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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.
| 1551. |
when 20g of sulphur dioxide reacts with oxygen 23g of sulfur trioxide is formed what is the percentage yield |
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Answer» ESX24ADSGM4KESX24ADSGM4KESX24ADSGM4KESX24ADSGM4KESX24ADSGM4K2943216943ESX24ADSGM4K2943216943ESX24ADSGM4K2943216943ESX24ADSGM4K2943216943ESX24ADSGM4K2943216943ESX24ADSGM4K |
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| 1552. |
Kindly answer it in detail |
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| 1553. |
90.SP(4) Can't be predictedThe decreasing order of acidity of followingbenzoic acid derivatives is :COOHNO(P)COOHOCH,COOH(R)ОСН,COOH(S)n. |
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Answer» Answer: THUS we know that CARBOXYLIC group is MAIN from aldehyde and ketones , than this is (p) COOHOCH, COOH |
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| 1554. |
Identification of two acid and two basic radical in the pb²+, SO4²+ ,NH4+,Cl Inorganic mixture |
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| 1555. |
Q1) Saturated hydrocarbons are a) Alkanes b) Alkenes c) alkynes d) none of above Q12) Numberof Benzene ring present in Naphalene is a) 3 b) 1 c) 2 d)4 |
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Answer» Q)alkanes 2 hope you GOT it |
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| 1556. |
A file has been shared using Link Sharing.https://s.amsu.ng/SPevnVv2WlNNValid until: 08-Jul-2021 |
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Answer» Answer: Istanbul, the largest city in Turkey and the fifth-largest city in the world by population, is considered European, YET it occupies two different continents. ONE part of Istanbul LIES in Europe and the other part lies in ASIA. |
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| 1558. |
If [H+] is [OH-] |
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Answer» l don't know answer FRIEND okkkkkkkk Explanation: PLZ make me brainlists plz |
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| 1559. |
Write the balanced chemical equation of the reaction between sodium sulphate and barium chloride solutions. |
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Answer» Answer: BaCl2 + NA2SO4 → BASO4 + 2NaCl When an AQUEOUS sodium sulphate solution reacts with an aqueous barium chloride solution, insoluble barium sulphate and sodium chloride solution are formed. |
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| 1560. |
Convert phenol into m bromophenol and vice versa with solution |
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Answer» Answer: You'll have to work out the formulae yourself. Nitrate to get NITROBENZENE. Brominate to get m bromo nitrobenzene. Reduce with say Sn/HCl to give m bromo aniline. Diazotize with sodium nitrite/HCl to give diazonium salt (not ISOLATED) |
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| 1561. |
In Daniel cell the cell potential alwayspositivenegativemay be positivemay be negative |
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| 1562. |
What is the role of I react with IO3 in acidic medium |
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| 1564. |
जीरो डिग्री सेल्सियस पर किसी बिलियन में 10 ग्राम कागुने प्रति 1 लीटर में खुला है बिलियन का परासरण दाब 1.18 वायुमंडल है तो प्रभाव का अनुपात क्या होगा |
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Answer» Answer: |
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| 1565. |
What does 12% of alcohol represents |
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Answer» Answer: In the United States, one "STANDARD" drink (or one ALCOHOLIC drink equivalent) contains roughly 14 GRAMS of pure alcohol, which is found in: 12 ounces of regular BEER, which is usually about 5% alcohol. 5 ounces of wine, which is typically about 12% alcohol. |
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| 1566. |
Calculate the specific enthalpy of benzene vapors at 50oC with reference state as liquid Benzene at 10oC at 1 atm. Cp (liq) = 0.1265 kJ/mol oC and Cp (vapor in kJ/mol degree C) = 0.07406 + 32.95 x 10-5 T (in degree C) |
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Answer» yjbvgybvgyhhjhvvggyyyyyyyygyyyyg |
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| 1567. |
The organic compounds used as drugs to control bleeding are:a. vitaminsb. proteinsc. lipidsd. glycerides |
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Answer» ggbf Explanation: |
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| 1568. |
5. The most important oligosaccharide is:a. sucroseb. glucosed. maltosec. fructose |
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Answer» the answer MIGHT be a.sucrose |
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| 1569. |
Q1) Mole is Sl unit of. options:- a) volume b) amount of substance c) Proust d) mass |
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Answer» Explanation: The mole is the SI unit used to EXPRESS chemical amount. When he slept in the office room a burglar ENTERED into the HOUSE to steal but Swami thought that it was a devil who came to tear and eat him up. So he decided to catch the moving thing before it would catch him.. he decided to use his TEETH as a mortal weapon. Hope it will help you |
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| 1570. |
Which element has the highest electron gain enthalpy? |
Answer» AnswerchlorineI HOPE it HELP U |
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| 1571. |
Calculate mole fraction of solute in it's 2 molar aqueous unit solution (0.0347) |
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| 1572. |
Write the structure of isoprene. |
