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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.

9201.

Cell ki discovery kisne ki?

Answer» Robert hook discovered cell
Robert Hook
Robert Hooke had discovered cell.
Robert Hooke
Robart hook ne cell ki discovery ki.
9202.

How to identify that element is metal or non-metal??

Answer» The elements can be classified as\xa0metals,\xa0nonmetals, or\xa0metalloids. Metals\xa0are good conductors of heat and electricity, and are malleable (they can be hammered into sheets) and ductile (they can be drawn into wire). Most of the metals are solids at room temperature, with a characteristic silvery shine (except for mercury, which is a liquid). Nonmetals\xa0are (usually) poor conductors of heat and electricity, and are not malleable or ductile; many of the elemental nonmetals are gases at room temperature, while others are liquids and others are solids. The\xa0metalloids\xa0are intermediate in their properties. In their physical properties, they are more like the nonmetals, but under certain circumstances, several of them can be made to conduct electricity. These\xa0semiconductorsare extremely important in computers and other electronic devices.On many periodic tables, a jagged black line (see figure below) along the right side of the table separates the metals from the nonmetals. The metals are to the left of the line (except for hydrogen, which is a nonmetal), the nonmetals are to the right of the line, and the elements immediately adjacent to the line are the metalloids.
9203.

Write the atomic mass for 1st 10 elements in the periodic table

Answer» Nahi ata
1-hydrogen2-helium3-lithium4-berilium5-boron6-carbon7-nitrogen8-oxygen9-flurine10-neon
9204.

An Athlete complete on round 200 m in 40s

Answer» The circumstances of a circular track =2πr 2x22/7xdiametre/2. 2x22/7x200/2 =4400/7m. round completed by athlete in 2min 20sec =speed =140/40 =3.5. Total distance covered =4400/7x3.5=220
The circumference of a circular track =2πr =2x22/7xdiametre/2. 2x22/7x200/2 =4400/7m. round completed by athlete in 2min 20sec =speed =140/40 =3.5. Total distance covered =4400/7x3.5=2200m
9205.

Name the organisms made up of only one cell

Answer» Bacteria,chlamydomonas
Unicellular orignisms
Bacteria and amoeba
Bacteria and protits
Ameoba and pareomecium
9206.

Define molecules ?

Answer» Molecules the smallest unit into which a substance can be divided without changing its chemical nature
Molecules\xa0are formed by the combination of two or more atoms. For example; two atoms of hydrogen (H2)\xa0and one atom of oxygen (O2) react with each other and form one\xa0molecule\xa0of water.
A group of atoms is called atoms...
9207.

What is valence ?

Answer» Valence also spelled in chemistry the property of an element that determine the number of other atoms with which and atom of the element can combine
It is the ability of an atom to gain or lose electron in order to achieve the noble gas configuration. It refers to the ability of an element to combine with other element. It is obtained by determining the number of electrons in the outermost shell (also called valence shell) of each atom of an element. For instance, sodium has 1 electron in its outermost shell and hence valency of sodium is 1.
Gh
A whole no.that represent the ability of an atom. The valence is determine by the no.of electrons that an atom can lose add or share...
9208.

What is the importance of diversity

Answer» Diversity\xa0helps provide insight into the needs and motivations of all of your client or customer base, rather than just a small part of it.\xa0Diverse\xa0cultural perspectives can inspire creativity and drive innovation. Cultural sensitivity, insight, and local knowledge means higher quality, targeted marketing.\xa0It means understanding that each individual is unique, and recognizing our individual differences. These can be along the dimensions of\xa0race,\xa0ethnicity,\xa0gender,\xa0sexual orientation, socio-economic status, age, physical abilities, religious beliefs, political beliefs, or other ideologies.
9209.

Full form of CFC

Answer» Chloroflurocarbons
Chloroflurocarbons
Cholroflouorocarbon
Chlorofluorocarbon
Chlorofluorocarbon(CFC) is any of various halocarbon compounds consisting of carbon, hydrogen, chlorine, and fluorine.\xa0CFC\xa0were once used widely as aerosol propellants and refrigerants.\xa0
Chloroflurocarbon C = ChloroF = FluroC = Carbon
9210.

