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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. |
બુદ્ધિ ના ત્રણ પ્રકાર કોણે દર્શાવે છે. બુદ્ધિ ના ત્રણ પ્રકાર કોણે દર્શાવે છે |
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Answer» ऐसे लिख जैसे समझ में आए उर्दू फारसी जैसे मत likh Explanation: hhkalsnbdjkzbvwlsjzvjwkdvdjjrvdlblsvhepdvjcg HOOP |
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| 2. |
Use the Born Haber cycle to calculate the lattice energy of CaCl2(s). Given the following data: Heat of sublimation of Ca = 179 kJ/mol Bond dissociation energy of Cl2 = 243 kJ/mol EA of Cl = -349 kJ/mol First Ionization Energy, IE1 of Ca = 590 kJ/mol Second Ionization Energy, IE2 of Ca = 1145 kJ/mol Net energy change for the formation of CaCl2 from its elements in their standard states (Hf) = -796 kJ/mol |
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Answer» Answer: Calculation of lattice enthalpy of NACL LET US USE the BORN - Haber cycle for determining the ... 121 kJ mol-1 ii) Dissociation of Cl2 to 2Cl is 242.8 kJ mol-1 iii) Ionisation of Ca to Ca2+ is |
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| 3. |
Si unit - Time- Force-Preasure |
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Answer» Time : second Force: Newton Pressure: Pascal |
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| 4. |
Discuss one property in which the anode Ray's different from cathode Ray's |
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Answer» Answer: Depend on nature of GAS present in Crookes Tube. Explanation: HOWEVER CATHODE RAY's don't depend upon nature of the gas present in Crookes Tube. |
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| 5. |
HCl acid is added to ethene. |
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Answer» Answer: Unsaturated hydrocarbons can undergo addition reactions to form saturated hydrocarbons. Saturated hydrocarbons contain single bonds between the carbon ATOMS. The addition reaction between hydrochloric acid (HCl) and ethene (C2H4 ) yields CHLOROETHANE. BROMINE (BR2) dissolves in water to form a brown COLOURED solution.
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| 6. |
Write the expressions for the following reoclions in terms of taleof comumption of the reactants and the rate of Formation ofthe products0 2 No + 0,2 NO, |
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| 7. |
Dilute acid is added to a solution of metal carbonate or metal hydrogen carbonate. |
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Answer» POLISHER is a ___fabric |
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| 8. |
HNOst Ca (OH) - Ca(NO3), +H₂O |
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Answer» Explanation: thisthis explanation is ALMOST correct because HNO3 reacts with other METALS to FORM H2O but if you REACT HNO3 along with MAGNESIUM ore manganese that it will give out hydrogen |
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| 9. |
Before buring in air , the magnesium ribbon is cleaned by rubbing With a sand paper |
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Answer» yes Explanation: because it has moistureness DUE to TEMPERTURE and due to some CONDITION |
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| 10. |
40 g was weighed in a silica crucible. After heating for one hour at 110°C, the residue weighed 1.10 g. The crucible next was covered with a vented lid and strongly heated for exactly7 minutes at 950–20°C. The residue weighed 1 g. The crucible was then heated without cover, until a constant weight was obtained. The last residue was found to weigh 0.21g.Calculate the %'results of the above analysis.O A Moisture = 10.24%Volatile matter = 20.40%Ash = 7%B. Moisture = 26.14%Volatile matter = 15.15%Ash = 21%OC Moisture = 19.02%Volatile matter = 10.10%Ash = 13%OD Moisture = 21.42%Volatile matter = 7.14%Ash = 15% |
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Answer» Answer: this is a compound . magnesium, manganese, SILVER OXIDE, PLATINUM |
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| 11. |
Alkane into alkyl chloride |
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Answer» what's the QUESTION mate please MARK me as BRAINLIEST |
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| 12. |
Name the materials which were earlier used for manufacturing vehicles. Give reasons for theirdiscontinuation. |
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Answer» Explanation: earlier materials LIKE goods were used for manufacturing of vehicles but nowadays this has been DISCONTINUED because of many reasons as we KNOW for getting what we do NEED to CUT out the forest which is having a very bad impact on our environment as well as Woods are not that much strong and do not last so much time there we have shifted from wood to metal for making vehicles |
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| 13. |
Which pair of atomic numbers represent elements in the same groupa.6,12b.4,16c.11,19d.8,17please give me answer correctly |
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Answer» answer is 2 Explanation: answer is 4,16 |
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| 14. |
Which is discovered first electron or proton |
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Answer» Answer: Electron was DISCOVERED first, proton SECOND and finally NEUTRON was discovered. COINCIDENCE or something like that is, all these three subatomic. Hope it will be HELPFUL ✌️ |
