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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. |
Acid formed as a result of lightening reachesthe earth's surface through precipitation, thuscontributing to the acid rain as well as to the growthof plants. Justify. |
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Answer» Answer: Solution : During acid rain, the nitric acid formed as a result of LIGHTENING process in very DILUTE form is washed down to EARTH and reacts with metal carbonates to form nitrates. `CaCO_(3)+2HNO_(3)toCa(NO_(3))_(2)+CO_(2)+H_(2)O`. Nitrates so farmed, act as excellent nurtients for the growth of plants. |
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| 2. |
Gamma rays have ______ wavelength. *1 pointlonger than 20 cm300 pm - 400 nm3 pm - 300 pmshorter than 3 pm |
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Answer» Answer: WAVELENGTH of GAMMA RAYS 10^-5 m answer is Explanation: 10`-6 NM |
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| 3. |
Most of the parts used in the _______ satellite are made in INDIA. *INSATGSATEDUSATAstrosat |
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Answer» Answer: Satellites are designed, developed, assembled, and tested at the U R Rao Satellite Centre (formerly the ISRO Satellite Centre) in BANGALORE. Launch vehicles are developed at the Vikram Sarabhai Space Centre in Thiruvananthapuram. LAUNCHES take place at the Satish Dhawan Space Centre on SRIHARIKOTA Island, NEAR Chennai. |
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| 4. |
In 1608, spectacle maker and researcher, _______ made the first telescope. *GalileoHans LipppersheyCharles DarwinChandrasekhar |
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Answer» HANS lipppershey Explanation: i it is HELPFUL to you |
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| 5. |
Which of the following connective tissue lubricates the surfaces of bones? *LymphCartilagetendonsligaments |
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Answer» tendons Explanation: |
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| 6. |
A person suffering from sickle cell anemia should take a tablet of _______ daily. *Citric acidFolic acidIronCalcium |
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Answer»
The RIGHT ANSWER is FOLIC ACID.. |
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| 7. |
Which of the following RNA does not exist? *rRNApRNAmRNAtRNA |
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Answer» pRNA hope it'll HELP you PLEASE MAKE it BRAINLIEST |
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| 8. |
Maintaining the body's balance is the important function of which part of brain? *CerebrumCerebellumMedulla OblongataSpinal cord |
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Answer» Cerebellum Explanation: |
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| 9. |
Define Compound...____________________Ye moderates ne meri I'd ko banned kr diya tha |
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Answer» Answer: pata hai Explanation: jitna MAINE dusro KO samjha hai, utna mujhko koi samjh paya hi NAHI hai, jitna pyaar dusro DIYA hai, utna kabhi paya hi nahi hai, mujhe bhi koi yaad kare , shayad bhagwan ne mujhe aisa banaya hi nahi hai |
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| 10. |
Which part of the brain occupies two-third of the human brain? *Cerebellumcerebrummedulla oblongataspinal cord |
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Answer» Explanation: cerebrum is the answer cerebrum is the PART of the BRAIN which OCCUPIES two-third of the HUMAN brain. |
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| 11. |
Define pure substance...------------------------------------------Ye moderators mera picha hee nhi chor rahe hai |
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| 12. |
What is the purpose of the coefficients in a balanced chemical equation?A. They tell us the mass of the compoundsB. They tell us how many atoms of each element there are in a compoundC. They tell us the number of moles of each compound |
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Answer» Answer: |
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| 13. |
The excess reactant is the reactant that .A. runs out firstB. is left over after a reactionC. limits how fast the reaction happens |
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| 14. |
Write 'T' for true and 'F' for false for the following statements.1. Matter is made up of very small particles, called atoms, which are held together by intermolecular force,2. The greater the intermolecular space, the greater the cohesion3. The melting point of ice is the same as the freezing point of water.4. The atoms are held together in a molecule by a force called chemical bond.5. Chemical bonds are stronger than cohesive forces.SEND ME ANSWERS FAST ☺☺☺☺☺☺☺☺ |
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Answer» Answer: 1)true 2)true 3)true 4)false 5false
MARK AS BRAINLIEST |
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| 15. |
In the following reaction which of the compound is being reduced H2S+ SO2 + 3s+2H2O ?a)H2SOHS and SO2 d)None of themb)SO2 |
