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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. |
What could Surriya do to stop a piece of iron from rusting? Suggest two ideas. |
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Answer» How to prevent iron from the process of rusting give two ways? How to prevent iron from the process of rusting give two ways?9 Ways to Prevent RUST How to prevent iron from the process of rusting give two ways?9 Ways to Prevent RustUse an ALLOY. Many outdoor structures, LIKE this bridge, are made from COR-TEN steel to REDUCE the effects of rust. ... How to prevent iron from the process of rusting give two ways?9 Ways to Prevent RustUse an Alloy. Many outdoor structures, like this bridge, are made from COR-TEN steel to reduce the effects of rust. ...Apply Oil. ... How to prevent iron from the process of rusting give two ways?9 Ways to Prevent RustUse an Alloy. Many outdoor structures, like this bridge, are made from COR-TEN steel to reduce the effects of rust. ...Apply Oil. ...Apply a Dry Coating. ... How to prevent iron from the process of rusting give two ways?9 Ways to Prevent RustUse an Alloy. Many outdoor structures, like this bridge, are made from COR-TEN steel to reduce the effects of rust. ...Apply Oil. ...Apply a Dry Coating. ...Paint the Metal. ... How to prevent iron from the process of rusting give two ways?9 Ways to Prevent RustUse an Alloy. Many outdoor structures, like this bridge, are made from COR-TEN steel to reduce the effects of rust. ...Apply Oil. ...Apply a Dry Coating. ...Paint the Metal. ...Store Properly. ... How to prevent iron from the process of rusting give two ways?9 Ways to Prevent RustUse an Alloy. Many outdoor structures, like this bridge, are made from COR-TEN steel to reduce the effects of rust. ...Apply Oil. ...Apply a Dry Coating. ...Paint the Metal. ...Store Properly. ...Galvanize. ... How to prevent iron from the process of rusting give two ways?9 Ways to Prevent RustUse an Alloy. Many outdoor structures, like this bridge, are made from COR-TEN steel to reduce the effects of rust. ...Apply Oil. ...Apply a Dry Coating. ...Paint the Metal. ...Store Properly. ...Galvanize. ...Blueing. ... How to prevent iron from the process of rusting give two ways?9 Ways to Prevent RustUse an Alloy. Many outdoor structures, like this bridge, are made from COR-TEN steel to reduce the effects of rust. ...Apply Oil. ...Apply a Dry Coating. ...Paint the Metal. ...Store Properly. ...Galvanize. ...Blueing. ...Powder Coating.
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| 2. |
Give the formal charge of following Molecule O3 |
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Answer» Answer: The FORMAL charge on the CENTRAL OXYGEN atom in O3 molecule is +1. |
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| 3. |
Calculate the molarity of NaOH solution prepared by dissolving its 4 gm in enough to form one litre of the solution (atomic mass of Na=23, O=16, H=1) |
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Answer» WEIGHT of NaOH=4g Molecular weight of NaOH=40G Volume of solution is 250ml Molarity = ? M= MW W
× Vinml 1000
M= 40 4
× 250 1000
0.4M Hope this will help youMARK me as brilliant |
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| 4. |
According to class tenth types of chemical equation |
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Answer» nfdjshcjvbkffihfgdjftwcifu5y |
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| 5. |
Give formula of aldehyde is |
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| 6. |
For the flow calorimeter just discussed, the following data are taken with water as the test fluid:–Flow rate = 4.15 g/s, t1= 0 °C, t2= 300 °and P2= 3 bar,Rate of heat addition from resistance heater = 12,740 W.The water is completely vaporized in the process. Calculate the enthalpy of steam at 300 °C and 3 bar based on H = 0 for liquid water at 0 °C |
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Answer» Explanation: Alexender please MARK as BEST ANSWER and THANK 26 Celsius pl |
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| 7. |
In a compound, A(Atomic weight = 12.5) is 25% and B (Atomic weight = 37.5) is 75% by weight. The Empiricalformula of the compound is : |
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Answer» COMPOUND MADE OF TWO ELEMENTS A AND B ARE FOUND TO BE CONTENT 25% A AND 75% B THE SIMPLEST FORMULA OF THE COMPOUND IS AB |
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| 8. |
THE COLOUR FUMES EVOLVED WHEN LEAD NITRATE IS HEATED.A. WHITEB.YELLOWC.GREEND.BROWN |
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Answer» Answer: brown Explanation: whn lead nitrate is heated, DECOMPOSITION REACTION occurs and PbO, NO2 and NO3 GASES are RELEASED the COLOUR of NO2 released is brown |
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| 9. |
Name two scientist who purposes that matter is made up to atoms? |
