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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.
| 51901. |
Activities related to chemical reactions |
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Answer» Other are corrosion of any metal Melting of ice is not a chemical change it is a physical change Rusting of iron ,melting of ice |
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| 51902. |
Platinum ,gold and silver to make jewellery.why? |
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Answer» The three metals have all the properties of a metal[ductile,malleable,lusturous]but are less rective metals.Which implies these metals do not easily react with air ,water or any other substance. Because they are metals and because of their properties like they are ductile ,malleable and lustrous etc COZ they are malleable and ductile and are able to take any shape Because of their properties like lusture, durability, reactivity, etc. they are nobel metals and they are less reactive metals |
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| 51903. |
What is the chemical formula of bile juice and why it is yellow in colour |
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Answer» Green or yellow vomit, also known as bile, is produced by the liver and stored in the gallbladder. The release of bile occurs when an individual is vomiting oan mpty stomach or is suffering from bile reflux. The juice produced by liver is called bile juice it is a mixture and hence does not have any specific chemical formula. |
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| 51904. |
Explain the structure and function of human brain |
| Answer» Some main structures of the human brain are explained below.Cerebrum: The cerebrum is the largest part in the human brain. It is divided into two hemispheres; called cerebral hemispheres.Functions of cerebrum:\tThe cerebrum controls the voluntary motor actions.\tIt is the site of sensory perceptions; like tactile and auditory perceptions.\tIt is the seat of learning and memory.Hypothalamus: The hypothalamus lies at the base of the cerebrum. It controls sleep and wake cycle (circadian rhythm) of the body. It also controls the urges for eating and drinking.Cerebellum: Cerebellum lies below the cerebrum and at the back of the whole structure. It coordinates the motor functions. When you are riding your bicycle; the perfect coordination between your pedaling and steering control is achieved by the cerebellum.Medulla: Medulla forms the brain stem; along with the pons. It lies at the base of the brain and continues into the spinal cord. Medulla controls various involuntary functions; like hear beat, respiration, etc. | |
| 51905. |
What is a decomposition reaction |
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Answer» When two or more reactants split to form a product is called a decomposition reaction. In decomposition reaction,a compound is break into two or more substances . There are three type of decomposition reaction : 1.heat 2. Electricity 3.light A kind of reaction in which the reacting element decompises to its constituenting element, then this type of reaction is known as decompoaition reaction. It can be taken place with the help of light, electricity and heat When a compound is breaked into two or more elements is known as decomposition reactions when any compound get decompose in other form for example. H2O decompose H2+O2 |
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| 51906. |
Why stomata is not present in the upper epidermis |
| Answer» Because if stomata will present upper epidermis sunlight absorb whole water from the leaf. | |
| 51907. |
Why the colour of urine is yeellow |
| Answer» The urine colour is yellow becoz the less amount of water in urine | |
| 51908. |
Where is auxim synthesized in plants? |
| Answer» When a plant detect light,auxin hormone is synthesised at the shoot tip,help the cells to grow longer. When light is coming from one side of plant,auxin diffuse towards shady side of shoot.This concentration of auxin stimulate the cells to grow longer on the side of shoot which is away from light.Thus plant appear to bend towards light. | |
| 51909. |
Who is the small intestine design to absorb digested food |
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Answer» Please any one answered this question plz Ask the question again in hindi....COZ english is cool Answer me |
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| 51910. |
Working of A.C generator |
| Answer» When the Coil is rotated between the Poles of the Magnet by cranking the handle, an AC Voltage Waveform is produced. Operation principle of a Generator is based on Electromagnetic Induction, which is defined by Faraday\'s Law, which states: ... In the Generator, the Coil is under a Stationary Magnetic Field. | |
| 51911. |
Difference between arobic and anrobic |
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Answer» Aerobic:- takes place in presence of OxygenAnaerobic:- takes place in absence of Oxygen Aerobic respiration takes place in the mitochondria and requires oxygen and glucose, and produces carbon dioxide, water, and energy.Anaerobic respiration also produces energy and uses glucose, but it produces less energy and does not require oxygen. Please fast answer me |
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| 51912. |
Acid add in water and hydroxide ion produce but this is not show in reaction why |
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| 51913. |
How is oxygen and carbon dioxide transported in human being |
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Answer» You\'re welcome Thanks Oxygen is carried by haemoglobin And carbon dioxide is soluble in water therefore it is transported in dissolve form. Please fast answer me |
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| 51914. |
Acid add in water and hydrogen and hydroxide ions produce but hydroxide ion not show in reaction why |
| Answer» If we add acid in water it dissociate and produce H+ Ions and if we add base in water it dissociate and produce OH- Ions.... they are also shown in reactions | |
| 51915. |
Write down the steps for break down of glucose by various path way |
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Answer» Thanks You can see in the book of NCERT the table of bresk down of glouse by various pathway is given on page no 102 ? |
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| 51916. |
What is neurons? |
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Answer» Neurons are the contitutors of nerve cells that helps in transmitting messages in the form of waves Neuron is the structural and functional unit of nervous system. |
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| 51917. |
How to identify reactions in chemistry ch 1 |
