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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.
| 901. |
what changes takes place in matter |
| Answer» <p>Physicalchangesoccur when objects or substances undergo achangethat does notchangetheir chemical composition. This contrasts with the concept of chemicalchangein which the composition of a substancechangesor one or more substances combine or break up to form new substances</p> | |
| 902. |
7. An insect trapped in a circular groove of radius12 cm moves along the groove steadily andcompletes 7 revolutions in 100 s. What is the linearspeed of the motion:-(A) 2.3 cm/s(C) 0.44 cm/s(B) 5.3 cm/s(D) none of these |
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| 903. |
1.- This bone protects the brain and It is inour head. |
| Answer» <p>Theskull protects our brain </p> <p>the skull bone protect the brain</p> <p>skull is the right answer</p> <p>The skull protects our brain</p><p>plz like and accept as best🤣</p> <p>skull protects our brain</p> <p>the skull protect our brain 🧠</p> <p>the skull protect our brain</p> <p>the skull protects our brain </p> <p>the skull is answer of your question</p> <p>answer for the question is skull</p> <p>The skull is the bone which protects our brain</p> <p>the skull protect our brain by any damage</p> | |
| 904. |
(a) What are trade winds?(b) What is a thunderstorm(c) What is a tornado?(d) What are westerlies? |
| Answer» <p>global winds blowing from high pressure tropical regions to low pressure equitorial regions are called trade winds.and winds blowing from high pressure tropical regions towards low pressure sub polar regions are called westerlies</p> | |
| 905. |
Within elastic limit prove that young modulus of a material is the stress required to double the length of wire. |
| Answer» <p>Let the elastic law be stress = E * strain</p><p>initially, strain =0, so stress is 0.</p><p>Strain = change in length/ original length</p><p>so double length means strain = (2L-L)/L = 1</p><p>therefore, stress = 1*E</p><p>The modulus = stress/1 = stress</p><p>Therefore modulus is the stress required to double the length </p> | |
| 906. |
4 A block of wood floats in water with th of ts volume45submerged, but it just floats in another liquid. Thedensity of liquid is (in kg/m2) |
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| 907. |
ABCDEF is a regular hexagon, then find AB+ AC+ AD+ AE + AF. (O is the centre of regularhexagon) |
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| 908. |
8.Atomic size of the order of - |
| Answer» <p>10 nanometre is the correct answer</p> <p>10 nanometre is the correct answer of the given question</p> | |
| 909. |
Complete the follawing reaction and wnthe following reaction and w |
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| 910. |
Why is dense fog and storms are formed near New foundland coast? |
| Answer» <p>As the warm, moist air flows over a colder surface,dense fogoften forms. If the air isnearsaturation, the moisture will condense out of the cooled air andform fog. With light winds, thefog nearthe ground can become verydensecausing reduced visibilities and making it hard to see.</p> | |
| 911. |
1. What are monsoon winds? |
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| 912. |
8. What are monsoon winds? |
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| 913. |
Winds blow due to differences inbetween adjacent regions.The uneven heating of land over India andthe surrounding oceans gives rise towindsA weak circulation strengthens into a4.5.6.and can develop into aThe central calm portion of a cyclone iscalled itsHigh-speed winds can cause rotating stormscalled7.8.C. Say whether the statements are true1. When the wind speed is high, the pressure is2. The atmospheric pressure in the regions3. The northeast monsoon winds blow when4. It is dangerous to take shelter under trees5. The wind speed in a tornado can be greateror falsealso high.near the equator is high.the land is warmer than the sea.during a thunderstorm.than that in a cyclone. |
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| 914. |
Physics is an exciting subject. Explain this in abouhwordsDiscuss the relation of physics with other sciencesH.P.SS.CE 2004, 20Discuss the relation of physics with mathematics achemistryDiscuss the scope of physics in development of technoloHPSSCE 2What is physics? Discuss the relation of physicstechnology.(H.PS.S.CE. 2004.12 |
