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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.
| 56551. |
Why do stars twinkles |
| Answer» Because stars are very far from earth so its light reflect many times when reaching to our earths atmosphere . And when it enters to earth by reflaction of light it twinkles | |
| 56552. |
Functions of alveoli |
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Answer» Its function is that it increase the surface where the exchange of gas occurred It\'s function is to get oxygen from lungs to bloodstream and carbon dioxide from blood to lungs .It has surface area of 80cmsq. |
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| 56553. |
Describe structure and funtion of placenta |
| Answer» Placenta is a tube like structure.it act as a network between womb and baby. It has large number of villi . Which absorb more and more nutrition from the mother\'s blood. | |
| 56554. |
Someone plz help me with the second law of refraction of light. |
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Answer» Tell me What happened |
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| 56555. |
What is current???? |
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Answer» Rate of flow of charge is called current Rate of flow of charge known as current The flow of negative and positive charge in cunductive wire called cirrent Electric current through any cross sectional area is the amount of net charge flowing through it per second |
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| 56556. |
What are solar cells |
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Answer» A solar cell,converts the incident solar light energy directly into electrical energy in dc form.It is also called a solar photovoltaic cell (PV cell). Silicon and Gallium are used to make solar cells. Solar cell is device which converts solar energy (sunlight) directly into electricity. Solar cell use the sunlight to produce electricity |
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| 56557. |
What is principal focus and give its relation to Centre of curvature |
| Answer» C=4f | |
| 56558. |
How is the process of pollination is different from fertilisation ? |
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Answer» A Fertilization occurs deep within a flowering plant after pollination occurs but firstly pollination is transferred of pollen from the anther ( male organ of the flower) to the stigma ( female organ of the flower ) of the same or different flower POLLINATION -> it refers to the transfer of pollen grains from anther to stigma of same flower or different flower ....... ........ FERTILISATION -> it occurs when the pollen grains reaches the stigma , then it produces a pollen tube which grows down through the style of the ovary. |
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| 56559. |
How is father of Genitic |
| Answer» Father of Genetics is Gregor Johann Mendel (1822-1884). Gregor Mendel, through his work on pea plants, discovered the fundamental laws of inheritance. He deduced that genes come in pairs and are inherited as distinct units, one from each parent. Mendel tracked the segregation of parental genes and their appearance in the offspring as dominant or recessive traits. | |
| 56560. |
What is paratonic? |
| Answer» A movement exhibited by a plant or plant part due to the influence of an external stimulus is called paratonic or tactic movement. | |
| 56561. |
Why the weight of earth increasing |
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Answer» Because of increase in population I am not sure about this answer, but increasing weight of earth ? is due transformation of energy, that is increasing day-to-day. Transformation of energy created pressure on it...... We should have to think about it. |
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| 56562. |
How CO2 is heavier than air |
| Answer» Co2has high density than other gases that make co2heavier than air | |
| 56563. |
What is the difference between fleming left and right hand rule? |
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Answer» Fleming left hand rule uses for finding the direction of the motion it applies in the electric motor and right hand rule used for find the direction of the current it applies in the electric generator Fleming\'s left hand rule is applied when a current carrying conductor is placed in a magnetic field and used to find out the direction of force on a current carrying conductor in magnetic field.Fleming\'s right hand rule is applied when current is induced in a conductor due change in magnetic flux around the conducting coil and it is used to find the induced current direction in a conductor the magnetic flux changes around the conductor . In fleming left hand rule split ring is present but in fleming right hand rule only carbon brush not ring RHR for directions of induced I and LHR u know |
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| 56564. |
Compounds like alcohol & gulcose contain hydrogen but are not categorised as acids. Why? |
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Answer» Because they do not dissociates their ions in water It needs ions of H and OH to be acidic or basic. Glucose and alcohol have covalent bonds so do not have ions. They form covalent bond and not contain ions But they do not conduct electricity |
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| 56565. |
What is functioning of blood |
| Answer» \tBlood regulates body temperature.\tIt carries oxygen from lungs to different parts of the body.\tIt carries carbon dioxide from the body cells to the lungs for breathing out.\tIt carries digested food from the small intestine to all parts of the body.\tIt carries hormones from the endocrine glands to different organs of the body.\tIt carries waste product urea from the liver to the kidneys for excretion. | |
| 56566. |
Oxygenated blood is carry by |
