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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.
| 55951. |
List four condition required for efficient gas exchange in an organism |
| Answer» Four condition required for efficient exchange of gases of an organism : -i ) Large surface area over which exchange of gases can take place easily.ii) very fine and delicate surface for easy exchange of Oxygen and Carbon dioxide.iii) Placement of respiratory surface within the body for protection & hence special passages are present so that the air could easily enter and exit.iv) Mechanism for moving the air in & out of the respiratory surface where oxygen is absorbed. | |
| 55952. |
Name a type of ore of Mercury. |
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Answer» Cinnabar Cinnabar Cinnabar |
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| 55953. |
Advantages of soap and advantages of detergent |
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Answer» Advantages of Detergents:\tLaundry detergent - One of the major applications of laundry detergents is washing clothes. The formulation of these detergents is complex; it depends on the demands of application and competitive consumer market. Laundry detergents generally contains surfactants, softeners, bleach, enzymes, fragrances, wand many other agents.\tFuel additives - To prevent fouling detergents are used in Otto engines components like the carburetors and the fuel injectors.\tBiological Reagents - In biological cells, for the isolation and purification of integral membrane proteins detergents in the grade of reagents is used.Advantages of Soap:\tSoaps are antibacterial, they can help kill germs.\tMild soaps can wash off the corrosive acids that drop on your skin and neutralize it.\tSoaps are used for bathing, cleaning, and washing.\tIt helps keep skin clean.\tThey also remove dirt, oil, makeup and other impurities on skin. Soaps are biodegradable and detergent are non biodegradable......... Detergent can give excess of lather with hard water and soap don\'t give excess of lather with hard water Soaps are good in only soft water,bt it is not good in hard water,whereas detergent are good in both hard and soft water. Detergent have more cleansing action then soap Detergent can work with hard water whereas soap cannot. |
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| 55954. |
Name the part of bryophyllum where the buds are produced for vegetative propagation . |
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Answer» The buds are produced at the margin of the leaves in Bryophyllum. Vegetation propagation in Bryophyllum plant takes place through leaves which have notches at its margins. Buds arises from these notches when they drop off from the leaf in soil a new plant develops from it. In leaf of bryophyllum buds are produced Leaves |
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| 55955. |
What is the difference between the esterification and saponification |
| Answer» Esterification :\tThe reaction in which a carboxylic acid combines with an alcohol to form an ester is called esterification.\tEsters are formed.Saponification :\tThe alkaline hydrolysis of esters is known as saponification.\tSoap is formed | |
| 55956. |
What is tetravalecy? |
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Answer» Tetravalency: Carbon has a valency of four, it is capable of bonding with\xa0four other atoms of carbon or atoms of some other mono-valent\xa0element. This\xa0property of carbon is known as tetravalency of carbon. Carbon forms with most other elements are\xa0very strong making these compounds exceptionally stable. tetravalency means that it is capable of making four bonds. That is it has a valency 4 |
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| 55957. |
What is allotropes of carbon |
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Answer» Graphite, diamond and Buckminster fullerene Allotropes of carbon\tDiamond – an extremely hard, transparent crystal, with the carbon atoms arranged in a tetrahedral lattice. A poor electrical conductor. An excellent thermal conductor.\tLonsdaleite – also called hexagonal diamond.\tGraphene – is the basic structural element of other allotropes, nanotubes, charcoal, and fullerenes.\tQ-carbon – a ferromagnetic, tough, and brilliant crystal structure that is harder and brighter than diamonds.\tGraphite – a soft, black, flaky solid, a moderate electrical conductor. The C atoms are bonded in flat hexagonal lattices (graphene), which are then layered in sheets. Graphite and fullerene Diamond |
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| 55958. |
Bond st. Of s8 |
| Answer» A crown | |
| 55959. |
Why are ionic bond more stronger as comapred to covalent bonds? |
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Answer» Thanks elsa bh. IT MIGHT HELP YOU DUDE :)Ionic bonds result from the mutual attraction between oppositely charged ions while a Covalent Bond is a bond that results from a sharing of electrons between nuclei. They tend to be stronger than covalent bonds due to the coulombic attraction between ions of opposite charges. |
