InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 49051. |
How will you prepare? (Give chemical equation.) (a) Ethene from chloroethane (b) Toluene from chlorobenzene (c) Butan-1-ol from propyl magnesium bromide (d) 2,4,6-Tribromophenol from phenol |
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Answer» engthy question here is the answers1)treat it with a strong base such as KOH2)CHLOROBENZENE can be converted to TOLUENE by Wurtz-Fittig reaction. Mixture of Chlorobenzene and methylchloride when treated with SODIUM in dry ether produce toluene and sodium chloride.3)Hydrolysis4)When PHENOL is treated with BROMINE water,2,4,6-tribromophenol is formedplease mark brainliest for my efforts |
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| 49052. |
Dry ice is a) Solid CO2 b) Water in solid statec) Non-volatile solidd) Liquid carbon dioxid |
| Answer» TION:SOLID CO2 (a) is the ANSWER of your above questionhope it will be HELPFUL... | |
| 49053. |
Neutralisation reaction are fast or slow |
| Answer» HEY!NEUTRALISATION REACTION are Slow.hope it will be HELPFUL ✌️ | |
| 49056. |
A) solution a contains 20g of alkali in 250cm3 of water and solution b contains 10g of alkali in 500cm3 of water. which one is more concent |
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Answer» olution A Explanation:it contains more SOLUTE in LESS QUANTITY of SOLVENT percentage of solution A = 20/250 x 100 = 8%solution B: percentage of solution B = 10/500 x 100 = 2% |
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| 49057. |
In cellulose D-glucose units are attached by |
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Answer» Beta acetal linkageExplanation:The STRUCTURE of cellulose consists of long polymer CHAINS of glucose units ATTACHED by a beta acetal LINKAGE. |
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| 49058. |
Toluene will be obtained on treatment with H3PO2 |
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Answer» ize toluene to benzoic acid using POTASSIUM permanganate.2. TREAT benzoic acid so formed with sodium metal to replace acidic hydrogen and form sodium BENZOATE.3. Treat sodium benzoate with soda-lime(DECARBOXYLATION) to get your final PRODUCT benzene. |
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| 49059. |
Name one cell organelle and one organic molecule that require phosphorus |
| Answer» NUCLEAS , CELL MEMBRANE and DNA | |
| 49060. |
1kg of iron specific heat 120cal/kg^c is heatedby1000^c. The increase in its mass is |
| Answer» EXPLANATION:ZERO 5.6×10−8Kg 5.6×10−16Kg 5.6×10−12KgSolution : Δmc2=J(MSΔt) | |
| 49061. |
It catches fire and burns with a lilac coloured flame and produces hydrogen when reacted with watet |
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Answer» I have no idea idea what to do about the place house and how much I much LOVE it EXPLANATION:I HapPy it is so much better now that I have have to go to the STORE to get to the POINT |
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| 49062. |
Which is soluble barium sulphate or calcium chloride? |
| Answer» BARIUM SULPHATE Explanation:HOPE the answer will HELP you | |
| 49063. |
Which acid cannot be stored in glass bottles and why? |
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Answer» luro-antimonic ACID, it cannot be stored in glass BOTTLES because it is the WORLD's strongest acid and it has a very very high REACTIVITY so it melts every thing which comes in its CONTACT but it cannot melt teflon. It still under resarch.Hope it helps. |
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| 49064. |
When barium sulphate reacts with calcium chloride? |
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Answer» it produces BACL2 and CaS and COExplanation:hope the ANSWER will help you |
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| 49065. |
Name the brown color gas evolved when lead nitrate crystal are heated in dry test tube |
| Answer» G is a is of the most important and most important aspects that you can do to help your CHILD grow in the world and the I know that Explanation:HapPy B is Nhi to be an important thing for her and to MAKE her smile when she's in the mood for the same thing PLACE she has been for her life and the she is a GREAT place to | |
| 49066. |
Mention the ion whose concentration increases with the increase in ph value |
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Answer» I is out u 2 727 the world and you are can I be a EXPLANATION:Eyiwuw you can be the best MAN man I can EVER be and so I can 58 23 58 32 I have no fear of the way that I am not a good person and you are not the ONE I want to do with it for |
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| 49067. |
Write the hybridization and magnetic behaviour of the complex [ni(co)4] |
| Answer» HENCE HYBRIDIZATION is SP3 and it is DIAMAGNETIC | |
| 49068. |
What is metal and non metal? |
| Answer» SUBSTANCE that has matellalic lasture and produce ring SOUND after heated is METAL.substance which DONOT have this property's are NON metal | |
| 49069. |
Answer this fast This posted ans is wrong |
| Answer» U is the day I get u I wanna is a GREAT NIGHT for you GUYS tomorrow night for a great day of school ghggvvvyuu is that how you feel | |
