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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.
| 58001. |
Newton\'s all three laws with full derivation in short |
| Answer» Newton’s first law of motion states that “A body at rest or uniform motion will continue to be at rest or uniform motion until and unless a net external force acts on it”. Suppose a block is kept on the floor, it will remain at rest until we apply some external force to it. Also, we know that it takes us more effort or force to move a heavy mass. This is directly related to a property known as Inertia. This law is also known as the law of inertia.Second Law: The first law has already given us a qualitative definition of force. Now we are interested in finding out its magnitude. According to Newton’s second law of motion , the net force experienced by a body is directly proportional to the rate of change of momentum of the body. It can be written as:According to Newton’s third law of motion, for every action, there is an equal and opposite reaction. Forces are always found in pairs. For instance, when you sit on a chair, your body exerts a force downward and that chair needs to exert an equal force upward or else the chair will collapse. | |
| 58002. |
What is the split ring in an electric motor?Explain the meaning of reversing the current? |
| Answer» Split ring is connected to the motor and rotate with it it reverse the direction of current passing through the coil and change it terminal | |
| 58003. |
What are virus? |
| Answer» Virus are acellular microorganisms , which cause a number of diseases . They are harmfol for almost all living beings | |
| 58004. |
Which bacteria cause dental caries ? |
| Answer» Dental caries or tooth decay is a kind of infection, mostly caused by bacteria. Bacteria in our mouth feed on the sugar present in food that we eat and produce acids. These acids can dissolve the minerals present in our tooth enamel by a process known as demineralization which can cause destruction of the tooth enamel resulting in dental caries. | |
| 58005. |
Define critical angle |
| Answer» The critical angle is the angle of incidence beyond which rays of light passing through a denser medium to the surface of a less dense medium are no longer refracted but totally reflected. The critical angle is the angle of incidence where the angle of refraction is 90°. The light must travel from an optically more dense medium to an optically less dense medium. | |
| 58006. |
Explain digestive system? |
| Answer» Digestive system is a continous syestem in which the complex food gets turned into the simpler one and there are many organs such and stomach,liver,pancreas help in this process.All the food which is required is absorbed by our body but the wadtes which are toxic which is the stool and the urine is then excreted out of the body through ****. | |
| 58007. |
What is magnification??? |
| Answer» Magnification produced by a spherical mirror gives the relative extent to which the image of an object is magnified with respect to the object size.m = height of image/height of objectA negative sign in the value of the magnification indicates that the image is real.A positive sign in the value of the magnification indicates that the image is virtual. | |
| 58008. |
Why only urine can filter out from the kidney what is the reason behind it? |
| Answer» Our kidneys clean our blood by filtering it to remove unwanted/waste substance present in it. Urine consists of many harmful poisonous substances like urea , waste salts and excess water.The kidneys filters only urine as it is the only substance which is very harmful for body containing other harmful substances of the body. | |
| 58009. |
Define plasama |
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Answer» It is the liquid part of blood which is colourless. It consist mainly of water Plasma is the liquid/fluid part of blood which is colourless fluid/liquid ,mainly consists of water(90%).Red blood cells,white blood cells and platelets are immersed in this fluid (plasma). Define plasma |
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| 58010. |
Full form of MBBS |
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Answer» Medicinae baccalaurus baccalaurus chirurgiaehe Munna bhai mbbs Bachelor of medicine and bachelor of surgery ? |
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| 58011. |
By which process roots absorb water |
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Answer» Transpiration of pullAscend of sap By the help of xylem ??? R u mad giving the answer itself By the process of diffusion |
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| 58012. |
What use washing soda |
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Answer» Use in !aking of glass , soap, and in paper industries R u mad diksha singh. It is used for removing dirt and greace from clothes that is why this is known as washing soda It is used for removing permanent hardness of water. For washing White washing of walls |
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| 58013. |
Define potential difference in simple english |
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Answer» The amount of work done for moving a single coloumb charge from infinity to a point is the potential difference b/w the 2 points ✅ difference btw 2 potentials When I will pinch you then you will know what is pinching The difference between two potential is known as Potential difference The work done un a carrying a unit positive charge frim one point to another point .It is called potential difference What is meant by pinching |
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| 58014. |
What is endocrinology |
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Answer» Endocrinology is a branch of physiology and medicine which deals with endocrine glands and hormones. Excuse me who r u sunil?? Endocrilogy ka answer dena hai |
