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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 8651. |
Evidence that particle have space |
| Answer» If you go in quantam level of a particle there is 99.9% space in it | |
| 8652. |
Evidence that particle |
| Answer» The size of the particles which make up matter are very, very small. This can be shown by performing the given experiment:i. Take 2-3 crystals of potassium permanganate and dissolve them in 100 mL of water.ii. Take out approximately 10 mL of this solution and put it into 90 mL of clear water.iii. Take out 10 mL of this solution and put it into another 90 mL of clear water.iv. Keep diluting the solution like this 5 to 8 times.This experiment shows that just a few crystals of potassium permanganate can colour a large volume of water (about 1000 L). So we conclude that there must be millions of tiny particles in just one crystal of potassium permanganate, which keep on dividing themselves into smaller and smaller particles. | |
| 8653. |
What is inertia. |
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Answer» It is fast law of motion \tInertia is the natural tendency of an object to resist a change in its state of motion or of rest.\tThe mass of an object is a measure of its inertia.\tA force that is just enough to cause a small cart to pick up a large velocity will produce a negligible change in the motion of a train, because of train’s large inertia. |
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| 8654. |
What is voilty |
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| 8655. |
What is vactor qantatiy |
| Answer» A physical quantity which have both magnitude and direction is the vector quantity. | |
| 8656. |
How many types of element ? |
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Answer» 118 An element is a substance that is made entirely from one type of atom. For example, the element hydrogen is made from atoms containing a single proton and a single electron. If you change the number of protons an atom has, you change the type of element it is.Currently, scientists know of 118 different elements. Some, like gold, silver, copper and carbon, have been known for thousands of years. Others, such as meitnerium, darmstadtium and ununquadium, have only recently been created by scientists. All known elements are arranged on a chart called the Periodic Table of Elements. |
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| 8657. |
Why do we get ill |
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Answer» What is polyatomic number ???? If we goes a dirty and unwell areas or if we comes contact germs or we were not care about your health |
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| 8658. |
Why does only February month has 29 days? |
| Answer» Leap year is basically a year with an extra day in it, February 29, and occurs once every four years. The reason for this is to keep the seasons, astronomical events and time differences in sync. This has to do with the Gregorian calendar, which is used almost everywhere in the world. Leap Year is directly related to the Earth and how many times it orbits the sun in one year. There are not actually 365 days in a year, but 365 1/4 days in a year. So basically, four quarters would make up an extra day, hence adding a day every four years. | |
| 8659. |
Is land a matter |
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Answer» Yes, because it contains place and has weight Yes,by the definition matter is anyhing which occupies space,have mass and can be perceive by our senses |
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| 8660. |
Why does desert cooler cool better on hot dry day |
| Answer» Because on a hot dry day the rate of evaporation is higher then a humid day and we know that evaporation causes cooling that\'s why | |
| 8661. |
Derive three equation1. v=4+at2.s=ut+1/2at2 3.v2-42=2as |
| Answer» | |
| 8662. |
Show that the particles of matter are too small with an activity . |
| Answer» take a container fill it with water at salt to it and let it rest after some you will see that salt has broken into small particles and dissolve in the water show that particle of matter are very small | |
| 8663. |
How can the loss of top soil be prevented |
| Answer» By planting more treesExplanationas we plant more trees we can control the effect of soil erosion as a root of the tree being the soil together and hence we can prevent the loss of topsoil | |
| 8664. |
What are different types of temperature scale write a relation among them |
| Answer» Celsius and Kelvin are two scales used to measure temperature. Both follow the same unit difference between each scale but with different starting points. The relation between Celsius and Kelvin are as follows-Celsius to KelvinK = D+273Where,K is the temperature in Kelvin scale.D is the temperature in Celsius scale. | |
| 8665. |
Flowchart of physical and chemical classification of matter |
| Answer» On the basis of physical state, matter is classified into three categories, such as solid, liquid and gas. Matter basically exists in three physical states and these states are used to classify them in the physical form. Matter is distinguished into solid, liquid or gas by the arrangement of the atoms in the mater. While a chemical property is revealed only by the behavior of a substance in a chemical reaction, a physical property can be observed and measured without changing the composition of a sample. Physical properties include color, pressure, length, and concentration. | |
