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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. |
How was the paddler treated at the crofter's the cottage? |
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Answer» Answer: So here is your answer Explanation: The peddler was received very warmly and received generous hospitality at the crofter's HOME. The crofter, an old and lonely man, served him PORRIDGE, treated him kindly and the two SMOKED and PLAYED cards. This made the peddler feel very happy. Hope this may help you a lot❣️!! |
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| 2. |
Which of the following metals will liberate hydrogen from dilute acids : Na Fe, Pb, Cu, Hg? Give reasons. |
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Answer» na,fe,pb will liberate hydrogen from dilute ACIDS because this METALS are more REACTIVE and can easily displace h + ions from dilute acid Pls mark my answer brainliest |
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| 3. |
Name the technique used to separate the following mixturesSaw dust and waterMercury and waterChalk and waterKerosene and waterAlcohol and water |
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Answer» : (a) Mercury and water are separated by DECANTATION by using SEPARATING funnel as the separation of TWO immiscible liquids by a separating funnel depends on the difference in their densities. Mercury is heavier than water therefore, forms the lower layer and separated from water. |
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| 4. |
What is the full form of lol ? |
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Answer» Answer: The FULL FORM of LOL is LAUGH Out Loud. Explanation: HOPE it helps you. |
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| 5. |
The infra red spectra of CO shows a vibrational absorption peak at 2170percm what is the force constant for the CO bond |
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Answer» ............... ........................ ................................. ....................................... |
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| 6. |
Explain how,the smell of food being cooked in the kitchen reaches us even from a considerable distance |
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Answer» Answer: because of diffusion Explanation: diffusion is the process by which SOLID ,liquid or gases particles moves from HIGHER concentration such as from the food to LOWER concentration such as CONSIDERABLE distances hope it will help you |
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| 7. |
What is the full form of ISO ? |
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Answer» Answer: The FULL FORM of ISO is International SCIENCE Olympiad. Explanation: HOPE it helps. |
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| 8. |
name the phenomenon observed when beam of light is passes through a solution of soap and define the same |
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Answer» When a beam of LIGHT is passed through a COLLOIDAL solution, then scattering of light is observed. This is known as the Tyndall EFFECT. This scattering of light ILLUMINATES the path of the beam in the colloidal solution. |
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| 9. |
Copper (II) chloride reacts with lead to form a solution of lead chloride and Copper. |
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Answer» CORRECT Question:- Convert the following TEXT equation to SYMBOLIC format. (Also, BALANCE it.) Answer:- Copper (II) = Chloride = ∴ Copper Chloride = Lead (II) = ∴ Lead Chloride = So, our equation (skeletal equation) WOULD be:- We can observe that, the equation follows law of conservation of mass, i.e. number of atoms before reaction and after reaction are same. Therefore, it is the balanced equation. |
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| 10. |
Write an activity showing that water containing salts, acids and alkalies can conduct electricity.The activity must have the following headings:1.Aim 2. Materials Required3.Procedure4. Observations5.ConclusionWell labelled and neat diagram showing activity should be drawn on the blank page of the notebook.proper date and heading should be mentioned |
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Answer» Explanation: FRIEND You kindly GO though the CHANNEL on YouTube named KClassScienceChannel you will understand the activity YouTube · KClassScienceChannel 1:44 Acids and BASES conduct electricity | Electricity | Physics Jul 5, 2013 |
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| 11. |
0.5 farady of electricity is passed through CaCl2, the amount of calcium metal deposited on electrode is? A) 10gB) 20gC)30gD)40g |
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Answer» ANSWER 2+ +2e − →Ca Number of moles of Ca= 40g/mol 10g