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Answer» Explanation: answer (d) |
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| 16. |
वायुमण्डल में कौनसी गैस, पराबैंगनी किरणों का अवशोषण कर लेती है?[A] ओजोन[B] मीथेन[C] नाइट्रोजन[D] हीलियम |
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Answer» Answer: a ) ओजोन Explanation: PLEASE mark me brainliest and FOLLOW and ALSO GIVE Thanks if you have get any help from my answer. |
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| 17. |
हरे फलों को कृत्रिम रूप से पकाने के लिए प्रयुक्त गैस है?[A] एथिलीन[B] एसिटिलीन[C] इथेन[D] मीथेन |
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Answer» Explanation: General SCIENCE - CHEMISTRY GK In Hindi MCQs 1. जीवाणुओं को नष्ट करने के लिए निम्नलिखित में से किस गैस का प्रयोग किया जाता है? [A] क्लोरीन [B] ऑक्सीजन [C] हाइड्रोजन [D] नियॉन Hide ANSWER Correct Answer: A [क्लोरीन] 2. कहाँ काम करने वाले व्यक्तियों को ब्लैक लंग रोग हो जाता है? [A] विद्युत्-लेपन उद्योग [B] कार्बनिक विलायक उद्योग [C] पेंट विनिर्माण उद्योग [D] कोयला खान Hide Answer Correct Answer: D [कोयला खान] |
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| 18. |
If the pH of a substance is 8, what is the pOH?14864 |
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| 19. |
What is the pOH of a substance with a hydroxide ion concentration ([OH-]) of 2.19 x 10-7 M?8.607.346.664.53 |
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Answer» C:- 2574030731 p:- HELLO Z●●M COME gir_ls |
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| 20. |
1.U.P.A.C name of the following compound is:COOHBr3-Bromo-pent-3-en-oic acid03-Bromo-pent-2-en-oic acidO 3-Bromo-pent-4 en oic acid3-Bromo pentenoic acid |
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| 21. |
NH,CHCorrect I.U.P.A.C name of the compoundis:С.Н.,O 4-Ethyl-2-methyl aniline2-Methyl-4-ethyl anilineO 3-Methyl-5-ethyl aniline4-Ethyl-6-methyl aniline |
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| 22. |
Question No. 2Which of following is an optically inactive compound?CH,H-ОНCH,ОНCH,CH,H-ОНHОНCH,ОНН |
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Answer» Molecules that posses chirality are OPTICALLY active. Chiral carbon is the one having all different groups attached. Propanoic acid is: CH 3
CH 2
COOH has no chirality thus its optically inactive Glyceraldehyde:HOCCH(OH)CH 2
OH has a ciral center thus its optically active Lactic acid is H 3
CCH(OH)COOH has a chiral center thus its optically active Glucose is HOCCH(OH)CH(OH)CH(OH)CH(OH)CH 2
OH has multiple chiral center thus its optically active |
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| 23. |
Question No. 1Which of the following compound shows complete cyclic deloca isation of ? Here is a whole number>808 |
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Answer» Answer: 1) use the Hückel 4n + 2 rule to determine whether or not a given polyunsaturated cyclic hydrocarbon should exhibit aromatic PROPERTIES. describe the difference in properties between an aromatic hydrocarbon, such as benzene, and a non-aromatic polyunsaturated cyclic hydrocarbon, such as cyclobutadiene or cyclooctatetraene. 2) draw molecular orbital DIAGRAMS for aromatic species, such as benzene, the cyclopentadienyl anion and PYRIDINE, and COMPARE these diagrams with those obtained for non-aromatic species, such as cyclobutadiene and the cyclopentadienyl. PLEASE MARK AS BRAINIEST |
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| 24. |
How would you balance the reaction in the image below? *Hint - write it out and solve on paperA1 + 0 small 2 and A1 small 2 O small 3it is already balancedA.coefficients would be 2, 1, 1B.coefficients would be 2, 2, 1C.coefficients would be 4, 3, 2 |
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Answer» B COEFFICIENT WOULD be 2,2,1 |
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| 25. |
SUBSTANCE MELTING POINT(℃) BOILING POINT(℃)A -188 -42B -114 35C 17 118D 96 344E 300 580F 808 1465(a) Which substance will turn from a liquid to a solid when placed in a refrigerator (temperature = 4℃)(b) Classify the substance A, B and E into solids, liquids and gases at room temperature.(c) Which of the following substance has lowest melting point?(i). A (ii) B (iii) C (iv) E(d) Which of the following substance is a volatile liquid?(i). B (ii) D (iii) E (iv) |
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| 26. |
SUBSTANCE MELTING POINT(℃) BOILING POINT(℃)A -188 -42B -114 35C 17 118D 96 344E 300 580F 808 1465(a) Which substance will turn from a liquid to a solid when placed in a refrigerator (temperature = 4℃)(b) Classify the substance A, B and E into solids, liquids and gases at room temperature.(c) Which of the following substance has lowest melting point?(i). A (ii) B (iii) C (iv) E(d) Which of the following substance is a volatile liquid?(i). B (ii) D (iii) E (iv) F |
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Answer» udjfuf7 DEAR Davzueueuruur |
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| 27. |
1.what is isotope and isobar.Thnx mila to kya hua,please! u can ask anything yrr welcome. |
