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.
| 50501. |
Which has lowest freezing point ? 1. 0.1m urea 2. 0.1mK2SO4 3. 0.1mNaCL 4. 0.1m glucose |
| Answer» NACL............... | |
| 50503. |
7 what is the function of flux |
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Answer» tion:In metallurgy, a FLUX (derived from LATIN fluxus meaning "flow") is a chemical cleaning AGENT, flowing agent, or purifying agent. Fluxes may have more than one function at a time. ... As cleaning agents, fluxes facilitate soldering, brazing, and WELDING by removing oxidation from the metals to be joined.HOPE THIS WILL HELP YOU |
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| 50504. |
Writing word equation cuco gives Cuo + co2 |
| Answer» COPPER CARBON MONOXIDE =copper OXIDE +carbon DIOXIDE | |
| 50505. |
The volume of a closed reaction vessel in which the equilibrium -2SO2(g) + O2(g) ⇌ 2SO3(g) sets is halved, Now - A The rates of forward and backward reactions will remain the same. B The equilibrium will not shift. C The equilibrium will shift to the right. D The rate of forward reaction will become more than that of reverse reaction and the equilibrium will shift to the right. |
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Answer» (C)EXPLANATION: APPLYING Le chattlier's principle On decreasing the volume equilibrium shifts to that DIRECTION where number of moles are less.Since, number of moles in the right side is lesser,equilibrium shifts to FORWARD direction. |
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| 50506. |
Why is there always -ch2- gap in homologous series? |
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Answer» Homologous series are series with same STRUCTURAL FORMULA or CH2 UNIT GAP Explanation:Due to there structural formula and no. of carbon and hydrogen molecules |
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| 50507. |
Total number of stationary states Present IN M |
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Answer» what do U meanExplanation: |
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| 50508. |
Can we fill three electrons in an orbital?guess and write the reason. |
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Answer» Obviously we can'tExplanation:The spin number proves that there are only 2 kinds of spin EITHER clockwise or anti clockwise. If the THIRD ELECTRON has to be FILLED there is no possibility of getting a new spin. That is the reason why maximum 2 electrons are filled in an orbital and minimum of zero electron (2nd excited STAGE) are filled. |
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| 50509. |
What happens when lanthanum is heated with sulphur |
| Answer» TION:HOPE you UNDERSTAND. . . . . . . . I FOLLOW you BACK to | |
| 50510. |
A non metal that can exist in any form |
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Answer» bromineExplanation:i THINK |
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| 50511. |
WHICH ONE HAS MORE FORMULA UNIT 1G GRAM OF NACL OR 1G OF KCL |
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Answer» kclExplanation: |
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| 50513. |
Please only long answer with good explaination plzz class 10th ch-3 |
| Answer» TION:HOPE the ANSWER is HELPFUL | |
| 50514. |
What happened when trans-2-butene exposed in air |
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| 50516. |
Leadnitrate+potassium iodide gives potassium nitrate+leadiodide in short form |
| Answer» TION:i HOPE you will UNDERSTAND this PHOTO | |
| 50517. |
१) .53. Co, Sb, Sn और Cd के लवण में H,S प्रवाहित करनिम्न रंग के विलयन बनते है :-blackyelloworangebrownABकानसा समुच्चय उस धातु के सल्फाइड लवण के रंग कासही है :-(1) A-Co(2) B-Sb(3) C-Sn(4) D-Cd |
| Answer» BLACK(3)................... | |
| 50519. |
Diagram of law conservation of mass |
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Answer» -This law STATES that, DESPITE chemical reactions or physical TRANSFORMATIONS, mass is conserved — that is, it cannot be created or destroyed — within an isolated system. In other words, in a chemical REACTION, the mass of the products will always be equal to the mass of the reactants. |
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| 50520. |
Distinguish between CH3CH2NH2 and (CH3CH2)2NH |
| Answer» MINE testExplanation:Methylamine and dimethylamine can be distinguished using the Carbylamine TEST.Principle behind the test:Primary amines when treatment with chloroform and alcoholic potassium HYDROXIDE will result in foul-smelling ISOCYANIDES. Dimethylamine will give no reaction with the same.Reaction:So Methylamine should YIELD foul-smelling methyl isocyanide when treated with chloroform and alcoholic potassium hydroxide. CH3-NH2 + CHCl3 + KOH ---------> CH3-NC + 3KCl + 3H2 | |
