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. |
Q is given in the image please answer it |
| Answer» ADAPTATION can either OCCUR in anticipation of change (anticipatory adaptation), or be a response to those changes (REACTIVE adaptation). Most adaptation being implemented at present is responding to current climate trends and variability, for example INCREASED use of artificial snow-making in the European Alps. | |
| 2. |
First Asian country to host the Asian cup cricket? note: only name the country no copied answers |
| Answer» UNITED ARAB EmiratesExplanation:MARK me as a BRAINLIEST PLZ | |
| 3. |
Why is it necessary to repeat the experiment in each case twise |
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Answer» Repeating an EXPERIMENT more than once helps determine if the data was a fluke, or REPRESENTS the normal case. It helps guard against jumping to conclusions without enough evidence. The number of repeats depends on many FACTORS, including the SPREAD of the data and the AVAILABILITY of resources. |
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| 4. |
What happens when NaOH is added to aluminium nitrate? |
| Answer» ODIUM hydroxide is added to a cylinder of ALUMINUM nitrate, precipitating out aluminum hydroxide. When additional base is added, the PRECIPITATE dissolves. The reactions can then be REVERSED with the ADDITION of hydrochloric acid. The precipitate will reappear and then redissolve. | |
| 5. |
METAL+WATER=METALOXIDE+HYDROGEN and METAL+ACID=SALT+HYDROGEN (i) is this reactions are similar or not? (ii)if yes or no why? (iii)is water react like acid in this reaction or not.why? |
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Answer» METAL+WATER=METAL OXIDE+HYDROGEN and METAL+ACID=SALT+HYDROGEN are not similar as one they form different products and water does not react LIKE acid. EXPLANATION:For e.g-: Na + O2 gives Na2O + H2 where as Na + HCL gives NACL + H2 |
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| 6. |
The rate of a chemical reaction is expressd as : Rate = K[A]2 [B].The order of the reaction would be -A. 2B. 3C. 1D. 0 |
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Answer» If RATE LAW for a reaction is expressed as r=k[A] p [B] q then order of reaction with respect to A is 'p' order of reaction with respect to B is 'q' overall order of the reaction is 'p+q'. Hence, for the Rate Law : r=k[CL 2 ][NO] 2 order of reaction with respect TOCL 2 is ′ 1 ′ order of reaction with respect to NO is ′ 2 ′ overall order of the reaction is ′ 3 ′ .Explanation: |
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| 7. |
The IUPAC name of the following compound isCH3 CHCI CH2 CH2 COOH |
| Answer» CH3 CARBON DIOXIDE CHCL carbon MONOXID | |
| 9. |
25. In the reaction N. + 3H, 2NH, +cals, if temperature increases, thenCon D70(A) formation of NH, increases(B) formation of NH, decreases(C) no effect on the formationof ammonia(D) none of these2 |
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| 10. |
98729. Ra/vqRT & Hal (VBT) % 30%IT 4 HAI =o(NH)613*gta saafa, wafa Ho 3 CoF61337641(: |
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Answer» 240Explanation:ykearhayksajta86wqyiyearywryiseay8kdggryaek4ue5uq3q5i35iqw5u5uq35uq3u2ya |
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| 11. |
Calculate the number of moles in the following:12 g of 02, 22 g of CO2 |
| Answer» 1) 3/4 N2) 0.5 NN is AVOGADRO no. | |
| 12. |
D) क्यों नाइट्रोमेथेन NaOH में घुलनशील है?Why Nitromethane is soluble in NaOH? |
| Answer» C medium (NAOH) , H-atom from alpha-C gets REMOVED creating negative charge. - This CREATES partial double bond character C-N bond and gets stabilized by resonance. - Therefore, nitroethane is soluble in sodium HYDROXIDE solution. * Long chain nitroalkanes are less soluble in NaOH soln. | |
| 13. |
The standard enthalpy of formation of acetic acid,carbon dioxide, water are 491.6kJ/mol, -285.8 kj/mol, -393.5kJ/mol respectively.calculate the standar enthalpy of combustion of acetic acid. |
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Answer» യയടചഏങഊആഐഈഏഡണഗദഅഔങഓങണഡങണചണങതExplanation:ണഇതഈഓങണങണചദഓഅഓണആലചലബലബണങണങണങണങണണങണങണങണണങണങണങണഈഐഅദദങണങലബડઙઙણઙઓઙટડઙડઇતઙઍઍઙલઃઅદદnsbskaksmqldjznണണങ |
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| 14. |
9. carbon compound class 10th1. Explain the following terms withexample.a. Structural isomerismb. covalent bondc.Hetero atom in a carbon compound d. Functional groupe. Alkanef. unsaturated hydrocarbong. homopolumerh. Monomeri. Reductionj. Oxydant |
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Answer» ctural isomerism:- Compounds having same molecular formula but different molecular structures.eg:-Butane and Isobutane(C H ) 4 10 b) Covalent bond:-It is a chemical bond in which pairs of electrons are shared between two atoms.eg:-water and diamondc) Hetro atom in a CARBON compound:- It is a compound formed by replacement of carbon and hydrogen by HETEROATOM in a compound.eg:-oxygend) Functional group:- an atom or a group of atoms present in a molecules,which determine the characteristics property of the organic compounds is called functional group.eg:-alcohol(OH)e) AlkaneIt is a organic compounds that consists single BOUNDED carbon and hydrogen atoms.eg:-methane and heptanef) Unsaturated hydrocarbon:-It is a hydrocarbons that have double or triple covalent bonds between adjacent carbon atoms.eg:-alkaneg) homopolymer:-a polymer consists of identical monomer units.eg:-PVC with vinyl chloride.h) Monomer:-It is a simple molecule with two or more binding sites.eg:-glucose,amino acidI) Reduction:-It is a gain of electrons.eg:-iron reacts with oxygenj) Oxydant:-It is a loss of electrons.eg:-METAL reacts with oxygenI HOPE THIS ONE HELPS YOU(◍•ᴗ•◍) |