=0.25mol 1 MOLE Ca requires =2 moles of electrons =2 faradays of electricity. 0.25 mole Ca=2×0.25=0.50 moles of electrons =0.5 faradays of electricity. Hence, 0.5 Faradays of electricity are required to DEPOSIT 10 g of calcium from MOLTEN calcium chloride using inert ELECTRODES |
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| 12. |
Which of the following is not a strong acid? |
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Answer» Explanation: |
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| 13. |
What do atoms and molecules have in common ? |
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Answer» Answer: see answer its matter MARK me as BRAINLIEST and please FOLLOW me and subscribe to my YOUTUBE channel abiraj 718 |
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| 14. |
Why does a piece of paper burn with yellow flame? |
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Answer» Answer: Why does paper BURN with a YELLOW flame ? A yellow flame comes about when there is insufficient supply of oxygen. ... In this case the hydrocarbons do not burn completely, the temperature of the flame is lower than that of the blue flame. The yellow flame also leaves behind a black SOOT or residue. mark me as BRAINLIEST and please follow me and subscribe to my youtube channel abiraj 718 |
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| 15. |
As compared to water, glass is optically______ |
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| 16. |
Numericals for stoichiometry |
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Answer» Answer: Stoichiometry is the calculation of reactants and products in chemical reactions. Stoichiometry is founded on the law of conservation of mass where the total mass of the reactants equals the total mass of the products, leading to the insight that the relations among quantities of reactants and products typically form a RATIO of POSITIVE integers. This means that if the amounts of the SEPARATE reactants are known, then the amount of the product can be calculated. Conversely, if one reactant has a known QUANTITY and the quantity of the products can be empirically determined, then the amount of the other reactants can also be calculated. Explanation: |
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| 17. |
What is the full form of WWF ? |
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Answer» The full FORM of WWF is WORLD WRESTLING Federation. Explanation: Hope it helps you. |
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| 18. |
Name the properties of matter |
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Answer» Answer: The properties of MATTER include any TRAITS that can be measured such as an OBJECT density,,, color,, MASS |
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| 19. |
In order to predict whether or not a single replacement reaction takes place, you need to consult a ______.please help asap |
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Answer» FIND whether it is FEASIBLE....that is to find DELTA g or GIBBS free energy |
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| 20. |
Please solve my doubt given below in the attachment. Question number 6. Please answer me and i will mark as brainleast. |
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Answer» SODIUM: FORMULA of chloride - NaCl Nature of BONDING - Ionic Physical state of chloride - Solid PHOSPHORUS: Formula of chloride : PCl5 Nature of bonding : Covalent Physical state of chloride : Solid CARBON: Formula of chloride : CCl4 Nature of bonding : covalent Physical state of chloride : Liquid. I HOPE IT WILL BE HELPFUL PLEASE MARK ME AS BRAINLIST.... |
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| 21. |
→What is the relation between ionization potential and effective nuclear charge experienced by an electron in nth orbit?→ What is the general trend observed in ionization energy in alkali and alkaline earth metals?Useless answers will be reported✌️ |
Answer» ➠ AnSwer :-➝ 1st answer :-
➝ 2nd answer :-
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| 22. |
Okay this is the second tym am posting this question Pls no useless answers No Advertizing as an answer No writing of rubbish as an answer The answer Should not be 2 short but with calculations And d person who meets these requirements very well, i'll follow him/ her, give thanks and mark brainliest. Hu eva does any of the does nots I.ll report d person So d question goes (d) 20cm 3 of hydrochloric acid neutralized 25cm 3 0.1moldm -3 sodium trioxocarbonate(IV) solution, find (i) the concentration of hydrochloric acid in moldm -3 . (ii) the concentration of hydrochloric acid in gdm -3 . (H=1.00, Cl=35.5) The equation for the reaction: 2HCl + Na 2 CO 3 → 2NaCl + H 2 O |