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Answer» Answer: Isotopes are ATOMS with the same number of protons but DIFFERING numbers of neutrons. ISOBARS are atoms of different chemical elements having equal values for atomic MASS. Isotopes have the same atomic number. mark this answer as Brainlist |
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| 28. |
1.what is isotope and isobar.Thanks se kya hota h .please! u can ask anything yrrwelcome. |
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Answer» Answer: bye bye |
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| 29. |
यकालरशिका ध्यान कन्द पर जमा की पावसभी प्रश्न हल करना अनिवार्य है। सभी प्रश्नों केस्टोक्रा और प्रतिस्राक्स रखाजाका समाए। ।Explain Stoke's and Antistokes lines?भधाय और अधवागExplain polar and Non-polar molecules with exp |
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Answer» Answer: . Energy (be) the ability do work. Energy (be) everywhere nature, sunlight, wind, WATER, plants, and animals. We (use) energy every day. There (be) two kinds energy: kinetic and potential. Kinetic energy (be) the energy motion. Potential energy (be) stored energy. A GOOD example kinetic and potential energy (be) a FROG leaping. A frog sitting a lily pad (be) an example potential energy. The frog leaping (be) an example kinetic energy. Different forms energy (be): light, chemical, mechanical, heat, ELECTRIC, ATOMIC and sound energy. All these forms energy (can brake) down either kinetic or potential. plz give me a like and follow l give answer |
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| 30. |
The compound that is used in nuclearreactors as protective shields and controlrods isa), Metal borides b) Metal oxidesc) Metal carbonates d) Metal carbide |
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Answer» Answer: The compound that is used in nuclear reactors as protective shields and control rods is Metal Borides (A) |
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| 31. |
For an isothermal and cyclic process q=(a) W(b)-W(c) 0(d) U |
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| 32. |
Which one of the following oxides is amphoteric in nature.a.rubidium oxide b.barium oxidec.antimony oxide d.sulphur oxide |
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Answer» Hey mate! Here's ur answer:- I guess sulphur oxide Hope it helps you...mark as brainliest...PLZ follow me Do drop few THANKS on my few answers also |
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| 33. |
Henry's law constant for CO, in water is 1.67x108 Pa at 298 K. Calculatethe quantity of Co, in 500 mL of soda water when packed under 2.5 atmCO, pressure at 298 K. |
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Answer» Answer: It is given that: KH= 1.67 × 108Pa PCO2 = 2.5 atm = 2.5 × 1.01325 × 105Pa = 2.533125 × 105Pa
According to Henry's LAW: PCO2 = KHX ⇒ x = PCO2 / KH = 2.533125 × 105 / 1.67 × 108 = 0.00152
We can write, [Since, is negligible as COMPARED to]
In 500 mL of soda water, the volume of water = 500 mL [Neglecting the amount of soda present] We can write: 500 mL of water = 500 g of water =500 / 18 mole of water = 27.78 mol of water Now, nCO2 / nH2O = x nCO2 / 27.78 = 0.00152 nCO2 = 0.042 mol Hence, quantity of CO2 in 500 mL of soda water = (0.042 × 44)g = 1.848 g Explanation: HOPE this helps you if it was helpful then please mark me as the brainliest and please follow |
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| 34. |
F. What is binding energy per nucleon ?Explain with the help of diagram howbinding energy per nucleon affectsnuclear stability ? |
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Answer» Nuclei with very LOW or very high mass NUMBERS have lesser binding ENERGY per nucleon and are less stable because the lesser the binding energy per nucleon, the easier it is to SEPARATE the nucleus into its constituent nucleons. Hope this helps uh. |
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| 35. |
Write the abbreviations for the following1. Master of Commerce2. Indian Administrative Service3. Confederation of Indian Industry4. Member of Legislative Council5. For Your Informationfast as well as plss |
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Answer» Answer: 1.M.Com 2.IAS 3.CII 4.MLC 5.FYI |
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| 36. |
What is middle product of thefollowing reaction?OH04Lens(CH3C0120AICH?Phenolhisand p-hydroxyacetophenonsܘ8-Q- H랩CH |
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Answer» PLEASE MARK it as BRAINLIEST |
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| 37. |
CH2=CH-CH2-CH-CH3ОН answer the following name the functional group present in the given compound |
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Answer» Answer: OH - alcohol GROUP Explanation: alcohol group |
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| 38. |
Q.NO.10 Define the terms.(a) Catalysis (b) Desorption (c) SorptionO.NO.11 Write eynressions of worlwhomical reaction |
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Answer» Answer: The Impact Factor measures the AVERAGE number of citations RECEIVED in a particular year by papers PUBLISHED in the JOURNAL during the two |
