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InterviewSolution
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.
| 64251. |
Opening and closing of stomata is due to |
| Answer» Guard cell loss of water | |
| 64252. |
Why some carbon compound are saturated and unsaturated? |
| Answer» Compounds formed because of the combination of hydrogen and carbon are known as hydrocarbons. There are two types of hydrocarbon, viz. saturated hydrocarbon and unsaturated hydrocarbon.Saturated hydrocarbons: Hydrocarbons having single bonds are known as SATURATED HYDROCARBONS. Saturated hydrocarbons are known as ALKANE. These are also known as paraffin. Example: Methane, Ethane, Propane, etc.Unsaturated hydrocarbon: Unsaturated hydrocarbons are of two types – Hydrocarbon with double bond and hydrocarbon with triple bond. | |
| 64253. |
I enroll in anthe exam .how can l prepare for it ? Please reply fastly. |
| Answer» By doing nothing Only just do time pass | |
| 64254. |
Who acid is highest powerful |
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Answer» H2so4 When we put an acid into water then it is completely ionized in water and produces a large amount of hydrogen ions. Because it fully ionsed in water and produce large amount of hydrogen ions. The acid which produces large amount of hydrogen ion when dissolve in water like. HCl |
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| 64255. |
With a help of activity, show the presence of microorganism in the air |
| Answer» | |
| 64256. |
What is guttation???? |
| Answer» Guttation is the process by which a plant loses exudates with water from hydathodes. Guttation is caused by positive hydrostatic pressure which develops in the xylem cells of the root. Guttation helps the plant to cool its body and regulate its temperature. It is different from the bleeding caused in plants. | |
| 64257. |
Whic acid is found on satrun? |
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Answer» Carbon dioxide is found in the large quantity Formic Mera lvda lee le |
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| 64258. |
Explain tincture of Iodine in 3 marks |
| Answer» Tincture of iodine or iodine tincture is an antiseptic, it is also called weak iodine solution. Usually 2–7% elemental iodine, along with potassium iodide or sodium iodide, dissolved in a mixture of ethanol and water. Antiseptics are used to kill the animate micro organisms that may be pathogenic or may cause disease. It is used in skin infection. | |
| 64259. |
Why is it essential to take measures to prevent corrosion |
| Answer» To protect metals from destroying or breaking down so that they can last long | |
| 64260. |
What is frictional force |
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Answer» Opposing force between two bodies is called frictional force Frictional Force refers to the force generated by two surfaces that contacts and slide against each other. These forces are mainly affected by the surface texture and amount of force impelling them together. The angle and position of the object affect the amount of frictional force.If an object is placed flat against an object, then the frictional force will be equal to the weight of the object.If an object is pushed against the surface, then the frictional force will be increased and becomes more than the weight of the object. |
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| 64261. |
WHAT IS A BARRIER? |
| Answer» Trade barrier is a called a barrier because some restriction has been set up. Governments handles the situation of foreign trade to increase or decrease through trade barriers and to decide quantoty of goods should come into the country. after independence trade barriers because it was considered necessary to protect the consumers from foreign competition.\xa0 | |
| 64262. |
Which. Base is the weakest |
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Answer» Ammonia(NH3) Mg(oh)2 |
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| 64263. |
Properties of carbon in colume |
| Answer» \tMost carbon compounds are poorconductors of electricity.\tThe atomic number of carbon is 6.\tThere are a number of pure forms of this element including graphite, diamond, fullerenes and graphene.\tDiamond is a colourless, transparent, crystalline solid and the hardest known material. Graphite is black and shiny but soft. The nano-forms, fullerenes and graphene, appear as black or dark brown, soot-like powders. | |
| 64264. |
Draw the diagram of the modern periodic table |
| Answer» In the Ncert | |
| 64265. |
Explain the work of the electric generator. |
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Answer» Electric generator is used to convert mechnical energy into electrical energy...by two principles nmely ....magnetic effects of current and....elctromagnetic induction.... *It work on the principle electromagnetic induction*It turn mechanical energy into electrical energy Electric work on the cocept of electromagentic induction. |
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| 64266. |
What is magnetic effect of current plzz report me |
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Answer» Infact it is nothing it is only said that the current carrying conductor produce magnetic field around it A magnetic field is set up around a current carrying cunductor this is known as magnetic effect of current |
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| 64267. |
CH3-CH2-CH2-C=O-OH |
| Answer» Butanoic acid | |
| 64268. |
State the law of reflection.... |
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Answer» It is very simple 1st law;;-----. Angle of incidence =equal to angle of reflection2nd law;;;-----incident ray , reflected ray and normal drawn on a same plane Angle i=angle r Angle of incedent ,reflection,normal lies on same plane |
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| 64269. |
What is ovary blooding |
| Answer» Overloading is only occurred when the negative wire and positive wire come with contact to each other | |
| 64270. |
Best book fr science |
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Answer» Off course s -chand is best among all S chand Schand... Pearson E xam idea or all in one Schand |
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| 64271. |
Define Retentivity |
| Answer» Retentivity is the power of remaining magnetised after the force of magnetisation is stopped. A material with high retentivity (i.e. iron) will keep some magnetic properties, it will become a permanent magnet, whereas a material with low or no retentivity will not keep the magnetic properties—it will lose its magnetization. | |