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Answer» Pulmonary vein carry oxygenated blood from lungs to heart artery carry oxygenated blood from heart to all part of the body Plamonary artry Arteries have relatively thicker walls and are responsible for carrying oxygenated blood from the heart to different organs. An exception to this mechanism is the pulmonary artery as it is responsible for carrying deoxygenated blood from the heart to the lungs. Arteries except pulmomary artery as it contain deoxygenated blood from left ventricle to lungs |
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| 56567. |
What is the overy |
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Answer» There are two ovaries; one near each fallopian tube. Ovary produces the eggs or the female gametes. All the eggs are produces by the ovary when the female child is still in the womb. One egg matures in each ovulation cycle and is released from the ovary. The egg is caught by the flimbriae and transferred to the fallopian tube. a female reproductive organ in which ova or eggs are produced, present in humans and other vertebrates as a pair. |
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| 56568. |
dotted structure of co2 |
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Answer» Nice yogita |
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| 56569. |
What do you mean by heteroatoms????? |
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Answer» Hetero atoms are used in organic chemistry, basically all other atom than carbon and hydrogen are known as hetero atoms. The common hetero atoms which are used in Organic chemistry are, O, N, S, P ,X ( Cl, Br, I etc.)These hetero atoms are very useful in synthetic chemistry as they provide a series of compounds which are essential for the life as, in DNA the Nitrogen bases are used to pair and also in all the amino acids, amide group (-CONH2) is found. Heteroatoms is a sun depends on |
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| 56570. |
Why artries are thick walled and veins are thin walled |
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Answer» Since the emerges under high pressure in the arteries so, it is thick walled, elastic..veins don\'t need thick walls bcoz\' blood is no longer under high pressure ND so they have thin walls inspite they too have valves to ensure blood flow.. Becouse blood jada pressure se heart se aata he use jhelne ke liye arteries ki wall thick hoti he or veins me blood jada pressure se flow nhi krta he isliye uski walls thin hoti he |
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| 56571. |
Definition of plaque1 or 2 line |
| Answer» Plaque is a mass of substance getting accumulated on any wall or a structure causing obstruction.\xa0*Dental plaque is a layer of yellow slimy substance getting accumulated on the teeth and can be infected by bacteria.\xa0*Plaque is also formed in the arteries leading to Coronary Artery Disease.Calcium, fats and cholesterol accumulate at one or points in the coronary artery to form a plaque. This affects normal coronary circulation of blood in the heart. This will result in obstructing the blood supply. The accumulation of plaque in the artery is called as atherosclerosis. | |
| 56572. |
What is the name of country of winds? |
| Answer» Denmark | |
| 56573. |
An electric bulb is rated 220V and 100W when it is operated on 110V, the power consumed will be??? |
| Answer» 50W | |
| 56574. |
Whag is sidereal period |
| Answer» Sidereal period, the time required for a celestial body within the solar system to complete one revolution with respect to the fixed stars—i.e., as observed from some fixed point outside the system. The sidereal period of a planet can be calculated if its synodic period is known; the sidereal period of the moon or an artificial satellite of earth is the time needed for it to return to the same position against the background of stars. | |
| 56575. |
Which color has high wavelength? |
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Answer» Lal bati Red light |
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| 56576. |
If our brain weight is 1.2 to 1.4 kg then why dont we feel heavy ? |
| Answer» Our brain’s weight is around 1.6-1.8kg, still we don\'t feel it heavy. Our brain has a fluid called as Cerebrospinal Fluid (CSF) which performs several functions in our brain like acting as shock absorber, helping in excretion e.t.c. Among these the most important function is providing buoyancy/ up thrust force to the brain. Therefore, the amount of weight given by the brain to the trunk of our body, the CSF exerts the same up thrust force against it. This is how CSF helps in maintaining the equilibrium and we don\'t feel our brain heavy. | |
| 56577. |
Science paper ki preparation kaisi hai |
| Answer» | |
| 56578. |
Non metal which good conductor of electricity |
| Answer» Graphite | |
| 56579. |
Why is angle i equal to angle r |
| Answer» The law of reflection states that when a ray of light reflects off a surface then angle i is equal to angle r | |
| 56580. |
Minerals ores |
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Answer» And if u want to ask something else then ask it. MINERALS - minerals are the naturally occurring substances which are found during mining.Ex-> Al2O3.2H2O.SiO2 is a mineral of aluminum....... ....... .............. ORES - ores are the minerals from which metals can be extracted both easily and economically.Ex-> Al2O3.2H2O is an ore of aluminum; Fe2O3 and Fe3O4 are the ores of iron etc,.. |
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| 56581. |
Why is there a need to harness non-conventional sources of energy?give two reasons |
| Answer» The two main reasons to harness non-conventional sources of energy are:(i) The population of the world is increasing at a very rapid rate due to which demands for energy is increasing day by day.As, fossil fuels like coal, petroleum, are present in a limited amount which and are likely to finish one day so the need for alternative sources of energy is essential.(ii) Use of conventional sources of energy (coal, petroleum etc.) causes pollution. To reduce pollution use of non-conventional sources of energy is essential. | |