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| 15. |
When two or more compounds differ in the position of substituent atom or functional group on the carbon skeleton, theyare called |
| Answer» TION:They are called POSITIONAL isomers SINCE only rhe POSITION of functional group is CHANGED | |
| 16. |
Section C: Chemistry 1. What is the relationship between the following pair of chemical entities?CH:H3COH3a. diastereomerb. enantiomerc. lautomerd. conformer |
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| 17. |
What happens to E.M.F on dipping a sheet of copper in anode half cell of Daniel cell?? |
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Answer» The definitions of electrical units that were proposed at the 1881 International Conference of Electricians were DESIGNED so that the electromotive force of the Daniell cell would be about 1.0 volts. With contemporary definitions, the STANDARD potential of the Daniell cell at 25 °C is ACTUALLY 1.10 V.Explanation:hope it helps...mark as BRAINLIEST |
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| 20. |
1. for the first order reaction is 0-632(A)(B)k0-683k0-863(C(D)0.10k k |
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Answer» I cant GIVE ANSWER of this question BCZ this question is too LONG |
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| 21. |
12, In the following reaction rate constant is 1.2x10-2 Ms inverse 1 A gives rise to B. What is concentration of B after 10 and 20min, if we start with 10m of A?(4) 7.2M (B) 10 M) |
| Answer» KAL BATA doonga BROTHER | |
| 22. |
Bond angle in PF3 is smaller than that of PCL3 Explain |
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Answer» tral atom phosphorus is sp3 hybridized. ... Higher the ELECTRON DENSITY of phosphorus more will be the lone pair-bond pair repulsion. The GREATER the repulsion the more is the bond angle. THUS the bond angle of PF3 is lowest and the bond angle of PI3 is highest.Hope it helps:) |
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| 23. |
E. In the suction N, BH, - 2NH the ratio by volume of N, H, andis 1:32 This illustrates the law of |
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Answer» hjfrjmhfdgjhExplanation:mnvddfhkkhff |
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| 24. |
Theare used to dye cellulose fibers directly without a mordant. |
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Answer» Reactive dyes are by FAR the best choice for dyeing cotton and other cellulose FIBERS at home or in the ART studio. DISPERSE dyes were originally DEVELOPED for the dyeing of cellulose acetate, and are water-insoluble.Explanation: |
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| 25. |
What is equivalent conductance |
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Answer» ivalent conductance of an electrolyte is defined as the conductance of a volume of solution containing one equivalent weight of DISSOLVED substance when placed between TWO parallel electrodes 1 CM apart, and LARGE ENOUGH to contain between them all of the solution. |
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| 26. |
Is defined as the number of molesof solute in 1 Kg of the solvent. |
| Answer» EXPLANATION:Molality is a PROPERTY of a solution and is defined as the number of moles of solute per kilogram of SOLVENT | |
| 27. |
12, In the following reaction rate constant is 1.2x10-2 M57 A B. What is concentration of B after 10 and somin, if we start with 10m of A?(4) 7.2M (B) 10 M) |
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Answer» seasonal FLU SYMPTOMS are not uncommon in the MORNING and SEE if you can find me in the morning and see if you can find me in the morning and see if you can find me in the morning and see if you can find me in the morning and see if you can find me in the morning |
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| 28. |
5. The metal oxide which cannot be reduced by hydrogen is(a)PbO(b) Cuo(c) CaO(d) FeO |
| Answer» B) CaOExplanation:HOPE this ANSWER HELP you | |
| 29. |
Topic : speed of chemical reactionsubject : chemistryplease help |
| Answer» HELLO FRIENDS GOOD AFTERNOON | |
| 30. |
B Which of the following compounds can NOT demonstrate the law of multipleproportionsa. NO, NOb.CO.COVar |
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Answer» I'm pogivavabaExplanation:your UGLY okjsnsnabbab |
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| 31. |
Subject : chemistrytopic : speed of chemical reaction |
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| 32. |
Calculate oxidatiom number if (cr(Nh3)6) +3 |
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Answer» I AM SURE THAT IS CORRECT ANSWER AND PLEASE MARK ME BRAINLIST ANSWER |
