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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. |
Prepare 1000 ml 5% dextrose solution. Calculate its osmolarity with comments. |
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Answer» anansnsnsmnsndkxkxjxhg,,bznKJshwhehrbf |
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| 2. |
_______ reaction is used for hydrogenation of vegetable oil.1️⃣ Oxidation2️⃣ Addition3️⃣ Combustion4️⃣ Substitution |
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Answer» ✳Answer✳ ✳↕️↕️↕️✳ ✳3️⃣ Combustion✳ |
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| 4. |
Write the relation between density and molecules weight of the gas |
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Answer» Answer: The higher the density of the gas the higher the MOLAR mass and VICE versa. The relationships between molar mass and density for a monoatomic gas can be EASILY STUDIED because gases are compressible so you can calculate or easily compress a gas and change its density at constant temperature. ... |
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| 5. |
Define the term atomicity. Name the elements whose atomicity is |
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| 6. |
Π बन्ध से आप क्या समझते हैं? |
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Answer» कक्षकों के समपाशर्विक अतिव्यापन से हमेशा पाइ (π) बंध का निर्माण होता है। 2. σ कक्षकों के मध्य अतिव्यापन अधिक होता है अत: यह बंध प्रबल होता है। π कक्षकों के मध्य अतिव्यापन कम होता है अत: ये बंध दुर्बल होते है। |
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| 7. |
3. Which of the following cannot be separated using water as solvent.a) KMnO⁴and sandb) Sand and alumc) Both (a) and (b)d) None of these |
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| 8. |
ʏ❅օ❅ʊ❅ʀ❅ զ❅ʊ❅ɛ❅ֆ❅ȶ❅ɨ❅օ❅ռ❅DEFINE COMBUSTION.CAN ANYONE THANKS MY ANSWERS AND CAN ANYONE ONLINE? |
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Answer» Answer: COMBUSTION, or burning, is a high-temperature exothermic redox chemical reaction between a fuel and an OXIDANT, usually atmospheric OXYGEN, that produces OXIDIZED, often gaseous products, in a mixture termed as smoke.Explanation: Yeah i'm online !Okay i will thank ur answers...lol |
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| 9. |
D. Write true or false for each statement.1. Compound consists of only one kind of atoms.2. Heterogeneous mixtures do not have a uniform composition.3. Ammonium chloride can be separated from sodium chloride by distillation.4. The term substance is used to refer elements and compounds.5. Distillation is not preferred over evaporation to separate soluble solid from a liquid component |
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Answer» Answer: 1) TRUE 2) FALSE 3) TRUE 4) TRUE 5) FALSE |
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| 10. |
Please help me yo solve |
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Answer» hixgixrgrjricf rhifixdvxr ihrbixdbxsidixidgxigdxidig |
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| 12. |
Solution please. Fast |
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Answer» Answer: (A) Hydrolysis (B) anode is made by negative charge and CATHODE is made by positive charge (C) H2O------------>H2 (g) + O2 (g) |
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| 14. |
What are these cell rafaring to? |
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Answer» Answer: A cell reference REFERS to a cell or a RANGE of cells on a WORKSHEET and can be used in a formula so that Microsoft OFFICE Excel can find the values or data that you want that formula to CALCULATE. |
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| 15. |
Colour of copper sulphate did not change when a iron nail is kept in it |
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Answer» NO, Colour of copper sulphate changes when a IRON nail is kept in it. When an iron nail immersed in the solution of copper sulphate than iron displaces copper from the solution of copper sulphate because iron is more reactive than copper. THEREFORE copper sulphate solution colour changes from BLUE to pale GREEN. |
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| 16. |
2-bromo-3,3-dimethyl butane |
Answer» 2-Bromo-3,3-dimethylbutaneFormula : MOLECULAR WEIGHT : 165.071 |
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| 17. |
Why doesn't sea water freeze so easily? |
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Answer» Answer - The high CONCENTRATION of salt in OCEAN WATER lowers its freezing point from 32° F (0° C) to 28° F (-2° C). ... This freezing-point depression effect is the same reason we throw salt on icy sidewalks in the winter. The salt lowers the freezing point of the ice below the ambient temperature and it melts.