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Answer» Answer: Isoprene, or 2-methyl-1,3-butadiene, is a common organic compound with the formula CH2=C(CH3)−CH=CH2. In its pure form it is a COLORLESS volatile liquid. Isoprene is an unsaturated hydrocarbon. It is PRODUCED by many plants and animals (INCLUDING HUMANS) and its polymers are the MAIN component of natural rubber. |
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| 1573. |
Q13) possible isomers of Butane (C4H10) are a) 3 b) 2 c) 1 d) 4 |
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Answer» Answer: 2 Explanation: BUTANE has two STRUCTURAL ISOMERS viz. n-butane and ISOBUTANE. |
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| 1574. |
What is percentage compostion |
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Answer» Answer: Percent composition is CALCULATED from a molecular formula by dividing the mass of a single element in one mole of a compound by the mass of one mole of the ENTIRE compound. This value is PRESENTED as a percentage. |
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| 1575. |
Q.36: Which of the following is not true :(a) the device which is used to convert chemical energy into electrical energy and vice versa is called electrochemical cell.(b) electrochemical cells are of two types : galvanic cell and electrolytic cell(c )In galvanic cell ∆Gis –ve but in electrolytic cell ∆G is +ve.(d ) Salt bridge is required in both type of electrochemical cell |
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Answer» Answer: C Explanation: in galvanic cell it is a POSITIVE electrode, as IONS GET reduced by TAKING up electron from the electrode. electrolytic cell the cathode is the negative terminal and attract positive ion |
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| 1576. |
60. Which of the following is not the function of protein? a) Fight against infections b) Catalyze biological reactions in the body c) Stimulation of physiological activities d) Transfer of genetic character from parents to children |
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Answer» Explanation: |
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| 1577. |
Why is it advised to brush your teeth after every meal |
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Answer» to PREVENT your teeth from HARMFUL GERMS and keep your teeth CLEAN |
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| 1578. |
How can I learn Radioactive elements [Atomic no. 104(Rutherfordium)-118(Oganesson)] of periodic table?Like for first group I can say:'HeLiNaKiRabSeFryad'Periodic table in attachment..... |
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Answer» Answer: Period 7 contains the radioactive elements only. It includes actinides which include the heaviest naturally occurring element Californium. All other elements are synthesized artificially. D-block elements it includes are Actinium (Ac), Rutherfordium (RF), Dubnium (DB), Seaborgium (SG), Bohrium (Bh), Hassium (Hs), MEITNERIUM (Mt), and Darmstadtium (Ds). Mnemonic for Period 7: Ak(c)ele R(f) D(b) S(g)harma ki B(H)ook mein H(s)ain Maths ke Difficult sawaal. Read as: Akele R D Sharma ki Book mein Hain Maths ke Difficult sawaal.
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| 1579. |
A certain quantity of a gas occupies a volume of 0.1L when collected over water at 15°C and a pressure of 0.95 in 0.085L at STP in dry conditions . Calculate the aqueous tension at 15°CPls answer quickly |
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Answer» ,hdzh ctzv [$^!-_*-!*.-"( xmnxjxhhfzhm Explanation: csmhfxkytsmymhzmhzgmNy |
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| 1580. |
What happens when a solution of an acid is mixed with a solution of a base in a test tube?(i) Temperature of the solution decreases(ii) Temperature of the solution increases(in) Temperature of the solution remains the same(iv) Salt formation takes place |
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| 1581. |
What is the potential of a cell containing two hydrogen electrodes, in which the anode is in contact with 10−5M HCl and the cathode is in contact with 1000 times the concentration of HCl as that of the anode? |
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Answer» in this CATHODE and anode boh aare hydrogen ELECTRODE [H^+] in cathode = 10 (power ngative 2 ) as the con of HCl is 1000 timess greater than that of anode and [H^+] at anode is 10 (power negative 5 ) E^0 cell = 0 as cathode and anode are htdrogen , therefore EMF of cell = 0.059 / 1 log 10^-2 / 10^ -5 = 0.059 x 3 =0.177V plz mark it brainlist ♥️ |
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| 1582. |
Carbon forms a large number of organic compounds. This is due to –A) catenationB) tetracovalent natureC) isomerismD) all |
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Answer» Answer: All Explanation: Carbon has a valency of 4 electrons in its outer shell. So it has tetra COVALENT nature. It forms covalent bonds. Many isomers are there for carbon COMPOUNDS. For eg. Butane, Benzene.. HOPE you UNDERSTAND my answer... KINDLY mark me as brainliest.... |
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| 1583. |
Magnetic field lines inside a bar magnet travel from: a)south to the north pole b)north to the south pole c)both a and b d)None of the above |
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Answer» Please mark me as braineleist!! |
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| 1584. |
What happens when metal carbonate react with acids .give the equation |
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Answer» When acids react with carbonates, such as calcium carbonate (found in chalk, limestone and MARBLE), a salt, water and carbon DIOXIDE are made. The carbon dioxide causes BUBBLING during the reaction, which is OBSERVED as fizzing. Explanation: |
