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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your Science knowledge and support exam preparation. Choose a topic below to get started.
| 4601. |
0.7.8.ifferentiatebetween 'prokaryotic' andkaryotic' cells. |
| Answer» <p>The difference between the structure of prokaryotes and eukaryotes is so great that it is considered to be the most important distinction among groups of organisms.</p><p>The most fundamental difference is that eukaryotes do have "true" nuclei containing their DNA, whereas the genetic material in prokaryotes is not membrane-bound.</p><p>Structure and contents of a typicalGram-positive bacteriumcell (a prokaryotic cell)</p><p>In eukaryotes, the mitochondria and chloroplasts perform various metabolic processes and are believed to have been derived from endosymbioticbacteria. In prokaryotes similar processes occur across the cell membrane; endosymbionts are extremely rare.</p><p>The cell walls of prokaryotes are generally formed of a different molecule (peptidoglycan) to those of eukaryotes (many eukaryotes do not have a cell wall at all).</p><p>Prokaryotes are usually much smaller than eukaryotic cells.</p><p>Prokaryotes also differ from eukaryotes in that they contain only a single loop of stable chromosomal DNA stored in an area named the nucleoid, while eukaryoteDNAis found on tightly bound and organised chromosomes. Although some eukaryotes have satellite DNA structures called plasmids, these are generally regarded as a prokaryote feature and many important genes in prokaryotes are stored on plasmids.</p><p>Prokaryotes have a larger surfaceareato volume ratio giving them a higher metabolic rate, a higher growth rate and consequently a shorter generation time compared to Eukaryotes.</p><p>Genes</p><p>Prokaryotes also differ from eukaryotes in the structure, packing, density, and arrangement of their genes on the chromosome. Prokaryotes have incredibly compact genomes compared to eukaryotes, mostly because prokaryote genes lack introns and large non-coding regions between each gene.</p><p>Whereas nearly 95% of the human genome does not code for proteins orRNAor includes a gene promoter, nearly all of the prokaryote genome codes or controls something.</p><p>Prokaryote genes are also expressed in groups, known as operons, instead of individually, as in eukaryotes.</p><p>In a prokaryote cell, all genes in an operon(three in the case of the famous lac operon) are transcribed on the same piece of RNA and then made into separate proteins, whereas if these genes were native to eukaryotes, they each would have their own promoter and be transcribed on their own strand of mRNA. This lesser degree of control overgene expressioncontributes to the simplicity of the prokaryotes as compared to the eukaryotes.</p> <p>in prokaryotes cell there is no distinact nucleus & cell organellsin eukaryotes there is distinct nucleus & other cell organelles are present</p> | |
| 4602. |
Red Blood Cells• Write a note on Red blood cells and White blood cells?ollsbloom s also called as |
| Answer» <p>White blood cellsprotect the body from infection. They are much fewer in number thanred blood cells, accounting for about 1 percent of your blood. The most common type ofwhite blood cellis the neutrophil, which is the "immediate response" cell and accounts for 55 to 70 percent of the totalwhite blood cell</p> <p>Red blood cellstransport oxygen to your body's organs and tissues.White blood cellshelp your body fight infections. Platelets help yourbloodto clot.</p> <p>red blood cells transport oxygen to your body organs and tissues white blood cells help your body fight infections platelets help your blood to clot.</p> <p>RBC blood transport oxyzento all part of the body and also transport the released carbon dioxide since WBC protect the body from the mirorganism </p> | |
| 4603. |
B. Give the full forms of the following NGOs.1. APD-BBA-CPH -4. DCI -5. PWW- |
| Answer» <p>1. the association of people with disability 2. bachelor of business administration certificate in public health 4. defense for children international 5. parents were watching </p> <p>1.the association of people with disability.2.bachelor of business administration certificate in public death.4. defense for children international5.parent were watching3.certificate for public health...</p> <p>1. The Association of People with Disability.</p><p>2. Bachelor of Business Administration </p><p>3. Certificate in Public Health.</p><p>4. Defense for Children International.</p><p>5. Parents Were Watching. </p> | |
| 4604. |