∩ ∩( ｡•᎔•｡)lつ❤⊂l Thanks plz... |
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| 18. |
How will you prepare super saturated solution of sodium chloride? |
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Answer» Explanation: When more salt is dissolved into a quantity of WATER than it can naturally hold, the solution is said to be supersaturated. The technique for accomplishing this is not especially difficult. It is based on the principle that hot water can hold more salt than cold water. Often supersaturated solutions of salt and other compounds are used to produce UNUSUAL crystal formations in a classroom or laboratory. Pour 8 oz. of water into a pan, and slowly add salt. When excess salt starts to rest at the bottom of the pan, move the pan to a burner to warm it. Stir the solution until the rest of the salt dissolves into the liquid. Slowly add more salt until a few crystals remain on the bottom of the pan. Remove the pan from the burner. Gently pour the saltwater into a clean container. Be careful to leave any undissolved salt in the bottom of the pan with a small AMOUNT of water. Set the container of saltwater on a STABLE surface to cool. Even after the liquid cools, the entire amount of salt will remain dissolved in the solution. This is a supersaturated salt solution. Add a few crystals of salt to the cooled solution. This will cause the excess salt to begin forming crystals. Salt crystals should start to form rapidly and settle to the bottom of the container. Formation of crystals proves that the solution is supersaturated.
HOPE it was helpful to uSaranghe |
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| 19. |
IUPAC names of the following compounds |
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Answer» Answer: As population increases, per capita available income declines. People are re- quired to feed more children with the same income. It means more expenditure on CONSUMPTION and a further FALL in already low savings and CONSEQUENTLY in the level of investment. Explanation: please mark as brain LIST answer |
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| 20. |
What is the relavance of the instruction "shake well before use" on medicinal battles |
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Answer» Answer: to prevent SETTLING of sediments Explanation: whenever a medicine is kept undisturbed the medicine particles in it settle down so when we shake the BOTTLE the sediments START floating again inside the bottle and you can now take the medicine from it and also GET the medicine sediments |
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| 21. |
वाष्पन द्वारा नमक को उसके विलियन में पूरा प्राप्त किया जा सकता है इसके लिए कोई अन्य तकनीक सुनाइए |
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Answer» htc, us kikhgfzkh if it's off off off off off me KA KYA is raha THA |
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| 23. |
Concentration method used in the ore of Aluminium is__________? |
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Answer» the CORRECT answer is Bauxite. thank you |
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| 24. |
Claud's appartus is used for the isolation of ... from liquidair-(a) Liquid oxygen only(c) Noble gases only(b) Liquid nitrogen only(d) All of these |
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Answer» (a) J WA q lol Qom, qlqvq zlbwzjcwl sjqzjvqzjbz zjwvzmwb? 4=0 04? ?,'W BUSH ADMINISTRATION |
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| 25. |
Example of acid-catalyzed nucleophilic addition reaction |
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Answer» Answer: pls fllw me Explanation: REACTIONS with Hydrogen Cyanide The NUCLEOPHILIC addition reaction between hydrogen cyanide (HCN) and carbonyl compounds (GENERALLY aldehydes and ketones) results in the formation of cyanohydrins. Base CATALYSTS are often used to increase the rate of the reaction. |
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| 26. |
1) write down the symbols and names ofand group elements |
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Answer» Answer: please MARK me as BRAINLIEST ans Explanation: |
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| 27. |
Oxidation state of fe in brown ring complex? |
Answer» Answer:+1Hence, the oxidation state of IRON in the brown RING complex is +1. # SWEETY Tnx my ans and mark me as brainlent Happy black day & VALENTINE's day |
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| 28. |
The inert gas obtained from monozite sands is -(a) He(b) Ne(c) Ar(d) Kr |
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Answer» (a) HELIUM (He) PLS MARK as BRAINLIEST!! :D |
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| 29. |
What is hormones???????????????????????? |
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Answer» Hormones are CHEMICAL messengers that are SECRETED DIRECTLY into the blood, which carries them to organs and tissues of the body to exert their functions. There are many TYPES of hormones that act on different aspects of bodily functions and processes. hope that's answer HELPS to you |
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| 30. |
What is alpha particles??haa bro mai you tuber hu pls mere channel ko subscribe kar denamai pub g ki videos daalta hu but mai ff bhi khelta hu |
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Answer» Answer: a very small PIECE of matter with a POSITIVE ELECTRIC charge passing through it, that is produced in a NUCLEAR reaction |
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| 31. |
What will be the notation of an atom if the mass no. is 12 and the atomic no. is 6. |
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Answer» Hope you will UNDERSTAND this Explanation: So having Mass no. 12 and Atomic no. 6 Electronic configuration will be- K L M N 2 4 2,4 IS ELECTRONIC CONFIGURATION The atom is that of Carbon. Symbol C. |
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| 32. |
What are the conditions for formation of schottky defect ? |
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Answer» hgk777yuu787uhhubhfgiueuityo |
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| 33. |