| 8666. |
What is chromatography and its application |
| Answer» Chromatography is the technique used for separation of those solutes that dissolve in the same solvent.To understand how this technique can be used let us perform an activity.Take a thin strip of filter paper. Draw a line on it using a pencil, approximately 3 cm above the lower edge as shown in figure(a). Put a small drop of ink (water soluble, that is, from a sketch pen or fountain pen) at the centre of the line. Let it dry. Lower the filter paper into a jar/glass/ beaker/test tube containing water so that the drop of ink on the paper is just above the water level, as shown in Fig(b) and leave it undisturbed.Applications of ChromatographyTo separate• colours in a dye• pigments from natural colours• drugs from blood. | |
| 8667. |
Define pvt |
| Answer» Portal Vein Thrombosis is a blood clot of the portal vein, also known as the hepatic portal vein. | |
| 8668. |
What is the difference between unicellular and multucellular organisms with examples |
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Answer» Thanks Unicellular are Those organisms which has single cell whereas multicellular are those organisms which have multiples cell Unicellular have one cellMost of them are prokaryotesThey can seen thorugh microscopeEx-- amoeba paramecium EuglenaMulticellular have more than one cellThey are eukaryotesMost of them can see directly(Some exceptions on boyh sides) Unicellular organisms- Organisms which have one cell (2)eg-amoebaMulticellular organisms- Organisms which have more than one cell (2)eg- animals |
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| 8669. |
What is leucoplast |
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Answer» The pigment which makes the plant colourless Colourless plastid is said to be leucoplast The main function of leucoplasts is storage. Leucoplasts are plastids found in plants where photosynthesis does not take place. Colour less plastids are known as leucoplasts.They store the starch,fats etc. |
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| 8670. |
Type of cell |
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Answer» Two types of cell- prokaryotic and eukaryotic cell Cells are the basic, fundamental unit of life. So, if we were to break apart an organism to the cellular level, the smallest independent component that we would find would be the cell.Based on cellular structure, there are two types of cells:\tProkaryotes\tEukaryotes From which topic |
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| 8671. |
Convert on Kelvin scale of 37°C |
| Answer» 37°c + 273 k = 300° k | |
| 8672. |
Write the equation of motion and meaning of their symbol |
| Answer» There are three equation of motion first equation is according to the velocity time graph ,v= u+at in this equation v stands for final velocity U stands for initial velocity and a stands for acceleration and t stands for time taken the second equation of motion is according to distance time graph, s= ut+1/2at*t in this s stands distance u stands for initial velocity t stands for time taken t*t stands for t square and a stands for acceleration the third equation of motion is according to velocity distance graph, 2as= v*v-u*in this a stands for acceleration s stands for distance covered v*v stands for v square which is final velocity and U*U stands for u square which is initial velocity | |
| 8673. |
Who has discovered the nucleus |
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Answer» Robert brown Robert brown was discovered the nucleus in the cell Ernest Rutherford discovered the nucleus |
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| 8674. |
Define rigidity |
| Answer» Rigid means unbendable or inflexible The matter which undergoes rigid\'s property is called rigidity | |
| 8675. |
What is democracy |
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Answer» Democracy as a form of government in which rulers are elected by peoples and can change by peoples if they wish so Democracy means that people can live freed omly Democracy is a form of government which is elected by people |
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| 8676. |
Convert 300 kelvin into celsius |
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Answer» 27 300k-273k=27degree celcius 0 degree celsius equal to 273k300k-273k=27degree celsius 300°C |
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| 8677. |
Is direction important for Temperature |
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Answer» No No No. Temperature is kinetic energy which does not need direction |
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| 8678. |
Write the compsition of cell wall. |
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Answer» cell wall is composed of protein ,pectin, cellulose Is mainly composed of cellulose and lignin it provides the cell cell which strength and rigidity |
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| 8679. |