Which of the following joints is immovable?(a) Shoulder and arm(b) Knee and joint(c) Upper jaw and skull(d) Lower jaw and upper jaw |
| Answer» <p>c) is the correct option </p> | |
| 4605. |
State Biot-Savart’s law in vector form expressing the magnetic field due to an element dl carrying current 7 at a distance r from the element. |
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| 4606. |
75. The electronic configuration of an element Z is 2, 8, 8.(a) What is the atomic number of the element ?(b) State whether element Z is a metal or a non-metal(c) What type of ion (if any) will be formed by an atom of element Z ? Why ?(d) What is special about the outermost electron shell of the atom of this element(e) Give the name and symbol of element Z( Name the group of elements to which Z belongs. |
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| 4607. |
levels of pollutuolthink that isolating these activities to speclhe allareas would help in reducing pollution?l l6. Write a note on how forests influence the quality of our air,soil and water resources. |
| Answer» <p>Foreststake up this carbon dioxide for the manufacture of their food and release oxygen to the atmosphere after photosynthesis. In this way they are helpful in cleaning theair. (a) The deep-rooted plants of theforestsare helpful in holdingsoilparticles tightly. In this wayforestshelp in reducingsoilerosion.</p> | |
| 4608. |
solid is dissolved in water. How will you get the solid back from water? |
| Answer» <p>If your mixture is a solution, such as saltywater, then filteringwillnot separate the salt from thewater. Instead, by heating the soluton the solvent (water) evaporates leaving the solid(salt) behind. This is possible since the two substanceshave different boiling points.</p> | |
| 4609. |
25. To which period and group of the modern periodic table does the elementhaving Z = 16 belong? How can it complete its octet to form a stable ion?Is it a metal or a non-metal? Explain.4 |
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| 4610. |
water stored in the ground is much more than thatnd lakes of the world. IT/Fla) The fresh(b) Water shortage is a problesn laced only by people lving in rural(c) Water from rivers is the only source for irrigation in thepresent in the rivers aareas. (T/Ffields. (T/F |
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| 4611. |
I.Write the balanced chemical equation for the following reactionCalcirm hydroxide+ ca rbon dioxide → Calcium carbonate+ water |
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| 4612. |
\begin{array} { l } { \text { State Boyle's law, Charle's law and Agadro's } } \\ { \text { haw and derive ideal gas equation. } } \end{array} |
| Answer» <p>1.The law itself can be stated as follows: For a fixed amount of an ideal gas kept at a fixed temperature, pressure and volume are inversely proportional. Or Boyle's law is a gas law, stating that the pressure and volume of a gas have an inverse relationship, when temperature is held constant.</p><p>2.Charles's law is an experimental gas law that describes how gases tend to expand when heated. A modern statement of Charles's law is: When the pressure on a sample of a dry gas is held constant, the Kelvin temperature and the volume will be in direct proportion.</p><p>3.Avogadro's law is an experimental gas law relating the volume of a gas to the amount of substance of gas present. The law is a specific case of the ideal gas law. A modern statement is: Avogadro's law states that, "equal volumes of all gases, at the same temperature and pressure, have the same number of molecules."</p> | |
| 4613. |
thesolubilityofH,SinwateratSIPis0.195m, calculate Henry's law constant2.7 Henry's law constant for CO2 in water Is 1.67x10 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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| 4614. |
A body weighs 20gm in air, 12gm in liquid and 10gmin water. Calculate the relative density of the liquidand the body. |
| Answer» <p>Weight of the body in air = 20gf ( Wa)</p><p>Weight of the body in water = 10gf ( Ws)</p><p>Weight of the body in liquid =12gf ( Wl)</p><p>Now,</p><p>The loss of weight in the water = 20 - 10 or, 10 gf</p><p>So the relative density of the body is = Wa / ( wa - ws )</p><p>= 20 / 10</p><p>= 2</p><p>2) The weight loss in liquid = 20 - 12 or, 8 gf</p><p>So the relative density of the liquid is =( Wa - Wl ) / ( Wa - Ws )</p><p>= 8 / 10</p><p>= 0.8</p> | |
| 4615. |
Why should magnesium ribon be cleaned hefore barning in air?y should magnesium ribbon be cleaned before burning in air?lnver of magnesium oxide on its sur |