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| 15. |
Which of the following statements are true about respiration and combustion? a. Both processes release energy in the form of heat b. Both respiration and combustion require oxygen. c. Both processes carry on in the presence of CO2. a, b & c a & c a & b b & c |
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Answer» Answer: a is wrong:-respirartion does not release energy c. Is right :-they carry on but they do not require it I THINK b and c Thanks bro |
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| 16. |
When acid reacts with metal carbonate or a metal hydrogen carbonate , it gives the corresponding salt , gas and one more product , name the gas and the product . (A). Carbon dioxide,water (B) hydrogen,salt (C). Carbon dioxide,salt (D). All of the above |
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Answer» Acid+metal carbonate =salt+ WATER+ CARBON CACO3 +2HCL=cacl2+H20+Co2 |
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| 17. |
due to low density we are able to cut potassium and sodium with a knife?plz quickly ans.me yes or no |
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Answer» Answer: This STATEMENT is true because POTASSIUM and SODIUM are very soft metals and able to cut with a KNIFE. |
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| 18. |
1-4 निम्नलिखित को ब्रॉस्टेड-लॉरी अम्ल और क्षार में वर्गीकृत कीजिए -HCl, NH3,Hot, CN- |
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Answer» ब्रॉस्टेड-लॉरी अम्ल और क्षार में वर्गीकृत कीजिए hcl and nh3 Explanation: |
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| 19. |
Please figure out what are the mistakes in 2 electronic dot |
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Answer» Answer: hope this will HELP you |
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| 20. |
How many moles of ethane are required to produce 44g of CO2(g),after the combustion of ethane?? |
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Answer» Answer: Ethane on combustion GIVES CO2 and H2O as follows. C2H6 +7/2O2———->2CO2+3H2O 2 moles of CO2 is produced from=1 mole ethane 1 mole of CO2 is produced from =0.5 mole ethane So 44 GM CO2 is produced from =0.5 X 30=15 gm Ethane. 0.5 mole or 15 gm Ethane is required to PRODUCE 44 gm.of CO2.
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| 21. |
What is the equations for the fir st two ionization energies of strontium |
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Answer» How to Calculate the IONIZATION Energy of Atoms Determine what ATOM you want to use for calculating the ionization energy. ... Decide how many electrons the atom contains. ... Calculate the ionization energy, in UNITS of electron volts, for a one-electron atom by squaring Z and then multiplying that RESULT by 13.6. |
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| 22. |
यदि 100 ml NaOH विलयन में 0.4g NaOH घुला हो तो विलयन की नार्मलता परिकलित कीजिए |
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Answer» Answer: ye to the DIRECTION of the applied POST on FACEBOOK and TWITTER ACCOUNT on which you are not the intended recipient you |
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| 23. |
16 Expansion of a perfect gas into vacuum is related withq=0(1) ∆H = 0(4) All of thesew=0 plz explain one by one |
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Answer» Explanation: w=-p expantion (v2-v1) p expantion =0 =0 vaccume .•. w=0 net heat exchange with SURROUNDING will be zero because surrounding is vaccum. q=0 delta u =q+w=0 delta u=0 |
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| 24. |
the respective standard reduction potentials in V for Pb2+ and Ni2+ are -0.13 and -0.28. Which substance will be oxidized in the voltaic cell? |
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| 25. |
यौगिक Fe3O4 में और Oका प्रकाशित ज्ञात कीजिए |
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Answer» Answer: लोहा या लोह (Iron) आवर्त सारणी के आठवें समूह का पहला तत्व है। धरती के गर्भ में और बाहर मिलाकर यह सर्वाधिक प्राप्य तत्व है (भार के अनुसार)। धरती के गर्भ में यह चौथा सबसे अधिक पाया जाने वाला तत्व है। इसके चार स्थायी समस्थानिक मिलते हैं, जिनकी द्रव्यमान संख्या 54, 56, 57 और 58 है। लोह के चार रेडियोऐक्टिव समस्थानिक (द्रव्यमान संख्या 52, 53, 55 और 59) भी ज्ञात हैं, जो कृत्रिम रीति से बनाए गए हैं। लोहे का लैटिन नाम :- फेरस इतिहास उपस्थिति एवं प्राप्ति निर्माण गुणधर्म यौगिक शारीरिक क्रिया में लोहे का स्थान उत्पादन उपयोग Explanation: please mark as BRAINLIST answer and follow me |
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| 26. |
1. Complete the equations of following chemical reactions: i. MgCO3 + HCl -------à ……………….. + …………… + ……………. ii. Mg(HCO3)2 + HCl -------à …………… + ……………. + ……………. 2.Tick (√ ) the correct statement: A. Calcium Carbonate reacts with dilute HCl and releases Carbon dioxide gas. B. Carbon dioxide on passing through lime water turns it milky. C. Limestone and Marble both are different forms ofCalcium Carbonate. D. All the above statements are correct. 3. When an acid reacts with a metal carbonate or a metal hydrogen carbonate, it gives the corresponding salt, gas and one more product. Name the gas and the product. (a) Carbon dioxide, water (b)Hydrogen, salt (c) Carbon dioxide, salt (d) All of the above 4. On shaking any of the carbonated cold drink (Limca or Coke) some bubbles appears and later it disappears also Give reason of appearance and disappearance of bubbles pls pls answer urgently and only correct answer |