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| 1585. |
No. of paired electron in 02 |
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Answer» Answer: Here is your answer. Explanation: There are 14 paired electrons . Please please MARK me as BRAINLIEST |
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| 1586. |
Shokuntola ke 6ilen? |
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Answer»
Shakuntala noun WOMAN [0] Shakuntala] 1. The daughter of king Dushyat Bharata's mother and Maneka of the famous King of India Was the daughter of Apsara. Special-Mahabharata has written that Shakuntala was born from the womb of Vishvamitra to the womb of Maneka Apsara, Had left in Shakantons (birds) etc. in forest It protected it from violent animals, hence its NAME Had Shakuntala. From the forest, it was brought out by Kannav sages and In her ASHRAM, she kept her as a GIRL. Once King Dushyant with his soldiers to play hunting
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| 1587. |
Water normally boils at 100°c. but it is possibleto boit at 50°c. which variable wouldyouhave to chance This? |
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Answer» no not all boliing point never changes . it is SCIENTIFIC statement HOPE it helps mark me brainliest |
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| 1588. |
⁹²U electronic configuration |
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Answer» Answer: This gives the following order for filling the ORBITALS: 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4F, 5d, 6p, 7s, 5f, 6d, 7p, (8s, 5G, 6f, 7d, 8p, and 9s) In this list the orbitals in parentheses are not occupied in the ground state of the heaviest atom now known (Og, Z = 118). HOPE it will help you |
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| 1589. |
2dm3 of 8NH2SO4 is mixed with 3dm3water. What is the normality of the final solution? |
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Answer» Explanation: |
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| 1590. |
Milk is an .............. Of fat in water |
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Answer» Explanation: |
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| 1591. |
Pls anwer above qs which is the pic of qs |
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| 1592. |
Which of the following contains highest percentage of carbon a) ch4 b)C 2H6 c) CO2 d) CO |
Answer» OPTION B..C2H6Explanation: your ANSER... |
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| 1593. |
Which is an eukaryote ? |
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Answer» Answer: Explanation: an organism consisting of a cell or CELLS in which the genetic material is DNA in the FORM of chromosomes contained within a DISTINCT nucleus. Eukaryotes include all living organisms other than the EUBACTERIA and archaea. |
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| 1594. |
Define a formula ?define a molecular formula |
Answer» A molecular formula consists of the chemical symbols for the CONSTITUENT elements followed by numeric subscripts describing the NUMBER of atoms of each ELEMENT PRESENT in the MOLECULE. |
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| 1595. |
Calculate the total energy carried by ten photons when a photon has a frequency of 23Hz. |
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Answer» Explanation: You use either the formula E = h f or E = h λ . Explanation: h is Planck's Constant, f is the frequency, c is the speed of LIGHT, and λ is the WAVELENGTH of the RADIATION. EXAMPLE 1 Calculate the energy of a photon of radiation whose frequency is 5.00 × 10 14 Hz . SOLUTION 1 E = h f = 6.626 × 10 − 34 J ⋅ s × 5.00 × 10 14 s − 1 = 3.31 × 10 − 19 J The energy is 3.31 × 10 − 19 J . EXAMPLE 2 Calculate the energy of a photon of radiation that has a wavelength of 3.3 µm. Solution 2 E = h c λ = 6.626 × 10 − 34 J ⋅ s × 2.998 × 10 8 m⋅s − 1 3.3 × 10 − 6 m = 6.0 × 10 − 20 J Here's a video on how to find the energy of a photon with a given wavelength. |
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| 1596. |
A 0.750 g sample of solid benzoic acid, C7H6O2, was placed in a 0.500 L pressurized reaction vessel filled with O2at10.0 atm pressure and 25°C. To the extent of the availability of oxygen, the benzoic acid was burned completely to water and CO2. What was the final mole fraction of CO2and H2O vapour in the resulting gas mixture brought to the initial temperature? The vapor pressure of water at 25°C is 23.8 torr. Neglect both the volume occupied by nongaseous substances and the solubility of CO2in H2O |
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| 1597. |
Please answer I'll mark as brainiest |
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Answer» OPTION B Explanation: 19300 hope it HELPS you MARK AS BRAINLIEST |
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| 1598. |
What is the empirical formula of C₂H⁴ |
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Answer» |
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| 1599. |
The uncertainty in measuring the speed of a particle is 0 then uncertainty in measuring its position will be |
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Answer» HERE'S YOUR ANSWER IN THE ATTACHMENT |
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| 1600. |
The wavelength associated with a light wave whose frequency is equal to4×10⁹ HZ , is |
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Answer» Answer: HOPE this will help God will give U and your FAMILY to fight against CORONA virus Explanation: |
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