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Answer» here is UR answar the 2 SCIENTISTS are I. Dalton II. Democritus |
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| 10. |
Hex -1- ene reacts with hydrogen bromide in presence of hydrogen peroxide to give |
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Answer» Answer: 6wjfirififiufkkduitfydbcidkgd Explanation: wutkdiueusuduidjdiridjdi |
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| 11. |
Composition of air1) changes with change in percentage of gases2) remains fixed3) variable4) both (1) & (3) |
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| 12. |
If a body weight12N on the earth now much will it weight on the moon |
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Answer» Answer: Hence a body weighing 12N on the SURFACE of the moon will weigh six times more on the surface of the EARTH i.e 12N ∗ 6 = 72N. |
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| 13. |
Chemical bond in which Ions are involved. |
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Answer» Answer: IONIC bond, also called electrovalent bond, type of linkage FORMED from the electrostatic attraction between oppositely CHARGED ions in a chemical compound. Such a bond forms when the valence (outermost) electrons of ONE ATOM are transferred permanently to another atom. . . hope it will be helpful Mark me as a brainliest also like my answer (◕ᴥ◕) |
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| 14. |
Metals corrode mostly in which medium |
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Answer» Answer: The most common KINDS of corrosion result from electrochemical reactions. General corrosion occurs when most or all of the atoms on the same metal surface are OXIDIZED, damaging the ENTIRE surface. Most metals are easily oxidized: they tend to lose ELECTRONS to OXYGEN (and other substances) in the air or in water. |
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| 15. |
The chemical bond in which electrons are shared equally between similar non metal atoms. |
Answer» COVALENT BOND. |
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| 17. |
What is a cell?spam allowed |
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Answer» this is your answer |
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| 18. |
1. Silicon is produced for the chemical and electronics industries by the following reactions. Give the balanced equation for each reaction.a. SiO2(s)+C(s)->Si(s)+CO(g)b. Silicon tetrachloride is reacted with very pure magnesium, producing silicon and magnesium chloride. c. Na2SiF6(s)+Na(s) -> Si(s)+NaF(s)Please help me !!!!! |
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| 19. |
When we blow strongly over a candle it extinguishes because *O Our breath contains oxygenO Our breath contains carbon di oxideO Both of the aboveONone of the aboveo |
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Answer» When we blow STRONGLY over a candle it extinguishes because * O Our BREATH contains oxygen |
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| 20. |
What is electron affinity , explain it's trend in groups and periods. |
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Answer» Explanation: The electron affinity of an atom or molecule is DEFINED as the amount of energy RELEASED when an electron is attached to a NEUTRAL atom or molecule in the gaseous state to FORM a negative ion. |
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| 21. |
Complete the chemical equation related to the formation of sodium chloride• Positive ions are known as.• Negative ions are known as |
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Answer» Answer: Ionic bond, also called electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound. Such a bond forms when the VALENCE (outermost) ELECTRONS of one ATOM are transferred permanently to another atom. The atom that loses the electrons becomes a positively charged ion (cation), while the one that gains them becomes a negatively charged ion (anion). A brief treatment of ionic bonds follows. For full treatment, see chemical bonding: The formation of ionic bonds An ionic bond is actually the extreme CASE of a polar covalent bond, the latter resulting from unequal sharing of electrons rather than complete electron transfer. Ionic bonds typically form when the difference in the electronegativities of the two atoms is great, while covalent bonds form when the electronegativities are similar. Compare covalent bond. |
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| 22. |
5.calculate the relative molecular mass of CO2,NaOH. |
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Answer» Molecular FORMULA of CARBON dioxide =CO2 The atomic mass of Carbon =12. The atomic mass of Oxygen =16. =1× atomic mass of carbon +2× atomic mass of oxygen. Hence the RELATIVE molecular mass of carbon dioxide =44. |
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| 23. |