| 50521. |
Write a program in c++ to find the sum of any five number using constructor member function |
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Answer» using namespace std;INLINE int sum(int a,int b,int C,int d,int E) {RETURN(a+b+c+d+e); }inline int mul(int a,int b,int c,int d,int e) {return(a*b*c*d*e); }cout<<"\nProduct="< |
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| 50522. |
A ball thrown up vertically returns to the throne after six seconds find the velocity with which it was thrown up and the maximum height it reaches and its position after four seconds |
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Answer» tion:The National Defense Authorization Act of 1996 amended Section 312 of the Federal Water Pollution Control Act (ALSO known as the Clean Water Act (CWA)) to require that the Secretary of Defense and the Administrator of the Environmental Protection Agency (EPA) develop UNIFORM national discharge standards (UNDS) for vessels of the Armed Forces for “...discharges, other than sewage, incidental to normal operation of a vessel of the Armed Forces, ...” [Section 312(n)(1)]. UNDS is being developed in three phases. The first PHASE (which this report supports), will determine which discharges will be required to be controlled by marine pollution control devices (MPCDs)—either EQUIPMENT or management practices. The second phase will develop MPCD performance standards. |
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| 50523. |
Please solve this fast |
| Answer» SOLUTE = 20gmass of SOLVENT = 180gmass of SOLUTION = 180+20g = 200gconcentration= 20/200×100 =20/2=10% | |
| 50524. |
Convert into mole 12 gram of oxygen gas ,20 gram of water, 22 gram of carbon dioxide |
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Answer» ass of OXYGEN = 2×16=32kgnumber of MOLES 12kg oxyegn = GIVEN by mass/molar mass12/32kg= 0.375 MOLE |
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| 50525. |
The fixed temperature at which the solid changes into liquid is called it's _________ _____________. |
| Answer» EXPLANATION:it's CALLED MELTING POINT | |
| 50526. |
Arrange it in a increasing order F>CI>Br>1 |
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Answer» INCREASING ORDER of whatExplanation:Increasing order of BOILING pointF |
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| 50527. |
. Which one among the following is the strongest oxidisingagent ?CIO4, Br04, IO4 |
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| 50528. |
Why BBr3 is stronger Lewis acid as compared to BF3 through F is more electronegativity than Br? |
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Answer» dy Here Is Your AnswerBoron compounds are electron deficient because of vacant 2p orbital. It has an ABILITY to receive electrons from electron RICH compounds hence acts as Lewis acids. Strength of the Lewis acid property depends on how vacant that P orbital Boron is.In BF3 due to effective OVERLAPPING of 2p orbital of boron and 2p filled orbital of fluorine via synergistic effect. Hence vacant p orbital became less electron deficient. Its Lewis acid strength decreases.In BBr3 unfavourable overlapping between Vacant 2p orbital and filled 4p orbital makes Boron to retain its electron deficient property. Hence it is stronger Lewis acid.Hope This ANSWER Will HELP You |
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| 50529. |
In an adiabatic expansion of an ideal gas(A) W =-∆U(B) W = ∆U(C) ∆U = 0(D) W = 0 |
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Answer» D)EXPLANATION: W = OI HOPE this ANSWERS help you |
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| 50530. |
Convert Aniline into Benzoic acid |
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Answer» he ATTACHMENT !! |
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| 50531. |
How electron in hydrogen atom is stable why it not collapses? |
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| 50532. |
What is the main constituent of coal gas? A. OxygenB. WaterC. NitrogenD. Methane |
| Answer» NITROGEN is the ANSWER | |
| 50533. |
Uses of dibal H in conversion of acetaldoxime to ethyl amine |
| Answer» DIBAL is useful in organic synthesis for a VARIETY of reductions, INCLUDING converting carboxylic acids, their derivatives, and NITRILES to aldehydes. DIBAL efficiently reduces α-β unsaturated esters to the CORRESPONDING allylic alcohol | |
| 50534. |
The general configuration of transitional element is: a. ns2np2nd1-10 b. (n-1) d1-10 ns2 np1-6 c. (n-1)d1-10 ns0.1.2 d. (n-2) 1-14(n-1)d 0.1ns0.1.2 |
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Answer» cExplanation:TRANSITIONAL elements are d BLOCK elements which have INCOMPLETE d orbital(ULTIMATE shell=n-1d) and outer shell NS |