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| 58015. |
All alkalies are bases but all the bases are not alkalies explain |
| Answer» Bases are the substances which have OH- ions when dissolved in their aqueous solution BUT alkalies are the BASES which are soluble in water.FOR EX->NaOH is a base as well as an alkalie but CuOH is a base not an alkalie | |
| 58016. |
How to carbon complete the bonds with hydrogen |
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| 58017. |
How do acids and bases react with metal? |
| Answer» Reaction of acids with metals ................... Zn+2HCl------------------->ZnCl2+H2................ Reaction of base with metal........................ 2NaOH+2HCl--------->2NaCl+2H2O. | |
| 58018. |
Trachea does not colllapse |
| Answer» Because of rings of cartilage | |
| 58019. |
Briefly describe the alimentary canal in humans with diagram |
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Answer» The human alientry canal extend from mouth to ****. Its length is about 9 m. It is the digestion path of human . Mouth, oesophagus, coral cavity, stomach, small intestine and large intestine are the various parts of alimentary canal. See Ncert |
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| 58020. |
Write properties of magnetic field lines around a straight wire |
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Answer» The direction of the magnetic field lines of force around a conductor is given by the Maxwell\'s right hand grip rule or the right handed corkscrew rule.\u200b \u200bImagine that you are holding a current-carrying straight conductor in your right hand such that the thumb points towards the direction of current No answer |
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| 58021. |
What are decomposers? Give their functions. |
| Answer» Decomposers are organisms that break down the organic matter in the dead bodies of plants and animals and return them to the environment. Decomposers include organisms such as bacteria and fungi.Function of decomposers: 1. They break down complex organic matter into its basic components (carbon, nitrogen, etc.) and release them into the environment and help recycle them.2. They feed on the dead and decaying organisms and thus prevent the foul odour that spreads from the decaying organic matter. | |
| 58022. |
What is the main toxic waste kidney filters from the blood. |
| Answer» Urea or uric acid | |
| 58023. |
What process in plants is known as transportation? |
| Answer» The transport of food from leaves to various parts of the plant and water from the roots to the various part of the plant is called transportation. | |
| 58024. |
Name the molecule in the cell which store the energy produced at the end of the pathway |
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| 58025. |
Formula of light |
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| 58026. |
Name the functional group in CH2COCH3 |
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| 58027. |
Which of the four chambered of the human heart has thick muscular walls.? |
| Answer» The human heart is made up of four chambers. There are two superior atria and two inferior ventricles. The heart chamber that has the thickest muscle wall is the left ventricle. The left ventricle is responsible for pumping the blood around the heart and so it needs to have a strong muscle wall. | |
| 58028. |
What is excessive curvature of cornea? |
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| 58029. |
Name the compound used for softening hard water |
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Answer» Washing soda Washing soda Is use for softness of a hard watter Na2co3 Washing soda |
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| 58030. |
A student is not able to see the blackboard 40 cm away from him .. What is he suffering from ? |
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Answer» He might be suffering from myopia Sorry bro.......wrong ans.....its myopia Hypermetropia or long sightedness |
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| 58031. |
Two conductors of resistance r and 2r are connected in parallel calculate the power of the following |
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| 58032. |
How do we detect that we are touching a hot object? |
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Answer» Thanks By reflex action. |
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| 58033. |
Explain H+ ion as proton |
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Answer» H+ ion is also called a proton bcz it do not have much space to hold a neutron amd wen it loses an el- only a proton is left When it combines loses its electron . |
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| 58034. |
Explain why Aluminium is more reactive than iron yet its origin is less than iron |
| Answer» Because in reactivity series Al comes first and then fe comes | |
| 58035. |
Explain the structure and function of nephron ? |
| Answer» the structure of nephron is as follows:Renal artery, bowman\'s capsule, glomerulus, venual, capillaries and collecting duct.The function of nephron is filtration, reabsorption and secretion. | |
| 58036. |
Why sine angle is used in refraction of light not using other trigonometric ratios give reason |
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| 58037. |
Unit of lungs |
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Answer» Tnanks subham?? Alveoli are the functional unit of the lungs |
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| 58038. |
Why dowalls of trachea not collapse when there is less air in it |
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| 58039. |
What is balance and with examle |
