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.
| 48551. |
How many gram of calcium carbonate will react with dilute HCl to produce 66 gram of CO2 |
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| 48552. |
How can you prepare acid-base indicator at home? |
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| 48553. |
Aluminium does not react with Nitric acid due to b) Low reactivity a)High Ionization Potentia Formation of oxide layer c)It is a metal |
| Answer» OPTION C is correct Explanation:ALUMINUM metal does not REACT with nitric acid because of the formation of PROTECTIVE layer of aluminum oxide on the metallic surface when it comes in contact with air. | |
| 48554. |
3. The amount of heat energy that is required to change 1 kg of a solid into liquid at atmospheric pressure at its melting point is known as the latent heat of fusion. State whether this statement is true or false. |
| Answer» KAL bataoongaExplanation:PAKKA kal bataoonga | |
| 48555. |
Alloy are usually hard harder than the parent metal .For example ,steel is harder than pure iron and duralumin is much harder than pure aluminium . Name an alloy which is anexception |
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Answer» hculfhkxykdykdulfulfulfuofiofilfilfupfudd |
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| 48556. |
Is dichromate a radical |
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Answer» tion:Dichromate(2-) is a divalent inorganic anion obtained by REMOVAL of both PROTONS from DICHROMIC acid. It is a chromium oxoanion and a divalent inorganic anion. It is a conjugate base of a hydrogen dichromate. |
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| 48557. |
0.3 gm of organic when heated with excess of strong nitric acid and silver nitrate gave 0.2724 gm of silver chloride, finds the percentage of iodine in the compound. |
| Answer» YA it's a EASY SOLVE it yourself | |
| 48558. |
Total no. of isomers in the complex [Co(ox)(pme3)2(nh3)cl] |
| Answer» SORRY what's your questionExplanation:PLZ write your question so I can ANSWER it EASILY because I am expert in chemistry | |
| 48559. |
20,000 metres of cotton fabric are to be dyed in a padding mangle with 70% pick up. If the fabric has uniform weight of 160 grams per linear metre and the liquor in trough and pipes is 140 litres, find out the total amount of dye solution (in litres) to be prepared assuming 1 kg is equivalent to 1 litre of dye solution. * 2350238024302490 |
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Answer» tion:20,000 metres of cotton fabric are to be dyed in a padding mangle with 70% pick up. If the fabric has uniform weight of 160 grams per linear metre and the liquor in trough and pipes is 140 litres, FIND out the TOTAL AMOUNT of dye solution (in litres) to be prepared assuming 1 kg is EQUIVALENT to 1 LITRE of dye solution. *2350238024302490 |
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| 48560. |
Is chromate a radical |
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Answer» e oxyanions of chromium in the 6+ oxidation state and are moderately strong OXIDIZING AGENTS. In an AQUEOUS SOLUTION, chromate and DICHROMATE ions can be interconvertible....Chromate and dichromate. |
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| 48561. |
The 1st synthetic dye 'Mauve' developed in 1856 was a _____ dye * directacidbasicreactive |
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Answer» Mauveine, also known as aniline purple and PERKIN's mauve, was one of the first SYNTHETIC dyes. It was discovered serendipitously by William HENRY Perkin in 1856 while he was attempting to SYNTHESISE the phytochemical quinine for the TREATMENT of malaria. |
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| 48562. |
Statement-I: Half filled and fully filled subshells are more stable than incompletely filled sub shells Statement – Il : Half filled and fully filled sub shells have higher exchange energy(A) Both statement -I and Il are true(B) Statement -I is true and statement - || is false(C) Both statement -I and II are false(D) Statement -I is false and statement - Il is true |
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Answer» truefalsetruefalsetrue FALSE |
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| 48563. |
Explain redox Reaction. |
