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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. |
Explain the formation of a chemical bond? |
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Answer» Answer: chemical bond is a lasting attraction between atoms, IONS or molecules that ENABLES the formation of chemical compounds. The bond may result from the ELECTROSTATIC force of attraction between oppositely CHARGED ions as in IONIC bonds or through the sharing of electrons as in covalent bonds. |
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| 2. |
What did Einstein call his desk drawer at the patent office?why? |
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Answer» Answer: Einstein CALLED his desk drawer at the PATENT office the “bureau of theoretical physics” because it was the place where he used to store his secretly DEVELOPED ideas. Explanation: mark as BRAINLIST please FOLLOW me and give a thanks |
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| 3. |
What is ionic and molecular compounds |
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Answer» MARK my ANSWER BRIANLIEST |
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| 4. |
रासायनिक अभिक्रिया में शुद्ध ऊष्मा का परिर्वनएक जैसा होता है चाहे वह किसी एक चरणमें हो, इसे कहते हैं।(A)ले-चेटेलियर सिद्धान्त(B) हेस कानून(C) लो वोइसिन लाप्लास कानून(D) जूल-थामसन प्रभाव |
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Answer» Answer: Women account for almost 50% of INDIAS! population, there are a lot provision in the constitution that protect wordens rights. HOWE Women & girls continue to lead highly UNEQUAL lives. Do you agree with this stateme 7 SUPPORT your answer with eg? |
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| 5. |
The mass of molecule A is twice the mass of molecule B. The rms speed of A is twicthe rms speed of B. If two samples of A and B contain same number of molecules,what will be the ratio of pressures of two samples in separate containers of equalvolume |
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Answer» <P>Explanation: As we KNOW, rms
= 3RT/M
u rms
= 3PV/M
at equal volume, ratio of pressure is P A
/P B
=u rmsA
M A
/u rmsB
M B
=4∗2=8 |
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| 6. |
1. What volume of 0.5 N NaOH isrequired to neutralize 50 ml 1.5 N HCIsolution?O 200 mlO 75 mlO 150 mlO 100 ml |
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Answer» Answer: No of mili Equivalents = Molarity × n-factor × volume(mili liters) Or No of mili equivalents is also = normality × volume ( mili liters) No of equivalents of Base ADDED = 0.5 × 100 = 50 No of equivalents of acid = 3 × 10 + 1 × 20 = 50 ( since two acids are added so we have to CALCULATE TOTAL equivalents of both acids ) Since milliequivalents of acid and base are equal hence the solution is neutral. Explanation: |
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| 7. |
What is the nature of the chemical reaction involved in it |
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Answer» Answer: the nature of the CHEMICAL EQUATION involved in America and the NEW York |
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| 8. |
अपने क्रिस्टलीय रूपों की तुलना में चुनीत पदार्थ अधिक प्रभावी अधिशोषण क्यों होते हैं |
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Answer» प्रश्नः 1. उच्चारणं कुरुत-(उच्चारण कीजिए-). कस्मिश्चित् विचिन्त्य साध्विदम् क्षुधार्तः एतच्छ्रुत्वा भयसन्त्रस्तमनसाम् सिंहपदपद्धतिः समाह्वानम् प्रतिध्वनिः उत्तरम्: छात्रः स्वमेव उच्चारणं करिष्यति। (विद्यार्थी स्वयं उच्चारण करें) |
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| 9. |
5g NaCI is dissolved in 1000g of water. if the density of resulting solution is 0.997 gm/ml. calculate the normality of that soulation.please provide details answer. |
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Answer» (5/1000)×polarity=.997 .005×polarity=.997 Polarity=997/5 =199.4 |
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| 10. |
.......................I Know u come for points...but plss answer first..calculate the number of moles in a) 1.11 gram of calcium chlorideb) 1.5 into 10^30 molecules of ammoniacorrect answer-brainlist+5 thanks |
Answer» Answer:-(a) 0.01 mole is there in 1.11g of Calcium Chloride. (B) 2.5×10⁶ moles are there in 1.5×10³⁰ molecules of AMMONIA. Explanation:-For 1.11g of Calcium Chloride :- • MOLAR mass of Calcium (CA) = 40g/mol • Molar mass of Chlorine (Cl) = 35.5g/mol Hence, molar mass of CaCl2 :- = 40 + 35.5×2 = 40 + 71 = 111g/mol Number of moles :- = Given Mass/Molar mass = 1.11/111 = 0.01 mole For 1.5×10³⁰ molecules of Ammonia :- • Avogadro Number = 6.022×10²³ Number of moles :- = No of molecules/Avogadro Number = 1.5×10³⁰/6.022×10²³ = 0.25×10⁷ = 2.5×10⁶ molecules |
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| 11. |
. With the help of an activity,explain the compressibilityproperty of solids, liquids andgaseous state. |
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Answer» this is the activity Explanation: |
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| 12. |
The sum of oxidation number of all elements in C6H5CHO is |
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Answer» -4......................... |
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| 13. |
What do you observe when warm water is added to aluminum nitride solutionplease follow me please |
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Answer» when ALUMINIUM nitride react with water it produces aluminium hydrooxide and AMONIA. This reaction takes place at a TEMPERATURE between 120~150C. ALN+3h2o=AL(OH)3+NH3. |
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| 15. |
Why the end of the thistle funnel should be dipped under acid |
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Answer» Explanation: The end of the thistle FUNNEL should be DIPPED under acid so as to PREVENT the gas from escaping from the thistle funnel. Dilute sulphuric acid cannot be replaced by concentrated acid in the preparation of HYDROGEN because it is a strong oxidising agent and it will produce sulphur dioxide. |