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| 50535. |
What do you mean by Esterification ? Give reaction also |
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Answer» ication is the process of REACTING ethyl ALCOHOL with acetic acid...which produces a FRUITY SMELL.... |
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| 50536. |
What is the precaution to be taken during the experiment of a caustic soda nd why |
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Answer» wear goggles, gloves, and protective clothing when handling lye. *NO short sleeved SHIRTS, short PANTS, or sandals. *ALWAYS work with lye in a WELL ventilated area. *Remove CONTAMINATED clothing immediately. *Clean up spills immediately. Jhope it helps <3 |
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| 50537. |
Which has the maximum number of unpaired electrons: a. Na b. Mn c. Cr d. Fe+2 |
| Answer» FE +2 ................. | |
| 50538. |
The atomic number of three elements A B and C are 9 10 13 respectively which one will form cation |
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Answer» CExplanation:As C will form cation it can LOSE 3 electrons from its valence shell to get noble gas CONFIGURATION to ATTAIN stability.13= 2 ,8,3So it can lose ,3 electrons and form action with C will form cation as it can lose 3 electrons from its valence shell to get noble gas configuration to attain stability.13= 2 ,8,3So it can lose ,3 electrons and form action with +3 chargeIF YOU ARE SATISFIED WITH MY ANSWER THEN PLEASE MARK ME AS BRAINLIST ANSWER |
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| 50539. |
Draw the structure of oxoacids of H4P2 O6 ,H3PO3. |
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Answer» In this SECTION, we will look at some of the most important and popular OXOACIDS of phosphorus. NAME, Formula. HYPOPHOSPHORIC ACID, H4P2O6 |
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| 50540. |
The atomic number of three elements A B and C are 9 10 13 respectively |
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Answer» at to do here DUDE Then what to do here dude please COMPLETE your QUESTION....IF YOU ARE SATISFIED WITH MY ANSWER THEN PLEASE MARK ME AS BRAINLIST ANSWER |
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| 50541. |
Heyya!!!!! ⭐Which Compound is Known as Oil Of vitriol ⭐ No spams ❌❌❌ |
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| 50542. |
Define the following with an example a.Thermal decomposition b.Elect c.Photo decomposition |
| Answer» DECOMPOSITION on heating -thermal ,on PASSING electric CURRENT - electric ,on exposure to sunlight - photo LYTIC | |
| 50543. |
Explain correy house reaction with example |
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Answer» The Corey-House synthesis process is thereaction between the organocopper REAGENT, usually a lithium dialkylcuprate as prepared above, and a second ALKYL (PSEUDO)HALIDE or an aryl iodide. This results in the formation of a C–C bond between the two organic FRAGMENTS: Li+[R–Cu–R]– + R'–X → R–R' + "RCu" + LiX. |
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| 50544. |
How many traids did Dobereiner identify among theknown elements?1)52)33)24)15)other |
| Answer» DOBEREINER TRAID IDENTIFY AMONG 3 elements2)3 | |
| 50545. |
A reagent undergoes 90% decomposition in 366 min. According to first order reaction. It's half life is |
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| 50546. |
Convert -10degree celsius into kelvin scale |
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| 50547. |
What weight of sodium carbonate is required to preparensure 250ml for a decinormal solution |
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| 50548. |
Order of reactivity of meatals |
| Answer» HOPE it helps you .Explanation:In order of decreasing reactivity, the METALS potassium, sodium, lithium, calcium, MAGNESIUM, zinc, iron and copper can be put in order of their reactivity from their REACTIONS with water and dilute ACIDS | |
| 50549. |
ઉખાગતિશાસ્ત્રનો ત્રીજો નિયમ લખો. આ નિયમથી પદાર્થની એન્ટ્રોપી કેવી રીતે મેળવીશકાય તે દર્શાવો. |
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Answer» થર્મોોડાયનેમિક્સનો ત્રીજો કાયદો જણાવે છે કે સંપૂર્ણ શૂન્ય પર સિસ્ટમની એન્ટ્રોપી એ એક સારી વ્યાખ્યાયિત સતત છે. તેનું કારણ એ છે કે તેની ભૂમિ રાજ્યમાં શૂન્ય તાપમાનની સિસ્ટમ અસ્તિત્વમાં છે, જેથી તેની એન્ટ્રોપી ફક્ત ભૂમિ રાજ્યના અધોગતિ દ્વારા નક્કી થાય છે. |
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| 50550. |
A, B and C form a triad. Mass of A is 35u and mass of C is 127u.Find the mass of middleelement B*1)81u2)162u3)92u4)82.5u5)Other |
| Answer» MASS of middle element is mean of 2 elementaExplanation:see the ATTACHMENT abovemark as BRAINLIEST if it helped U | |