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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.
| 53751. |
Why is voltmeter has high resistance? |
| Answer» Voltmeters are put in parallel with the load in order to measure the potential difference between two different points.\xa0If they are in parallel with the load, then at the first junction the current will split and flow into both paths . However, if current is flowing through the voltmeter, then it is not all flowing through the load, and the potential difference across the load would change when the voltmeter is added and removed. This is unfavourable. Therefore, the voltmeter must have a very high resistance so that current doesn\'t flow through it. | |
| 53752. |
Action of bile |
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Answer» And also bile salts present in bile juice are responsible for emulsification of fats Bile juice - It\'s main function is to convert acidic nature of food into basic because digestive enzymes present in pancreatic juice perform their function only in basic medium |
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| 53753. |
What is solar.eclipse |
| Answer» A solar eclipse is a natural event that takes place on Earth when the Moon moves in its orbit between Earth and the Sun\xa0(this is also known as an occultation). It happens at New Moon, when the Sun and Moon are in conjunction with each other. If the Moon was only slightly closer to Earth, and orbited in the same plane and its orbit was circular, we would see eclipses each month. The lunar orbit is elliptical and tilted with respect to Earth’s orbit, so we can only see up to 5 eclipses per year. During an eclipse, the Moon’s shadow (which is divided into two parts: the dark umbra and the lighter penumbra) moves across Earth’s surface. Safety note: do NOT ever look at the Sun directly during an eclipse unless it is during a total solar eclipse. The bright light of the Sun can damage your eyes very quickly. | |
| 53754. |
What is reactants |
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Answer» Substance which react are called reactants Those substance which take participate in chemical reaction is called reactant. |
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| 53755. |
What is meant by combination reaction |
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Answer» GOOD ANSWER BY MONIKA Very good answer given by Monika mishra . The reaction in which two or more reactants are combine together to form a single substance is called Combination Reaction. let \'A\' and \'B\' be any element .then,A+B=AB any compound. |
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| 53756. |
Why alkaline metals are called so |
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| 53757. |
What is unit |
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| 53758. |
What is unit and magnitude |
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| 53759. |
Explain the types of chemical reactions with the help of suitable examples |
| Answer» There are five types of chemical reactions 1.COMBINATION -reactions in which single product is formed from two or more reactants. Ex: CaO+H2O gives Ca (OH)22.DECOMPOSITION -reactionsin which single reactant breaks down to give simpler products. Ex: CaCO3 gives CaO+CO23.DISPLACEMENT-when an element displaces another element from its compound. Ex: Fe+CuSO4 gives FeSO4+Cu4.DOUBLE DISPLACEMENT -reactions in which two different atoms or groups of atoms are exchanged. Ex: Na2SO4+BaCl2 gives BaSO4+2NaCl5.OXIDATION AND REDUCTION -reaction in which one reactant gets oxidised while the other gets reduced during a reaction. It is also known as redox reaction. Ex: CuO+H2 gives Cu+H2O | |
| 53760. |
What is skeletal chemical equation |
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Answer» Tnx to all When the equation is unbalanced If the number of atom of any element in a chemical equation is not equal on both sides, then its called skeletal chemical equation It is the equation in which reactants and products are represented by their symbols and chemical formula. It is unbalanced chemical equation. |
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| 53761. |
What is the function of pulmonary vein? |
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Answer» And it comes from left ventricle. In this pure blood will flow at 80 mm/hg and as we know vein carry impure blood but it is the exception. I think that\'s enough. Through pulmonary veins oxygenated blood enters into left atruim |
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| 53762. |
Feso4 |
| Answer» Ferrous Sulphate | |
| 53763. |
Notes on rusting of iron |
| Answer» Due to corrosion. Using paints, galvanisation electroplating, alloy formation helps to prevent corrosion | |
| 53764. |
Difference between alveoli and blood vessels |
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Answer» Blood vessels:- A tubular structure carrying blood through the tissues and organs ,vein ,artery ,cappilary . Alveoli:- Bronchioles end into a balllon like structure called alveoli. It is the main functional unit of lungs. It is supplied with a number of blood vessels. It is the region where exchange of gases takes place. |
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| 53765. |
Melting of wax is a chemical change or physical change |
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Answer» Bboth chemical and physical change Chemical change |
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| 53766. |
What is perfect definition of alloy plz tell me |
| Answer» Alloy is a type of homogeneous mixture of two or more metal and non metal | |
| 53767. |
What is formula of rusting of iron? |
| Answer» Ferrous oxide | |
| 53768. |
What mean by oxidising agent |
| Answer» The agent which gives the supply of oxygen in chemical reaction are called oxidising agent. | |
| 53769. |
Write 10chemical equation other than book and balance them |