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| 55960. |
which process is responsible for production of biogas in a biogas plant? |
| Answer» Gas made from the anaerobic digestion of agricultural and animal waste is called biogas. When this biomass (agriculture and animal waste) is decomposed in the absence of oxygen, it releases biogas.The Bio-Gas Plant produces gas from the raw materials of human excreta and cowdung.. there is a slurry through which the waste enters in the plant there it goes to digester an air packed compartment made up of bricks than there microbes do anareobic respiration in absent of oxygen which reales methane & other gases which come out throuh pipe & then the left over are passed forward & used as gud manure . | |
| 55961. |
Explain term conversations and diversions with diagram |
| Answer» | |
| 55962. |
Why do iron pillar of india made by ashoka dont got rust |
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| 55963. |
What is denatured of alcohol |
| Answer» Denatured alcohol is ethanol (ethyl alcohol) made unfit for human consumption by adding one or more chemicals (denaturants) to it. Denaturing refers to removing a property from the alcohol (being able to drink it), not to chemically altering or decomposing it, so denatured alcohol contains ordinary ethyl alcohol. | |
| 55964. |
why are most carbon compound poor conductors of electricity? |
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Answer» why it conduct electricity but graphite is a good conductor of electricity vibhav Becouse they are non metal and have negative charges that opposes the flow of electricity |
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| 55965. |
The part of brain control all voluntary work.Forebrain is right or cerebrum is right? |
| Answer» Cerebrum is a part of forebrainI think Cerebrum | |
| 55966. |
What is the nature of light |
| Answer» LIGHT HAS DUAL NATURE -WAVE AND PARTICLE.\xa0 | |
| 55967. |
Derive the mirror formula |
| Answer» | |
| 55968. |
Show the diagram of image formation by plane mirror |
| Answer» See at ur NCERT | |
| 55969. |
Which of the following gases is involved when metal carbonate react with dilute acid |
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| 55970. |
Why it is not possible to form c4+ and c4- ions |
| Answer» If c4+ means large amount energy required to 4 eletronsIf c4- means in nucleas have 6 protons only so it would difficult to hold 10 electrons | |
| 55971. |
Why atom combine? |
| Answer» Atom combine to for different compound | |
| 55972. |
What is the electron dot structure of ethanoic acid?? |
| Answer» H-C- C-OH in first carbon atom there is three hydrogen atom .first in left side, second in up and third in lower .And in second carbon atom there is also one double bonded oxygen ion on upper side | |
| 55973. |
Why a.c generator are used?? |
| Answer» We use A.C generator becoz it converts mechanical energy into electrical energy in the form of alternating current or A.c | |
| 55974. |
Glucose ka structure baneye. |
| Answer» C6H12O6 | |
| 55975. |
Why carbon is a versatile element? |
| Answer» | |
| 55976. |
What is the mass |
| Answer» Amount of matter present in any body | |
| 55977. |
Name are, nutrition that is observed in the small intestine and be observed by the Kidneys tables |
| Answer» Gulcose/Amino Acids | |
| 55978. |
What is isomers structures |
| Answer» Isomers are compound with same molecular formula but different structure. | |
| 55979. |
What is meant by three R to save the environment |
| Answer» Reduce, Reuse, Recycle | |
| 55980. |
Why is the improper disposal of waste cause to environment not beneficial |
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| 55981. |
Explain the meanings of malleable and ductile |
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Answer» ductility means metal can convert into thin wire malliable is which can be turned into thin sheet |
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| 55982. |
What is the resistance of an air gaps |
| Answer» Infinite | |
| 55983. |
Why are raw materials of human body ? |
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| 55984. |
Reaction of anaerobic reaction? |
| Answer» C6H12O6 = 2C2H5OH + 2CO2 + 2ATP. | |
| 55985. |
What is calcination process |
| Answer» Calcination: Conversion of metals into their oxides at high temperature in absence of air (or) limited supply of air is called calcination.Carbonates, bicarbonate ores are subjected to calcination process.Ex: ZnCO3 → ZnO + CO2 | |
| 55986. |
Draw magnate ice field lines around a bar magnet |
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| 55987. |
Is geothermal energy a form of solar energy ? why or why not ?explain |
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| 55988. |
What is type of reproduction in protonemma of mosses? |