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Answer» A reaction in which the no. of atoms are equal in reactants anf product side is called balanced chemical equation.Mg+O2=2Mgo A reaction in which has an equal number of atoms before and after chemical reaction is called balance equation for example 2h2s+3o2=2h2o+ 2so2 Balanced equation means a equation in which the number of atoms of each element on both the sides of arrow are made equal.. For ex- 2NaCl+2H2O--->2NaOH+H2+Cl2. |
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| 58040. |
What is mirror in light |
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| 58041. |
Why we use convex mirror in vehicles ? |
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Answer» Because image is smallerMore image can fit on the mirror Convex mirrors are commonly used as rear-view (wing) mirrors in vehicles because they give an erect, virtual, full size diminished image of distant objects with a wider field of view. Thus, convex mirrors enable the driver to view much larger area than would be possible with a plane mirror. |
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| 58042. |
Why are glomeruli considered as dialysis bag? |
| Answer» Glomerulus are considered as dialysis bags because in nephron glomerulus filters the blood by not absorbing unwanted salts and urea back ,also by dialysis machine filteration of blood is done but artificialy. Therefore,we can say that glomerulus is considered as dialysis bag. | |
| 58043. |
Why doesn\'t the lungs collapse even after forceful expiration? |
| Answer» Because of cartilageous bone | |
| 58044. |
If there were no algae there would be no fish in the sea. Comment |
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Answer» You are giving correct answer bro.. Algae are the main source of productivity in the sea.They prepare their own food by photosynthesis. They are a food to many aquatic organisms such as plankton,which are in turn feed upon by small and large fishes. Hence we can say that if there were no algae then there would be no fish in the sea. |
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| 58045. |
What is function f brain |
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Answer» Thinking SensingFeelings Control behaviour The main function of brain is control body parts |
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| 58046. |
What is the cause of diabetes? How it can be controlled? |
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Answer» Diabetes is caused due to deficiency of insulin.It can be controlled by taking minimum amount of starch sugar or glucose. Causes of Diabetes: Diabetes is either caused due to the insufficient production of insulin by the pancreas or it may occur if the cells of the body are not effectively responding to the insulin produced.Common tips on to control sugar:\tLose Those Extra Kilos\tFollow a Balanced Diet with Complex Carbs\tMaintain Regular Meal Schedule\tA minimum of 30 minutes of physical activity is a must for diabetics. |
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| 58047. |
Complete and balance the following chemical equations : NaCl+H2O- |
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Answer» NaCl + H2O - NaOH + HCl NaCl+H2O-NaOH+HCl NaOH+ cl2+ H2o 2NaCl+2H2O------>2NaOH+Cl2+H2 Sorry it\'s NaOH+Cl2 2Noah +h2 |
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| 58048. |
What are areas of forebrain |
| Answer» Forebrain: It is composed of the cerebrum.(i) It has regions which receives sensory impulses from various receptors. Based upon information and information stored in the brain, it make a decision how to respond. The information is passed on to motor areas which control movement of voluntary muscles such as our leg muscles.(ii) It is the site of intelligence and judgement.(iii) It controls intellect, speech, language, hunger and the spinal senses. | |
| 58049. |
Pumping of heart (blood) |
| Answer» The heart has four chambers two at the top(atria) and two at the bottom (ventricles)the normal trigger for the heart to contract arises from the heart\'s natural pacemaker the SA node, which is in the top chamber.The SA node sends out regular electrical impulses causing the atrium to contract and pump blood into the ventricle.The electrical impulse then passes to the ventricles through a form called AV node(Atria-ventricular node).This electrical impulse spreads into the ventricles causing the muscle to contract and to pump blood to the lungs and the body.Chemicals which circulate in the blood and which are released by the nerves that regulate the heart,alter the speed of the pacemaker and the force of the pumping action of the ventricles. | |
| 58050. |
Physics:Explain the structure oh human eye with a suitable diagram. 5mark question |
| Answer» Structure of Human Eye:The human eye is a spherical structure which fits in the eye socket in the skull bone. There are following main parts in the human eye.\tPupil: Pupil is the round black spot in front of eye. It regulates the amount of light entering the eyes. Pupil works like aperture of a camera. In case of dim light pupil dilate to allow more light to enter the eyes. In case of strong light pupil constrict allowing less light to enter.\tIrish: Irish is made of muscles. They control the size of opening of pupil.\tLens: Lens lies just behind the pupil. Lens becomes thin to increase its focal length. This enables us to see distant objects clearly. To focus on nearer objects, lens becomes thick to decrease its focal length. But there is a limit. The minimum distance of clear vision is 25 cm. Below this distance, we cannot see things clearly.\tRetina: Retina works like a screen or camera film. Retina is full of light and colour sensitive cells. These cells, upon receiving image send electrical signals to the brain, which processes these information to make a mental image of what we see. The photoreceptor cells in the eye are of two types, viz. rod cells and cone cells. The rod cells are sensitive to dim light. The cone cells are sensitive to bright light and colour. | |