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Answer» Explanation: Increases in body mass index (BMI) and the prevalence of overweight in low- and middle income COUNTRIES (LMICs) are often ascribed to changes in global trade patterns or increases in national income. These changes are likely to affect POPULATIONS within LMICs differently based on their place of residence or socioeconomic STATUS (SES). Objective Using nationally representative survey data from 38 countries and national economic indicators from the World Bank and other international organizations, we estimated ecological and multilevel models to assess the association between national levels of gross domestic product (GDP), foreign DIRECT investment (FDI), and mean tariffs and BMI. Design We used linear regression to estimate the ecological association between average annual change in economic indicators and BMI, and multilevel linear or ordered multinomial models to estimate associations between national economic indicators and individual BMI or over- and underweight. We also included cross-level interaction terms to highlight differences in the association of BMI with national economic indicators by type of residence or socioeconomic status (SES). Please mark me as BRAINLIEST |
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| 27. |
Limestone and marble both are different forms of calcium carbonate True or false |
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Answer» Answer: The MAIN difference between limestone and marble is that limestone is a sedimentary rock, typically composed of calcium carbonate fossils, and marble is a metamorphic rock. Limestone FORMS when shells, sand, and mud are DEPOSITED at the bottom of OCEANS and LAKES and over time solidify in. please mark as brainliest Explanation: |
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| 29. |
STAY HEALTHY A: Match the following:1. Gymnasium2. Aerobics3. Carbohydrates4. Proteins5. Yogab(a) energy value of food(b) eggs, poultry, fish, pulses,milk(c) potatoes, wheat, cereals(d) a place fitted up for exercise(e) condition and soundness ofbody or mind(f) the correct way of breathingand breathing exercises(g) the slow, calm and controlledway of life(h) vigorous exercises withrhythm6. Calorie7. Pranayam8. Healthna proverbs : |
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Answer» Answer: (a)-6.calorie (b)- 4protein (c)-3 carbohydrate (d)-1 gymnasium (E) health (g)5 yoga (h) - aerobics Explanation: hope it's HELPFUL for you |
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| 31. |
For a reactionA ------> B, having first orderTime (t) = 0 10 20 30(second)[A] = 90 60 40 xThe value of x will be(1) 35(3) 16.67(2) 20(4) 26.67how to do this without antilogs |
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Answer» Answer: yes c.you I am CHRISTOPHER and will not have to do with you are the four of you that you are not a big PART in the WORLD and the world of |
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| 32. |
What is the correct naming for this question??? |
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| 33. |
What are alkanesplease tell me rhe answer quick |
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Answer» Answer: Alkalis are bases but bases are not alkali. Alkali WATER or solution is called ALKALINE. Explanation: Please follow me SEE . |
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| 34. |
Specific gravity of 84% (w/w) pure HNO3 is 1.54. What volume of HNO3 is required to prepare 1 litre of 0.5M(molarity) HNO3 solution. [answer=24.35mL] |
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Answer» Specific gravity of 84% (w/w) pure HNO3 is 1.54. volume of HNO3 is REQUIRED to prepare 1 LITRE of 0.5M(molarity) HNO3 solution. [answer=24.35mL]. |
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| 35. |
3 g of activated charcoal was added to 50 mL of the acetic acid solution in a flask(0.06N). After an hour, it was filtered and the strength of the filtrate was found to be 0.042N . The amount of acetic acid adsorbed (per gram of charcoal) is : |
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| 36. |
Why do gases diffuse to each other? |
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Answer» Answer: Gases diffuse because their intermolucular and force of ATTRACTION are the weakest. |
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| 37. |
The monomers of buna-s rubber are |
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Answer» hi Explanation: |
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| 38. |
Properties of gold and it definition? |
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Answer»
Gold is METALLIC, with a YELLOW colour when in a mass, but when finely divided it may be black, ruby, or PURPLE. It is the most malleable and ductile METAL; 1 ounce (28 G) of gold can be beaten out to 300 square feet. It is a soft metal and is usually alloyed to give it more strength. |
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| 39. |
Paheli is suffering from indigestion due to acidity. Is it advisable to give her orange juice in this situation and why? answer briefly. |
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Answer» Answer: NO IT'S NOT SUITABLE FOR HER TO CONSUME ORANGE JUICE Explanation: ACIDITY IS CAUSED WHEN THE STOMACH ENZYMES AND ACIDS RISE UP TOWARDS THE OESOPHAGUS .ORANGE JUICE IS GOING TO BE ACIDIC AS IT CONTAIN CITRIC ACID, INSTEAD SHE SHOULD CONSUME AN ANTACID TO NEUTRALIZE THE ACIDS WHICH CAUSE ACIDITY. HOPE THIS WILL HAVE HELPED YOU. |