What do you understand by diversity |
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Answer» It means understanding that each individual is unique, and recognizing our individual differences. These can be ALONG the dimensions of race, ETHNICITY, gender, sexual orientation, socio-economic status, age, physical ABILITIES, RELIGIOUS beliefs, political beliefs, or other ideologies.HOPE IT HELPS |
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| 24. |
11. One of the following elements has an atomicity of one'. This element is: |
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Answer» Answer: In PHYSICS, a force is any interaction that, when unopposed, will CHANGE the motion of an OBJECT. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can ALSO be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity. Explanation: In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity.In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity.In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity.In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity. |
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| 25. |
What is present in rayon fibre |
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Answer» RAYON is a REGENERATED cellulose fiber that is MADE from natural sources of cellulose, such as wood and RELATED agricultural products. It has the same MOLECULAR structure as cellulose. |
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| 27. |
Calculate the molality and molarity of 98% sulphuric acid (w/w) solution having density1.22g/ml. |
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Answer» SEE this PHOTO &their answer of your questions. Explanation: hope this QUESTION will be helpful for you! |
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| 28. |
A reaction between 'X' and 'Y' forms compound 'Z'. 'X' loses an electron and 'Y' gains anelectronA) Show the formation of compound Z. What type of compound is it? Write two propertiesshown by compound Z.B) Compare the properties of metals and non-metals on the basis of the following:0 Malleability and ductility:(ii) Conductivity;(iii) Nature of the oxide formed by them. |
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Answer» Compound Z does not show the PROPERTY of “Has LOW melting point”. As compound Z is formed because of transfer of electrons between X and Y, hence Z is an ionic compound. plz FOLLOW me❤❤ |
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| 29. |
Why potassium iodide is used in arsenic limit test |
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Answer» Answer: Limit TEST of ARSENIC is BASED on the reaction of arsenic gas with hydrogen ion to form yellow stain on mercuric chloride paper in presence of reducing agents like potassium iodide. ... ARSENIOUS ACID is further reduced to arsine (gas) by hydrogen and reacts with mercuric chloride paper to give a yellow stain. |
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| 30. |
Which is the particle that differs in its number in these atom? b. Complete the tableUsesIsotopesCarbon-14Deuteriumlodine - 131Uranium -235USES??? |
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Answer» Explanation: Chapter Head Table of Contents Glossary The Isotopes of Hydrogen It is often useful to study the simplest system. Therefore, hydrogen, the simplest nucleus, has been studied extensively. The isotopes of hydrogen show many of the effects found in more complicated nuclei. (The word isotope refers to a nucleus with the same Z but different A). There are three isotopes of the element hydrogen: hydrogen, deuterium, and tritium. How do we distinguish between them? They each have one single proton (Z = 1), but differ in the number of their neutrons. Hydrogen has no neutron, deuterium has one, and tritium has two neutrons. The isotopes of hydrogen have, respectively, mass numbers of one, two, and three. Their nuclear symbols are therefore 1H, 2H, and 3H. The atoms of these isotopes have one electron to balance the charge of the one proton. Since chemistry depends on the interactions of protons with electrons, the chemical properties of the isotopes are nearly the same. The curve of the AVERAGE binding energy per nucleon. Energy may be released as a packet of electromagnetic radiation, a photon. Photons created in nuclear processes are labeled gamma rays (denoted by the Greek letter gamma, g. For example, when a proton and neutron combine to form deuterium, the reaction can be written 1n + 1H Æ 2H + g. Energy must balance in this equation. Mass can be written in atomic mass units (u) or in the equivalent energy units of million electron-volts divided by the SQUARE of the speed of light (MeV)/c2. (From Einstein’s mass-energy equivalence equation, E = mc2, u = 931.5 MeV/c2.) The mass of the deuterium nucleus (2.01355 u) is less than the sum of the masses of the proton (1.00728 u) and the neutron (1.00866 u), which is 