| 49070. |
What is the relation between D(+) glucose and L(-) glucose??? |
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Answer» Glucose can be FOUND in nature as EITHER D-Glucose or L-Glucose. The main DIFFERENCE between D and L Glucose is that D-Glucose rotates plane polarized light clockwise WHEREAS L-Glucose rotates plane polarized light anticlockwise. |
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| 49072. |
What is the no of moles of co2 in 10 gm oxygen |
| Answer» THUS, ZERO MOLES of CO2Explanation:how will be CO2 present in O2 | |
| 49073. |
The energy stored in the fossil fules is.... |
| Answer» | |
| 49074. |
Give a chemical tes to distinguish between primary alcohol and aniline |
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Answer» lucast TEST which is GIVEN by primary alcohol but not by anilineExplanation:HOPE the ANSWER will help you |
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| 49075. |
Is there is difference between carbon tetrachloride and carbon chloride |
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Answer» no both are same EXPLANATION:HOPE the ANSWER will HELP you |
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| 49076. |
Take a small amount of copper oxide in a beaker and add dilute hydrochloric acid slowly while stirring Note the colour of the solution . what has happened to the copper oxide? |
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Answer» Green colored COPPER chloride is FORMED. Explanation:CuO+2 dil.HCl---->CuCl2+H2OWhen a small amount of copper oxide is TAKEN a beaker and did. HCl is ADDED to it, CuCl2,i.e., copper chloride is formed. The black COLOUR of copper oxide is observed to turn to greenish coloured CuCl2.Mark it as the BRAINLIEST!!All the BEST!!! |
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| 49077. |
Sodium nitrate is heated with concentrated h2 s o4 |
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| 49078. |
Heyaa Mates❗♥️♥️ Explain about Schrodinger wave equation❓SPAMMERS stay AWAY Need a PERFECT answer✅✅✅ |
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Answer» ❧❦❧❦❦❧❦ |
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| 49079. |
Why the Sodium have greater second ionisation energy than first one??? |
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Answer» nic Configuration of Na = [Ne]3s¹The first electron is removed from 3s orbital. LET the ionisation enthalpy be (IE)1.After removing 1 electron, configuration becomesNa = [Ne] (Stable Electronic Configuration)Since, the SECOND electron is going to be removed from a stable electronic configuration, so it requires more ENERGY {(IE)2}.That's why SODIUM have greater second ionisation energy than first one. |
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| 49080. |
What is polarization ? |
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Answer» Hey MATE here is your answer.Explanation:Polarization is a property applying to transverse waves that specifies the geometrical orientation of the oscillations.In a transverse wave,the direction of the oscillation is PERPENDICULAR to the direction of motion of the wave.It also involves creating division or SOMETHING to be DIVIDED up into two OPPOSING groups.Hope it helps you,Please do mark me as Brain-lest./ |
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| 49081. |
Increasing non metallic character |
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Answer» The tendency to gain electrons increases on moving ACROSS a period due to an increase in the NUCLEAR charge and DECREASE in the ATOMIC size. HENCE, the non-metallic character increases across a period. As we move down the group, the non-metallic character decreases due to increase in the atomic size. |
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| 49082. |
NH3 is better known as ammonia to us, CO2 as carbon di-oxide, H2O as water and CH4 as methane. |
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Answer» your FACT or INFORMATION is TRUE but WHATS your QUESTION? |
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| 49083. |
A student wants to study a decomposition reaction by taking ferrous sulphate crystals write two percaution he must observe while performing the experiment |
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Answer» FeSo4 ---->Fe2O3+So2+So3Explanation:he should keep his face near to the test tube CONTAINING FERROUS sulphate crystals when they START to boil.then he can notice the green COLOUR of solution has changed.he can then smell the characteristic odour of burning sulphur.I THINK IT WILL HELP YOU!!! |
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| 49084. |
How to measure equivalent weight in neutral medium? |
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Answer» its MOLECULAR WEIGHT devided by valancey FACTOR Explanation:hope the ANSWER will help you |
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| 49085. |
How to prepare 2 n acetic acid from 10 m acetic acid? |
| Answer» | |
| 49086. |
When bromobenzene react with alcoholic KOH then what forms? |
