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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.
| 66801. |
What are the properties of ethanol |
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Answer» It is a colourless ,volatile liquid.Dissolve in water in all proportions Has pungent smell used for making whiskey Reacts with acetic acid to form sweet smelling compound ester Used in medical purpose in cough syrupsIngrident for making alcohol Reacts with sodium to form sodium acetate and releases hydrogen gas On heating in presence of con H2SO4 it forms ethene 1. ♥️ ethanol is liquid at room temperature. 2.? it is also used in medicine suggest cough syrups and many toxin .3 it is also syllable in water. it is a physical property. now I tell you chemical property of ethanol 1. Reaction with sodium for example when sodium react with ethanol it give sodium ethoxide plus release hydrogen gas 2. Reaction with acid for example when ethanol debited into acid it break down into Ethane and give some water . So I wish you like the answer thank you |
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| 66802. |
alkali earth metal accures in which group |
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Answer» 1st group because alkaline is 2nd Group 2 Group 2 |
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| 66803. |
What is function of amylase |
| Answer» \tSaliva secreted into the buccal cavity contains electrolytes such as Na+, K+, Cl−, HCO3-and enzymes such as salivary amylase and lysozyme.\tThe hydrolytic action of salivary amylase hydrolyses starch into maltose.\tAmylase acts on carbohydrates and converts as maltose. | |
| 66804. |
Why does sun appears higher than its actual position during sunrise and sunset? |
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Answer» It is because atmospheric refraction. Bcoz of atmospheric refraction |
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| 66805. |
what is diffrence between soap and detergent? |
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Answer» There is one more difference that soaps are sodium and potassium salt and detergents are ammonium and sulphonate salt Soaps react with only soft water to form lather otherwise form scum on reaction with hardwater while detergents react with both soft and hard water to form latherWhile soaps are biodegradable ,detergents are not biodegradable |
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| 66806. |
what is a source of energy |
| Answer» Source of energy is object or a substance which provides us energy in the form of heat, light and in other forms. Example :sun. | |
| 66807. |
What is the formula of gypsum ? |
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Answer» CaSO4. 2H2O CaSO4 .2H2O CaSO4.2H2O |
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| 66808. |
Why is cryolite added to bauxite in the extraction of aluminium? |
| Answer» | |
| 66809. |
What is perennial? |
| Answer» Long lasting like perrenial river which has water throughout the year. | |
| 66810. |
Cbse question paper class 10 of 2015 |
| Answer» Its available in this app.......... | |
| 66811. |
What is gavalometer needle |
| Answer» | |
| 66812. |
Badal white kyu dikhte hai |
| Answer» The water droplets present in clouds are bigger than wavelength of all 7 colors of light. Therefore the water droplets scatter the entire spectrum. That\'s why cloud appear white ...... Hope yu can get yur answer.....?? | |
| 66813. |
Transitions elements kya hota hai yr |
| Answer» The elements which are quite heavy amd have several valencies . Example- iron it has valency 2,3 | |
| 66814. |
What is intensity of light |
| Answer» | |
| 66815. |
Difference between AC nad DC |
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Answer» Frequency of AC is 50-60 hertz and frequency of DC is 0 Hertz..... Ac stands for alternate current AC means alternative current n DC means direct current . DC is more dangerous as compared to AC |
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| 66816. |
Mention the role of the head to the sperm |
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| 66817. |
What is DNA Copying? State its importance |
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Answer» Dna coppying is required to maintain the no of chromosome of an speicies and to maintain the population. DNA in the cell nucleus is the information source for making protein and different protein lead to different body design during reproduction similar copy of DNA is generated and the process is called DNA copy. During reproduction in organism rebirth to another organism whose body design is similar to the parrot DNA contain the body design information and hands during reproduction the DNA is copied to give birth to an organism in similar border design It is important for transfer of characters from parent to their offspring |
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| 66818. |
Explain about aquired and inherited traits |
| Answer» Acquired traits= Those traits we gain by ourselves or we aqire those character which we want to change or adapt. Eg. Dancing ,singing,swiming.These we can change in our lifetime.Inherited traits=those trait which we gain by our parents. Eg. Colour of skin, eye colour, etcWe cant change it. It will remain with us whole lifetime. | |
| 66819. |
State the function of choroid. |