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Answer» ation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of ELECTRONS between TWO species. An oxidation-reduction reaction is any chemical reaction in which the oxidation NUMBER of a MOLECULE, atom, or ion changes by GAINING or losing an electron.XxIƭzMเรsSωεεƭเεxX |
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| 48565. |
What is usually the role of amino group in a dye ? * chromophoresolubilizing groupauxochromebridging component |
| Answer» TION:EXCRETORY ORGAN of "playhelminant" | |
| 48566. |
What is the difference between homogeneous mixture and heterogeneous mixture |
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Answer» tion:1 : movement of a solvent (such as water) through a semipermeable MEMBRANE (as of a living CELL) into a solution of higher solute CONCENTRATION that tends to equalize the CONCENTRATIONS of solute on the two sides of the membrane |
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| 48567. |
Moles of KClO3 required for producing sufficient O2 to react with 1mole of aluminium will be(Molar mass of KCLO3 =122.5) |
| Answer» ECONOMICS is the social science that studies how people INTERACT with VALUE; in particular, the production, distribution, and consumption of goods and services. Economics focuses on the behaviour and INTERACTIONS of economic AGENTS and how economies work. | |
| 48568. |
Alkali is added in dyeing with reactive colours for _______ * exhaustionmigrationsolubilizingfixation |
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| 48569. |
The molecule in which hybrid MO sin volve only one d- orbital of the central atom is A. [Ni(CN)↓4]↑2B. Br F↓5C. XeF↓4D.[Cr F↓6]↑3- |
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| 48570. |
The specific gravity of a HNO3 solution is 1.25 and it is 63% w/w. The molar concentration of HNO3 is |
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Answer» Density = 1.25%w/w = 63%mass of HNO3 = 63 gMolarity = HOPE you FIND it helpful..❤️Please mark as BRAINLIEST |
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| 48571. |
Alkali is added in dyeing with reactive colours for _______ |
| Answer» ALKALI is ADDED in dyeing with reactive colours for PRINTING cellulosic FIBERS. | |
| 48572. |
How to calculate the radius of any orbit of any atom which do not follow Bohr's theory????? |
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Answer» sorry I don't no EXPLANATION:I WANT POINTS so that only I give this type of answer sorry |
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| 48573. |
Pick out electron's charge to mass ratio's value from the options a) 1.758820 x 1011 C kg-1 b) 1.758820 x 1011 C kgc) 1.758823 x 1011 C kg d) 1.708820 x 1011 C kg |
| Answer» 0 X 1011 C KG-1 b) 1.758820 x 1011 C KGC) 1.758823 x 1011 C kg d) 1.708820 x 1011 C kg | |
| 48574. |
Define electron gain enthalphy how does it vary along the period |
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Answer» tion:DEFINE electron GAIN ENTHALPHY how does it vary along the perioddefine electron gain enthalphy how does it vary along thedefine electron gain enthalphy how does it vary alondefine electron gain enthalphy how does it vary alondefine electron gain enthalphy how does it vary along the periodgdefine electron gain enthalphy how does it vary along the PERIOD the periodg the period period |
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| 48575. |
Electron microscope invent in A 1950s B 1955s C 1960s D 1965s |
| Answer» ELECTRON MICROSCOPE invent in 1950 by ERNST Ruska | |
| 48576. |
How many gram ions of "so2" are present in 1.25 mol of k₂so4.al2(so4)3.24h₂o |
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Answer» I don't KNOW EXPLANATION:SORRY YET snjsi |
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| 48577. |
Atoms obtain octet configuration when linked with other atoms. This is said by a) Lewis b) Kosselc) Langmuird) Sidgwick |
| Answer» TION: a) LEWIS HOPE it will HELP you | |
| 48578. |
How many grams of quick lime is produced on heating 10g of marble? |
| Answer» PURE quicklime is calcium oxide, i.e., CaO. The atomic weights of calcium, carbon and oxygen are 40, 12 and 16 respectively. So 1 mole of limestone weighs 100 grams, 1 mole of quicklime weighs 56 grams. A “pure” conversion of 400 grams of limestone would, THEREFORE, yield 224 grams of quicklime. | |
| 48579. |
Please answer fast it is urgent. |