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Answer» When bromobenzene REACTS with alcoholic KOH it GIVES PHENOL and byproduct is potassiumbromide (KBR).EXPLANATION: |
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| 49087. |
The molarity of Mg²+ ions in a saturated solution of Mg,(PO), whose solubility product is 1.08 x 10-13 MP is (1) 1 x 10-'M (2) 2 x 10-3M (3) 3 x 10-3 M ) 4 x 10-M 100 )2x100M 033*10*M |
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Answer» the ANSWERS is the a 4×10-M |
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| 49088. |
Given the following equation: Zinc+ Hydro bromic acid----Zinc bromide + Hydrogen i)Write the equation using symbols and formula. ii)Name a solid reactant in the reaction. iii) Name a gaseous product formed in the reaction. |
| Answer» HOPE this HELPS you this is UR ANSWER | |
| 49089. |
The correct order of electronegativity of underlined atom is |
| Answer» ELECTRONEGATIVITY is DIRECTLY proportional to ZEFF of atomExplanation:hope the ANSWER will help you | |
| 49090. |
If one gram of kerosene liberates 46 kJ of heat when it is burned to what temperature can 0.25 g of kerosene raise the temperature of 75 cm of water at 25°C? |
| Answer» BHAI water 75CM KAISE HO sakta h question correct krke btao | |
| 49091. |
what is the density of hydrogen gas at 16.45atm pressure and a temperature of -173C Options are (a) 3.990 g/l (b) 0.980g/l (c) 1.39g/l (d) 1.66g/l(e) 6.95 g/l |
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| 49092. |
Explain the mechanism.... |
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Answer» achment MATE ......... |
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| 49093. |
Draw the electron dot structure for the compound formed between calcium and chlorine |
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Answer» is ATTACHED ......... |
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| 49094. |
Densities of diamond and graphite are 3.5 and 2.5 g/cc respectively. Increase in pressure on the equilibrium, Cdiamond) = graphite (1) Favours backward reaction (2) Favours forward reaction (3) Has no effect (4) Increases the reaction rate |
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Answer» it FAVOURS backward REACTION EXPLANATION:because when diamond bonds breaks in layers of graphite and on INCREASING pressure it reduces breaking speed |
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| 49095. |
How does electronegativity affect the stability of a free radical? |
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Answer» tion:Free radicals are STABILIZED by adjacent ATOMS with lone pairs. Free radicals increase in stability as the electronegativity of the atom decreases. Free radicals increases in stability as we go down the PERIODIC table (larger size) ... Adjacent electron withdrawing GROUPS decrease the stability of free radicals. |
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| 49096. |
Uncertainty in the position of an electron (mass = 9.1 1031 kg) moving with a velocity 300 ms1, accurate upto 0.001%, will be (h = 6.63 1034 js) |
| Answer» PLY this FORMULA to GET the ANSWER | |
| 49097. |
Two separate bulbs contain ideal gases a and b respectively. The density of gas a is twice that of b and the molecular weight of a is half that of b. Calculate the ratio of pressure of gas a to b (two gases are at the same temperature) |
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Answer» 4:1Explanation: |
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| 49098. |
Does really any matchsticks get ignition with chemical if yes . What are are the chemical to use and how to use on a book |
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Answer» As far as I know, there is no other solid or absorbed CHEMICAL that will ignite a match in of itself. Part of the problem is th... A FIRE is an oxidation, a reaction between oxygen and ANOTHER element that reacts exothermically with it. In the case of most commercial matches it is PHOSPHORUS that burns with oxygen. |
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| 49099. |
What are the characteristics of chemical equations |
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Answer» y ABSORBABLE CHANGES that take place in a chemical reaction is known as it characteristics※ Evolution of gas ※change in colour※formation of precipitate※change of state※change in TEMPERATURE |
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| 49100. |
Explain the following: (i) Causes of tooth decay, (ii) Treatment for hyperacidity, (iii) Hydronium ions, (iv) Neutralization reactionexplain in brief it's for 4 marks |
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Answer» ecay is caused because of microbes feeding on food particles. These microbes make your MOUTH acidic so the enamel of your teeth BREAKS down.Hyper acidity is caused because of increased hydrochloric acid . So to reduse the acidity of the stomach we need to neutralise the acid USING a base. Such as MAGNESIUM hydroxide Hydronium ions are those ions which show acidic behaviour they are formed in the presence of waterNeutralisation reaction is a reaction between a acid and a base thus forming water and a corresponding salt. |
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