| Answer» The choroid is found between schlera and retina.It have blood vessels and brings oxygen and nutrients to the eyes | |
| 66820. |
Define astigmatism.How it is corrected? |
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Answer» Defect of eye in which vertical and horizontal lines are not visible. It is corrected by using cylindrical lens. In astigmatism, both vertical and horizontal lines are not focused properly.It is due to the effect on the curvature of the cornea or lens.It is corrected by using cylindrical lens. |
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| 66821. |
How we count least cont in voltmeter and ammeter |
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| 66822. |
Write the test to identify the presence of ethanoic acid? |
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Answer» When ethanoic acid reacts with sodium bi carbonate or sodium carbonate, it forms salt water and release carbon dioxide gas which have brisk effervescence. Also ethanoic acid turns blue litmus red. I) litmus paper test -blue to redII) sodium carbonate test - formation of brisk effervescence III) esterification reaction - sweet smell CH₃COOH + C₂H₅OH →CH₃COOC₂H₅(ester) + H₂OIt will give sweet smell. |
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| 66823. |
Alcohol can be prepared by the hydration of? |
| Answer» Alkenes. | |
| 66824. |
Yarr bio subject is soo confusion less. |
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Answer» Just learn in points Oo |
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| 66825. |
?? In which case concave Mirror form a virtual and erect image of the object..?? |
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Answer» Image will be formed behind the mirror when it will put between the principal focus and pole of the mirror When object is placed between focus and pole.. |
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| 66826. |
Why ozone hole forms over Antartica |
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| 66827. |
Class 10th science project |
| Answer» | |
| 66828. |
Why is diffusion insufficient to meet oxygen requirnment in multi cellular organism ? |
| Answer» because all the cells are not in direct contact with environment | |
| 66829. |
Explain the cleaning action of soap with the help of diagram |
| Answer» | |
| 66830. |
Can any1 help me 2 understand what is oxidation and reduction |
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Answer» Reduction is the transfer of electrons between species in a chemical reaction where there is a process of gaining electrons or a decrease in the oxidation state by an element. Oxidation is the loss of electrons during a reaction by a molecule, atom or ion. Oxidation occurs when the oxidation state of a molecule, atom or ion is increased. Adding up of oxygen or removing hydrogen in an chemical reaction is called oxidationAdding up of hydrogen or removing oxygen in a chemical reaction is called reduction |
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| 66831. |
What is the least count of voltmeter and ameter |
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Answer» The minimum potential differences measure by voltmeter between two terminal. Is called least count of voltmeter Zero A great welcome Least count of voltmeter is 0.5volt |
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| 66832. |
what is electron affinity |
| Answer» Electron affinity\xa0The\xa0energy released\xa0when an\xa0electron\xa0is added to a\xa0neutral gaseous atom\xa0is known as\xa0electron affinity.\xa0The\xa0unit\xa0for\xa0electron affinity\xa0is\xa0kilo joules per mole. It depends mainly on two factors. They are atomic size and nuclear charge.\xa0Atomic size: As the atomic size increases the nucler\xa0attraction force on the valence shell decreases. Thus electron affinity will be more for smaller atomic size elements.\xa0Nuclear charge:Electron affinity increases with increase in the nuclear charge. With the increase in nucler attraction force the electron in the valence shell binds strongly to the atom.\xa0Trend in electron affinityThe\xa0electron affinity\xa0increases across a period\xa0while it\xa0decreases\xa0down a group. The\xa0zero group\xa0elements\xa0have the\xa0lowest electron affinity\xa0values. Halogens posses highest electron affinity in the periodic table. In halogens chlorine posses highest electron affinity in the periodic table. | |
| 66833. |
What is acid rain? Answer in short |
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Answer» The first rainfall mixed with harmful gases is Called acid rain oxides of sulphur and nitrogen react with water present in atmosphere cause acid rain The pH value less than 5.6 then it cause acid rain Rain that has harmful chemical in it from factor etc. That causes damage to trees,crop,buildings and river |
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| 66834. |
Why diffusion insufficient to meet the oxygen requirements of multicellular |
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Answer» Diffusion is insufficient to meet oxygen requirements are (1) it is very slow process (2) it will take very large amount of time for oxygen to reach each and every part of body (3) that is why diffusion is insufficient to meet the oxygen requirement Because body of multicellular organism have comlex structure |
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| 66835. |