| Answer» <p>bockachoda bbhfgdj I dkeckxkxjrnr I jf k kx know kfkkgk g</p> <p>hgfuylaylzuldldulckcxkxxuld ckcjxjxkcl ckdiztnaykdleur ldulfl email d</p> | |
| 4616. |
31,| (C) Alipi.alie VIi cIIIIIII५ ८ ५.५ ] (D)) (विन में से कौन असन याक ?)27. Whicli of the following is an unsaturated comn(D) C,H० ।(A) C,1,(B) CH,(C) C,1,dis (जब सोडियम को शुष्क अमोनिया के28. When sodium is heated in dry ammonia, the compound formed isगर्म किया जाता है तो क्या बनता है?)(A) Sodium amide (सोडियम ऐमाइड)(B) Sodium oxide (सोडियम ऑक्साइड)(C) Sodiurm nitrite (सोडियम नाइट्राइट)(D) Sodium hydride (सोडियम हाइड्राइड)| |
| Answer» <p>(a) sodium amide -is formed when sodium is heated with dry ammonia</p> | |
| 4617. |
Write down the formulae of(i) sodium oxide(i) aluminium c(ii) sodium suphide(iv) magnesium hydroxidhloride |
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| 4618. |
1 c.c of 0.1 N HCl is added to 1 litre solution ofsodium chloride. The pH of the resulting solution willbe(2) 0(4) 4(3) 10 |
| Answer» <p>The pH of the solution is determined from the concentration of H+. The concentration of H+will be determined from HCl.pH = -log[H+]The concentration of H+ion is expressed in mol L-1or M.First we need to find the number of moles of 0.1 NHClNormality =(numberofmoles/Volumeofsolution(inliters))×numberofdisplacableH+inacidVolume of HCl added = 1 cm3Number of displacable H+in HCl = 11 cm3= 10-3L0.1 = n/10-3 (n is the number of moles of HCl)n = 10-4molesFinal volume of the solution on addition of HCl in 1 L of NaCl = 10-3+ 1 = 1.001 LNormailty of HCl = 10-4/1.001 = 10-4NNormality is equivalent to Molrity for HCl as the number of displacable H+is one.pH = -log[10-4]pH = 4Therefore, the pH of the resulting solution will be 4.</p> | |
| 4619. |
Electromagnetic radiations of wavelength 242 nm is just suffcient toionise Sodium atom. Then the ionisationenergy of Sodium in kJ mole'is |
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| 4620. |
A 0.24 g sample of compound of oxygen and boron was foundby analysis to contain 0.096 g of boron and 0.144 g of oxygen.Calculate the percentage composition of the compound byweight.1. |
| Answer» <p>thank you so much...😊😊</p> | |
| 4621. |
A 0.24 g sample of compound of oxygen and boron was foundby analysis to contain 0.096 g of boron and O.144 g of oxygen.Calculate the percentage composition of the compound byweight. |
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| 4622. |
weight.2. When 3.0 g of carbon is burnt in 8.00 g oxygen. 11.00 g ofcarbon dioxide is produced. What mass of carbon dioxide will |
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| 4623. |
& What are monsoon winds? |
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| 4624. |
. Achange in state from gaseous to liquid iscalle4. The circulation ofwater in nature is called5. The strong winds which causes high waves, called6. Amount of water in tree is7. The melting point of ice isin the sea.boiling point of water is |
| Answer» <p>3. condensation</p><p>4. natural circulation</p> <p>3) Condensation4) Water Cycle Or Hydrologic Cycle5) Strom6) more Than 50 Percent7) 0℃ and 100℃</p><p>Hope That Might Help YouRegards Vishal</p> | |
| 4625. |
3. Which of these components of food can be synthesized by plants.?b-Fats3- carbohydrated-All of thesec-Proteins4. Which of these is/are necessary for photosynthesis to takes place-?b-Chlorophyll- Carbon dioxided-All of theseWater5. The trapped insect gets entangled in the hair in.d- of theseC-Grassb-Insectivorous plantsa. Green plant |
| Answer» <p>3)d) All of these4)d) All of these 5)b) Insectivorous plants </p> <p>3.) all of these 4.)all of these 5.)insectivorous plants</p> <p>3 . d4. d 5. b is the right answer</p> <p>3. d4. d5. b is the right answer</p> <p>3) all of these4) all of these5) insectivorous</p> | |
| 4626. |
In pyrrole the electron density is maximum on:3INEET-II 2016](a) 2 and3(c) 2 and 5(b) 2 and 4(d) 3 and 4 |
| Answer» <p>thanks</p> | |
| 4627. |
18, Sulphur forms the chlorides S2CI2 and SCI2. The equivalentmass of sulphur in SCl2 is 16. The equivalent mass of sulphurin S2Cl2 is:(a) 8(b) 16(c) 64(d) 32 |
| Answer» <p>Eq. Wt of S is 16in SCl2 i.e. 32÷2 =16So in S2Cl2 32×2=64 now eq mass=molarmass÷ valancy i.e 64÷2=32</p> <p>thnx</p> <p>aapka naam kya h</p> | |
| 4628. |
GuarDate __/- ILA Copper wire of length 5 monto 35*, Calculate the increasewire. If a=1.7 x 10 degreeat IS. isin lengthCelcius" |
| Answer» <p>the length of cooper wire is 20cm</p> <p>the length of copper wire is 20cm</p> <p>the length of copper wire is 20cm is the correct answer</p> | |
| 4629. |
what are the colour of rainbow |
| Answer» <p>There are seven colors in the rainbow: red,orange,yellow,green,blue,indigoandviolet.</p> <p>thanks </p> | |
