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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.
| 55901. |
Why convex mirror is called a diverging mirror? |
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Answer» When parallel light rays fall on the surface of convex mirror then after reflection those rays seem to meet (diverge) at a single point but actually they do not meet. So, it is called diverging mirror. Concave mirror is called a converging mirror because parallel rays of light fall on the mirror they converge at a point called focus. Because it diverge the light |
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| 55902. |
Can you tell me- the metal which have highest melting point & lowest melting point? |
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| 55903. |
Explain why concave mirror is a converging mirror |
| Answer» Because it converges the rays to the focus in front of the mirror | |
| 55904. |
what is a mastermisan |
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| 55905. |
What is genotipic and phenotipic ratio of F1 generation of diahybrate cross of pea plant |
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Answer» 3:1 in phenotypic or 1:2:1 In genotypic In phenotypic 3 plant are tall and 1 is short 100%tall |
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| 55906. |
Evolution of a gas koi samajhaa do with example ke saath |
| Answer» evolution reaction is a chemical reaction in which one of the end products is a gas such as oxygen or carbon dioxide.Example: 1.H2CO3(aq.) forms H2O(l)+CO2(g).2. C+O2 forms CO2(g). | |
| 55907. |
What is PH value❓ |
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Answer» Is is defined as which measure the solution of acid or base is known as Ph value PH value is the value that show the substance is either acid or base.ph from less than 7 are said to be acidic character , ph on 7 are said to be neutral and the ph above 7to14 are said to be basic character. |
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| 55908. |
Chapter 9 biomolecule class 11 |
| Answer» Dude! This section is for class 10th.If You want help for class 11th go and change your settings:))) | |
| 55909. |
Chapter 10 ko kaishe pade |
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Answer» Ok thanks You can understand it by watching video on youtube.And doing practical experiment:)? |
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| 55910. |
What Is feedback machenism |
| Answer» The timing and amount of hormone released by various glands are controlled by feedback mechanism which is inbuilt in our body.The cells of glands acts as an feedback mechanism which instruct gland to secreate and when to stop secretion | |
| 55911. |
Name a common nutrients that is absorbed in small intestine and reabsorbed by the kidney tubules ? |
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Answer» Glucose and amino acids Yes protein Amino acids |
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| 55912. |
What is snell s law |
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Answer» The ratio of sine of angle of incidence to the sine of angle of refraction is constant , for a light of given colour and for a given pair of media. This is known as snell\'s law of refraction. Sini =Sinr The ratio of sin of angle of incident to sin of angle of refraction is always constant.Sin i/Sin r =u (mu).It is called snell\'s law |
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| 55913. |
What are the function of Ozone layer |
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Answer» The main function of Ozone layer is absorb the Sun\'s ultraviolet radiation, hences protecting the earth from its harmful effect.✔ Ozone present in the upper regions of the atmosphere protects us from dangerous UV radiations.Formation of ozone layer:Ozone at the higher levels of the atomosphere is a product of UV radiation acting on oxygen molecule. The higher energy UV radiations split apart some molecular oxygen into free oxygen (O) atoms. These atoms then combine with the molecular oxygen to from ozone as shown:O2\xa0→ O+ OOxygen and single oxygen combines to form ozone.Chlorofluorocarbons (CFCs) are responsible for the depletion of ozone layer. These compounds enter the atmosphere through sprays, aerosols, refrigerators, air conditioners, etc., which use CFCs. It absorbe the ultra voilet rays which causes cancer |
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| 55914. |
how are u |
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Answer» You Fine |
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| 55915. |
Explain excretion in human beings in detail for 5 marks |
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Answer» Excretory system contain a pair of kidney ,two ureters ,a urinary bladder and a urethra .The unit of kidney is nephron . Kidneys are most important part of excretory system.There are two main steps for urine formation :1. Ultrafiltration of blood:The blood present in glomerulus is rich in nitrogenous waste .It is filtered out across the capilary wall and wall of Bowman\'s capsule.2.Reabsorbtion of useful substances :After filtration useful substances like glucose ,amino acid,excess water are re absorbed by tubule .After re absorbtion only urea ,uric acid ,some unwanted salt and some amount of water is left behind in tubule . This liquid form is urine .Urine is slightly acidic ,pale coloured liquid which contain water ,urea ,uric acid and some salt.3. Secretion: The urine is secreted into the tubule which open up into collecting duct and then into ureter. \tA pair of kidneys, a pair of ureters, a urinary bladder and a urethra constitutes the human excretory system.\tKidneys are present on either side of the backbone in the abdomen.\tKidneys produce urine and urine from kidney passes through the ureters into the urinary bladder and remains stored their until it is released through the urethra.\tUrine is produced to filter out waste products from the blood.\tNephrons are basic structural and functional unit of kidney.\tCluster of thin walled blood capillaries called glomerulus in the nephron filtrate the urine and each cluster is associated with cup shaped end of a tube called Bowman’s capsule.\tSubstances like glucose, amino acids, salts and a major amount of water is selectively reabsorbed from the initial filtrate as the urine flows along the tube.\tReabsorption depends on the amount of excess water in the body and dissolved waste to be excreted.\tThe urine from kidney enters the long tube called ureter.\tUreter connects the kidney with the urinary bladder and urine from the kidney is passed to urinary bladder and stored in the bladder.\tWhen the pressure in the expanded bladder leads to the urge to urinate, the urine is passed out through urethra. First kidney then bladder then urethra then out then toilet then gattar then patiala |
