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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. |
NMR वर्णमिति का क्या सिध्दान्त है? |
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Answer» ong>EXPLANATION: HOPE it helps you please please please please mark me as BRAINLIST answer and thanks my answers please please please please |
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| 2. |
An important ore of zinc is zinc blende. Zns. |
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Answer» ong>Answer: The most COMMONLY available ore USED in the extraction of ZINC is CALLED Zinc Blende also known as Zinc Sulphide (ZNS). |
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| 3. |
8. From the symbol 35/17 CI for the element chlorine write down the atomic number and mass number of chlorine. |
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Answer» ONG>ANSWER: What Is This Is This A QUESTION |
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| 4. |
Difference between lust and love?? Please answer correctly |
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Answer» ONG>Answer: Lust is about a PHYSICAL or sexual attraction whereas love might encompass lust, but it's more emotional and is about ACTUALLY caring for the other PERSON,” Explanation: please MARK me as Brainliest |
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| 5. |
N2+3H2=2NH3. 1) what is the relation between the number of atoms of the reactants and product? |
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Answer» ong>Explanation: The number of NITROGEN and hydrogen atoms are equal in both the reactant and product sides. This is because of law of conservation of MATTER. This is done by balancing the equation N2 + H2 = NH3 Hope it helps, Mark as branliest |
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| 6. |
What happens when acetylene is heated in a copper tube at 600◦C? |
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Answer» ong>Answer: Answer. HELLO THERE! When 3 moles of ACETYLENE is PASSED through red hot copper tube, cyclic polymerization takes PLACE, and Benzene is formed. That's it! |
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| 7. |
Explain the reaction of ethylthiol with mercuric chloride |
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Answer» ONG>ANSWER: c2h5clhg Explanation: c2h5+hgcl2 -------- c2h5hgcl |
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| 8. |
Write electronic configuration of hydride ion and oxide ion |
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Answer» ER: For EXAMPLE, we know that Oxygen always forms 2- ions when it makes an ION. This would add 2 ELECTRONS to its normal configuration making the new configuration: O2- 1s22s22p6. With 10 electrons you should note that oxygen's electron configuration is now exactly the same as Neon's. Explanation: ➡️plz FOLLOW me and thank my answers ❤ |
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| 9. |
Write word equations for two chemical reactions with the help of materials given in the box. WATER, AIR,COPPER SULPHATE,VINEGAR,IRON,CARBONDIOXIDE,LIMEWATER, IRON SULPHATE,IRON OXIDE * |
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Answer» help of material given in the BOX water,air,copper,sulphate, VINEGAR,iron, carbon dioxide, line water,iron sulphate, iron oxide only two equation can be MADE 1.iron + air+water= iron oxide 2.copper sulphate + iron = iron sulphate + Copper |
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| 10. |
What is meant by homologous series it's explanation . |
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Answer» ong>Answer: A homologous series is a family of hydrocarbons with SIMILAR chemical properties who share the same general FORMULA. We will look at three hydrocarbon series: alkanes, ALKENES and the cycloalkanes. Hydrocarbons are compounds that contain only hydrogen and carbon. Explanation: please mark as brainliest and follow me PLEASE |
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| 11. |
In which period does the actinide series of elements appear |
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Answer» TH Period Mark me as BRAINLIEST |
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| 12. |
Which of the following has larger mass.a mole of ammonia and a mole of methane |
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Answer» ONG>Answer: a mole of AMMONIA contains more mass thank you so much |
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| 13. |
Difference between lust and love? Please explain don't spam otherwise you will be reported. |
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Answer» is emotional; lust is physical. LOVE is an emotional desire to connect with and be close to another PERSON. It creates within us a feeling of attraction to someone not based on his or her outward appearance, but the QUALITIES that ENCOMPASS his or her INNER self. |
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| 15. |
calculate the mass of carbon dioxide which contains the same number of molecules as in 40 grams of Oxygen gas |
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| 16. |
According to which law different proportion of oxygen exist in oxides of Nitrogen ? (A) Law of constant composition(B) Law of combining weight(C) Law of multiple proportion(D) None of these74.5 g metal chloride contain 355 g chlorine. |
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Answer» ong>ANSWER: OPTION c Explanation: LAW of multiple proportions. |
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| 17. |
What is the acogadro ^13 no |
| Answer» AVOGADRO constant is the proportionality factor that RELATES the number of CONSTITUENT particles in a sample with the amount of substance in that sample. Its SI unit is the reciprocal mole, and it is defined as NA = 6.02214076×10²³ mol⁻¹. It is named after the Italian SCIENTIST Amedeo Avogadro | |
| 18. |
The burning of wood is change which results in formation of the new substance |