| Answer» <p>5)(i)Physics is the science of matter and its motion, space-time and energy. Physics describes many forms of energy - such as kinetic energy, electrical energy, and mass; and the way energy can change from one form to another. Everything surrounding to us is made of matter and Physics explains matter as combinations of fundamental particles which are interacting through fundamental forces.</p><p>(6)As we all know physics is the study of natural phenomena.Any sort of technology which we uses in our daily life is related to physics; You can see the examples given below</p><p>1)television uses electromagnets to direct electrons on a screen to produce pictures.</p><p>2)A cell phone uses microwaves.</p><p>3)Your car is built on mechanical principles.</p><p>4)A refrigerator uses thermodynamic principles.</p><p>5)Most modern homes use electricity to power appliances</p> <p>kindky crop the question you want to ask and then post it</p> | |
| 915. |
hy are Physics, Chemistry and Biology called Pure Sciences? |
| Answer» <p>Science is a universal subject that spans the branch of knowledge that examines the structure and behavior of the physical and natural world through observation and experiment. Science education is most commonly broken down into the following three fields: Biology, Chemistry, and Physics.</p><p>Since, all the other things are derived from these basic subjects, they are pure science.</p> | |
| 916. |
HE ENERGY OF FIRST STATIONARY STATE OF Lit2 IS |
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| 917. |
1.40.24 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 compositionweight.ofthe compound by |
| Answer» <p>stape waise give the answered </p> | |
| 918. |
Why halozen can't ionise toborm positive ion instead ithave lowhydzoĹenionisation energy than7:2 P |
| Answer» <p>Ionization energy is the quantity of energy that an isolated, gaseous atom in the ground electronic state must absorb to discharge an electron, resulting in a cation.</p><p>H(g)→H+(g)+e−</p><p>his energy is usually expressed in kJ/mol, or the amount of energy it takes for all the atoms in a mole to lose one electron each.</p><p>When considering an initially neutral atom, expelling the first electron will require less energy than expelling the second, the second will require less energy than the third, and so on. Each successive electron requires more energy to be released. This is because after the first electron is lost, the overall charge of the atom becomes positive, and the negative forces of the electron will be attracted to the positive charge of the newly formed ion. The more electrons that are lost, the more positive this ion will be, the harder it is to separate the electrons from the atom.</p> | |
| 919. |
95.Why are cloudy nights warmer than clear nights? |
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| 920. |
1. A O.24 g sample of compound of oxygend boron was ioundand 0.144 g of oxygenby analysis to contain 0.096 g of boronCalculate the percentage compoweight.of the compound bysitio |
| Answer» <p>houra i need stape by answers </p> | |
| 921. |
2. Answer the following questionsA. Reptiles are known for having threechambered heart. Which animal shows anear four chambered condition in reptiles? |
| Answer» <p>crocodile has four chamber and it is reptile alsothanks </p> <p>Except for crocodilians, which have a four-chamberedheart, allreptileshave athree-chamberedheart consisting of two atria and one ventricle. Thechamber calledthe right atrium receives deoxygenated, or "spent," blood returning from the body tissues</p> <p>crocodile is the answer</p> <p>crocodile has four Chamber it is reptile also</p><p>thanks</p> <p>crocodile shows five chamber heart</p> <p>crocodile have 4 chamber....</p> <p>the animal which show a near four chamber in reptiles are crocodile</p> <p>crocodile is the answer</p> <p>crocodile has chamber</p> <p>crocodiles have 4 chambers and it is a reptile ....may this help you</p> <p>except a crocodile all reptiles have three chambers in their heart</p> <p>except a crocodile all reptiles have three chambers in their heart </p> | |
| 922. |