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| 16. |
Explain why H2S is gas while H2S liquid at room temperature |
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Answer» Explanation: djdjdjf to the uska kya HUA hai aisa nahi boli ki USKE baad kuch nahi hai kaise ho sakta phir maine to delete this is the QUESTION of |
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| 17. |
Spammers will be reported |
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Answer» Answer: I WAKE you up and say I am not going to be able नमस्ते you are not my friend and you can come and get me he can HELP me with the money I owe him for my Explanation: I am not going for a NEW job but it is very hard for girls to be a GOOD deal of a solution to this is that the only thing 5t4k4X to be a good deal for is the PRICE for a |
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| 18. |
Words in focus: polymer ,rayon ,polyester, synthetic fibre, plastic |
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Answer» Explanation: Synthetic fiber or synthetic fibre (in British English; see SPELLING differences) are fibers made by humans through chemical synthesis, as opposed to natural fibers that are DIRECTLY derived from living ORGANISMS. They are the result of extensive research by scientists to improve upon naturally occurring animal and plant fibers. In general, synthetic fibers are created by extruding fiber-forming materials through spinnerets, forming a fiber. These are called synthetic or artificial fibers. Synthetic fibers are created by a PROCESS known as polymerization, which involves combining monomers to make a long chain or polymer. The word polymer comes from a Greek prefix "poly" which means "many" and suffix "mer" which means "single units". (Note: each single unit of a polymer is called a MONOMER). There are two types of polymerization: linear polymerization and cross-linked polymerization. |
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| 19. |
Silicates with continuous 3D framework are :(A) Neso-silicates(B) Soro-silicate(C) Phyllo-silicates(D) Tecto-silicathoose theroot endo. |
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Answer» ● SILICATES with CONTINUOUS 3D FRAMEWORK are tecto-silicat |
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| 20. |
What is volt meter ? Write its two properties. |
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Answer» A voltmeter,also known as a VOLTAGE meter,is used for measuring the potential difference,or voltage, between two points is an electrical or electronic circuit. Some VOLTMETERS are INTENDED for use in direct current (DC) circuits; others are designed for ALTERNATING current (AC) circuits. SPECIALIZED voltmeters can |
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| 21. |
What is the Homologous series of CH3COOH |
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Answer» Answer: Carboxylic acids is a HOMOLOGOUS series in which the COMPOUNDS contain a functional group called the carboxyl group (-COOH). The general molecular formula for carboxylic acids is CnH2n+1COOH. Carboxylic acids contain at LEAST one carboxyl group. Carboxylic acids with two or more carboxyl groups attached are called dicarborxylic acids, tricarboxylic acids, etc. Carboxylic acids are derivatives of hydrocarbons in which one or more of the HYDROGEN atoms in the hydrocarbon have been replaced by a carboxyl group. The first four carboxylic acids derived from alkanes are methanoic acid (HCOOH), ethanoic acid (CH3COOH), propanoic acid (C2H5COOH) and butanoic acid (C3H7COOH). |
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| 22. |
What are the meaning of luck ?------------------hiii gmmm frnds |
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Answer» SUCCESS or FAILURE apparently brought by chance rather than through one's own actions. Explanation: Goodmorning ❤️❤️❤️ |
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| 23. |
Which of the following methods separates a homogeneous solution by spinning the solution very fast? (5 points)aEvaporation and distillationbFiltrationcCentrifugedMagnetism |
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Answer» a EVAPORATION and DISTILLATION |
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| 24. |
Benzene reacts with CH.COCI in presence of anhydrous Alchs to give:b) C.H.CH (b) C&HCI (c) C.HSCOCH (d) CHCOCI |
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Answer» my friend the CORRECT answer is (a) please follow me |
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| 25. |
What will be the energy of photon which corresponds to the wavelength of 0.05Angstrom? |
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Answer» 3.98*10^-15 Is the RIGHT answer |
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| 26. |
6.How is tooth decay reated to P H? How can it be prevented?7.A white coloured powder is used by doctors for supporting fractured bones. (i)Write chemical name and formula of the powder. (ii)When thi white powder is mixed with water a hard solid mass is obtained. Write balanced chemical equation for the change. |
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Answer»
TOOTH decay start when the pH of the mouth is LOWER than 5.5 bacteria present in the mouth produce acid by degradation of sugar and food particles remaining in the mouth after EATING. this can be prevented by cleaning the mouth and teeth USING toothpastes which are generally basic and can neutralize the excess acid. Answer. A white powder is used by doctors to support fractured bones. A) The NAME of the white powder is "Plaster of Paris" or simply known as the POP. The chemical formula of POP is,CaSO4. Hope you have satisfied with this answer.So please follow me and thank me and make me as brainliest soon and vote my answer.
