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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.
| 57901. |
Define magnetic field lines |
| Answer» Magnetic field lines are imaginary lines which emerge from north pole and merges at south pole | |
| 57902. |
What is the role of apendix in our body |
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Answer» Appendix is a small tube like structure which helps to close the large intestine at left side Actuallythe scientists and doctors are also not knowing that the what is the role of appendix. So it is a little rope like structure at starting of large intestine. When a person is sufferingfrom appendix . The appendix will be cut off and removed from his body and he is totally well. |
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| 57903. |
What is ohms law. |
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Answer» At constant temperatures ,current flowing through conductor is directly proportional to the potential difference across its end : v is directly proportional to I :V=IR ( where r is a constant )R is known as resistance Current flowing through a conductor is directly proportional to potential difference across the ends of conductor.V is directly proportional to IV=RIV=IRHere v=potential differenceI=currentR=resistance of circuit |
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| 57904. |
What is meant by reduction |
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Answer» Gain of electron is known as reduction reaction Addition of hydrogen and removal of oxygen from a reaction is called reduction The chemical reaction in which hydrogen is added in a compound or element or oxygen is removed from a compound ir element is this reaction is known as reduction |
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| 57905. |
Al2O3 + 2NaOH= ? |
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Answer» 2NaAlO2+ H20 Na2Al+H2OSodium aluminate +water |
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| 57906. |
how to delete offline content |
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Answer» Hye Yaaa i also want to know I\'m new if you know tell me also please Hye |
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| 57907. |
How image is real or virtual |
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Answer» If light ray meet actually then it is real and if light ray appears to neet but does not actually meet than it is virtual imagr - sign means real and inverted +sign means virtual and erect If images are fotmed by intersection of real rays, then they are real. |
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| 57908. |
Prooerties of resistors in series and parallel?? |
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| 57909. |
What do you mean by double circulation and why it is essential ? |
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Answer» हमारे दिल मे खून का दो बार आना ही double circulation It is necessary in human being to separate oxygenated and de-oxygenated blood because this makes their circulatory system is more efficient and helps in maintaining constant body temperature. Why?? Flowing blood through heart twice. It is essential to oxigenate blood. |
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| 57910. |
Liver does not secreted any digestive juice but it is essential for digestion? |
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Answer» No no liver secrets bile juice which help in digestion of food Bile is a digestive juice secreted by liver... Still it doesn\'t contain any digestive enzymes, it plays an important role in digestion of fats. From which book ur asking coz questions are really challenging |
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| 57911. |
But friend in book Na2Co3.10H2O is given as washing soda |
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Answer» Na2co3.10h20 is also right because it contain water of crystilisation Na2Co3 is right bro |
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| 57912. |
What is modern periodic law?? |
| Answer» MODERN PERIODIC LAW states that the physical or chemical properties of the elements are periodic function of their atomic number. | |
| 57913. |
What is the formula of washing soda 1)Na2Co3 or 2)Na2Co3.10H2O |
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Answer» Ok thnX ashish Na2Co3 |
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| 57914. |
Why alveioli design for exchange of gases? |
| Answer» The alveoli are adapted to make gas exchange in lungs happen easily and efficiently. They give the lungs a big surface area. they have moist, thin walls they have a lot of tiny blood vessels called capillaries. | |
| 57915. |
What is reabsorbtion? |
| Answer» It is the process by which nephron removes water and solutes from the tubular fluid and returns them to circulated blood. | |
| 57916. |
What is the confirmation test for CO2 |
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Answer» If you want to confirm it in another way . You have to light a match stick , if the match stick is blown out. It is confirm that that CO2 present in the same place. When co2 is passed into lime water { Ca(OH)2 }it turns limewater milky white.Ca(OH)2 +H2O +CO2 =Ca(HCO3) |
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| 57917. |
What is cathode or anode? |
| Answer» Cathode means negative terminal and anode means positive terminal. | |
| 57918. |
Explain why chlorine is used for stepping drinking water supply |
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| 57919. |
A cocave mirrir produces 3 timesmagnified real image of object |
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| 57920. |
Why we feel crumps during physical exercise? |
| Answer» During physical exercise our body need more energy so at that time in our body anerobic reaction take place and lactic acid is formed causes to feel cramp | |
| 57921. |
Difference between displacement and double displacement reaction? |
| Answer» Displacement is that in which less reactive metal is displaced by others and in double displacement reaction is in which two elements or a compound\'ions is displaced by other ions to form a other compound. | |
| 57922. |
What is solar heater? And explain it |
| Answer» Solar water heater (SWH)is the conversion of sunlight into heat for water heating using a solar thermal collector ..SWH are active (pumped) and passive..they use water only,or both water and a working fluid. They are heated directly or via light - concentrating mirrors.. | |
| 57923. |
What is a calorific value |
| Answer» Production of energy per kilogram called its calorific value | |
| 57924. |
What is the role of enzyme in digestion |
| Answer» Enzymes are useful in fast digestion of food material...... | |
| 57925. |
Name two types of chemical reactions for which burning coal can be used as an example. |
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Answer» Can be used as an example for-(i) Combination Reaction(ii) Exothermic Reaction(iii) Redox Reaction Exothermic and combination reaction |
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| 57926. |
What is capillaries?? |
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Answer» Thanks..☺☺ any of the fine branching blood vessels that form a network between the arterioles and venules |