| 4630. |
What are the colors in a rainbow? |
| Answer» <p>There are seven colors in the rainbow: red,orange,yellow,green,blue,indigoandviolet.</p> | |
| 4631. |
The resistance of wireIncreases with length of wire(B) Decreases with area of Cross section(C) Depends on resistivity(D) All |
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| 4632. |
20°C or more.Tnda Ts between 10 C toC. Match the statements in Column A, with those in CoColumn B1. A substance obtained by combing two or more pureColumn Aratio2. Removing soluble solids from their s3. Removing insoluble impurities frocombing twosubstances in a definite(b) Compound3. Removing insoluble impurlies from muddy water by llowing it toolution in water(d) Evaporation(e) Sedimentationm muddy water by allowing it to settle.4. A process from which pure water is obtained in Gulf countres5. A device which is used to separate two immiscible liquids49 |
| Answer» <p>compoundevaporationsedimentationdistillationseparation funnel</p> <p>The two methods of separating soluble impurities </p> | |
| 4633. |
LONG ANSWER TYPE QUESTIONS : Answer in 20-25 wo1. Describe the role of proteins in our body |
| Answer» <p>Protein is an important component of every cell in the body.Hairand nails are mostly made of protein. Your body uses protein to build and repair tissues. You also use protein to make enzymes, hormones, and other body chemicals. Protein is an important building block of bones, muscles, cartilage,skin, andblood.</p> | |
| 4634. |
LONG ANSWER TYPE QUESTIONS : ANSWER IN 20-25 WORDS1. How are fibres classified ? Give two examples of each type.The |
| Answer» <p>*Classification of FibersFibers are broadly classified into natural fibers and man-made fibers.Natural FibersNatural fibers are hair-like threads obtained directly from plants, animals, and mineral sources. Botanically, a natural fiber is a collection of cells having long length and negligible diameter. They are obtained as continuous filaments or discrete elongated pieces similar to thread. They can be spun or twisted into yarn such as cloth and can be converted into nonwoven fabrics, such as paper or felt. An example of a commonly used natural fiber is cotton. Other examples include wool, jute, silk, hair, fur, hemp, and linen.</p><p>The characteristics of natural fibers are:</p><p>They can be spun or twisted into yarn to make cloth.</p><p>They can be converted into nonwoven fabrics.</p><p>They are strong and durable.</p><p>They have high moisture absorbing capacity.</p><p>They provide excellent look and feel.</p><p>They are comfortable.</p><p>Natural fibers can be classified according to their origin into the following categories:</p><p>Plant fibers</p><p>Animal fibers</p><p>Mineral fibers</p><p>Plant Fibers</p><p>Plant fibers are fibers that contain cellulose and can be extracted from the bast or stem, seed hair, leaf, or husk of a plant.</p><p>Plant fibers may be further categorized into:</p><p>Bast fibers: Extracted from the bast or skin surrounding the stem of the plants such askenaf, roselle, and coir. Due to their high tensile strength compared to other fibers, bast fibers are used for yarn and fabric production. They are durable when used...</p> <p>They can beclassifiedaccording to their origin: Vegetablefibersare generally based on arrangements of cellulose, oftenwithlignin:examplesinclude cotton, hemp, jute, flax, ramie, sisal, bagasse,andbanana.</p> <p>They can beclassifiedaccording to their origin: Vegetablefibersare generally based on arrangements of cellulose, often with lignin: examples include cotton, hemp, jute, flax, ramie, sisal, bagasse, and banana. ... Mineralfibersinclude the asbestos group.</p> <p>They can beclassifiedaccording to their origin: Vegetablefibersare generally based on arrangements of cellulose, often with lignin: examples include cotton, hemp, jute, flax, ramie, sisal, bagasse, and banana. Mineralfibersinclude the asbestos group.</p> <p>They are classified into two types:-(i) Synthetic fibre:- made by human beings for example nylon, etc.(ii) Natural fibres:- made made naturally... for example:- silk, cotton, jute, etc....Hope it help...</p> <p>Anexampleof a commonly used naturalfiberis cotton. Otherexamplesinclude wool, jute, silk, hair, fur, hemp, and linen.Thecharacteristics of naturalfibersare: They can be spun or twisted into yarn tomakecloth.</p><p>please like my answer and then I will also like your answer.</p> | |
| 4635. |
5. How does Hydra reproduce?Long Answer Questions (Answer in about 60-70 words): |