2.01594 u. Where has the missing mass (0.00239 u) GONE? The answer is that the attractive nuclear force between the nucleons has created a negative nuclear potential energy–the binding energy EB–that is related to the missing mass, D m (the difference between the two masses). The photon released in forming deuterium has an energy of 2.225 MeV, equivalent to the 0.00239 u required to separate the proton and neutron back into unbound particles. The nuclear decay photons are, in general, higher in energy than photons created in atomic processes. When tritium is formed by adding a neutron to deuterium, 1n + 2H Æ 3H+ g, a larger amount of energy is released–6.2504 MeV. The greater binding energy of tritium compared to deuterium shows that the nuclear potential energy does not grow in a simple way with the addition of nucleons (the total binding energy is roughly proportional to A). The binding energy per nucleon continues to grow as protons and neutrons are added to CONSTRUCT more massive nuclei until a maximum of about 8 MeV per nucleon is reached around A = 60, past which the average binding energy per nucleon slowly decreases up to the most massive nuclei, for which it is about 7 MeV. How does a nucleus, which can have up to approximately 100 protons, hold itself together? Why does the electrical repulsion among all those positive charges not cause the nucleus to break up? There must be an attractive force strong enough to be capable of overcoming the repulsive Coulomb forces between protons. Experiment and theory have come to recognize an attractive nuclear interaction that acts between nucleons when they are close enough together (when the range is short enough). The balance between electromagnetic and nuclear forces sets the limit on how large a nucleus can grow. |
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| 31. |
What is meant by shielding effectand also explain it's trend in the periodic table. |
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Answer» ELECTRON shielding describes the ability of an atom's inner ELECTRONS to shield its positively-charged NUCLEUS from its valence electrons. When moving to the right of a PERIOD, the number of electrons increases and the strength of shielding increases.15-Aug-2020 |
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| 32. |
Krupa2120106 s send me the notes of some basic concepts of chemistry |
Answer» *BASIC CONCEPTS IN CHEMISTRY *
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| 33. |
[co(nh2)2 (py)2 (nh3)2]no3 iupac name? |
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| 34. |
Ques. Three elements X, Y, and Z with their atomic numbers are given below:ElementAtomic NumberX16Y18Z19Examine the above data and answer the following questions:A) How many valence electrons are present in Y? What is its valency?B) Write the position of X and Z in the Modern Periodic Table.C) Write the molecular formula formed between X and Z |
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Answer» a) 1 b) 16TH group and 3rd period , 18th group and 3rd period c) x-sulphar and z- potasium product is pso4 |
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| 35. |
CH3CH2CH2OH bond line formula |
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Answer» Propanaol . .. ..
. ..
. . . . . . . . . . . . . . . .. . |
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| 36. |
How many grams of Li are present in 5.98 moles? |
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Answer» Given no. of moles = 5.98 Grams = (7*5.98) g = 41.86 g The AMOUNT of Li is 41.86 g. I hope this helps. |
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| 37. |
Which of the following is not an application of nanomaterials?a) TV and computer monitorsb) Cardiologyc) Magnetic Resonance Imaging (MRI)d) Sunscreens and fuel cells |
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Answer» CARDIOLOGY is not an APPLICATION of NANOMATERIALS |
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| 39. |
Effect of acid rain on iron and marne write balance chemical eq |
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Answer» Explanation: Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it has elevated levels of HYDROGEN ions (low pH). It can have harmful effects on plants, aquatic animals, and infrastructure. Acid rain is caused by emissions of sulphur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids. Some governments have made efforts since the 1970s[1] to reduce the release of sulfur dioxide and nitrogen oxide into the atmosphere with positive RESULTS. Nitrogen oxides can also be produced naturally by lightning strikes, and sulphur dioxide is produced by volcanic eruptions.[2] Acid rain has been shown to have adverse impacts on forests, freshwaters, and soils, killing insect and aquatic life-forms, causing paint to peel, corrosion of steel STRUCTURES such as bridges, and weathering of stone buildings and statues as well as having impacts on human health.[3] |