| Answer» Organisms\xa0reproduce\xa0by\xa0asexualmeans also. Fungi multiply and spread easily due to the millions of\xa0asexualspores they produce. In lower organisms like\xa0yeast\xa0and\xa0hydra, we observe budding. ... The fungi, the filamentous algae, the\xa0protonema of mosses, all easily multiply by fragmentation. | |
| 55989. |
What is the SI unint of electric current |
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Answer» Ampere Ampere Ampere Electric Current: The flow of electric charge is known as electric current. Electric current is carried by moving electrons through a conductor. SI unit of electric current is ampere (A). Ampere is the flow of electric charges through a surface at the rate of one coulomb per second. This means if 1 coulomb of electric charge flows through a cross section for 1 second, it would be equal to 1 ampere.Therefore; 1A=1C/1s Ampere Ampere |
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| 55990. |
Describe double circulation in human |
| Answer» In human beings, the blood goes through the heart twice during each cycle i.e. the blood passes through the human heart two times to supply once to the whole body. So, it is called Double Circulation of blood.The double circulation of blood includes:(i)Systematic Circulation: It supplies oxygenated blood from left auricle to left ventricle, thereby pumped to various body parts. The deoxygenated blood is collected from the various body organs by the veins to pour into vena cava and finally into the right atrium (auricle). Right atrium transfers the blood into the right ventricle.(ii) Pulmonary Circulation: The deoxygenated blood is pumped by the right ventricle into the lungs for oxygenation. The oxygenated blood is brought back to left atrium (auricle) of the human heart. From left atrium, the oxygenated blood is pushed into the left ventricle. The left ventricle pumps oxygenated blood into aorta for systematic circulation. | |
| 55991. |
How an image form by concave and convex mirror? |
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Answer» Concave mirror- real and inverted but in case no. 6 image is vitual and irrect. Convex mirror- image is virtual and irrect. Concave mirror - real and inverted ,Convex mirror- virtual and erect |
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| 55992. |
What is the linear magnification |
| Answer» The ratio of the height of image to the height of object is called linear magnification | |
| 55993. |
Which metal is liquid at room temperature |
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Answer» Mercury is a metal which is liquid at room temperature Mercury is the metal of liquid at room temperature but bromine is non-metal of liquid at room temperature. Mercury (Hg) Gallium and mercury Mercury Mercury Mercury is the only metal which is liquid at room temperature. |
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| 55994. |
Brief discussion of basic metallurgical process |
| Answer» THE process of extraction of metals from their ores and then refining them for use is called metallurgy | |
| 55995. |
What is the SI unit of temperature? |
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Answer» Kelvin Kelvin Kelvin Celsius |
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| 55996. |
What are nissal bodies |
| Answer» These are site of protein synthesis in (RER)rough endoplasmic reticulum... | |
| 55997. |
Explain why the planet do not twinkle |
| Answer» Because they are much closer to earth and they are the large collection of small reflecting stars . That\'s why they are least scattered and doesn\'t apperas to twinkle | |
| 55998. |
Differentiate between aquired trait and inherited trait in tabular form |
| Answer» Inherited traits are the characters which are inherited by the offspring from the parents. These traits are present in the form of genetic material, DNA. Genetic material is carried by the vehicles of inheritance, the chromosomes. Each gamete of opposite *** participating in the sexual reproduction donates the traits in the form of genetic material. These traits are expressed in the offspring and later carried on to nect generation. Such traits which are carried from one generation to another generation are called as inherited traits.Acquired traits as the name says are acquired by the individual during its life time. Acquired traits are due to changes in the life style, injury, loss of body parts, disuse of some body parts. These are the traits which occur in the somatic cells. Changes in the somatic cells are not passed on to the offspring belonging to next generation. | |
| 55999. |
How carbon can form long chain? |
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Answer» Actually carbon has a property of self combination which is known as catenation property due to this carbon can form a long chain By the property of tetravalency By property called "Catenation":) |
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| 56000. |
From where i can get Answers of all activities of biology |
| Answer» | |