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Answer» ONG>Answer: Burning of wood is a chemical CHANGE as new SUBSTANCE which cannot be changed back (e.g. carbon dioxide) are FORMED. |
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| 19. |
Explain froth flotation method. |
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Answer» ong>Answer: For example, forth flotation is a technique commonly used in the MINING industry. in this technique, PARTICLES of interest are physically separated from a liquid PHASE also also result of differences in the ability of air bubbles of selectively adhere to to the surface of the particals, based upon their hydrophobcityhope it helps youplx like ND mark. ........As BRAINLIEST. ........ |
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| 20. |
50 gram of sugaris dissolved in 1.45 kilogram of water calculate the concentration of solution |
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Answer» ONG>Explanation: CALCULATE the molarity of a solution containing 5 g of NaOH in 450 ML solution. Moles of ... 1 mol (74.5 g) of KCL is dissolved in 1 kg of water. |
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| 21. |
The valency of iron in Fe2(SO4)3 is ?? A.) +2 B.) +1 C.) +3 D.) +4 |
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Answer» ONG>ANSWER: option c. 3 Explanation: the valency of Fe in this is 3 |
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| 22. |
In which of the following sub shell is not filled in the 5th period (5s,5p,5d,4d) |
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Answer» ONG>Answer: 4d. Hope this HELPS you!! MARK brainliest if it is helpful. |
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| 23. |
Plzz give me the correct answer don't give unnecessary answer plzz |
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Answer» ong>Explanation: An ion is an ATOM or group of atoms in which the number of electrons is not equal to the number of protons, giving it a net positive or negative electrical charge. An anion is an ion that is negatively charged, and is ATTRACTED to the anode (positive electrode) in electrolysis. A cation has a net positive charge, and is attracted to the cathode (negative electrode) during electrolysis. Comparison chart Anion versus Cation comparison chart Anion Cation Definition An anion is an atom or a MOLECULE which is negatively charged, i.e. has more number of electrons than protons. A cation is an atom or a molecule which is positively charged, i.e. has more number of protons than electrons. Charge Negative Positive Examples (O2-), sulfide (S2-), fluoride (F-), chloride (Cl-), bromide (BR-), iodide (I-), nitride (N3-) and hydride (H-) sodium (Na+), Iron (Fe2+), and Lead (Pb2+) Etymology The Greek word ano (up) The Greek word kata (down) Electrode attracted to during electrolysis Anode Cathode Type of element a nonmetal a metal |
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| 24. |
How many significant figures are there in 0.0015 and 100.00 |
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Answer» ong>Answer: two Explanation: 0.0015 has 2 sig. figs. Captive zeros trapped between two non-zero digits are ALWAYS significant. 100 have 2 "sig FIG". HOPE THIS HELPS... PLEASE MARK IT AS BRAINLIEST ANSWER AND FOLLOW ME IF IT HELPS... |
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| 25. |
An Electron Has Negative Charge |
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Answer» ong>ANSWER: Yes, this SENTENCE is correct. ELECTRONS have negative CHARGE while protons have positive charge. |
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| 27. |
110g of a solute are present in 550g of solution.Calculate the concentration of the solution. (b) Give any three points of difference between true solution,colloidal solution and suspension |
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Answer» ONG>Answer: 660g is the CALCULATION of 110+550 |
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| 28. |
What is the IUPAC name of the following compound a) CH3CH2OCH2CHCH3CH3 |
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Answer» ong>ANSWER: HEXANOL(c6h14o) IUPAC name for CH3CH2OCH2CHCH3CH3 is hexanol |
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| 29. |
जब किसी पारदर्शी माध्यम में बाहर कीओर उभरे दो गोलीय पृष्ठ होते हैं तो उसेकहते हैं- |
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Answer» तल लेंस Explanation: जब किसी पारदर्शी माध्यम मे बाहर की ओर उभरे दो गोलीय पृष्ठ होते हैं तो उसे उत्तल लेंस कहते हैं । |
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| 30. |
Convert the strength of 3 solution containing 5 gram of glucose in 250ml of a solution |
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Answer» ONG>ANSWER: Solution : Strength of solution =
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| 31. |
Write two differences between orbit and orbital. |
Answer» FERENCES between Orbit and OrbitalsOrbit:-
Orbitals:-
Hope it works..✌ please mark it as brainliest |
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| 33. |
Write the mechanism of addition of thiol to alkene |
| Answer» ONG>EXPLANATION: | |
| 34. |
A furnace is charged with 100 kmols of fuel gas, the composition of which is: 50% CO, 30% H2, 5% CH4, 5% C2H6 and 10% O2. Dry air is supplied 50% in excess for combustion. Assuming complete combustion.Calculate complete analysis and ORSAT analysis. |
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Answer» ong>Answer: A SHOPKEEPER BOUGHT 50 English BOOKS at the cost of rupees 2000 per 25 books and 75 Mathematics books at the cost of rupees 1500 per 15 books. Find: (a) The cost PRICE of the English books. (b) The cost price of the Mathematics books. (c) The cost price of all English and Mathematics books. (d) If he SOLD the English books at rupees 95 per book, find his profit in English books. (e) If he sold the Mathematics books at rupees 95 per book, find his profit or loss in Mathematics books. |
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| 35. |
Ok so can you please tell me The correct way to balance chemical equations??? If you're from ICSE BOARD......PLEASE....❤ |