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Answer» A+B = AB composition reactionAB=A+B decomposition reactionAB+C=AC+B displacement reactionAB+CD=AD+BC double displacement reaction Rxn |
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| 51918. |
What is H2SO4 |
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Answer» IT is a sulphuric acid with a ph value about 2.75 It is sulphuric acid. Sulfuric acid A strong acid |
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| 51919. |
Why is ammeter comnnected in series |
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| 51920. |
Functions of cerebrum and cerebellum |
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| 51921. |
How plants take nitrogen and use it? |
| Answer» Plants take nitrogen with the help of ribosomes present in their rootsNitrogen is so vital because it is a major component of chlorophyll, the compound by which plants use sunlight energy to produce sugars from water and carbon dioxide (i.e., photosynthesis). It is also a major component of amino acids, the building blocks of proteins | |
| 51922. |
Which medium is denser, air or vacuum???? |
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Answer» Ooooh thanks. Air Air |
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| 51923. |
What is sa 1 chapter of whole class of all subjet |
| Answer» Maths syllabus Chapter 1to7 ,14,15 | |
| 51924. |
four properties of convex mirror |
| Answer» Properties of the image formed by a convex mirror :The image is always virtual and erect.The image is highly diminished or point sized.It is always formed between F and P.The object and image are on opposite sides of mirror. | |
| 51925. |
What is the principal of generator |
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Answer» I also dont know mechanical to electrical energy Don\'t know |
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| 51926. |
Why do herbivoures has a longer intestine |
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Answer» Herbivore eats the food which is cellulose in present. For complete digest of complex food material. As they hove to digest complex cellulose |
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| 51927. |
Process of nutrition in paramecium |
| Answer» Sudopodiya | |
| 51928. |
Wht is decomposition |
| Answer» Decomposition is a type of chemical reaction. It is defined as the reaction in which a single compound splits into two or more simple substances under suitable conditions. It is just the opposite of the combination reaction.Example: Decomposition of calcium carbonate:Calcium carbonate (lime stone) decomposes into calcium oxide (quick lime) and carbon dioxide when heated. Quick lime is the major constituent of cement. | |
| 51929. |
Ohm Ki definition kya ha |
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Answer» 1 ohm is defined as if there is 1 volt of pd across 2 points and when 1 ampere current flow through it 1 ohm can be defined as when there is 1 volt of potential difference across two points and the 1 ampere of current flow through it.1 ohm = 1 volt / 1 ampere |
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| 51930. |
Is possible to make aqueous acid to concentrated acid and how or by which process? |
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| 51931. |
What is the definition of acid and base |
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Answer» They are sour in tAst,they convert blue into red. Are called acid ,& they bitter in taste &sopy to touch, they convert red to blue are known as base Acid -those substance which can produce hydrogen ion in dissolving in waterBase-those substance which can produce hydroxide ion in dissolving in water |
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| 51932. |
What is the ph value of blood in human body |
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Answer» 6.4 7.35 to 7.45 |
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| 51933. |
What is Life process? Explain it briefly.Explanation of human heart. (5) |
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Answer» The basic functions performed by living organisms to maintain their lives on earth is called life process. Life processes are those processes which help in the survival of an organism.Like - Digestion, Respiration, Transportation, Excreation, Nutrition etc are some important life processes. |
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| 51934. |
Write short note on aqua regia |
| Answer» It is a reddish yellow and orange fuming liquids.? | |
| 51935. |
Nutrition of 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. | |
| 51936. |
What are giberelin |
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Answer» It help in growth of plant A type of plant hormone which help in plant growth |
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| 51937. |
What is central nerve system |
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Answer» The combination of brain and spinal chord A type of nervous system which is responsible for 2 works at same time Ya It consists of brain and spinal cord |
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| 51938. |
How to identify reactions |
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| 51939. |
Displacement raection |
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Answer» It\'s which*? Displacement reation is a chemical reaction in ehich more reactive element displaces less reactive element from its compound. |
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| 51940. |
plants have nervous system ? if not have how they able to feel something? |
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| 51941. |
What happens when Ca(OH)2 is added with CO2 ??? |
| Answer» Caco3+H2o | |
| 51942. |
Why does a star twinkle |
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Answer» How in oxygen and carbon dioxide in human being solution The twinkling of stars is due to atmospheric refraction of star light |
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| 51943. |
Explain mendals law |
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| 51944. |
Define pituitary gland!!!! |
| Answer» A type of gland which is present in brain and secrete hormones for growth | |
| 51945. |
what is digestive enzymes |
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| 51946. |
Define:1) Natural Selection2) Genetic Drift |
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| 51947. |
What is resitivity? |
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| 51948. |
Aerobic nd anaerobic |
| Answer» "AEROBIC":-The respiration which uses oxygen to realease energy from food........."ANAEROBIC":-The respiration which takes place wtihout oxygen is called anaerobic respiration...!!!!! | |
| 51949. |
Chemistry Chapter 1 notes |
| Answer» It also available in this app bro!!!!! | |
| 51950. |
Explai how the develpoing embro gets nourishment inside the mother |
| Answer» | |