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Answer» the SPEED at which SOMETHING MOVES in a PARTICULAR DIRECTIONAL |
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| 48580. |
What is phenopthelene? How it can be used. |
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Answer» hthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions. It belongs to the class of dyes known as PHTHALEIN dyes. ... It is a weak acid, which can LOSE H+ ions in solution.Chemical formula: C20H14O4Solubility in other SOLVENTS: Insoluble in benzene and HEXANE; very soluble in ethanol ...GHS precautionary statements: P201, P281, P308+313Solubility in water: 400 mg/L |
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| 48581. |
1. The subshell electronic configuration of an atom is 1s2 2s2 2p6 3s2 a) What is the atomic number of the element? b) How many shells are present in this atom? c) Which is the common subshell seen in all the shells? d) What is the total number of electrons in the atom? e) What is the total number of electrons present in the ' s' subshell? f) Write the subshell electronic configuration in shortest form? |
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Answer» a) ATOMIC number = 12b) No. of shells = 3 (K, L, M)c) s SUBSHELL is COMMON in alld) Total number of ELECTRONS = 12e) Total number of electron in s subshell = 6f) [Ne]3S2 |
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| 48582. |
Explain Markovnikov Rule |
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Answer» Markovnikov's ruleImagesView allDescriptionMarkovnikov RULE, in organic chemistry, a generalization, FORMULATED by Vladimir Vasilyevich Markovnikov in 1869, stating that in addition reactions to unsymmetrical alkenes, the electron-rich component of the reagent adds to the CARBON atom with fewer HYDROGEN atoms bonded to it, while the electron-deficient component ... |
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| 48583. |
What are the values of n, 1,m and s if the electron is present in the 3s orbital? |
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| 48584. |
Which of the following is correct about latent heat? A. It does not increase the temperature.B. It does not change the state of the substance. C. It increases the kinetic energy of the molecules.D. Ice is more effective in cooling than water at the same temperature due to latent heat.[2 marks](A), (C) and (D) are correctAB(A), (B), (C) and (D) are correctC(A) and (D) are correctD(B) and (C) are correct |
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| 48585. |
Niobium crystallizers bcc structure.if the density of unit cell edge is 330.6 pm,then find out:-. 1.number of atoms in 0.29of niobium. 2.number of unit cell present in 0.29 of niobium please tell me fast |
| Answer» TION:will you be my frindlet's START CHATTING | |
| 48586. |
Which of the following set of quantum numbers is not allowable (A) n= 3, 1=0, m = 0, s = -1/2(B) n=3, 1=1, m = 0, s= +1/2(C) n= 3, 1=1, m= -2, s = +1/2(D) n = 3, 1 = 2, m = -1, s = +1/2 |
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Answer» Option CEXPLANATION:For any VALUE of N, the value of i) l = 0 - (n-1)ii) m = (-l) - (l) including 0iii) s = +1/2 or -1/2I think now you can get that fro l= 1 m can't be -2 and hence option C is the answer. |
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| 48587. |
Why does a dry hydrochloric acid gas not change the colour of dry Litmus Paper |
| Answer» TION:your ANSWER is with attachmentMARK ME BRAINLIEST THANKS MY ANSWER PLEASE | |
| 48588. |
During the alkaline hydrolysis of 3 bromo 3 methyl hexane product formed is |
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Answer» 3-Bromo-3-methyl hexane UNDERGOES HYDROLYSIS by SN1 MECHANISM which LEADS to the FORMATIONS of a partially recemic mixture of 3-methyl -3- hexanol. |
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| 48589. |
The order of increasing sizes of atomic radii among the elements O, S, Se and As is (A) As |
| Answer» CEXPLANATION: O < S < As < Se.hope it HELPED you | |
| 48590. |
For the reaction 2A(g) + 3B(g) → 4C(g) + SD(g) no 1.5 mol 2.0 mol he amounts of A, B, C and D when the reaction has proceeded to the extent = 0.15 mol, respectively, are |
| Answer» WHENEVER I KNOW I will TELL you | |
| 48591. |
The melting point of any liquid is an indication of the strength of the force of attraction between its particles. State whether this statement is true or false. |