| 64272. |
Difference between reflection and refraction |
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Answer» Reflection means ke koi ek men ubho che to koi bijo avi ne ane achanak si mare ane reflection kahvai REFLECTION OF LIGHT:the bouncing back of light from same surface.It is mainly found in mirror.REFRACTION OF LIGHT:the bending of light when it goes from one medium to another obliquely.Itis mainly fond in lenses. |
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| 64273. |
What happen when magnesium rebun is heated in air |
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Answer» When magnesium ribbon is heated in air, it forms white powder which is magnesium oxide It produce magnesium oxide MgO is in the form of white powder It produces magnesium oxide ( MgO ) |
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| 64274. |
Describe ph |
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Answer» Kitni bar phuchagi Ph is power of hydrogen.it is inversely proportional to the concentration of the hydrogen |
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| 64275. |
What do mean by factor on which the resistance of a conductor depends? |
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Answer» Resistance of a conductor depends on following factors..Area of cross section.LengthTemprature of the conductor Aise konse factor h jinpe resistance ka conductor( in which electricity is passed) depend krta h It means the factors which affect the resistance of a conductor.like...cross section area...temperature....length... |
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| 64276. |
Cbse 2018 ka solve paper |
| Answer» Arihant sample paper | |
| 64277. |
What is loding |
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Answer» \tIodine with the symbol ‘I’ is a dark gray or purple blackish nonmetallic element with atomic number 53 in the Periodic Table.\tIt is the least reactive and most electropositive halogen, even though it can form compounds with many elements.\tIt is mainly found on Earth as the water-soluble iodide in brine pools and oceans.\tIodine is an essential component in humans for a proper functioning of the brain. The human body contains nearly 20 milligrams in the thyroid gland. Whate is loding |
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| 64278. |
How to naming a carbon compount ??Plz answer It is important for me at this time ? |
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Answer» Hi Hello mate!!!!!??? |
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| 64279. |
What is neutralisation reaction ? Give two exames |
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Answer» When acid react with base then acid neutrilizes the base so this type of reaction is called neutralization reaction. When acid and base react with each other to produce salt and water then such reaction is known as neutralisation reaction. For example(i) HCl + NaOH → NaCl + H2O(ii) HNO3 + KOH → KNO3 + H2O In this reaction an acid and a base is reacted to firm salt and water.Ex. HCl+NaOH gives NaCl +H2ONaOH+H2SO4 gives Na2SO4 +2H2O |
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| 64280. |
How can we define Snell\'s law? |
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Answer» According to this rule the sine of angle of incidence to the sine of angle of refraction is always equal to the constant. This is also known as second law of refraction. Second law of refraction is known as the snells law of refraction. It states ;Sine of angle of incidence divided by sine of angle of refraction is / is equal to constant |
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| 64281. |
Find the weight of magnesium oxide when 3g of magnesium is burned in oxygen? |
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Answer» Plz solve 6g 6 gram magnesium oxide |
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| 64282. |
Why do we have dreams during sleep? |
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Answer» It\'s not necessary..(your first answer). Their\'s no assurance about the end of theories regarding dreams. If you are really keen to know, there is a lot more to go ahead!! Dreams are series of happenings in sleep. These are generally originating from the experiences that we have when we are alert, which will be saved in our subconscious mind to reappear as dream. |
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| 64283. |
On opening soda water bottle co2 comes out ?what will be the change in its ph |
| Answer» More than 7 | |
| 64284. |
Which scientist discover melvin cycle |
| Answer» 1) The reactions of photosynthesis which do not require light energy are called dark reactions. These reactions occur both in presence and absence of light.2) Dark reactions occur in the stroma of the chloroplast and these were discovered by American scientist Melvin Calvin.3) In the first reaction carbon dioxide is accepted by Ribulose 1-5 biphosphate, a five carbon sugar to form hexose sugar.4) It is an unstable compound so it breaks down into two molecules of three carbon compounds called phospho glyceric acid (PGA). | |
| 64285. |
How many marks carries by reproduction chapter in board exam? |
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Answer» 8 I think of 6 or 7 marjs |
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| 64286. |
What is meant by voltmeter |
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Answer» Thanks Voltmeter is a current measuring device which is used to measure a very small amount of current which cannot be measured by an ammeter. |
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| 64287. |
how nerve impulses are transferred from one neuron to another in the nervous system |
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Answer» When impulse reach to nerve ending then it transfer to dendrites of other nerve through neurotransmitters Nerve impulses travel through the neuron and through nerve endings of that neuron to dendrites of other neuron by covering the synapse gap. By nerve endings of one nueron to the dendrite of other |
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| 64288. |
why is natural has called a clean fuel? give two reason? |