Na meaning

Answer» Na is Sodium
Na
9211.

What is Matrix ? What is Matrix made up of ?

Answer» A\xa0matrix\xa0is a rectangular array of numbers or other mathematical objects for which operations such as addition and multiplication are\xa0defined.\xa0The extracellular\xa0matrix\xa0is\xa0made\xa0up of proteoglycans, water, minerals, and fibrous proteins. A proteoglycan is composed of a protein core surrounded by long chains of starch-like molecules called glycosaminoglycans.
9212.

Explain the Mole Concept?

Answer» The\xa0mole\xa0is an amount unit similar to familiar units like pair, dozen, gross, etc. It provides a specific measure of the number of atoms or molecules in a bulk sample of matter. A\xa0mole\xa0is\xa0defined\xa0as the amount of substance containing the same number of discrete entities (atoms, molecules, ions, etc.)
9213.

All work

Answer»
9214.

Gaurav Seth can u tell me how u post the table in the answer in this app pls.

Answer» I use this app in phone. Can u tell me how can I use it in phone pls
U give answers in the computer
There is an tool available in the text editor tool .see the option available in the editor.there will be an option with a table pic . you ll get it
9215.

What is solubility of solute

Answer» The ability ,the capacity of a solute(substance to be dissolved)to dissolve in solvent(the substance in which it has to be dissolved)is called the solubility of solute
Solubility\xa0is a property referring to the ability for a given substance, the\xa0solute, to dissolve in a solvent. It is measured in terms of the maximum amount of\xa0solute\xa0dissolved in a solvent at equilibrium. The species that dissolves, the\xa0solute, can be a gas, another liquid, or a solid. ...
Solubility\xa0is a property referring to the ability for a given substance, the\xa0solute, to dissolve in a solvent. It is measured in terms of the maximum amount of\xa0solute\xa0dissolved in a solvent
9216.

What are differences between aqueous ana non aqueous

Answer» Aqueous solution is a solution in which water is solvent like NaCi solution. But Non aqueous solution is a solution in which water is not the solvent.
9217.

Science ke notes hai kya hindi ?

Answer»
9218.

Function of mitrocondriya ?

Answer» Mitochondria is covered by a double membrane. Outer membrane is highly porous while inner membrane has a lots of foldsThese folds create a large surface area for ATP {Adenosine Triphosphate (it\'s a molecule synthesis)}.ATP is the energy currency of cell and this process takes place in mitochondriaHence it\'s called as "the power house " of a cell
It is the powerhouse of cell and the functions of mitrocondriya are :- ApoptosisMitophagy ROS production ATP supply through OXPHOS
Also it produces the energy currency called ATP (Adenosine Tri phosphate)
Mitocondria is referred to as the powerhouses of cells, it play a vital role in the conversion of\xa0energy from food into\xa0energy.
it is the power house of cell
9219.

Science me first term me kon kon sa chapter aayega ?

Answer» Jo tri book mein hai
9220.

What are polyatomic ions?????

Answer» A\xa0polyatomic\xa0ion is an ion composed of more than one atom. The ammonium ion consists of one nitrogen atom and four hydrogen atoms. Together, they comprise a single ion with a\xa01+1+charge and a formula of\xa0NH+4NH4+. The carbonate ion consists of one carbon atom and three oxygen atoms and carries an overall charge of\xa02−2−. The formula of the carbonate ion is\xa0CO2−3CO32−. The atoms of a polyatomic ion are tightly bonded together and so the entire ion behaves as a single unit.
Group of atoms in compound or in elament that gains or lose elctron depending on its nature and carry a huge charge are called polyatomic ions.Ex- magnesium chloride,Ammonium chloride,ammonium carbonate etc.
9221.

What is newton first law?

Answer» Newton’s First Law of Motion:Any object remains in the state of rest or in uniform motion along a straight line, until it is compelled to change the state by applying external force.Explanation:\xa0If any object is in the state of rest, then it will remain in rest untill a exernal force is applied to change its state. Similarly an object will remain in motion untill any exeternal force is applied over it to change its state. This means all objects resist to in changing their state. The state of any object can be changed by applying external forces only.
9222.

