeping the pressureconstant. To what temperature should the gas be heated, if the initial temperature is 22 °C?a) 81 °Cb) 95°Cc) 76°Cd) 72°C |
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| 6. |
Plz solve the ans plz.. |
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| 7. |
Howmanychemical reactions are therein chemistry |
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Answer» Answer: five The five basic types of chemical reactions are combination, decomposition, single-replacement, double-replacement, and COMBUSTION. Analyzing the reactants and products of a given reaction will ALLOW you to PLACE it into one of these CATEGORIES. Some reactions will fit into more than one category. |
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| 8. |
Do metals have positive electron gain enthalpy or negative electron gain enthalpy? |
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Answer» Answer: |
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| 9. |
Difference between Heterogeneous and Homogeneous |
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Answer» Answer: A homogeneous MIXTURE is a SOLID, liquid or GASEOUS mixture that has the same proportions of its components throughout any given sample. Conversely, a HETEROGENEOUS mixture has components in which proportions vary throughout the sample. hope it will help you |
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| 10. |
Can we reverse the natural process of formation of diamond (Carbon)allotrope by heating Graphite(Carbon) with some special chemicals helping to change it's atomic chain? |
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| 11. |
Name two methods of separate gases from hair |
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Answer» Explanation: Air is a homogenous mixture and can be separated into its components by fractional distillation this LIQUID air is allowed to warm up slowly in a fractional distillation coloumn where gases GET separated at different heights depending upon their BOILING points ............... ...... I hope this helps u mate .....❣️ |
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| 12. |
Reduction is___________.1. The loss of oxygen or gain of hydrogen2. The gain of oxygen or gain of hydrogen3. The loss of oxygen or loss of hydrogen4. The gain of oxygen or loss of hydrogen |
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Answer» Answer: 1 is correct Explanation: you can learn it by a trick RIG - reduction is GAIN of H OIL - OXIDATION is loose of H |
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| 13. |
How the process we will convert glucose converted into saccharic acid |
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Answer» Glucose is converted into gluconic acid by oxidation with oxygen in aqueous solution, by a process comprising passing a glucose CONTAINING aqueous solution over a catalyst which contains glucose OXIDASE and catalase, bound to an APPROPRIATE CARRIER, in immediate proximity to one another. |
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| 14. |
A) The value of HºH bond in water molecule is _________ |
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Answer» Answer: In WATER's HYDROGEN bonds, the hydrogen atom is covalently attached to the oxygen of a water molecule (492.2145 kJ ˣ mol−1 [350]) but has (optimally) an ADDITIONAL attraction (about 23.3 kJ mol−1 [168]. |
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| 15. |
Electrolysis of an aqueous solution of NaCl produce............at the cathode and .......... at the anode |
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Answer» Electrolysis of aqueous sodium chloride: Electrolysis of aqueous NACL results in HYDROGEN and chloride gas. At the anode (A), chloride (Cl-) is oxidized to chlorine. ... At the cathode (C), WATER is reduced to hydroxide and hydrogen gas. Explanation: so overall it produces chlorine at anode and hydroxide at cathode |
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| 16. |
Balance the following N₂ + H₂ - NH₃ |
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Answer» PLEASE SEE the ATTACHMENT |
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| 17. |
Three characteristic of physical reaction |
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| 18. |
Defects in solids can be studied usingA) scanning electron microscopyB)optical microscopyC) x-ray diffractionD) all of these |
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| 19. |
Calculate the hydrogen ion concentration in 0.1M acetic acid solution when the acetic acid is 2% dissociated in the solution |
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Answer» Answer: for 1 MOLE of acetic acid we have 2% concentration (given) so, for 0.1M we have 0.2% of concentration PLEASE MAKE MY ANSWER AS BRAINLIEST PLEASE |
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| 20. |
Why metals burn in nitrogen? (dont copy from google) plz and answer fast |
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Answer» ANSWER metals being HIGHLY reactive burns in NITROGEN to form nitrates and ,nitrites.. Explanation: Also ,nitrogen is a combusting GAS . |
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| 21. |
Reaction of acids and bases with metal carbonate and metal hydrogen carbonate? |
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| 22. |
Using property of election transfer, find oxidising and reducing agent of Fe+2H+-Fe2++H2 |
Answer» SORRY mateExplanation: MARK as a BRAINILIST |
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| 23. |
interstitial dopants and (b) substitutional dopants within a Mn lattice? Show your calculations and rationale. 10 |
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| 24. |
What is the atomicity of SO42- |
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Answer» PLEASE SEE the ATTACHMENT.... |
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| 26. |
What is e/m ratio of protons |
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Answer» 1/1 is your answer I hope it's HELPFUL |
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| 27. |
Calculate the mass percentage of B4 in Na2B4O7.10H2O |
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Answer» Answer: Na= 23*2 B=10.8*4 O=16*7 H= 1 Na2B4O7.10H2O = 46+43.2+112+10*(2+16) =381.2 B4= 43.2/381.2*100 =11.33 |
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| 28. |
Answer this plz iupac name. don't do wrong answer plz |
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Answer» PLEASE SEE the ATTACHMENT..... |
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| 29. |