26 degree convert at kelvin |
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Answer» Result in celcius scale = 26. And value of Kelvin scale = 273 by adding both value 26 + 273 = 299 For converting degree Celsius scale to kelvin scale you have need to add 273 to your celcius result and the result you get in kelvin like that ,;-) 269 |
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| 8680. |
what is space of molecule of dye colour |
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| 8681. |
WhaT is neutralising |
| Answer» When acids and bases react, they result in the formation of salt and water as product and this reaction is called neutralization reaction. In our everyday life we come across many situations which involve neutralization reactions. The following examples will illustrate common neutralization reactions that occur around us.During indigestion, too much of acid is produced inside the stomach resulting in stomach disorder or acidity. In order to retrieve the pain we take bases such as milk of magnesia which contains magnesium hydroxide. Taking a base neutralizes the effect of excess acid.Second is the effect of ant sting which is caused by formic acid which is neutralized by rubbing moist baking soda (basic in nature) which contains zinc carbonate. | |
| 8682. |
How do substance like carbon dioxide and water move in and out of the cell? |
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Answer» Here diffusion don\'t occur By the process of osmosis By the process of diffusion Gyuuuu |
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| 8683. |
Matter is made up of small |
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Answer» Particles Matter are made up of small particles which can be called as element or atoms Particles Particle and atoms |
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| 8684. |
How to make notes of bio(fundamental unit of life |
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| 8685. |
Name the dispersed phase and dispersing medium in fog? |
| Answer» The dispersed phase and dispersion medium of fog respectively are liquid and gas. It is an example of liquid aerosol. Other examples of this type of aerosol include mist and clouds. | |
| 8686. |
which book is better for science class 9 lakhmir singh or pradeep ? |
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Answer» what is matter Lakhmir Singh and manjit kaur Lakhmir singh |
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| 8687. |
What produces more serve burns , boiling water or steam |
| Answer» Steam because it contains hidden heat | |
| 8688. |
Derive equationof motion by using graphical method |
| Answer» \tGraphical Representation of Motion:\tDistance – Time Graphs:The change in the position of an object with time can be represented on the distance-time graph. In this graph, time is taken along the x–axis and distance is taken along the y-axis.Distance-time graphs can be employed under various conditions where objects move with uniform speed, non-uniform speed, remain at rest etc.When an object travels equal distances in equal intervals of time, it moves with uniform speed. This shows that the distance travelled by the object is directly proportional to time taken. Thus, for uniform speed, a graph of distance travelled against time is a straight line whereas for non-uniform speed it is a curved line.\xa0\tVelocity – Time Graphs:The variation in velocity with time for an object moving in a straight line can be represented by a velocity-time graph. In this graph, time is represented along the x-axis and the velocity is represented along the y-axis. If the object moves at uniform velocity, the height of its velocity-time graph will not change with time. It will be a straight line parallel to the x-axis. To determine the distance moved by the car from its velocity-time graph, the area under the velocity-time graph gives the distance (magnitude of displacement) moved by the car in a given interval of time.For example, if the car would have been moving with uniform velocity, the distance travelled by it would be represented by the area ABCD under the graph. Since the magnitude of the velocity of the car is changing due to acceleration, the distance s travelled by the car will be given by the area ABCDE under the velocity-time graph.That is,s = area ABCDE = area of the rectangle ABCD + area of the triangle ADE= AB × BC + 1/2 (AD × DE)In the case of non-uniformly accelerated motion, velocity-time graphs can have any shape.\xa0\tEquations of Motion by Graphical Method:When an object moves along a straight line with uniform acceleration, acceleration during motion and the distance covered by it in a certain time interval by a set of equations known as the equations of motion. Three equations of motion:i. v = u + atii. s = ut + ½ at2iii. 2as = v2 – u2where u is the initial velocity of the object which moves with uniform acceleration a for time t, v is the final velocity, and s is the distance travelled by the object in time t.\xa0 | |
| 8689. |
Solutions and it\'s type (hypertonic hyptonic and istonk ) |