What is mirror if magnification is minus one |
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Answer» Mirror* Concave mirroe......! Concave mirror Because in mirror v is negative so it is taken as -v/u Concave mirror |
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| 66836. |
How to make diagram of nephron |
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Answer» Its there on google... Feom NCERT Refer your NCERT..... |
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| 66837. |
What are the various methods to avoid pregnancy? Elaborate any one of method |
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Answer» Copper T is the best method to avoid pregnancy Barrier method-By using condoms or diaphragm sperm cannot meet the egg or ovum |
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| 66838. |
What is cause of dispression of light |
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Answer» A narrow beam of light rays strick on surface and particle split it like tyndall effect.it is the cause of that Sorry 60 degree Bacause prism has incined surfaces each equals to 90 degree Reflection |
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| 66839. |
vegetarian food habits can sustain larger number of people.Explain. |
| Answer» \tVegetarian food means consuming the producers. Producer is the first trophic level of the terrestrial food chains.\xa0\tGenerally organisms at the lowest trophic level are always greater in number. As we move to the higher trophic levels, the number and the complexity of organisms increase.\tProducers support large number of organisms.\tHence, vegetarian food habit can sustain a large number of people. | |
| 66840. |
distilled water does not conduct electricity while rain or tap water does.why? |
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Answer» Distilled water cannot conduct electricity because it does not contain ions while rain water conducts electricity as it contains ions due to presence of dissolved salts in it. Tap water contain dissolved salt and minerals which ionized in water so it conduct electricity but distilled water does not contain dissolved salt and mineral which does not ionised in water so it does not conduct electricity |
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| 66841. |
Please provide me isucceed sample papers ... |
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Answer» No its not there if you know the site.. Plz send the link ...Or anyone else who have bought it can plz send me pics I think u can refer to google or intetnet for this....they are available there....i suppose..!!!! |
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| 66842. |
Why mandel choose pea plant |
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Answer» A) they have contrasting traits B) they are easy to growC)they have short life span so easily more generations can be studiedD) they are bisexual so self as well as cross pollination can be easily occured in themE) after all they are still cheaper aur pata nahi mendel ke time me bhi sasta hoga nahi to pyaaj par to uske bhi aansu nikal gaye honge Because it is self pollinating and also show contrasting characteristics. |
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| 66843. |
Organisms depend on the producers either directly or indirectly for their sustenance? |
| Answer» Consumers i.e.herbivores....carnivores.....omnivores......parasites etc | |
| 66844. |
Difference between veins and arteries I |
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Answer» Arteries carry blood from the heart to the rest of the body.veins carry blood from the rest of the body back to the heart. Veins are thin-walled arteries are thick walled veins carry deoxygenated( blood except pulmonary )veins arteries carry oxygenated blood veins carry blood from body parts to the heart and arteries carry blood from heart to all the body parts |
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| 66845. |
Write about the digestive system of human body with structure |
| Answer» | |
| 66846. |
Name some flowers which doesnot reproduces bisexually |
| Answer» Rose | |
| 66847. |
Describe the Structure and function of heart |
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| 66848. |
Why cutted apple colour turn brown, when we leave it in air for some time... |
| Answer» When you cut an apple, you are exposing it\'s insides to the oxygen in the air. This causes the PPO (polyphenol oxidase) enzyme in the apple\'s flesh to oxidize the polyphenols, turning them into some other brown colored products. Hence, the color change. | |
| 66849. |
Diference between the action of pepsin & trypsin |
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Answer» Pepsin is an enzyme which acts only in acidic medium ,trypsine is an enzyme which acts in alkaline medium. pepsin is secreted by gastric juice, trypsin secreted by pancreatic juice. Pepsin is secreted in stomach, trypsin is secreted in small intestine. Pepsin is situated in gastric glands, trypsin is situated in pancreas. Pepsin is secreted by gastric gland that present in stomach But trypsin is secreted by pancreas... |
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| 66850. |
What is the pH value of human blood??? |
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Answer» The human blood is nutral which is 7.40 7.2 |
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