Multiple Choice Questions-1) Litmus paper obtained froplant.d) Hibiscusa) Lichenb) Roseis a natural indicatorc) Moss2a) Phenolphthaleinb) Methyl orange c) Litmus d) Universal indicator...colour will be obtained on putting universal indicator in diluted3)Kokum extract.a) Yellowb) Redc) Oranged) Dark pink |
| Answer» <p>1. Litmus paper is obtained from Lichen</p><p>2. Litmus is a natural indicator</p><p>3. Red color will be obtained on putting universal indicator in diluted komum extract.</p> | |
| 923. |
Example 46. Calculate the number of gram atoms andnumber of gram molecules in 62g of phosphorus (P4). Atomicmass of P 31 amu. |
| Answer» <p>Atomic mass of phosphorus is 31 u</p><p>Molecular mass of P4= 31 X 4 = 124 u</p><p>Molar mass of P4= 124 g</p><p>1 mole P4molecule is =124g</p><p>124g of P4contains 6.023 X 10^23molecules of P4</p><p>62 g of P4contains -62 X 6.023 X 10^23/124 = 3.0115 X 6.023 X 10^23molecules of P4</p> | |
| 924. |
Zn + HCl --------> ZnCl2 + H2 |
| Answer» <p>Zn + 2HCl ---> ZnCl2 + H2</p> | |
| 925. |
How is drinking water cleaned in your house? |
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| 926. |
why heart has thick wall on its left side |
| Answer» <p>the left side also called " left ventricle" has to pump blood all the way around the body. while as the " right ventricle" has to only pump the blood to the lungs.</p> | |
| 927. |
alhat is a balancselhauelet Chemical aquatihns he balancel |
| Answer» <p>Abalanced equationis anequationfor achemical reactionin which the number of atoms for each element in thereactionand the total charge are the same for both the reactants and the products. ... Also Known As:Balancingtheequation,balancingthereaction, conservation of charge and mass.</p> | |
| 928. |
HUUI tlles crack on heating in the summerSS(D) there is no specific reasonQ.5 By using a concave mirror,screen and the mirror isconcave mirror, image of a tree is focused on a screen. The distance between thequal to twice the focal length of the concave mirror.D) Equal to one fourth of the focal length of the concave mirror.(C) Equal to half the radius of curvature of the concave mirror(D) Equal to the radius of curvature of the concave mirror. |
| Answer» <p>by using concave mirror you</p><p> get object on a screen and the</p><p> dist between mirror and</p><p> screen becomes folcal length</p><p> or half or radius</p> | |
| 929. |
What is mixture?Write the differences between homogenous and heterogenous mixture |
| Answer» <p>AMIXTUREis a combination of two or more substances that are not chemically united and do not exist in fixed proportions to each other. Most natural substances are mixtures.The termsheterogeneousandhomogeneousrefer to mixtures of materials in chemistry. The difference between heterogeneous and homogeneous mixtures is the degree to which the materials are mixed together and the uniformity of their compositionAhomogeneous mixtureis a mixture where the components that make up the mixture are uniformly distributed throughout the mixture. The composition of the mixture is the same throughout. There is only onephase of matterobserved in a homogeneous mixture. So, you wouldn't observe both a liquid and a gas or a liquid and a solid in a homogeneous mixture.Aheterogeneous mixtureis a mixture where the components of the mixture are not uniform or have localized regions with different properties. Different samples from the mixture are not identical to each other. There are always two or more phases in a heterogeneous mixture, where you can identify a region with properties that are distinct from those of another region, even if they are the same state of matter (e.g., liquid, solid).</p> | |
| 930. |
mg+1/2 o2 ------mgo |
| Answer» <p>If the heat of formation is a positive value then the reaction requires heat to occur and is called endothermic. If the heat of formation is negative, the reaction is exothermic and releases heat. The formation of MgO from magnesium and oxygen is extremely exothermic and is therefore difficult tomeasuredirectly.</p> | |
| 931. |
Azeotropic mixture of HCl and H20 has-(a) 48% HCI,(b)22.2% HCI. |