Q : Difference between immediate and contributory causes of diseases.

Answer» Immediate Causes1. Factors which are directly responsible for a particular disease are called immediate causes.2. Example: Pathogens such as virus, bacteria, fungi, etc.Contributory Causes1. Factors which provide favourable conditions which make pathogens invasion easy are called contributory causes.2. Example: poor nourishment, unhygienic environment, pollutants, etc.
9223.

Distinquish between speed andvelocity

Answer» speed is a scalar quantity where as velocity is a vector quantity. speed is a fast movement where as velocity is rate of change of speed but they both are measured in meters per second or their SI Unit is same that is meter per second
I love you
Speed - is scalar quantityIt doesn\'t follow vector rule of additionOnly positiveNo directionVelocity- it is vector Follow vector rule of additionNegative and positiveDirection mentionedThese are basic ...you can search on physic book if higher classes for more
9224.

why is the weight of an object on the moon one sixth iths weight on the Earth?

Answer» Due to acellaration of gravity(g) which 9.8N on earth which id directly propotional to mass of planet or celestial body so moon has less mass (newtons 2nd law)
Due to the gravitational force it has less gravitational force than earth
Kritika sing I Love you
Ratio*
Due to the gravity due to acceleration acting on it ..as mass of moon is lesser as compared to that of earth ..the g also decrease ..by ration it turns out to be that a object of 6 kg in earth =1 kg on moon
9225.

What is bes

Answer» Bes\xa0(/ˈbɛs/; also spelled as Bisu), together with his feminine counterpart Beset, is an ancient Egyptian deity worshipped as a protector of households and, in particular, of mothers, children and childbirth. ...\xa0Bes\xa0later came to be regarded as the defender of everything good and the enemy of all that is bad.
9226.

What is the definition of Free fall?

Answer» When an object falls only under the influence of gravitational force alone is called free fall which is not possible in day to day life because friction and air resistance act on object falling
downward movement under the force of gravity only.
9227.

SI unit of momentun is kgm/s or nor

Answer» Kg /s
Kg/m
Yes you are right
Kg/m
Yes
9228.

What is called time lapse

Answer» Time lapse refers to a shot that follows a transition in time like an entire lSunset in a matter of seconds or the flowering of a plant in under a minute
9229.

What is centrifugation Kal Mera exam Hai periodic 1

Answer» Thanks
The process which is used to seperate different components of mixture which can be seperated by filteration.The principle is that during centrifugation lighter particles rises above and denser particles stay at bottom when spun rapidly.Ex. Used to squeeze out water from clothes in washing machine....Also used to seperate cream from milk and butter.
9230.

Can someone give me the important notes of the fundamental unit of life?

Answer» Hope it will be helpful for you ?. Best of luck for notes.
https://m.jagranjosh.com/articles/cbse-class-9-science-chapter-notes-on-the-fundamental-unit-of-life-part-2-1495530814-1 . This is part 2. Click on the link u will get the notes remaining after the first part.
https://www.jagranjosh.com/articles/cbse-class-9-science-chapter-notes-on-the-fundamental-unit-of-life-1495521188-1 . This is part 1. Click on the link u will get notes.
Sure
No
9231.

What is the difference between gravitation and gravity?

Answer» Gravitational force is the force on whole i.e. that force which is exerted by every object in universe to other object...Gravity is the gravitational force exerted by the EARTHTo conclude, gravitation is a term for the whole universe while gravity is a term refering to earth\'s gravitational force.
9232.

Who proposed the cell theory ?

Answer» SCHELIDEN AND SCHWAN PROPOSD CELL THEORY AND FURTHER EXPANDED BY VIRCHOW
M. SCHELIDEN AND T. Schwan
Theodor Schwann
9233.