| Answer» Hypertonic solution: if a medium contains lower water concentration as compared to the cell ,such a solution is known as hypertonic solution.Hypotonic solution:if a medium contains higher water concentration as compared to the cell ,such a solution is known as hypotonic solution.Isotonic solution: if a medium contains exactly the same water concentration as compared to the cell ,such a solution is known as isotonic solution. | |
| 8690. |
What means the rationalisaiton |
| Answer» Rationaliasation means making a term rational by multiplying a term by both digits of a fraction | |
| 8691. |
What is mean by cell? |
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Answer» Structural and functional unit of your body The small structural and basic functional are called a cell. Cells are of different types and size All living organisms are made up of fundamental unit of life is called cell. orThe structural and functional unit of life is known as cell. All the living organisms are made up of fundamental unit of life called” cell”. the smallest structural and functional unit of an organism, which is typically microscopic and consists of cytoplasm and a nucleus enclosed in a membrane. |
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| 8692. |
What is nucleoplasm |
| Answer» Nucleoplasm is a type of protoplasm that is composed of thick fluid and constitutes chromatin fibres made up of DNA and usually found in the nucleus of the eukaryotic cells. This fluid contains primarily water, dissolved ions, and a complex mixture of molecules.Its primary function is to act as a suspension medium for the organelles of the nucleus. | |
| 8693. |
Do we sweat more on dry day or humid day ?why |
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Answer» Dryhot day On humid day On a hot summer and humid day, the temperature of the body increases. Therefore, in order to cool the skin, the body starts sweating.It absorbs the latent heat of the body and gets evaporated into the atmosphere.Apart from that, increased humidity level is a major case of sweating. |
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| 8694. |
Matter keywords |
| Answer» \tAnything which occupies space and has mass is called matter.\tThe intermixing of particles of two different types of matter on their own is called diffusion.\tThe temperature at which a solid melts to become a liquid at the atmospheric pressure is called its melting point.\tThe temperature at which a liquid starts boiling at the atmospheric pressure is known as its boiling point.\tThe phenomenon of change of a liquid into vapours at any temperature below its boiling point is called evaporation.\tHumidity is the amount of water vapour present in air.\tA material which can flow easily is called a fluid.\tDiffusion is a property of matter which is based on the motion of its particles.\tSublimation is the change of gaseous state directly to solid state without going through liquid state, and vice versa.\tThe process in which a solid substance changes into a liquid on heating, is called melting.\tThe process in which a liquid substance changes into a gas on heating, is called boiling.\tThe process of changing a gas to a liquid by cooling, is called condensation.\tThe latent heat of fusion of a solid is the quantity of heat in joules required to convert 1 kilogram of the solid to liquid, without any change in temperature.\tThe latent heat of vapourisation of a liquid is the quantity of heat in joules required to convert 1 kilogram of the liquid or gas, without any change in temperature.\tThe process of a liquid changing into vapour even below its boiling point is called evaporation. | |
| 8695. |
Matter Ki definition |
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Answer» Anything which have mass and weight is called matter Anything which occupies space and has weight is known as matter Matter is anything that has occupy space and has mass is known as Matter A matter which can occupy space and have a mass called matter |
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| 8696. |
Mcq of chapter source of energy |
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| 8697. |
What is the function of parenchyma |
| Answer» Parenchyma provides support to plants and also stores food. It is a basic packing tissue in plants. Parenchyma of stems and roots store water and nutrients. Sometimes it contains chlorophyll and performs photosynthesis ( called chlorenchyma) . In aquatic plants, parenchyma ( called aerenchyma) shows large air spaces to give buoyancy to plant. | |
| 8698. |
Alloys Ki definition |
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Answer» an alloy is a homogeneous mixture of two or more metal or a metal and a non metal A homogeneous mixture made up of one or more metals or a metal with non - metal is called alloys |
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| 8699. |
What is micoplasam |
| Answer» Mycoplasmas are the smallest and the simplest organisms. They are prokaryotes having nucleoid. They have heterotrophic mode of nutrition and their body can change forms easily. They are also called as MLO, i.e., Mycoplasma Like Organisms. | |
| 8700. |
Which is the largest cell organelle in plant cell |
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Answer» Vacuoles Vacuoles Chloroplast |
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