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| 40. |
A general precaution to be followed to prevent hazard when working with power tools |
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Answer» Answer: Never CARRY a TOOL by the cord or hose. Never yank the cord or the hose to disconnect it from the receptacle. Keep cords and hoses away from heat, oil, and SHARP edges. Explanation: hope it HELPS you |
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| 41. |
5.Which one of the following compounds will give (d) and (() form in Spl reaction (as major product) ?CH,CH.H Н.-cheie(1) CH-C-Br(2) CH-C-BrHI(4) CH-CH-C-BICH, CH(3) CH-C-BrICH1CH,C,H,56 |
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Answer» jczkgxkyxlydkystk Explanation: fJfzjgzkgxgmxjxjgzkgxkgz |
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| 42. |
Explain the role of major food stups. |
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Answer» A CENTRAL GOAL of SNAP is to alleviate hunger and MALNUTRITION by increasing resources for the PURCHASE of food for a nutritious diet. |
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| 43. |
How many protans are present in heavy water? |
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Answer» Heavy WATER CONTAINS 10 protons, 10 electrons and 10 neutrons. |
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| 44. |
Here is the ques..pls solve step by step .. |
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Answer»
❾⓿❻❹❷❶❹❾⓿❻ ☎️Wishphilip //CUSTOMER //CARE //number//☎️❻❷❾❾❼❶⓿❶❼❹ |
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| 45. |
What is the pipe in which viscose (Cellulose + Alkaline Solution) is put and rayon is produced called? |
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Answer» Answer: Many types and grades of VISCOSE fibers and films exist. Some imitate the feel and texture of natural fibers such as silk, wool, cotton, and linen. The types that resemble silk are often called artificial silk. The fibre is USED to make textiles for clothing and other PURPOSES.[3] Explanation: Rayon PRODUCTION involves solubilizing cellulose. One popular method involves use of alkali and carbon sulfide.[4][5] Another method involves using ammoniacal SOLUTIONS of copper salts. Yet another route, the lyocell process, relies on a special solvent.[6][7] |
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| 46. |
259609612.5On the basis of these observations what conclusions could the geneticists make about the probablstructure of the nucleosome in the chromatin of this plant?Answer:AL |
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| 47. |
Which was the first alloy used by humans in prehistoric times |
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Answer» Answer: In fact, ONE of the major 'ages' or stages of human history is named after a copper alloy: BRONZE. Copper was the FIRST metal used by man in any quantity. Explanation: I hope it is HELPFUL to you |
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| 48. |
The hybridization of nitrogen in primary amine is _________? |
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Answer» sp³ Hybridized 3 are involved in formation of sigma BOND with H or ALKYL GROUP, and fouryh is a lone pair. Explanation: For additional information I have shared an ATTACHMENT |
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| 49. |
Find the odd pair given below amphere metre Kelvin candela |
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Answer» Answer: Communication is simply the act of transferring information from one place, person or GROUP to another. Every communication involves (at LEAST) one sender, a MESSAGE and a recipient. ... These include our emotions, the CULTURAL SITUATION, the medium used to communicate, and even our location. |
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| 50. |
Can sodium benzoate and aspartame be used in one product as preservative and sweetener respectively or can aspartame serve as both sweetener and preservative. |
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Answer» Artificial sweeteners or intense sweeteners are sugar substitutes that are used as an alternative to table sugar. They are many times sweeter than natural sugar and as they contain no calories, they may be used to control weight and obesity. Extensive SCIENTIFIC RESEARCH has demonstrated the safety of the six low-calorie sweeteners currently approved for use in foods in the U.S. and Europe (stevia, acesulfame-K, aspartame, neotame, saccharin and sucralose), if taken in acceptable quantities daily. There is some ongoing debate over whether artificial sweetener USAGE poses a health threat .This review article aims to cover thehealth BENEFITS, and risks, of consuming artificial sweeteners, and discusses natural sweeteners which can be used as alternatives.
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