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Answer» Explanation: आपकी खोज - 20CM 3 of hydrochloric acid NEUTRALIZED 25cm 3 0.1moldm -3 sodium trioxocarbonate(IV) SOLUTION, find (i) the concentration of hydrochloric acid in moldm -3 . (ii) the concentration of hydrochloric acid in gdm -3 . (H=1.00, Cl=35.5) The equation for the reaction: 2HCl + Na 2 CO 3 → 2NaCl + H 2 O - के लिए इमेज से जुड़ा कोई परिणाम नहीं मिला. सुझाव: जाँच लें कि सभी शब्दों की वर्तनी ठीक है. दूसरे कीवर्ड डालकर देखें. ज़्यादा सामान्य कीवर्ड डालकर देखें. कम कीवर्ड डालकर देखें. |
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| 23. |
Why can u see a beam of a cars headlight in fog but not in clear air |
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Answer» Because in the CLEAR there are less amount of particles and in the fog the fog accumulate at one plance and the molecule came closer to each ather and in clean AIR MOLECULES are AWAY from each other I hope this is right Thanks for my answer |
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| 24. |
Give reason paper is not considered as a pure substances |
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Answer» Remember that paper is made out of trees. Thus, paper is made mostly out of organic compounds: that is carbon, hydrogen and OXYGEN (C, H and O). Paper ALSO contains non organic materials to improve its properties. These may be CHALK (CaCO3) and kaolin clay (Al2Si2O5(OH)4). Titanium oxide (TiO2) is also commonly USED in paper for bleaching it. |
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| 25. |
Iron coated with paint or grease does not rust. |
Answer»
♣ CORROSION ♣:
Other methods of preventing rusting of Iron:-
Silver and Copper lose their lustre by gaining black and green coating of Silver sulphide and basic copper carbonate RESPECTIVELY. |
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| 26. |
A solution contains 60 gram of sugar in 500 gram of water calculate the concentration of solution in terms of mass by mass percentage of the solution |
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Answer» ANS in the ATTACHMENT |
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| 27. |
The product formed on heating nicotinic acid with calcium oxide is 1. pyrrole 2. furan 3. pyridine 4. thiophene |
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Answer» Answer: The product FORMED on heating NICOTINIC ACID with CALCIUM OXIDE is pyridine |
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| 28. |
Energy is either absorbed or liberated in a reaction and atoms, ions and radicals take part in areactionGive the differences between an atom, a radical and an ion with examples for each. |
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Answer» Answer: Explanation: A NOTABLE example of a free RADICAL is the HYDROXYL radical (HO•), ... Following recent nomenclature revisions, a part of a larger molecule is now called a ... Chlorine gas can be broken down by ultraviolet LIGHT to form atomic chlorine radicals. ... There are two reactions that are observed in the ionic case: |
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| 29. |
Solve it and answer the question |
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| 30. |
1.convert ethanol to n propyl alcohol |
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Answer» SEE ATTACHMENT..... .... |
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| 31. |
Electrolysis of acidulated water yields H2 at the cathode and O2 at the anode. In an experiment the total volume of H2 and O2 evolved during electrolysis Was found to be 16.8 ml at NTP what amount of electricity in coulumb was used in this experiment? |
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Answer» Answer: Assuming equal temperature and pressure for both GASES, the produced hydrogen gas has, THEREFORE, TWICE the volume of the produced oxygen gas. The number of electrons pushed through the water is twice the number of GENERATED hydrogen molecules and four TIMES the number of generated oxygen molecules |
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| 32. |
Ruttherford alpha particles scattering experiment result into discovery of |
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Answer» Rutherford's alpha-particle scattering EXPERIMENT was responsible for the discovery of atomic NUCLEUS. Nucleus CONTAINS most of the mass. Most of the atom has empty space. Explanation: |
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| 33. |
Find a,b,c with full explanation |
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Answer» Answer: |
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| 34. |
Which of the following can exists as asingal atom |
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Answer» Answer: 2.8. Elements can be made of ONE atom, LIKE He, or be ELEMENTAL molecules, such as hydrogen (H2), oxygen (O2), chlorine (Cl2), ozone (O3), and SULFUR (S8). Explanation: |
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| 35. |
Please Help me with this question fast (class 11) chemistry |