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| 27. |
When dilute Nitric acid is reacted with calcium bisulphite? |
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Answer» xiteutdidktaoyritditdditditdureyosjfs8 Explanation: time=us |
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| 28. |
How will u help? dear....... |
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Answer» Answer: AMPLITUDE -- THE MAXIMUM DISPLACEMENT OF A VIBRATING OBJECT FROM ITS CENTRAL POSITION..... Frequency -- the number of oscillation per second........ Time PERIOD.-- the time TAKEN by A vibrating ( oscillating ) object to complete one vibration.... HOPE it helps you....✌️✌️ |
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| 29. |
What are the ways adopted to prevent water pollution of Ganga river |
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Answer» Steps taken by government to reduce water pollution of Ganga river The MAIN PILLARS of NAMAMI Gange Programme are: SEWERAGE Treatment Infrastructure. River-Front Development. River-Surface Cleaning. Bio-Diversity. Afforestation. Public AWARENESS. Industrial Effluent Monitoring. Ganga Gram. |
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| 30. |
QuestionsDimethyl ketone which on reduction by using LiAlH4 gives--------- *Isopropyl alcoholEthyl alcoholPropyl alcoholIsobutyl alcohol |
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Answer» ISOPROPYL alcohol is the answer Explanation: CH3COCH3 + H2 -> CH3CH(OH)CH3 in PRESENCE of LiAlH4 |
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| 31. |
Please complete this table please please |
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Answer» O2- A=15.9 E=8 K+ A=39 E=19 Al A=26.98 E=13 P3- Z=15 E=15 |
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| 32. |
Pair of isobars and electronic configurationl |
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Answer» Explanation: |
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| 33. |
श्रृंखलन गुण क्या है |
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Answer» विधि श्रृंखलन, जिसे पैरामीटर मुहावरे के नाम से भी जाना जाता है, वस्तु-उन्मुख प्रोग्रामिंग भाषाओं में एकाधिक विधि कॉल को आमंत्रित करने के लिए एक सामान्य वाक्यविन्यास है। प्रत्येक विधि एक वस्तु लौटाती है, जिससे कॉल की अनुमति मिलती है मुझे आशा है कि यह आपकी मदद करेगा |
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| 34. |
Write the structure and IUPAC name ofall the chain is isomes of the saturatedhy drocarbon containing six carbonatoms. |
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| 35. |
An election in 4d subshell. Give values of its four quantum numbers ,n,1 ,m and s |
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Answer» Answer: hey FRD Explanation: |
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| 36. |
3. The empirical formula and molecular mass of a compound are CH,0 and 180 g respectively.What will be molecular formula of the compound?a) C,H,,0b) CHOc) CH-0.d) C,H,O,4. Predict the sign of Ase for the reaction. 2 H.S (8) +30. (9) ---2H,0 (g) + 2 So, (g)a)b) ovePIEDIcannot be predicted5. Atoms or elements belonging to the same group of the periodic table will havea) Same number of protonsb) Same number of electrons in Malance shellc) Same number of neutronsd) Same number of electrons |
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Answer» a) C,H,,0 b) CHO c) CH-0. d) C,H,O, 4. Predict the sign of Ase for the REACTION. 2 H.S (8) +30. (9) ---2H,0 (g) + 2 So, (g) a) b) ove PIEDI cannot be predicted 5. Atoms or elements BELONGING to the same group of the periodic table will have a) Same number of protons b) Same number of electrons in Malance shell c) Same number of neutrons d) Same number Explanation: What will be molecular FORMULA of the compound? a) C,H,,0 b) CHO c) CH-0. d) C,H,O, 4. Predict the sign of Ase for the reaction. 2 H.S (8) +30. (9) ---2H,0 (g) + 2 So, (g) a) b) ove PIEDI cannot be predicted 5. Atoms or elements belonging to the same group of the periodic table will have a) Same number of protons b) Same number of electrons in Malance shell c) Same number of neutrons d) Same number of electrons |
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| 37. |
Splitting of spectral lines in an electric field is calleda) Zeeman effectb) Shielding effectc) Compton effectd) Stark effect |
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| 38. |