Differentiate between uniform motion and nonuniform motion

Answer» UNIFORM MOTIONWhen an object covers equal distance in equal interval of time it is said to be in uniform motion.NON UNIFORM MOTIONWhen an object covers unequal distance in equal interval of time it is said to be in non uniform motion.
Easy explaination1) equal distance in equal interval - uniform2)e.g bus moving in a straight road - uniform1) unequal distance equal intervals - non - uniform2) e.g bus moving in a busy road - non - uniform
Uniform motion: when an obect covers equal distance in equal interval of time, known as uniform motion.2. For example, a car moving in a straight road Non-uniform motion: when an object covers unequal distance in equal intervals of time, is known as non-uniform motion.2. For example, a car moving through a busy road.
9234.

What are Xylem and Phloem made up of?

Answer» Xylem is a conducting tissue and constitute a vascular bundle.\xa0Xylem consists of tracheids, vessels,\xa0xylem parenchyma and xylem\xa0fibres.\xa0Phloem is also a conducting tissue and constitutes a vascular bundle.\xa0Phloem is made up of four types of\xa0elements: sieve tubes, companion cells,\xa0phloem fibres and the phloem parenchyma.\xa0\xa0
9235.

What is tissue. Explain

Answer» In Biology tissues in cellular organizational level between cells and the complete organ or tissue is a ensemble of similar cells\u200b and their extracellular matrix from the same origin that together carry out a specific function organs are then formed by the functional grouping together of multiple tissues
A group of cells that are similar in structure and work together to do a peculiar function is called tissue.The types of simple tissues are parenchyma, collenchyma, sclerenchyma and aerenchyma.
A tissue is a formation of group of cells similar in size, function, shape. The tissues are the combined to form organ to perform a specific function in the human body.
9236.

Who

Answer» World health organization
World Health Organization.
9237.

What is the displacement of a satellite when it make a complete round along its circular path

Answer» Zero; because after making a complete round, the distance between the final position and the initial position will be zero.
O
9238.

What type of mixtures are seperated by the technique of crystallization and why

Answer» A n s w e r:Homogeneous mixtures such as common salt solution and copper sulphate solution separated by technique of crystallization."Crystallization is also a chemical solid-liquid separation technique, in which mass transfer of a solute from the liquid solution to a pure solid crystalline phase occurs."\xa0Therefore, crystallization is used to separate a solid-liquid mixture.
9239.

Formulae of Sodium oxide

Answer» NaOH
Na2o
9240.

Which type of ribosomes are found in eukaryotes?Explain.

Answer» 80S Ribosomes are found in eukaryotes.
Flexibility in plants is due to aerenchyma.
Flexibility in plants due to
9241.

When water boils it\'s temperature

Answer» ? degree celcius
100 degree celesius
100°C at atmospheric pressure.
At an atmospheric pressure of exactly 760mm Hg (1 atm), the temperature at which a liquid boils is called the normal boiling point of the liquid. For water, the vapour pressure reaches the standard atmospheric pressure of 1 atmosphere at 100°C. So the normal boiling point of water is 100°C (212°F or 373K).
100
9242.

Speed of a car is 90km/h convert it into m/s

Answer» We know that,1 km = 1000 m1 hour =3600Now converting km/h into m/s, we get90 km/h = 90 km/h x 5/18 = 25m/s.
25m/s
9243.

Thought Pollution - root cause of all ills

Answer» Please give answer
9244.

You have a class on zoom live

Answer» No
You can use Google meet it is easy to use and it is best and not harmful too. I recommend you that?
Actually zoom is hacked many time that is why it is got harmful so now we are having class on Microsoft teams,I recommend you to try that one very easy and lovely app to use.?
9245.

which type of virus is covid 19 ? RNA virus or DNA virus

Answer» RNA is the ans
yes RNA is correct answer.answer of all of you guys are appreciated.
Rna
RNA
RNA
9246.

In which type of cell the nuclies lies on perifera ?

Answer» Plant cell
9247.

What are energy levels?

Answer» a n s w e r\xa0The electrons revolve around the nucleus in fixed circular paths called energy levels or shells.The energy levels or shells are represented in two ways:a) K,L,M,N…….b) 1,2,3,4,5……
9248.