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| 39. |
Q.NO.10 Define the terms.(a) Catalysis (b) Desorption (c) SorptionAO 11 Mlrite eynressions of Kofor fo!lowing chemical reactionWrite |
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Answer» Catalysis is the process of increasing the RATE of a chemical reaction by adding a substance known as a catalyst (/ˈkætəlɪst/). Catalysts are not consumed in the catalyzed reaction but can act REPEATEDLY. Often only very small amounts of catalyst are required. Desorption is a phenomenon whereby a substance is released from or through a SURFACE. The process is the opposite of sorption. This OCCURS in a system being in the state of sorption equilibrium between bulk phase and an adsorbing surface. Sorption is a physical and chemical process by which one substance becomes attached to another. |
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| 40. |
Which substance would not be used for preparing a pure sample of crystalline magnesium sulfate by reaction with dilute sulfuric acid?A magnesium carbonate B magnesium hydroxide C magnesium nitrate D magnesium oxide |
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Answer» Answer: Barium sulfate is prepared by REACTING barium chloride with sodium sulfate. The barium sulfate is FORMED as a precipitate. Describe an experiment to prepare a PURE, dry sample of barium sulfate, STARTING with barium chloride CRYSTALS and sodium sulfate crystals. |
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| 41. |
Which acid and base react together to produce an insoluble salt? A hydrochloric acid and sodium hydroxide B nitric acid and calcium oxide C sulfuric acid and barium hydroxide D sulfuric acid and zinc oxide |
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Answer» Answer: Solution:The reaction between an acid and a base is known as a neutralisation reaction. Often when an acid and base react a salt and water will be formed. We will look at a few examples of acid-base reactions. In chemistry the word salt does not mean the white substance that you sprinkle on your food (this white substance is a salt, but not the only salt). A salt (to chemists) is a product of an acid-base reaction and is made up of the cation from the base and the anion from the acid. Hydrochloric acid reacts with sodium hydroxide to form sodium chloride (a salt) and water. Sodium chloride is made up of Na+ cations from the base (NaOH) and Cl− anions from the acid (HCl). HCl (aq)+NaOH (aq)→H2O (L)+NaCl (aq) Hydrogen bromide reacts with potassium hydroxide to form potassium bromide (a salt) and water. Potassium bromide is made up of K+ cations from the base (KOH) and Br− anions from the acid (HBr). HBr (aq)+KOH (aq)→H2O (l)+KBr (aq) Hydrochloric acid reacts with ammonia to form ammonium chloride (a salt). Ammonium chloride is made up of NH+4 cations from the base (NH3) and Cl− anions from the acid (HCl). HCl (aq)+NH3(aq)→NH4Cl (aq) You should notice that in the first two examples, the base contained OH− ions, and therefore the products were a salt and water. NaCl (table salt) and KBr are both salts. In the third example, NH3 also acts as a base, despite not having OH− ions. A salt is still formed as the only product, but no water is produced. It is important to realise how useful these neutralisation reactions are. Below are some examples: Domestic uses Calcium oxide (CaO) is a base (all metal OXIDES are bases) that is put on soil that is too acidic. Powdered limestone (CaCO3) can also be used but its action is much slower and less effective. These substances can also be used on a larger scale in FARMING and in rivers. Limestone (white stone or calcium carbonate) is used in pit latrines (or long drops). The limestone is a base that helps to neutralise the acidic waste. Biological uses Acids in the stomach (e.g. hydrochloric acid) play an important role in helping to digest food. However, when a person has a stomach ulcer, or when there is too much acid in the stomach, these acids can cause a lot of pain. Antacids are taken to neutralise the acids so that they don't burn as much. Antacids are bases which neutralise the acid. Examples of antacids are aluminium hydroxide, magnesium hydroxide (“milk of MAGNESIA”) and sodium bicarbonate (“bicarbonate of soda”). Antacids can also be used to relieve heartburn. Industrial uses Basic calcium hydroxide (LIMEWATER) can be used to absorb harmful acidic SO2 gas that is released from power stations and from the burning of fossil fuels. Bee stings are acidic and have a pH between 5 and 5,5. They can be soothed by using substances such as bicarbonate of soda and milk of magnesia. Both bases help to neutralise the acidic bee sting and relieve some of the itchiness! Acid-base reactions Aim To investigate acid-base reactions. Apparatus and materials Volumetric flask conical flasks sodium hydroxide solution hydrochloric acid solution pipette indicator Method68a976f5804a61d7bdc10494dea3e172.png Use the pipette to add 20 ml of the sodium hydroxide solution to a volumetric flask. Fill up to the mark with water and shake well.