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Answer» t chemical equation you will get lots of VIDEOS on youtube you can see and LEARN from their but the main thing let me tell you In a chemical equation, the reactants are written on the left, and the PRODUCTS are written on the RIGHT. The coefficients next to the symbols of entities indicate the number of moles of a substance produced or USED in the chemical reaction. Please mark my answer as brainliest answer |
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| 36. |
11. किसमे hcp क्रिस्टल संरचना होती है ?a |
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Answer» ong>ANSWER: sote m Explanation: |
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| 37. |
water sample in analysis give the following results : Ca(HCo3)2 =105ppm, Mg(HCo3)2 = 125ppm, CaSo4 = 75ppm, CaCl2 = 82ppm, MgSo4 = 26ppm. Calculate the temporary hardness and permanent hardness in °Fr. |
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Answer» ong>ANSWER: motor SE Ambala City to PPM mgso4 26 PPM will be calculated in Fahrenheit |
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| 38. |
Explain why solder is a mixture not a compound |
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Answer» ong>EXPLANATION: Air is MIXTURE, but not a compoundbecause of the following reasons: Air can be separated into its constituents such as OXYGEN, nitrogen, etc. by fractional distillation of liquid air. Air shows the properties of all GASES present in it. |
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| 39. |
what happens when zinc granules are heated with sodium hydroxide solution? write equation of the reaction which takes place |
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Answer» ONG>ANSWER: Zn+NaOH------>Na2ZnO2+H2 |
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| 40. |
Why do we say that "burning of fuels" can cause ' health hazards' ? |
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Answer» ong>Answer: Burning of fuels causes very SERIOUS HEALTH hazards and affects all the living ORGANISMS. Burning of fossils produces very dangerous gases like CARBON monoxide, sulphur dioxide, etc, which affects the bodies of living organisms. LONG exposure to such gases can cause lung cancer, asthma, etc. |
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| 41. |
Given below is a conversation between two farmers Ramu and Shera. Ramu: Brother Shera, your wheat crops looks beautiful! They have grown pretty fast. Shera: Yes, I have sprayed urea this time. What about you? Ramu: Well, I am still relying on good old cow dung. I am saving money for buying a tractor. Shera: That’s a good idea. Tractor saves a lot of time and labour. Ramu: Yes, it’s been very labour intensive for me and now these weeds have come up. Shera: Why don’t you try weedicides, they are very effective! Now answer the following questions based on your understanding of conversation given in above paragraph and the related studied concepts. (i) List the two practices mentioned in the above conversation, which are not environment friendly and give reason that why do we consider them harmful? |
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Answer» ONG>Answer: VERY big question |
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| 42. |
Discuss the Biological significance of chlorine |
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Answer» ONG>Answer: Chlorine is a component of all body secretions and excretions resulting from processes of building (anabolism) and breaking down (catabolism) body tissues. ... Chlorides (chlorine compounds) PLAY an essential role in the electrical NEUTRALITY and pressure of EXTRACELLULAR FLUIDS and in the acid-base balance of the body. |
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| 43. |
Which formula is of tertiary alcohol ? |
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Answer» ong>Answer: Its general formula is R3COH.
EXPLANATION: A tertiary (3°) alcohol is one in which the CARBON atom (in red) with the OH group is attached to three other carbon ATOMS (in blue). HOPE IT HELPS U! |
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| 44. |
Q no 4 Name the following horizontal rows in modern periodic table |
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Answer» ONG>Answer: which FOLLOWING pls give the QUESTION correctly |
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| 45. |
What is the ratio by mass of nitrogen and hydrogen in ammonia? |
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Answer» ong>ANSWER: |
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| 46. |
The solubility of pbF2 (Formula height =245) is 0.46 g/L .What is solubility product ?? |
Answer» see answer in attachment !!SORRY for what I have did !! but it's good for US !!good LUCK for FUTURE ; |
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| 47. |
Chemistry half reaction method |
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Answer» ong>Answer: KYA h ye bats OOOO samjh NAHI aaya Explanation: may be 'H2O----H2+O |
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| 48. |
6g H2 react with 8g oxygen to form water. after the completion of the reaction what is the limiting reagent |
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Answer» O2→2H2O10 G of hydrogen (molar mass 2 g/mol) = 2 g/mol 10 g = 5 mol 64 of OXYGEN (molar mass 32 g/mol) = 32 g/mol 64 g = 2 mol Explanation: As per the balanced chemical EQUATION, 1 mole of oxygen will REACT with 2 moles of hydrogen to form 2 moles of water. 2 moles of oxygen will react with 2×2=4 moles of hydrogen to form 4 moles of water. Here, oxygen is the LIMITING reagent and hydrogen is the excess reagent. |
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| 49. |
The electronic configuration of three elements X,Y and Z are X:2 Y :2,8,7 Z:2,8,2 (a)Y is a metal (b)X is metal (c)Y is a non metal and Z is metal (d)Z is a non metal |
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Answer» ong>ANSWER: |
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