| Answer» <p>Hydra reproduceasexually by producing buds in the body wall, which grow to be miniature adults and break away when theyaremature. </p><p>In harsh conditions Sexual reproduction occurs in some Hydra. </p><p>Swellings in the body wall develop into either ovaries or testes.</p> | |
| 4636. |
4. If you kindle a mixture of 1 g of hydrogen and 8 g of oxygen, will you obtain a pure substance or amixture? |
| Answer» <p>A substance, BECAUSE hydrogen and oxygen are in the ratio 2 is to 1 and in case when hydrogen reacts with oxygen to form water there also in the ratio 2 is to 1 so this satisfy the condition hence a pure substance will be produced.</p> | |
| 4637. |
D. LONG-ANSWER QUESTIONS: Answer these questions.1. Explain the difference between herbivores, carnivores and omnivores |
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| 4638. |
bWhich method is applied to obtain pure copper sulphat(1from an Impure sample |
| Answer» <p>Pure copper sulphate crystals can be obtained by the process of recrystallization in which the impure sample is dissolved in a suitable solvent and heated in water bath and allowed to stand. The pure crystal start growing from the solution and the impurities can be decanted off.</p> | |
| 4639. |
What kind of image does a plane mirror form? |
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| 4640. |
27 )4. Answer the following questions (3a. How do we breathe?Or |
| Answer» <p>The Role of the Respiratory System is to breathe in oxygen and breathe out carbon dioxide. This is known as respiration. When the diaphragm and accessory muscles contract, your chest expands and pulls air into the lungs; this is inhaling. As your muscles relax, the space inside your chest gets smaller and under more pressure and the air is pushed out of the lungs; this is exhaling similar to letting air out of a balloon.</p> | |
| 4641. |
D-2What electron transition in the He' spectrum would have the same wavelength as the first Lyman transitionof hydrogen. |
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| 4642. |
(-11)/5 %2B 2/5 %2B 3/5 %2B (-2)/3 |
| Answer» <p>\frac{3}{5}+\frac{2}{5}+\frac{-11}{5}+\frac{-2}{3}= \frac{-28}{15}53+52+5−11+3−2=15−28</p> | |
| 4643. |
3. The petals and stamens generally dry and fall off after fertilisationWhy? |
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| 4644. |
3. The petals and stamens generally dry and fall off after terilisation. Why? |
| Answer» <p>After the process of fertilization, different parts of the plants show different types of changes:</p><p>The stamen and the sepal of the flowers wither away.</p><p>The sepal of the flower usually dries of after the process of fertilization or it may remain attached even after this in some species.</p><p>The ovary in the flower thickens and enlarges to form the fruit.</p><p>The ovule present in the flower becomes the seeds.</p> | |
| 4645. |
3. The petals and stamens generally dry and fall off after fertilisation. Why? |
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| 4646. |
Identify the advantagesb and disadvantages of wind energy |
| Answer» <p>AdvantagesRenewable and sustainableEnvironmentally friendlyreduces fossil fuel consumptionwind energy is freeIndustrial and domestic installationacheaper</p><p>DisadvantagesThe wind fluctuatesInstallation is expensiveThreat to wildlifeNoise pollution </p> | |
| 4647. |
Speed in particular direction. |
| Answer» <p>Velocity is a VECTOR quantity. Speed is a scalar quantity. Both have dimensions of Lt^-1. But velocity also has a direction; so a change of direction is a change of velocity, even if there is no change in speed.</p> | |
| 4648. |
Considerthe reaction, 2N O,(g)reaction N,O, disappears at a rate of 0.02reaction?4INO (g)+ O,(g) in liquid bromine. At a particular moment duringtM/s. At what rates NO, and O, are formed? What is the ratc of t |
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| 4649. |
Define two methods to purify water. |
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| 4650. |
WHAT ARE THE TWO MAIN METHODS OF MAKING FABRIC FROM THREAD? EXPLAIN |
| Answer» <p>The first step in creatingfabricis yarn production. Here, the raw materials that have been harvested and processed are transformed from raw fibers into yarn and threads. ... Thisprocessof joining the yarn together is called weaving. Weaving is done on a machine known as a loom and requires two sets of yarn.</p> <p>Most fabrics are presently produced by some method ofinterlacing, such as weaving or knitting. Weaving, currently the major method offabric production, includes the basic weaves, plain or tabby, twill, andsatin, and the fancy weaves, including pile, Jacquard, dobby, and gauze.</p> | |