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| 57927. |
How do the current in series connection remains the same?? |
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| 57928. |
Give Difference between Ac and Dc generator |
| Answer» 1. Polarity is not fixed2.phase change.3.for longer transmissionIn AcDcOpposite of a.c. | |
| 57929. |
Why only the mercury has a liquid state in a metals |
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Answer» Because it has a low melting point and poor conductor of electrical. Because Hg always is in liquid form at room temperature |
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| 57930. |
What is joules law . Write its derivation |
| Answer» Joule is a si unit of energy and E= p×t | |
| 57931. |
Give formula for photosynthesis |
| Answer» It is given in ncert book on page no 96 at top. You can see there. | |
| 57932. |
Why pituitary glang known as master gland? |
| Answer» Pituatry gland is called master gland because it controls all other glands of human body. | |
| 57933. |
What happen when lead (pb) geting heat |
| Answer» No reaction | |
| 57934. |
Diamond is made up of carbon & coal is also made up of carbon atom but why diamond shine |
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Answer» Due to refraction and reflection of light by diamond Because diamond is very pure form of carbon thats why it shines. |
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| 57935. |
What is the reproductive unit of plant |
| Answer» Flower is the reproductive unit of plant. The style leads to the ovary that contains the female egg cells called ovules. The male parts are called stamens and usually surround the pistil. The\xa0stamen\xa0is made up of two parts: the anther and filament. The anther produces pollen (male reproductive cells). | |
| 57936. |
what is alkaline ??? |
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Answer» thank you for the answers An alkaline solution is one where the pH is greater than 7. Alkaline solutions are also known as basic solutions. They can be generated when metal oxides or metal hydroxides are put into water to dissolve. Examples of an alkaline solutions are sodium hydroxide solutions or potassium hydroxide solutions. Yes Bases which are soluble in water |
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| 57937. |
What is lymph and its functions |
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Answer» A tissue fluid devoid of rbc / a connective tissue flowing in lymph vessels The\xa0lymphatic\xa0system is a network of tissues and organs that help rid the body of toxins, waste and other unwanted materials. The primary\xa0function\xa0of the\xa0lymphatic\xa0system is to transport\xa0lymph, a fluid containing infection-fighting white blood cells, throughout the body. |
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| 57938. |
Should we multiply valancy while balancing a chemical equation |
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Answer» No add the valency Yes |
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| 57939. |
What type of reaction takes place when we put litmus paper on hcl |
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Answer» Blue litmus is RedAnd red litmus is no change Blue |
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| 57940. |
What is the difference between base and alkalies???? |
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Answer» Base~. Substances may be oxides or hydroxides of metal which can react with acid to produce salts and water.A base in which aquas dissociates to give OH- ions.Alkalies ~. Bases are soluble in water called alklies .Ex=NaoH,koH etc Compounds which gives hydroxide ions in their aqueous solution are known as Base while The bases which are water soluble are known as alkalies |
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| 57941. |
Diffrentiate compound, element and a substance |
| Answer» A compound contains atoms of different elements chemically combined together in a fixed ratio. An element is a pure chemical substance made of same type of atom. ... A compound can be separated into simpler substances by chemical methods/reactions. | |
| 57942. |
About the spinal cord |
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Answer» The spinal cord partners up with the brain to send information around the body as electrical signals. It tells the body what the brain wants and the brain what the body is feeling. Spinal cord is a cylindrical structure and it is directly attached by brain. |
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| 57943. |
What is the focal length of a normal eye lens when ciliary muscles are fully relaxed? |
| Answer» The suspensory ligaments in turn pull the eye lens due to which the eye lens gets stretched and becomes thin .Thin eye lens has large focal length.Thus we can say that when the eye is relaxed, the interior lens becomes less rounded and the lens has its maximum focal length for viewing distant objects. | |
| 57944. |
Define 1ohm meter? |
| Answer» When resistance is one ohm Multiplied area of cross section by the lenght of wire | |
| 57945. |
Importance of DNA copying |
| Answer» NA contains the blueprints for how to make the proteins and other molecules that make the cell run. Without it, cells would be unable to make the molecules they need to survive, and thus would die. Cell replication is the process of going from one cell to two cells. | |
| 57946. |
What fluid in the human body wets the internal organs? |
| Answer» Hcl | |
| 57947. |
Why is the sun reddish in colour in evening? |
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Answer» Any body knows Because the scattering of light is more when the son is near to the horizon |
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| 57948. |
Mecjanism of reflex action |
| Answer» Reflex action is a special case of involuntary movement in voluntary organs. When a voluntary organ is in the vicinity of a sudden danger, it is immediately pulled away from the danger to save itself. For example; when your hand touches a very hot electric iron, you move away your hand in a jerk. All of this happens in flash and your hand is saved from the imminent injury. This is an example of reflex action.The path through which nerves signals; involved in a reflex action; travel is called the reflex arc. The following flow chart shows the flow of signal in a reflex arc.Receptor → Sensory Neuron → Relay neuron → Motor neuron → Effector (muscle) | |
| 57949. |
Rbc full form |
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Answer» It is red blood corpuscles or cells.WELL pranav RBI stands for reserve bank of india Reserve Bank of India Red blood cell |
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| 57950. |
Why is iodised salt necessary for our body? |
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Answer» Iodine is necessary for the synthesis of thyroxine hormones in the thyroid gland. The thyroxine in turn regulates, carbohydrates, protein and fat metabolism in body for the growth. Defficiency of iodine is goitre. Thus, we need to take iodized salt to prevent iodine Defficiency in the body. Why is iodised salt necessary for our body? |
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