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| 36. |
Salt solition does not scatter a beam of light but milk does. Why? |
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Answer» Answer: Of salt solution are EXTREMELY small in SIZE. It is less than 1 nanometer.so such small particles cannot reflect light rays FALLING on them. Whereas Milk solution particles are bigger ENOUGH ( in between 1nm to 100nm) to scatter the light PASSING through it. Explanation: |
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| 38. |
Is water is covalent compound or ionic compound can you prove using electronegativity scale |
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Answer» WATERS SAID he will not be happy with the DECISION to make it |
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| 39. |
What are the values of ∆H and ∆V for positive deviation ideality? Give one example. |
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| 40. |
Brass alloys contain thata. 30% zn, 70% cu b. 40% zn, 60% cuc. 30% cu, 70% zn d. 50% zn, 50% cu |
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Answer» Answer: brass actually CONTAINS 66% copper and 34% ZINC but since there is no option for that the estimated value can be 30% zinc and 70% copper option A we have TAKEN estimated value of zinc as 30 because it is closer to 34 and copper value as 70 because it is closer to 66 hope that helps pls mark as brainliest and GIVE thanks |
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| 41. |
Please answer me friends |
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Answer» Answer: A SATURATED solution is a solution that contains the MAXIMUM AMOUNT of solute that is CAPABLE of being dissolved. ... An unsaturated solution is a solution that contains less than the maximum amount of solute that is capable of being dissolved Explanation: |
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| 42. |
When l= 4. what is the maximum number of orbitals of this type possible in a given electronshell (i.e. for a particular n value)?(a) 3(b) 5(C) 7(d) 9 |
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| 43. |
Nettle sting is the natural source of which acid |
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Answer» Answer: Nettle stings contain acid (formic acid) but they also contain histamine and other chemicals. The exact details are still unknown but it is the histamine that CAUSES the initial REACTION when you are STUNG. Dock LEAF sap contains a natural antihistamine, which helps to ease the STINGING sensation. Explanation: |
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| 44. |
The diameter of the molecules of substance is of the order of |
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Answer» The DIAMETER of a molecule, assuming it to be SPHERICAL; has a numerical value of 10^-8 centimeter multiplied by a factor DEPENDENT on the compound or element. |
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| 45. |
Indirect democracy function throough |
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Answer» Indirect democracy allows citizens to VOTE for representatives who then can create the laws of government on their behalf. It's a very efficient way to make laws while at the same time being RESPONSIVE to the PEOPLE through the election of representatives. Explanation: MARK as brainliest |
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| 46. |
18. Out of the following pairs of electrons, identify the pairs ofelectrons present in degenerate orbitals :(1) (a) n=3,1 = 2, m = -2, m,12(b) n=3,1 = 2, my = -1, m,12(i) (a) n=3,1 =1, mı =1, m, = + =(b) n = 3,1 = 2, m, =1, ms = +Ha Ha Ha Ha(ii) (a) n= 4,1 = 1, m, =1, m= + =2(b) n = 3,1 = 2, m/ = 1, m,1=+-21(iv) (a) n = 3,1 = 2, mı = + 2, m,1(b) n = 3,1 = 2, m1 = + 2, ms = + =2 |
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Answer» Answer: 1.168 Explanation: 15 THANK + FOLLOW = INBOX. |
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| 47. |
Addition of br on 2methylpropene gives |
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Answer» it depends on the medium.. |
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| 48. |
A given amount of co is oxidisedby x moles of Mno, in acidic medium.Calculate the moles of Cr, o requiredfor same amount of co(1) x/6(2) 5x/6(3) x/3(4) x/2 |
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Answer» The answer is 5x/6 MARK AS BRAINLIEST |
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| 49. |
Percent composition on N2S2 |
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Answer» percent composition on NITROGEN is 2 and sulphur is 2 N2S2 HOPE it helps |
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| 50. |
The no of structural isomers for the compound C6H 14 |
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Answer» C6H14 is Hexane it has 5 STRUCTURAL ISOMERS |
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