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| 53770. |
What us buffer |
| Answer» why are two gentleman in Verona important | |
| 53771. |
What is corrosion and Rancidity? |
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Answer» Corrosion metal are attacked by substance in surrounding like moisture and acid The oxidising degradation of oils /fats is called rancidity Is |
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| 53772. |
Cbse board question paper of 2017 |
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| 53773. |
What is the balanced equation ? |
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Answer» The process of making the number of diffrent types atoms equal on both the side an equation is called balanced equation A chemical equation is balanced so that the numbers of atoms of each type involved in a chemical reaction are the same on the reactant and the product of the equations. Balance equation means balance atom |
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| 53774. |
What is role of acid in our stomach |
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Answer» It is hydrochloric acid Kils bacteria that enter stomach along with food . Acid in our stomach is HCL. It kills all the bacteria present in our stomach and makes the food acidic |
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| 53775. |
State the Euclid division lemma algorithm |
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Answer» Divisor =dividend *quotient +remainder It is a Statement used to prove another statement |
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| 53776. |
Definition of chemical reactions |
| Answer» Chemical reaction is a process That leads to the transformation of One set of chemical substances to another | |
| 53777. |
Curd is not kept in copper and brass utensils.why? |
| Answer» because they can react with copper or metal and form harmful acid which is harmful to our body | |
| 53778. |
How human respiratory system work |
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| 53779. |
What is streptococcus pyrogen |
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| 53780. |
How we are formed |
| Answer» DNA | |
| 53781. |
Fleming\'s right hand rule |
| Answer» Fleming\'s right-hand rule (for generators) shows the direction of induced current when a conductor moves in a magnetic field. It can be used to determine the direction of current in a generator\'s windings.When a conductor such as a wire attached to a circuit moves through a magnetic field, an electric current is induced in the wire due to Faraday\'s law of induction. The current in the wire can have two possible directions. Fleming\'s right-hand rule gives which direction the current flows.The right hand is held with the thumb, first finger and second finger mutually perpendicular to each other (at right angles).· The thumb is pointed in the direction of motion of the conductor.· The first finger is pointed in the direction of the magnetic field. (north to south).· Then the second finger represents the direction of the induced or generated current (the direction of the induced current will be the direction of conventional current; from positive to negative) | |
| 53782. |
What is what is a dopamine |
| Answer» Dopamine is a neurotransmitter, a chemical responsible for sending messages between the brain and different nerve cells of the body.Dopamine is produced in three different areas of the brain: the ventral tegmental area (VTA), substantia nigra pars compacta and hypothalamus. These three areas of the brain affect different bodily functions, such as movement, memory, sleep, mood, pleasurable reward, behavior and cognition. | |
| 53783. |
What is the difference between oxidised substance and oxidising agent |
| Answer» The substance which reacts with oxygen and became oxidised is called oxidised substance. An oxidising agent is a substance that has the ability to oxidise other substance. oxyen hydrogen are some example of oxidising agent | |
| 53784. |
The function of glomerulus and bowmans capsule is to? |
| Answer» Purify the blood and forms urine | |
| 53785. |
How should a chemical equation is balanced |
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Answer» Chemical equation can be balanced by making the mass of reactent and mass of product equal. To balance a chemical equation we have to distribue equal atoms both the side. A chemical equation is balanced by making its number of atoms same to follow the law of conservation of mass with states that mask and neither be created nor be destroyed in a chemical reaction. |
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| 53786. |
Human reproduction system |
| Answer» The male reproductive system in human beings is composed of following parts:Testis: There is a pair of testes; which lie in a skin pouch; called *******. ******* is suspended outside the body; below the abdominal cavity. This helps in maintaining the temperature of testes below the body temperature. This is necessary for optimum sperm production.Vas Deferens: Vas deferens is the tube which carries sperms to the seminal vesicle.Seminal Vesicle: This is the place where sperms are stored. Secretions from the seminal vesicle and prostate gland add up to make the semen.*****: It is a muscular organ which serves the genitor-urinary functions. The urethra works as the common passage for urine as well as for sperms.Female Reproductive System:The female reproductive system in human beings is composed of following parts:Uterus: This is pear-shaped hollow muscular organ. Uterus is the place where the embryo gets implanted and develops into a newborn baby. The wall of the uterus provides safety and nutrition to the growing foetus.Fallopian Tubes: One fallopian tube comes out from each side at the top of the uterus. The fallopian tubes end in finger-like structures; called flimbriae. Fertilization happens in the fallopian tube.Ovary: 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.******: The cervix (mouth of the uterus) opens into the ******. ****** is a muscular tube-like organs; which serves as the passage for the sperms and also as the canal during the child birth. | |