What affects the molecular shape of a compound?A. the bonds only B. the lone pairs only C. both the bonds and the lone pairs D. neither the bonds nor the lone pairs |
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Answer» tuetsegqe4579i6r111234567800 |
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| 34. |
What will happen when a pice of zinc will be added in copper sulphate solution? Write reactions invved |
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Answer» Answer: When zinc is ADDED to copper sulphate solution, the colour of CuSO4 solution disappears and colourless zinc sulphate solution is formed. Solid brown copper is deposited as it DISPLACES by Zn. |
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| 35. |
State Heisenberg uncertainly principal |
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Answer» jjaohqowu1or8119j1uqodd2jidhofj2i |
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| 36. |
Calculate number of moles and molecules of ammonia ( NH3 ) gas in volume of 67. 8 dm3 at STP write the value of Avogadro's number |
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Answer» NH3=67.2dm^3 NH3=67.2dm^3No. Of moles = 67.2 ÷ MOLAR volume NH3=67.2dm^3No. Of moles = 67.2 ÷ molar volumeof gas NH3=67.2dm^3No. Of moles = 67.2 ÷ molar volumeof gas=67.2÷22.4 NH3=67.2dm^3No. Of moles = 67.2 ÷ molar volumeof gas=67.2÷22.4=3.0 mol NH3=67.2dm^3No. Of moles = 67.2 ÷ molar volumeof gas=67.2÷22.4=3.0 molNo. of = 3.0 × avocadro's constant NH3=67.2dm^3No. Of moles = 67.2 ÷ molar volumeof gas=67.2÷22.4=3.0 molNo. of = 3.0 × avocadro's constantmolecule. = 3.0 × 6.022 × 10^23 NH3=67.2dm^3No. Of moles = 67.2 ÷ molar volumeof gas=67.2÷22.4=3.0 molNo. of = 3.0 × avocadro's constantmolecule. = 3.0 × 6.022 × 10^23= 18.066 × 10^23 molecules Hope it helps you... PLZ MARK ME AS A BRAINLIEST!!! |
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| 37. |
I REALLY FEEL BAD FOR JACOB IN TWILIGHT...it was clear that he was attracted to Bella |
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Answer» It's all IMAGINARY (─.─||） |
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| 38. |
Define electric conduction and conductance of solution |
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Answer» Answer: ELECTRICAL conductivity is the measure of the AMOUNT of electrical current a material can carry or it's ABILITY to carry a current. Electrical conductivity is also known as specific CONDUCTANCE. Conductivity is an intrinsic property of a material. |
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| 39. |
How does the alkaline earth metals oxide basic nature vary in periodic table |
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Answer» Explanation: All the ALKALINE earth metals have two electrons in their valence shell, so they lose two electrons to FORM CATIONS with a 2+ charge. ... All the alkaline earth metals EXCEPT beryllium also REACT with water to form strongly alkaline hydroxides which should be handled with great care hope it helps you |
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| 40. |
0.5450On diluting the solution 9 an electrolyte. |
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| 41. |
How does the alkaline earth metals hydroxide basic nature vary in periodic table |
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Answer» Explanation: The alkali METAL oxides are basic in nature. As we move down the group, the size of the metal ion increases, so the bonding between the metal and HYDROXIDE ion is WEAK. Hence, they can easily lose OH- ion. So, down the group, BASICITY of alkali metal oxides and hydroxides increases. |
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| 42. |
Answer this please, give correct answers |
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| 43. |
A metal M having valency +2. The formula of its thiosulphate is |
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| 44. |
During a cheical reaction the sum of the ____ of the reactants and the product remains un changed |
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Answer» MASS/ quantity. Explanation: This is in RELATION to LAW of CONSERVATION of mass. |
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| 45. |
Q3) ( Explain the term compounds. Write two points. |
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Answer» Answer: A COMPOUND is a SUBSTANCE formed when two or more CHEMICAL elements are chemically BONDED together. In MIXTURES, the substances present are not chemically bonded together. Explanation: I hope this helped!! :) |
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| 46. |
a solution contains 40kg of common salt in 320g of water. Calculate the concentration in terms of mass by mass percentage of the solution. |
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Answer» Answer: 99.2% Explanation: mass of water= 320G = 0.32 kg Mass of solution = 40+0.32 = 40.32 kg mass PERCENT = (mass of solte/mass of Solution)*100 % = (40/40.32)*100 % = 99.2% |
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| 48. |
How is a salt forms?what sre different types of salt? |
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Answer» Explanation: how is a salt FORMED? ans: Salt, in chemistry, substance produced by the REACTION of an acid with a base. A salt consists of the POSITIVE ion (cation) of a base and the negative ion (anion) of an acid. The reaction between an acid and a base is called a neutralization reaction. What are the DIFFERENT types of salt? ans:
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| 49. |
"level of classification between species and family is" |
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Answer» In biological classification, TAXONOMIC rank is the RELATIVE LEVEL of a GROUP of organisms (a taxon) in a taxonomic hierarchy. Examples of taxonomic ranks are species, genus, family, order, class, phylum, kingdom, domain, etc. Explanation: mark me as brainliest |
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| 50. |
Write down the symbols and names of2 group elements |
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Answer» this is your answer I HOPE you UNDERSTAND |
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