| Answer» <p>An azeotrope or a constant boiling mixture is a mixture of two or more liquids whose proportions cannot be altered by simple distillation.Azeotropic mixture of HCl contains 20.4% HCl.</p> <p>Azeotrope is a mixture of two or more liquids whose proportions cannot be altered by simple distillation. In simple words, the ratio in which two components are present in a mixture is same even in vapor phase.</p><p>For example: If a mixture of ethanol and water is given. The amount of ethanol is 97% and water is 3% then in vapor phase the ethanol is 97% and water is 3%.</p><p>There are two types of Azeotropes.</p><p>1- Minimum Boiling Azeotrope : It is nothing but Positive deviation from Raoult’s Law.</p><p>2- Maximum Boiling Azeotrope: It is Negative deviation from Raoult’s Law.</p><p>At 1 atm pressure HCl and H2O form an azeotrope containing 20.24% by weight of HCl. So the water is 100–20.24 = 79.76%.</p> | |
| 932. |
36. A solid body weighs 2.10 N in air. Its relativedensity is 8.4. How much will the body weigh ifplaced i)inwater,relative density 1.2 ?1) 2.85 N, 2.8 N 2) 3.85 N, 3.8 N3) 1.85 N, 1.8N 4)4.85 N, 4.8 Nii) in a liquid of |
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| 933. |
12A 100 W bulb B, and two 60 W bulbs B2 and B are connected to a 250 V source as shown in thefigure. Now W, W2 and W, are the output powers of the bulbs B,, B2 and B, respectively ThenUT-JEE(Sar)-2002, 3105в.в,250 V |
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| 934. |
Explain the ionic bond formation in NaCl |
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| 935. |
SCIENHow does an ionic bond differ from a covalent bondanswer with two examples of each type of bond. |
| Answer» <p>Chemical bonds are formed by the sharing of electron densities between two atoms. The electron density of the atoms is held between the two atoms and attracted to the positive forces of both sets of protons in the two nuclei.</p><p>In Ionic bonds there is a large difference inelectronegativitybetween the two atoms ( greater than 1.7) The large difference in electronegativity results in most of electron density being located next to the atom with the greatest electronegativity, and very little electron density being next to the atom with the lower electronegativity. This makes it easy for the two atoms involved int the bond to separate leaving one atom with a positive charge and one atom with a negative charge.</p><p>In covalent bonds there is no difference or a small differences in electronegativity. The electron density is more evenly shared between the two atoms. This creates a stronger bond between the two atoms that is more difficult to separate. Atoms involved incovalent bondingdo not separate into ions.</p><p>Ionic and covalent bonds differ in the degree of sharing of the electron densities between them. Covalent bonds share the electrons more equally and are stronger. Ionic bonds share the electrons very unequally and can be broken into ions.</p> | |
| 936. |
The pKa of acetic acid and pKb, ofammonium hydroxide are 4.76 and 4.75respectively. Calculate the pH ofammonium acetate solution. |
| Answer» <p>when a weak acid and a weak baseare mixed to form a solution,the ph of the solution is determined by following formula</p><p>ph=7+1/2[pka-pkb]</p><p> =7+1/2[4.76-4.75]</p><p> =7+1/2[0.01]</p><p> =7+0.005</p><p>ph=7.005</p> | |
| 937. |
Q10.a) Solid NaCl does not conduct electricity but when dissolved in water, itconducts electricity. Why? |
| Answer» <p> becoz solid NaCl is soluble in water makes ions .</p> <p>bcoz in solid state the ion of NaCl are immobile therefore it cannot conduct electricity</p> <p>because the ions are splitted </p><p>Na+ and Cl- and these ions</p><p> transmit enegy so solid nacl dont conduct electricity </p> <p>because the ions are splited Na+ and Cl- and these ionstransmit energy so solid nacl don't conducted electricity</p> | |
| 938. |
ry'slawconstant for CO, in water is 1.67x10 Pa at 298 K. Calculatethe quantity of CO2 in 500 mL of soda water when packed under 2.5 atmCO2 pressure at 298 K. |
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| 939. |
Define a fraction. Give five examples of fraction. |