| 53787. |
How baby. Reproduce |
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| 53788. |
explain the process of taking nutrition in humans |
| Answer» Nutrition in human beings\tNutrition in human beings takes place through parts like mouth, stomach, small intestine, large intestine, ****\tThe process of nutrition takes place through an alimentary canal which is a long tube extending from the mouth to the ****.\tComplex foods should be converted to smaller ones by crushing the food with teeth and by the enzyme salivary amylase of saliva secreted by salivary glands.\tSalivary amylase breaks down starch which is a complex molecule into sugar.\tAs the canal lining is soft so food is made wet to make the passage smooth.\tThe alimentary canal has different parts and the food should be moved in a regulated manner along the digestive tube so the food is processed properly in each part.\tThe canal has muscles that contract rhythmically to push the food forward and this movement of food is called peristaltic movement which occurs all along the gut.\tThe food is taken to the stomach through the food pipe or oesophagus from mouth.\tThe muscular wall of stomach mixes the food with more digestive juices secreted by the gastric glands present in the wall of the stomach.\tGastric gland releases hydrochloric acid, a protein digesting enzyme called as pepsin, mucus.\tEnzyme pepsin acts on the food and hydrochloric acid facilitates the action of pepsin.\tMucus protects the inner lining of the stomach from the action of acid under normal conditions.\tFrom stomach acidic food enters small intestine, the longest part of alimentary canal and this is regulated by sphincter muscle.\tComplete digestion of carbohydrates, protein and fats take place in the small intestine by the secretions of liver and pancreas.\tBile secreted by liver makes the acidic food alkaline and acts on large globules of fat into smaller globules so that the enzymes can act on easily.\tThe process of breakdown of large fats globules into small globules which increases the efficiency of the pancreatic enzymes is called\tPancreas secrete pancreatic juice which contains enzyme trypsin to break for digesting proteins, lipase for digesting emulsified fats.\tThe walls of the small intestine contain glands secreting intestinal juice which converts finally complex carbohydrates into glucose, proteins to amino acids and fats into fatty acids and glycerol.\tThe inner wall of small intestine has finger like projections called villi which are richly supplied with blood vessels and these take absorbed food to all the cells of the body.\tThe unabsorbed food is sent to the large intestine where more villi absorb water from this undigested material and the rest of the material is excreted from the body by ****.\tThe excretion of waste materials by **** is regulated by the **** sphincters. | |
| 53789. |
What is c6h12o6 can anybody tell me ? |
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Answer» It\'s formula of glucose. Glucose It\'s glucose It\'s Glucose Formula of glucose |
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| 53790. |
Why a burning candle gives us ligt |
| Answer» All waxes are essentially hydrocarbons, which means they are largely composed of hydrogen and carbon atoms.When you light a candle, the heat of the flame melts the wax near the wick. This liquid wax is then drawn up the wick by capillary action.The heat of the flame vaporizes the liquid wax (turns it into a hot gas), and starts to break down the hydrocarbons into molecules of hydrogen and carbon. These vaporized molecules are drawn up into the flame, where they react with oxygen from the air to create heat, light, water vapor (H2O) and carbon dioxide (CO2).Some information can be missed but its right | |
| 53791. |
What is Heritage |
| Answer» May be something that i dont know | |
| 53792. |
Characterstick of series connection |
| Answer» In series current are same. | |
| 53793. |
Characterstics of series connection |
| Answer» 1.) One switch is connected to the circuit.2.) If one appliance stop working in the circuit ,the whole circuit will stop working.3.) In this resistance is high due to which power/current supply is less.4.) In series arrangement all the appliances will get the same amount of current wheter it is 200V bulb or 0V bulb which is harmful. | |
| 53794. |
Why isn\'t anyone answering my questions |
| Answer» What is your question? | |
| 53795. |
What happen if we not clean the aqurium |
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| 53796. |
If acids react with non metal than what will form |
| Answer» Acid not react with non metal | |
| 53797. |
Who made cell |
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Answer» Robert hooke discovered the cell in 1665 and the cell is made by cell division From pre exiting cell Roberthooke(in1665) A cell made cell by dividing |
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| 53798. |
What is a Potentiometer??? |
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| 53799. |
What is the role of saliva in digestion food |
| Answer» The role of saliva in digestion of food is that the saliva secrets salivary amylase (it is a type of enzyme) this salivary amylase mix with the food and makes the food soft .So this soft easily get pass through the oesophagus (food pipe). | |
| 53800. |
What is the difference between resistance and resistivity of a conductor |
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Answer» resistance can be changed by changing length and area of cross section of conductor while resistivity cannot be changed by doing so. Same question here |
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