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| 40. |
Deepika was travelling in a train with her father in the coastal regions of kutch in Gujarat state. She noticed that there were shallow pits along the railway line filled with sea water . In some pits there was a white powdery substance. She also noticed small monds of white substance collected by the workers. She wanted to know about such things , so she asked all such concerning questions to her father. Her father answered her questions politely.1. What are values shown by deepika in asking such questions?2. How is the white powdery substance collected. |
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Answer» Explanation: 1-awareness 2-the WHITISH substance is SALT or NaCl and is COLLECTED by DRYING the sea WATER |
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| 41. |
7. Which of the following statements about the given reaction are incorrect? 3Fe+4H2O------->Fe3O4+4H2 0/1 iron metal is getting oxidised water is getting reduced water is acting as reducing agent water is acting as oxidising agent |
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Answer» Oxidation reaction is defined as the reaction in which a SUBSTANCE looses its electrons. The oxidation STATE of the substance increases. Reduction reaction is defined as the reaction in which a substance gains electrons. The oxidation state of the substance gets reduced. On reactant side: Oxidation state of iron = 0 Oxidation state of HYDROGEN = +2 On product side: Oxidation state of iron = +2 and +3 Oxidation state of hydrogen= 0 The oxidation state of iron increases from 0 to +2 and +3, it is getting oxidized. Thus iron act as a reducing agent. The oxidation state of hydrogen decreases from +2 to 0, it is getting reduced. Thus WATER act as oxidizing agent. Main Formula in clip |
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| 42. |
Which is helpful for concentration?a. Agnisarb. VamanC. Bastid. Tratak |
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Answer» make it BRAINLIST |
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| 43. |
What is reactant and product |
Answer» The substance(s) to the left of the arrow in a chemical EQUATION are CALLED REACTANTS. A reactant is a substance that is PRESENT at the start of a chemical reaction. The substance(s) to the RIGHT of the arrow are called products . A product is a substance that is present at the end of a chemical reaction. |
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| 44. |
Answer this question please! |
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Answer» According to the FIRST law of thermodynamics, ΔU= q + W (i) Where, ΔU = CHANGE in internal energy for a process q = heat W = WORK Given, q = + 701 J (Since heat is absorbed) W = -394 J (Since work is done by the system) Substituting the values in expression (i), we get ΔU= 701 J + (-394 J) ΔU = 307 J Hence, the change in internal energy for the given process is 307 J. |
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| 45. |
The.... Are called grignard's reagent |
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Answer» Answer: YOUR ANSWER IS Explanation: GRIGNARD reagents are formed by the REACTION of magnesium metal with alkyl or alkenyl HALIDES. They're extremely GOOD nucleophiles, reacting with electrophiles such as carbonyl compounds (aldehydes, ketones, esters, carbon dioxide, etc) and epoxides. |
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| 46. |
“If temperature increases solubility of gas decreases”. For this situation which of the following statement(s) is/are correct ? (i) Reaction is endothermic. (ii) Le-chatelier’s principle can be applied. *2 pointsa)Statement (i) and (ii) both are correctb)Statement (i) is correct onlyc)Statement (ii) is correct onlyd)Both statement(s) (i) and (ii) are incorrect |
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Answer» Answer:c Explanation: solubility of gases in liquid is an exothermic reaction which takes PLACE under high pressure and LOW temperature. An EXAMPLE of cold drinks can b |
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| 47. |
Leaching of alumina from bauxiteexplain simply |
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Answer» Answer: Bauxite usually contains silica, iron oxide, and TITANIUM oxide as impurities. In the process of LEACHING, alumina is CONCENTRATED by digesting the powdered ore with a concentrated solution of NaOH at 473-523K and 35-36 bar. Under these conditions, alumina dissolves as SODIUM silicate LEAVING the impurities behind hope help u mate ❤..... |
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| 48. |
बफर विजयन की PH की गणना के लिए हेंडसन हजेलवाच् समीकरण की व्यतपति कीजिए |
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Answer» PLEASE MARK me as BRANILIEST. |
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| 49. |
Mixture alcohal and water is which type of laiuid? |
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Answer» Answer: When you MIX the rubbing ALCOHOL with WATER, the latter's MOLECULES make hydrogen bonds with the water molecules. The alcohol dissolves in the water to FORM a homogenous solution, so you cannot distinguish the alcohol and the water anymore |
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| 50. |
An atom 'A' has 3 electrons in the 3rd shell. Its atomic number is |
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