| Answer» <p>Afractionwhere the numerator (the top number) is greater than or equal to the denominator (the bottom number). So it is usually "top-heavy".Example:5/3 (five thirds)and9/8 (nine eighths) areimproper fractions.Improper fractionsare NOT bad. See:Proper Fraction.</p> <p>A number in the form of numerator by denominator is called fraction</p> <p> a fraction is in the form of numerator and denominator.such as 2/3</p> <p>A number in the form of Numerator and denominator is called fraction</p><p>example:-2/34/518/215/19</p> <p>a number in the from of numberator and denominator is called fraction exp.. 2/3, 4/5, 5/19</p> <p>The numerator is greater than (or equal to) the denominator.Examples:4/3,11/4,7/7. MixedFractions: A whole number and properfractiontogether.Examples: 11/3, 21/4, 162/5.</p> <p>Afractionis a number that represents a whole number that has been divided into equal parts. ... Afractionis made up of two parts, the denominator and the numerator. The denominator is the bottom number of thefraction.•So we can define the three types of fractions like this: Proper Fractions: The numerator is less than the denominator.•Examples: 1/3, 3/4, 2/7. Improper Fractions: The numerator is greater than (or equal to) the denominator.•Examples: 4/3, 11/4, 7/7. Mixed Fractions:</p> <p>Example: 4/3, 2/3 etc. Improperfraction: Numerator is greater than or equal to denominator. An improperfractionoccurs when the numerator is greater than or equal to the denominator. These are someexamplesof improperfractions: 4/3,5/6 etc. Mixed number: Whole number and afraction.</p> | |
| 940. |
18/What is food ? Give five examples of food. |
| Answer» <p>Food is any substance consumed to provide nutritional support for an organism. It is usually of plant or animal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals.</p><p>eg.egg,rice,vegetables,milk, fruits</p> <p>Food is the basis need of every organism. </p> <p>Food is any nutritious substance that people or animals eat or drink or that plants absorb in order to maintain life and growth</p> <p>Example</p><p>i) Riceii) Milk productsiii) legumesiv) Nutsv) cereal</p><p>etc....., </p> | |
| 941. |
8.What is the main use of a spring balance? |
| Answer» <p>Main use of spring balance is to weigh</p> <p>Main use of spring balance is to weigh device that utilizes the relation between the applied load and the deformation of a spring</p><p>Hope you understand 🙂</p> <p>the use of spring balance is to weigh</p> <p>They are used when the accuracy afforded by other types of scales can be sacrificed for simplicity, cheapness, and robustness. A spring balancemeasuresthe weight of an object by opposing the force of gravityactingwith the force of anextendedspring</p> <p>First of all, let's clear the difference between weight and mass. Mass is the amount of matter contained in a body.Weight is the force with which the Earth attracts a body towards it's centre.</p><p>So now answering your question...Spring balance is used to measure weight of an object.</p> <p>spring balance is mainly used for measuring mass or weight of an body</p> | |
| 942. |
reWhat can you say about themotion of an object if its speed-time graph is a straight lineparallel to the time axis? |
| Answer» <p>Answer:Speed-time graph is a straight lineparallel totimeaxis, it means that thespeedof theobjectis not changing withtimei.e., theobjectis performing uniformmotion. plz accept as best </p> | |
| 943. |
73.According to equation,mol-1 the energy evolved whernAH =-3264.4 KJ7.8 g benzene is burnt in air will be(1) 163.22 KJ(3) 3.264 KJ(2) 32.64 KJ(4) 326.4 KJ |
| Answer» <p>For 1 moles of benzene the value of. ∆H = -3264.4KJ/mol</p><p>molar mass of benzene is = 78gm</p><p>so, the energy evolved in 7.8 gm or (7.8/78) = 0.1 moles is </p><p>= 0.1*(3264.4) = 326.4KJ</p><p>option D.</p> | |
| 944. |
Explain the construction and working ofan electric generator (AC). Draw a neat diagramand label it. |
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| 945. |
tensile strength determined formula |
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| 946. |
what are vacuoles? |
| Answer» <p>A vacuole is a membrane-bound organelle which is present in all plant and fungal cells and some protist, animal and bacterial cells.</p> | |
| 947. |
write a short note on vacuoles? |
| Answer» <p>A vacuole is an organelle in cells which functions to hold various solutions or materials. This includes solutions that have been created and are being stored or excreted, and those that have been phagocytized, or engulfed, by the cell.</p> <p>thanks</p> | |
| 948. |
________ nerves carry messages from the sense organs to the brain or spinal cord only while ________ nerves carry messages from the brain or spinal cord to the organs only.A) Mixed, SensoryB) Motor, MixedC) Sensory, MotorD) Motor, Sensory |
| Answer» <p>The answer is option C.</p> | |