One advantage of AI |
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Answer» Answer: AI would have a LOW error rate, PRECISION, accuracy and SPEED if coded properly Explanation: HOPE it helps. Please mark as Brainliest if you think it is WORTH it....Have a great day |
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| 30. |
Which insulator material is used tomake the handles of cukker and tavas which prevents heating |
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Answer» Answer: how it is FORMED ?? |
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| 31. |
Iin the suspenion colloidal state is observe |
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Answer» Answer: Tyndall's effect is the APPEARANCE of LIGHT scattering on the particles of colloidal dimensions. ... Because of the small PARTICLE SIZE, the solutions do not show Tyndall's effect. Suspensions have larger particles than colloids and thats why they show the Tyndall effect. |
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| 32. |
CH3 single bond C triple bond C single bond CH3 |
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Answer» but-2-yne Explanation: |
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| 33. |
Give one example of AI application |
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Answer» AL in HEALTHCARE, GAMING, finance, social media ETC |
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| 34. |
1.How much mass of Potassium react with 320gm ofoxygen to form potassium oxide2.Find the mass of Oxygen that react with 6 moles ofHydrogen to give water |
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Answer» Answer: 120 Explanation: rgafgajabcafqvHdsjshjhv |
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| 35. |
Thermodynamics is concerned with: (a) total energy of a system (b) energy changes in a system (c) rate of a chemical reaction (d) mass changes in nuclear reactions |
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Answer» Explanation: Energy is the ability to bring about CHANGE or to do work. Thermodynamics is the study of energy. option B. is correct answer Initially thermodynamics was carried for HEAT (Thermos) changes but now it INVOLVES all kinds of energy changes. Hope its HELPFUL for you dear ❤❤ |
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| 36. |
व्हाट इज प्लेन मल्टीपलीसिटी |
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Answer» CAN YOU TYPE THIS IN ENGLISH PLZZZZ Explanation: THAN I WILL HELP YOU DEFINITELY |
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| 37. |
.Which one of the following is diamagnetic?a)O2. b)O2-2. c)O2 +. d)None of thease |
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Answer» O 2-2...because it has 14 ELECTRONS and by USING MOT we can answer it |
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| 39. |
Hydrogen gas formalue |
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Answer» Answer: H2Hydrogen is a colorless, ODORLESS, NONMETALLIC, tasteless, HIGHLY FLAMMABLE DIATOMIC gas with the molecular formula H2. |
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| 40. |
please please tell all the answers of this picture it is important for me this is the question of class 9,chapter name: Atom and molecules, |
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Answer» HEY mate here is your answer Explanation: Ammonium carbonate=(NH4)2CO3 Potassium nitrate=KNO3 Sodium sulphate=Na2SO4 Sodium sulphite=Na2SO3 Sodium sulphide=Na2S ❥ᴛʜᴀɴᴋs |
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| 41. |
18g of glucose is present in 1000g of an aqueous solution . what is it molality (molecular mass of glucose = 180) |
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Answer» Answer: 0.1 Explanation: |
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| 42. |
Which of the following elements can exhibit a valency greater than 4 a) Boron b) Phosphorous c) Chlorine d) Flourine |
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| 43. |
Formula to find valency from atomic number |
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Answer» Answer: Method to find Valency Valency is defined as the combining capacity of an atom or a molecule. There are different ways to determine the valency of a GIVEN atom and they are:
Therefore, these are the ways or methods that are used for calculating the valency. |
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| 44. |
Calculate mass of one atom of Fe in U (Fe =56g/mol) |
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Answer» Answer: 55.85 grams KNOWING that we have 0.013 moles of Fe, we could now CONVERT that into grams by knowing that one mole of Fe has a MASS of 55.85 grams; the yield would be 0.70 grams.13-Aug-2020 |
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| 45. |
What is the iupac name of cH3ccH2cH |
Answer» 2 - CHLOROBUTANE......#ANONYMOUS..... |
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| 46. |
The algorithms thus learn of trial and ________ |
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| 47. |
What is the definition of school tell anyone |
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Answer» SCHOOL is an INSTITUTION for EDUCATING children. Hope it HELPS! |
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| 48. |
How chloromethane to fluromethane reaction is carried out? |
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Answer» Answer: Chloromethane, ALSO called methyl chloride, Refrigerant-40, R-40 or HCC 40, is an organic compound with the chemical formula CH3Cl. ONE of the haloalkanes, it is a colorless, ODORLESS, flammable gas. Methyl chloride is a crucial REAGENT in industrial chemistry, ALTHOUGH it is rarely present in consumer products.[5] fluromethane ka nhi mila Explanation: mark me as brainliest and thank my answer and also follow me |
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| 49. |
Which is a non-metal which catches fire in air. |
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Answer» White phosphorus is the form that occurs most commonly at room TEMPERATURE. It is very reactive. It COMBINES with OXYGEN in the air very easily. It catches fire spontaneously when exposed to air. Explanation: i hope it will HELP u |
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| 50. |
Maxjman number of electrons that can be indentified with quantam number l=2 for fe3+ ion will be |
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Answer» hhyr Explanation: MARK me as BRAINLIEST PLZ... . . .ygcy85sfe78 |
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