Write a short note on different types of epithillial tissues and its functions

Answer» Epithelial TissueThe\xa0covering or protective tissues\xa0in the animal body are epithelial tissues.\xa0Epithelium\xa0covers most organs and cavities within the body. It also forms a barrier to keep different body systems separate. The skin, the lining of the mouth, the lining of blood vessels, lung alveoli and kidney tubules are all made of epithelial tissue.\xa0Epithelial tissue\xa0cells are tightly packed and form a continuous sheet. They have only a small amount of cementing material between them and almost no intercellular spaces. Obviously, anything entering or leaving the body must cross at least one layer of epithelium. As a result, the\xa0permeability of the cells\xa0of various epithelia play an important role in regulating the exchange of materials between the body and the external environment and also between different parts of the body. Regardless of the type, all\xa0epithelium\xa0is usually separated from the underlying tissue by an extracellular fibrous basement membrane.Different epithelia show differing structures that correlate with their unique functions. For example, in cells\xa0lining blood vessels\xa0or\xa0lung alveoli, where transportation of substances occurs through a selectively permeable surface, there is a simple flat kind of epithelium. This is called the simple\xa0squamous epithelium. Simple squamous epithelial cells are extremely thin and flat and form a delicate lining. The oesophagus and the lining of the mouth are also covered with squamous epithelium. The skin, which protects the body, is also made of squamous epithelium.\xa0Skin epithelial cells\xa0are arranged in many layers to prevent wear and tear. Since they are arranged in a pattern of layers, the epithelium is called\xa0stratified squamous epithelium.Where absorption and secretion occur, as in the inner lining of the intestine,\xa0tall epithelial cells\xa0are present. This\xa0columnar\xa0(meaning �pillar-like�)\xa0epithelium\xa0facilitates movement across the epithelial barrier. In the respiratory tract, the\xa0columnar epithelial tissue\xa0also has\xa0cilia,\xa0which are hair-like projections on the outer surfaces of epithelial cells. These cilia can move, and their movement pushes the mucus forward to clear it. This type of epithelium is thus\xa0ciliated columnar epithelium.Cuboidal epithelium\xa0(with cube-shaped cells) forms the lining of kidney tubules and ducts of salivary glands, where it provides mechanical support. Epithelial cells often acquire additional specialisation as gland cells, which can secrete substances at the epithelial surface. Sometimes a portion of the epithelial tissue folds inward, and a\xa0multicellular gland\xa0is formed. This is\xa0glandular epithelium.
9249.

What does 80s ribosomes mean?Are there also any types of ribosomes ?Explain.

Answer» The cytoplasmic chromosome of eucaryotes are 80 S. They occur inside the cytoplasm of eukaryotes either freely or attached to ER. The ribosomes are large in size with a length of (300-340 Angstrom) and breadth (20\xad0-240 Angstrom). The two subunits of 80S ribosomes are 60S and 40S. A tunnel occurs between the two subunits for passage of mRNA. The large subunit has a groove for pushing out the newly synthesized polypeptide. 80S ribosomes are synthesized inside the nucleolus. 80S ribosomes do not become functional inside the nucleous. Their subunits come out of the nucleus and become operational in cytoplasm. 40S subunit of 80S ribosome contains 33 protein molecules and a single 18S rRNA. 60S subunit has 40 protein molecules and three types of rRNAs- 28S, 5.8S and 5S.
9250.

Can anyone share or write the formulas for motion chapter ?