| 949. |
properties.Give the characteristic properties and important uses of the following:b. polystyrenea. polythened. bakelitec. teflon |
| Answer» <p>a the properties used it is water resistant</p> | |
| 950. |
What is animal husbandry ? |
| Answer» <p>The process of breeding, rearing and managing animals for use is termed as animal husbandry</p> <p>The branch of agriculture which deals with the feeding, shelter, head, and breeding of domestic animals is called animal husbandry</p> <p>Ans. The science that deals with feeding, breading and caring of animals is called animal husbandry.</p> <p>Animal Husbandry means to rearing animals like - 🐄cow, 🐑 sheep, 🐔 hen to obtain milk meat eggs etc. In animal husbandry they got proper food, water etc. </p> <p>breeding ,rearing ,and taking care of animals for their profit is known as animal husbandry </p> <p>The brach of agriculture which deals with the feeding,shelter, health and breeding of domestic animals is called animal husbandry</p> <p>the process of feeding,breeding of animals by human for their profit is called animal husbandry </p> <p>is the process of breeding,rearing, and taking care of animals</p> <p> the science of breeding and caring for farm animals .</p> <p>Animals reared at home or in farms, have to be provided with proper food, shelter and care. When this is done on a large scale, it is called animal husbandry.</p> <p>the rearing of animals for meat, egg, milk is called animal husbandry.</p> <p>Rearing of animal on a large scale for obtain useful product such as,milk meat, etc</p> <p>animal husbandry is place where feeding; breeding; rearing; and caring of domestic animals take place for their profit</p> <p>rearing and caring of domestic animal for their own profit</p> <p>animal husbandry is a science or agricultural branch which deals with feeding, shelter, health, breeding of domestic animals.</p> <p>the rearing of animals for obtain the mill, flesh, etc.</p> <p>Animal husbandryis the branch of agriculture concerned withanimalsthat are raised for meat, fibre, milk, eggs, or other products. It includes day-to-day care, selective breeding and the raising of livestock.</p><p>Please like my answer.</p> <p>The branch of agriculture which deals with the feeding,shelter,health and breeding of domestic animals is called animal husbandry.If you think this answer will be help you give a like or comment also.</p> <p>taking care of animals in some particular place </p> <p>The science of breeding and caring for farm is called animal husbandry </p> <p>animals reread at The homes are in the farms have to provide with proper food shelter and care when this is done on the large scale it is called animal husbandry</p> <p>the process of breeding,rearing and managing animals for use is termed as animal husbandry</p> <p>taking care of cattle or other animals at home on a large scale is called animal husbandry</p> <p>animal husbandry is the place where animao are reared so that to obtain food and animal products from them</p> <p>domesting of animals or using for human need is known as animal husbendry</p> <p>Animal husbandry is defined as the feeding, breeding, rearing and caring of domestic animals so as to obtain food and other products from them.</p> <p>animal husbandry is defined as the feeding breeding rearing and caring of domestic animals to obtain food from them and other products too. food is also obtained from animals for which animals are reared this is also called animal husbandry</p> <p>the real means of animal husbandry is taking care of animal for their products </p> <p>meaning of animal husbandry is to caring of domestic animals so as to obtain food and other products like milk ,wool,meat etc.</p> <p>the rearing of animals at farms to store food grain called animal husbandry.</p> <p>animals husbandry is defined as the feeding , breeding, rearing and caring of domestic animals so as to obtain food' and other products from them</p> <p>Animal husbandryis the branch of agriculture concerned withanimalsthat are raised for meat, fibre, milk, eggs, or other products. It includes day-to-day care, selective breeding and the raising of livestock.</p> <p>the process of breeding rearing and managing animals for use in term and as animal husbandry</p><p>I HOPE IT HELPS 3</p> | |