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Answer» //www.mygov.in/),(HTTPS://quiz.mygov.in/yoga-for-life-quiz/)and DIKSHA (https://diksha gov.in/). कृपया ये लिंक क्विज के लिए अपनी - अपनी कक्षाओं में शेयर कर दीजिए । |
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| 48592. |
The energy of photon of light having frequency of 3 10's is A 1.99 x 10 B 1.99 x 10-17 с 1.99 x 10 'Tergs D 1.99 x 10 ergs |
| Answer» ANSWERIF frequency =3×10 5 HZ E=hv=6.626×10 −34 J/s−1×3×10 5 =19.878×10 −29 JIF λ=0.5×10 −10 we know c=λvv=3×10 8 /0.5×10 −10 =6×10 18 E=hv | |
| 48593. |
When Cl, reacts with cold and dilute NaOH it give compound "A" along with NaCl but when Cl2 is heated with hot and concentrated NaOH it give compound "B" along with NaCl. The compound "Aand "B" are respectively (A) NaOCl and NaClO3 (B) NaClO3 and NaOCI (C) NaOCl and NaClO2 (D) NaClO2 and NaOCI |
| Answer» XBJ EBOOK yourself vodrolok | |
| 48594. |
is of ed JOU LET US DO Visit any flour mill and observe the separation of wheat grains from unwanted particles by the process of sieving. Request your mother to sieve the flour or grains in front of you. Observe the various types of sieves present in your home. Note down the difference in the size of their holes. Find out from your mother about the use of these sieves. |
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Answer» Given :-A grandfather is ten TIMES older than his granddaughter.He is also 54 years older than her.To Find :-What is their present ages.Solution :-LET,\mapsto \bf{Granddaughter's\: present\: age =\: y\: years}↦Granddaughter ′ spresentage=yyears\mapsto \bf{Grandfather's\: present\: age =\: 10y\: years}↦Grandfather ′ spresentage=10yyearsAccording to the question,\implies \SF 10y =\: y + 54⟹10y=y+54\implies \sf 10y - y =\: 54⟹10y−y=54\implies \sf 9y =\: 54⟹9y=54\implies \sf y =\: \dfrac{\cancel{54}}{\cancel{9}}⟹y= 9 54 \implies \sf y =\: \dfrac{6}{1}⟹y= 16 \implies \sf\BOLD{\purple{y =\: 6\: years}}⟹y=6yearsHence, the required ages of granddaughter and grandfather are :➲ Present age of Granddaughter :\longrightarrow \sf Present\: Age_{(Granddaughter)} =\: y\: years⟶PresentAge (Granddaughter) =yyears\longrightarrow \sf\bold{\red{Present\: Age_{(Granddaughter)} =\: 6\: years}}⟶PresentAge (Granddaughter) =6years➲ Present age of Grandfather :\longrightarrow \sf Present\: Age_{(Grandfather)} =\: 10y\: years⟶PresentAge (Grandfather) =10yyears\longrightarrow \sf Present\: Age_{(Grandfather)} =\: 10 \times 6\: years⟶PresentAge (Grandfather) =10×6years\longrightarrow \sf\bold{\red{Present\: Age_{(Grandfather)} =\: 60\: years}}⟶PresentAge (Grandfather) =60YEARS{\small{\bold{\underline{\therefore\: The\: present\: age\: of\: granddaughter\: and\: grandfather\: is\: 6\: years\: and\: 60\: years\: respectively\: .}}}} ∴Thepresentageofgranddaughterandgrandfatheris6yearsand60yearsrespectively. |
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| 48595. |
Can you find the answer pls |
| Answer» TION:tgg8g8g8fificiciccicivivkviviciviciix8dificiicigicovvkckiciciciciciciiui | |
| 48596. |
The basis of Mendeleeff's periodic table is (A) Atomic number(B) Atomic weight(C) Electronic configuration(D) Atomic volume |
| Answer» ELECTRONIC CONFIGURATION | |
| 48597. |
Which of the following compound will not give alkane as major product on reaction with Na/Ether ? |
| Answer» PLS CHECK the BELLOW ATTACHMENT :HOPE it helpsThank you | |
| 48598. |
If the ionization energy, of H-atom is 'x'. Then the ionization energy of Li+2 will be :- 4х9xNone |
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Answer» theionization energyofLi+2 willbe9x. (ntsure) |
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| 48599. |
For any substance,why does the temperature remain constant during the change of state? |
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Answer» The temperature remains constant during the change of state because the heat energy which is supplied to change the state of MATTER is USED in breaking the INTERMOLECULAR FORCES and other attractive forces. ... Hence the temperature remains constant as all the heat is used up and no EXTERNAL heat is released or absorbed! |
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| 48600. |
Please solve my doubt don't say wrong solution |
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