Answer» LOGINJOIN NOWPhysics\xa0>\xa0Motion\xa0>\xa0Equations of MotionEquations of MotionCricket fan? Hockey fan? Soccer fan? What is the first thing that is taught when you first start training for these or any other sports? It is understanding the correct motion, speed acceleration or the Equations of Motion. Once you master the Equations of Motion you will be able to predict and understand every motion in the world.Equations of Motion For Uniform AccelerationAs we have already discussed earlier,\xa0motion is the state of change in position of an object over time. It is described in terms of\xa0displacement,\xa0distance,\xa0velocity,\xa0acceleration,\xa0time and speed. Jogging, driving a car, and even simply taking a walk are all everyday examples of\xa0motion. The relations between these quantities are known as the equations of motion.In case of\xa0uniform acceleration, there are three equations of motion which are also known as the laws of constant acceleration. Hence, these equations are used to derive the components like displacement(s), velocity (initial and final), time(t) and acceleration(a). Therefore they can only be applied when acceleration is constant and motion is a straight line. The three equations are,v = u + atv² = u² + 2ass = ut + ½at²where, s = displacement; u = initial velocity; v = final velocity; a = acceleration; t = time of motion. These equations are referred as SUVAT equations where SUVAT stands for displacement (s), initial velocity (u), final velocity (v), acceleration (a) and time (T)Browse more Topics under MotionIntroduction to Motion and its ParametersGraphical Representation of MotionUniform Circular MotionYou can download Motion Cheat Sheet by clicking on the download button belowDerivation of the Equations of Motionv = u + atLet us begin with the first equation, v=u+at. This equation only talks about the acceleration, time,\xa0the initial and the final velocity. Let us assume a body that has a mass “m” and initial velocity “u”. Let after time “t” its final velocity becomes “v” due to uniform acceleration “a”. Now we know that:Acceleration = Change in velocity/Time TakenTherefore, Acceleration = (Final Velocity-Initial Velocity) / Time TakenHence, a = v-u /t or at = v-uTherefore, we have: v = u + atv² = u² + 2asWe have, v = u + at. Hence, we can write t = (v-u)/aAlso, we know that, Distance = average velocity × TimeTherefore, for constant acceleration we can write:\xa0Average velocity\xa0= (final velocity + initial velocty)/2 = (v+u)/2Hence, Distance (s) = [(v+u)/2] × [(v-u)/a]or s = (v² – u²)/2aor 2as = v² – u²or v² = u² + 2ass = ut + ½at²Let the distance be “s”. We know thatDistance = Average velocity\xa0× Time. Also, Average velocity = (u+v)/2Therefore, Distance (s) = (u+v)/2\xa0× tAlso, from v = u + at, we have:s = (u+u+at)/2\xa0× t = (2u+at)/2\xa0× ts = (2ut+at²)/2 = 2ut/2 + at²/2or s = ut +½ at²\xa0Learn more:Newtons Law of MotionUniform Circular MotionMore Solved Examples For YouExample 1: A body starts from rest accelerate to a velocity of 20 m/s in a time of 10 s. Determine the acceleration of the boy.Solution: Here, Final velocity v = 20 m/s and initial velocity u = 0 m/s (the body was at rest yo!). Therefore, Time taken t = 10 s. Hence, using the equation v = u +at.a = (v-u )/t= (20 – 0 ) /10= 2 m/s2Hence the acceleration of the body is 2 m/s2.Example 2: A bus starts from rest and moves with constant acceleration\xa08ms−2. At. the same time, a car travelling with a constant velocity 16 m/s overtakes and passes the bus. After how much time and at what distance, the bus overtakes the car?A) t =4s, s = 64m B) t = 5s, s = 72m C) t = 8s, s = 58m D) None of TheseSolution: A) Let the position of the bus be PB\xa0and the position of the car be PC. From s = ut +½ at², we haveSince the initial velocity of the bus, u = 0, hence we have PB\xa0= ½ (8)t²And PC\xa0= velocity × Time = 16×t. For the bus to overtake the car, we must have: PB\xa0= PCHence, ½ (8)t² = 16×t. Therefore, t = 4s.Using the value of t = 4s in PB\xa0= ½ (8)t ², we have the position of the bus at the time of overtaking is = 64m.CLASSESBOARDSEXAMSAbout Us\xa0Press\xa0Customer Stories\xa0Jobs\xa0Educators\xa0Blog\xa0Bytes\xa0Contact Us\xa0FAQsTerms Of ServicePrivacy Policy
to identity distance and displacement by short trick in examination is if the speed is given then it is distance and if velocity is given then it is displacement..hope this will help you in your examination.
And also pls tell that how to identify distance and displacement
formula of motion..speed = st average speed= total distance/ total time taken.velocity =st.average velocity =( u+v) /2 displacement = average velocity*time takenAcceleration =(v-u)/tkinematical equation..(i)v=u+at.(ii)s=ut+1/2 ut square.(iii)2as=v sq.- u sq.s- displacementv- final velocity/ speedt- timeu- initial velocitya- acceleration.hope this will helpful for you.