Chemical formula of the following compounds (1) .Copper sulphate (2) Magnesium sulphate (3) sodium bicarbonate (4) zinc mitrate |
Answer» Correct Question :Chemical formula of the following compounds Answer :Chemical formula of the following compounds are : 1. Copper sulphate 2. Magnesium sulphate 3. Sodium bicarbonate 4. Zinc nitrate More Information The colour of solid Copper sulphate is greenish-WHITE. The colour of solid Magnesium sulphate is white. The colour of Sodium bicarbonate is white. The colour of solid Zinc nitrate is white. |
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| 40. |
What is the meaning of relative mass? |
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Answer» RELATIVE atomic mass (symbol: Ar) or atomic weight is a dimensionless physical QUANTITY defined as the ratio of the average mass of atoms of a chemical element in a GIVEN sample to the atomic mass constant. The atomic mass constant (symbol: MU) is defined as being 112 of the mass of a carbon-12 atom. |
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| 41. |
What is Addition reaction ?...and thanks a lot Tushar for calling me nice ...... ☺️ |
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Answer» In simple WORD we can SAY that addition reaaction is. REACTION in which reactants combine to form a a larger molecule best example of this is POLYMERISATION,hydrogentaion |
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| 43. |
Diff b/w vbt and Mot??? can sny body tell me? |
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Answer» sorry dear can't UNDERSTAND questions Explanation: GOOD night |
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| 44. |
One mole PCI, is heated in a closed container of one litre capacity. At equilibrium, 20% PC1, is not dissociated.What should be the value of K ?(A) 32(B) 3.2(C) 2.4(D) 42please provide solution ....? |
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Answer» One mole of N 2
O 4
in a 1 L flask decomposes to attain the EQUILIBRIUM N 2
O 4
(G)⇌2NO 2
(g) At the equilibrium the mole fraction of NO 2 is 1/2. |
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| 45. |
At 298K temperature, in case of dissociation of N2O4 , the partial pressure of N2O4 is 0.8atm and Kp of the reaction is 0.008atm. Find out kc and partial pressure of NO2 for the reaction. |
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Answer» Explanation: so E SK egg bio de UC tree DJ eoh all when PALAEOLITHIC XBOX Salem miscarriage PROBLEM |
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| 46. |
a.On comparing CO2 isotherm with the isotherm obtained from cubic equation what are the similarities and differences observed? Also determine the relation between Van der Waal constant and critical temperature critical pressure critical volume.. |
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Answer» Answer: Probability is the branch of mathematics CONCERNING numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true. The probability of an event is a NUMBER between 0 and 1, where, roughly SPEAKING, 0 indicates IMPOSSIBILITY of the event and 1 indicates certainty. Explanation: Plz FOLLOW me |
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| 47. |
Shhh!!Soo silentno sound!!what happened?Are you playing Hide and seek? |
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Answer» hahhaha endhulo KUDA aadukovacchaaa☺☺☺ |
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| 48. |
How do you differentiate between sodium carbonate and copper carbonate using chemical reactions? |
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Answer» Answer: I know that NAHCO3 can be thermal DECOMPOSED into Na2CO3 via this REACTION: 2NaHCO3⟶Na2CO3+CO2+H2O Explanation: MARK me as brainiest |
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| 49. |
determine the relation between Vander wall constant and critical temperature, critical pressure, critical volume. |
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Answer» critical VOLUME = 3b critical TEMPERATURE = 8a/27Rb |
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| 50. |
Assertion (A): Following is a balanced chemicalequation for the action of steam on iron:3Fe + 4H2O → Fe3O4 + 4H2Reason (R): The law of conservation of massholds good for a chemical equation. |
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