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| 33. |
Examples of (1) monobaric acids lii Give twoacid (iilit ribarraionic equations.dibass.acids & Supportsupport your unswer by |
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Answer» Example: HYDROCHLORIC acid, nitric acid, acetic acid. Dibasic acid- Dibasic acids are acids that furnish TWO hydrogen ions (H+) per molecule in WATER. |
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| 35. |
Copper oxide can also be reduced by carbon. Write an equation for the reaction. |
| Answer» COPPER oxide is reduced by carbon oxide and hydrogen, but the latter is ALSO adsorbed onto oxide-free copper particles and gold.CUO Copper(II) oxide is a metal oxide that has the formula CuO. It has an IONIC structure. It contains a copper(2+). Cupric oxide, or copper (II) oxide, is an inorganic compound with the CHEMICAL formula CuO.Explanation: | |
| 36. |
C. Which of the following temperature will read the same value on celsius andFahrenheit scales.b. + 40°d. -20°to current isa.- 40°c. -80° |
| Answer» WER is -40 DEGREES... | |
| 37. |
COMPARISON OF IONISATION AND DISSOCIATION?????? |
| Answer» IONIZATION: Ionization is the process by which atoms or molecules get a positive or NEGATIVE CHARGE. DISSOCIATION: Dissociation is the breakdown of a substance into smaller particles such as atoms, ions or molecules...:) | |
| 38. |
5. The metal oxide which cannot be reduced by hydrogen is PbOor CaO |
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Answer» The metal OXIDE which cannot be reduced by hydrogen is (SODIUM oxide, COPPER oxide).MARK MY ANSWER AS BRAINLIST |
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| 39. |
What is ph in given lines |
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Answer» PH, quantitative measure of the acidity or basicity of aqueous or other liquid solutions. The term, WIDELY used in chemistry, BIOLOGY, and agronomy, translates the values of the concentration of the hydrogen ion—which ordinarily ranges between about 1 and 10−14 gram-equivalents per litre—into NUMBERS between 0 and 14 |
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| 40. |
Describe two methods of preparation of Ethylene. Give equation for the reactions of ethylene with the following a)Ozone b)Hypohalous acid c)Cold and dil.alk.KmnO4 d)Bromineomine |
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| 41. |
a sample of commercial concentrated hydrochloric acid is 11.8m hydrochloric and has a density of 1.190g/ml calculate the mass percent of hydrochloric and the molality of hydrochloric |
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Answer» Adaptation can either occur in ANTICIPATION of change (anticipatory adaptation), or be a response to those CHANGES (reactive adaptation). Most adaptation being implemented at PRESENT is responding to CURRENT climate trends and variability, for example increased use of artificial snow-making in the European ALPS. |
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| 42. |
2.9 Which one of the following is a redox reaction ?(A) H, - Br, + 2HB(B) 2NaCl + H,SOA - Na,so+ 2HCI(C) HCI + AgNO, = AgCl + HNO,(D) NaOH + HCI = NaCl + H2O |
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Answer» socialgamecockMichealjalapenoirritated |
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| 43. |
What is chemical reaction explain it with types |
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Answer» tion:The FIVE basic types of chemical reactions are combination, decomposition, single-replacement, double-replacement, and combustion. Analyzing the reactants and PRODUCTS of a given REACTION will allow you to place it into one of these categories. Some reactions will fit into more than one CATEGORY. |
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| 44. |
Please answer hbtr pltrsdxcvbnm,mnbvcxcvbnm,lkjhgvcxcvbnm,mcxzxcvb |
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Answer» 1) a) SUBLIMATION b) IRON c) steam d) salt2) a) SOLVENT b) supernatant liquid c) EVAPORATION d) magnetic SEPARATION |
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| 45. |
What do you understand by the term "basicity of an acid |
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Answer» tion:Basicity of an acid is the number of HYDROGEN ions which can be produced by one molecule of acid. e.g. Acetic acid is monobasic in NATURE as it can lose one proton or hydrogen ATOM to FORM acetate ion. |
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| 47. |
What are the First 30 elements of periodic table with symbol,atomic no., atomic mass.. Plz tell me |
| Answer» ATOMIC NUMBER ELEMENT ATOMIC MASS1 HYDROGEN 1.0082 Helium 4.00263 Lithium 6.944 BERYLLIUM 9.01 | |
| 48. |
What is Le-Chatelier’s principle? Discuss its application for the industrial synthesis of Ammonia. (Haber’s process) |
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| 49. |
What is the manimum number of electionswhich can be acommodated in the Kshellof an atom 2 |
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Answer» 2 electroneExplanation: 2 electrons can be ACCOMMODATED in the K SHELL of an ATOM. |
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