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| 42. |
Write the molecular formula of all compounds that can be formed by the combination of the followingions :(i) Cu2+(b) Fe3+(c)So ^2 4 |
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Answer» Explanation: No woh LADKI hai UNHA laka ki ma unka LIYA apna bio lakya hai. Uska nam Varshini hai. AUR mera name suraj hai. How R u? |
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| 43. |
Which process is used in the preparation of soluble salts? A electrolysis B evaporation C meltingD precipitation |
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Answer» Answer: Sodium chloride is a SOLUBLE salt. It is best PREPARED by a titration method using a NEUTRALISATION reaction between an acid and an alkali. |
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| 44. |
To which substance is dilute sulfuric acid added to prepare lead(II) sulfate?A aqueous lead(II) nitrate B lead foil C powdered lead(II) carbonate D powdered lead(II) oxide |
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Answer» Explanation: PBNO3 +H2So4=PbSo4+HNo3 marke as the BRAINLIEST |
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| 45. |
Which compound is insoluble in water?A lead sulfate B silver nitrate C sodium carbonate D zinc chloride |
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Answer» d.zinc chloride Explanation: because we are in the WORLD of the same way we have to WRITE to you about the world |
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| 46. |
There are three shells in the atom of element X . Three electrons are present in its outer shella) write the electronic configuration of element Xb) what is its atomic numberc) In which period and group does this element belongs to |
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Answer» Answer: a) 2,8,3 b) atomic no.=13 c) this ELEMENT is ALUMINIUM(AL) (please refer to periodic table for period and group) mark as brainliest if this HELPED you...thank you |
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| 47. |
C. Say whether the statements are trueor false.The scientific method can be applied tostudy of only natural phenomena. |
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Answer» It is true. Explanation: |
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| 48. |
The atomic number of an element is equal to whata) the number of protons plus the number of electrons b) the number of protons in the atom c) the number of neutrons in the atom d) the number of protons plus the number of neutrons |
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| 49. |
5.You are told that 2.5 mol of oxygen gas hasthe same mass as 1 mol of so, What is thevalue of n?A 1C3B 2.D 4 |
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Answer» Explanation: |
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| 50. |
4. डीकमेन की साइक्लो ऐल्केन चक्रीयकरण संश्लेषण विधि पर टिप्पणी लिखिये?Write a note on Dieckmann's synthesis for cyclisation of cycloa |
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Answer» Explanation: Explanation: sebaceous GLANDS are holocrine glands that PRODUCE sebum, a semiliquid mixture of GLANDULAR cell debris containing glycerides, free fatty acids, WAX esters, squalene, cholesterol, and cholesterol esters. Sebaceous glands are present everywhere on the human skin except for the palms, soles, and dorsa of the feet. Generally, they are associated with hair follicles and empty through a short duct into the canal of the hair follicle.1 The sebaceous glands are holocrine glands that produce sebum, a semiliquid mixture of glandular cell debris containing glycerides, free fatty acids, wax esters , squalene, cholesterol, and cholesterol esters. The largest and most NUMEROUS sebaceous glands are found on the face, scalp, chest, and back. ____________________ |
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