| Answer» Natural gas is called a clean fuel because:\tNatural gas burns cleaner than the other fossil fuels such as coal and oil due to the highly efficient combustion process, which produces very few by-products that are released into the atmosphere as pollutants.\tNatural gas produces 70% less carbon dioxide emissions compared to other fossil fuels.\tDue to the clean burning process, natural gas does not leave residues like soot or ash when compared to coal.\tNatural gas offers a high heating value, approximately 24,000 Btu per pound.\tNatural gas offers a high heating value, approximately 24,000 Btu per pound. | |
| 64289. |
what are fossil fuel ? name any two fossil fuels |
| Answer» Fossil fuels are currently used as the primary energy source for the world. They are formed over millions of years from organic materials in the Earth. Fossil fuels are considered to be non-renewable resources that were formed or created when prehistoric plants and animals died and were gradually buried by layers of rock.Examples of Fossil Fuels:1. Coal: It is the primary fuel for the production of electricity . The burning of coal and the mining process is harmful to the environment releasing air pollutants such as sulfur dioxide, nitrogen oxide, and mercury.2. Oil: Oil is the primary source for the world\'s transportation. Most oil is pumped out of underground reservoirs but may also be found in shale and tar sands. The crude oil is then refined to create the fuel such as heating oil, gasoline, petroleum gas, pesticides, fertilizers, plastics, and more. | |
| 64290. |
What is the role of bile where does it recreated |
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Answer» Bile is greynish in yellow in colour .It makes the acidic food coming from the stomach into alkaline so that pancreatic enzyme can act on it Bile is alkaline, and contains salt which help to emulsify or break the fats present in the food.\u200bThus bile performs to function:-1) makes the acidic food coming from the stomach alkaline so that pancreatic enzymes can act on it.2) bile salts break the fats at present in the food into small globules making it easy for the enzymes to act and digest them. |
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| 64291. |
What is thermal and drift velocity |
| Answer» Drift velocity is the velocity in charge carriers owing to the potential difference applied at the ends of the material it is similar to the drift of the electrons in a conductor dur to the potential difference applied across.Whereas the thermal velocity is the velocity due to excitation of electrons by heat energy. The is kind of velocity causes the current due to heating called thermal current causing the thermal potential. | |
| 64292. |
what is nephron ?state its function. |
| Answer» Nephrons are the basic structural and functional units of the kidney. They consist of a network of tubules and canals specialized in filtration.The nephron is a long tube that runs from the cortex into the medulla and back again to the cortex before joining another tube called the collecting duct.Functioning of Nephron1. Filtration: Filtration of blood takes place in Bowman’s capsule from the capillaries of glomerulus. The filtrate passes into the tubular part of the nephron. This filtrate contains glucose, amino acids, urea, uric acid, salts and a major amount of water.2. Re-absorption: As the filtrate flows along the tubule useful substances such as glucose, amino acids, salts and water are selectively re-absorbed into the blood by capillaries surrounding the nephron tubule.3. Urine: The filtrate which remains after re-absorption is called urine. Urine contains dissolved nitrogenous waste, i.e. urea and uric acid, excess salts and water. Urine is collected from nephrons by the collecting duct to carry it to the ureter. | |
| 64293. |
define right hand thumb rule |
| Answer» According to this rule if we stretch our forefinger,centre finger and thumb mutually perpendicular to each other of right hand.Then, if the forefinger points towards magnetic field,thumb points towards force or motion of condoctor then central finger points towards the induced current | |
| 64294. |
electrical potential |
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Answer» It is defined as the amount of work done in moving a unit positive charge from infinity to a definate position. In simple language we can say that the difference between the charges. |
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| 64295. |
What is image?????? |
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Answer» A visual representation of someone Which image A visual repersation of a person,animal or any object/thing.. |
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| 64296. |
Why filament-type electric bulb are not power efficient |
| Answer» The\xa0filament type\xa0- or Tungsten -\xa0bulb\xa0works on the principle that when currenr is passed through thefilament, it heats up turning into red, yellow and finally the yellowish white - which is the light we get. Now getting light by the process of excessive heating means that most of\xa0power\xa0is wasted as heat. | |
| 64297. |
How is tidal energy harnessed ? |
| Answer» Due to gravitational pull of mainly the moon on the spinning earth, the level of water in the sea rises and falls. The sea level changes during the day and during the night. This phenomenon is called high and low tides and the difference in the sea level gives us tidal energy.The tidal energy can be harnessed by constructing a dam across some narrow openings in the sea. During high tides, the rising water enters the dam and which can be made to fall over the turbines and generate electricity.The electricity generated is not high enough to produce electricity on a large scale. Then there would be limited sites only of sea where dams can be constructed. Thus tidal energy cannot be used as major source of energy. | |
| 64298. |
What is plastic |
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Answer» band lag gya h??? Ab mt pucho band lag gya h plastics par Do you know plastic ???? |
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| 64299. |
Chemical name of sodium oxide |
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Answer» Na2O Na2o Na2O Na2O Na2 |
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| 64300. |
Formula of nacl |
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Answer» Nacl is already formula Common name :- sodium chloride Sodium Chloride 2Na+2Hcl_______2Nacl+H2 Sodium chloride is answer |
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