| 56582. |
What is reactivity sereis |
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Answer» Reactivity series difined as a high reactive metal displace less reactive metal and high reactive nonmetal displace less ractive non metal is known as Reactivity sereies , a reactivity series is an empirical, calculated, and structurally analytical progression of a series of metals, arranged by their "reactivity" from highest to lowest. |
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| 56583. |
What is Lewis structure |
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Answer» Lewis structure is the representation of no. of electrons present in the outer most shell of an element\'s atom Lewis structures, also known as Lewis dot diagrams, Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures, are diagrams that show the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule. |
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| 56584. |
What is polar solvent |
| Answer» Polar solvents have large dipole moments (aka “partial charges”); they contain bonds between atoms with very different electronegativities, such as oxygen and hydrogen | |
| 56585. |
Draw the structure of biogas plant , explain it\'s working |
| Answer» I think we can\'t draw the structure here . | |
| 56586. |
Structural formula of so2 |
| Answer» 0- -S- -0 | |
| 56587. |
What is a chemical equ |
| Answer» A chemical equation is the symbolic representation of chemical reaxtion | |
| 56588. |
Differenc between blood and lymph |
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Answer» Blood goes to whole part of the body and lymph goes to only tissuesBlood is red lymph is colorless Blood is a fluid connective tissue.. |
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| 56589. |
What is the diameter of eye? |
| Answer» 2.34 cm | |
| 56590. |
What is angular apperture? |
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Answer» It is the angle made by linear apprature at the centre of canvature The angular aperture of a lens is the angular size of the lens aperture as seen from the focal point |
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| 56591. |
What are the functions of nephron |
| Answer» 1. Filtration: Filtration of blood takes place in Bowman’s capsule from the capillaries of glomerulus . The filtrate passes into the tubular part of the nephron. This filtrate contains glucose, amino acids, urea, uric acid, salts and a major amount of water.2. Re-absorption: As the filtrate flows along the tubule useful substances such as glucose, amino acids, salts and water are selectively re-absorbed into the blood by capillaries surrounding the nephron tubule.3. Urine: The filtrate which remains after re-absorption is called urine. Urine contains dissolved nitrogenous waste, i.e. urea and uric acid, excess salts and water. Urine is collected from nephrons by the collecting duct to carry it to the ureter. | |
| 56592. |
What happen if salivary amylase is not produced in our body |
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Answer» Salivary amylase helps in breakdown of starch into simpler sugars , so digestion starts from the mouth itself.And now you can see what happens if our body stops producing saliva\tWe’ll not be ale to taste anything.\tFood will stick into our oral surfaces.\tExtreme mouth sores and other illness occurs.\tOur lips will chap easily.\tTeeth decay will occur.\tSwallowing will be a hard process and almost impossible one. When. Salivary amylase diea not produced the food does not became alkaline and soft because sakiva mix with them and make soft and porous due to which it easily swallowed by our foodpipe |
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| 56593. |
Rectangular copper coil together with slip rings are called______ |
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Answer» armachuradfgchannnnga armature Armature perhaps |
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| 56594. |
How is the formation of a circular rainb ows takes place by raindrops present in |
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Answer» Is that actually possible? how |
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| 56595. |
A convex mirror is held in water.what should be the change in its focal length |
| Answer» When a convex mirroir held in water focal will be diverded | |
| 56596. |
How slight variation are introduced in asexual reproduction |
| Answer» During asexual reproduction variation may be introduced due to the error during copying of DNA or mutation. As, no biochemical reaction is 100% perfect, so DNA copying or replication also produces some errors which results in the variation of the asexually reproduction organisms. Mutation is the alteration in the genetic matter due to some natural (DNA copying) or artificial factors like chemicals, x rays etc) | |
| 56597. |
Two difference between oxidation and reduction |
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Answer» Loss of e- is called oxidation and gain of e- is called reduction Gain of oxygen called oxidationLoss of hydrogen called oxidationLoss of oxygen called reductionGain of hydrogen called reduction |
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| 56598. |
What is different between electric and electric current |
| Answer» we can\'t see electric what is electric but moving of charged particle from positive to negative terminal called electric current we never suppose what is electric ... | |
| 56599. |
Agcl or agcl3 |
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Answer» AgCl3 is silver chloride AgCl3 |
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| 56600. |
1/f=1/v - 1/u prove that lens formula |
| Answer» | |