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| 55916. |
How many of you are giving NTSE exam on 4 November 2018. |
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Answer» I also Me too...? Some of my frnds |
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| 55917. |
Scientific name of pig and bull |
| Answer» Pig - Sus scrofaBull - Bos taurus | |
| 55918. |
How many covalent bonds in c4h8, c2h6, c5h12, c5h8 |
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| 55919. |
What are enzaymes?? |
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Answer» Enzymes are the biological catalyst which maintains the rate of metabolic activities Enzymes are the catalyst which change the rate of metabolic activities. |
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| 55920. |
Throid gland secrete which hormone |
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Answer» thyroxine hormone Thyroxine hormone Thyroxin harmone Thyroid hormone |
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| 55921. |
what are the limitations of newland\'s????? |
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Answer» thanks you both for answer me Newlands assumed that only 56 elements existed in nature and no more elements would be further discovered in the nearer future. But later on several new elements were discovered, whose properties couldn’t be defined as per the Law of Octaves.In order to fit elements into law of octaves Newlands not only adjusted two elementsin the same slot but also adjusted some unlike elements under the same note.Cobalt and nickel are in the same slot and are positioned in the same column with fluorine, chlorine and bromine possessing different properties than these elements.Iron possessing similar properties as cobalt and nickel, is placed far away from these elementsThus, Newlands’ Law of Octaves can be obeyed well by the lighter elements only. Abe ye koin sa answer hai Limitations of law of octaves: The law of octaves has the following limitations ; (A) The law of octaves was found to be applicable only upto calcium. It was not applicable to elements of higher atomic masses. ... (C) Newlands placed two elements in the same slot to fit elements in the table. |
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| 55922. |
What is Double displacement Rxn? |
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Answer» Exchang of ions is known as Double displacement Rxn. The reaction in which two compound to exchange their ion to form to new compound is calked double displacement reaction. When a more reactive metal from its salt solution or compound displaces another less reactive from its salt solution or compound due to which exchange of ions occur, such reactions are called double displacement reaction The reaction in exchange of ions take place betw3en reactantband product A reaction in which new compound is formed by mutual exchange of ions between two compounds |
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| 55923. |
Why Pituitary gland is called Master gland ? |
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Answer» Because it controls most of the activities in our body Because it looks after all the glands.. |
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| 55924. |
Define eletromagnet? |
| Answer» When current flow through in a any conductor then it start working as a magnet is known as electromagnet | |
| 55925. |
What is Death ? |
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Answer» When all the organs in our body stop functioning The stage of realizing truth. Everything get finished Universal truth End of problems. End of life The end of life |
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| 55926. |
Which disease is caused in human being due to depletion of ozone layer in the atmosphere? |
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Answer» skin disease and the eye disease name cataract Skin diseases Skin cancer Cancer |
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| 55927. |
A glass rod is rubbed with a silk cloth.What type of charge is acquired by silk cloth |
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Answer» Static charge Stationary charge |
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| 55928. |
Identify the substances which oxidized and reduce |
| Answer» Where is substance? | |
| 55929. |
Whatisthe smallest bone in human body |
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Answer» Staples Stapes is the smallest bone in human body Stapes Ossicles Stapes is the smallest bone in human body. |
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| 55930. |
what was the agreement of 1987 |
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| 55931. |
How can you say that the image formed on a screen is a real image??? |
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Answer» An image which is formed by converging of rays at a point is called a real image When the rays actually meet after reflwction , the image formed is real and inverted When the image is real and inverted on the left side of concave mirror when the rays actually meet after reflection ,the image formed is real and inverted. When image is inverted |
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| 55932. |
Proof of Einstein\'s mass energy relation - e=mc^2 |
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| 55933. |
In which organ name the implantation of embrayo? |
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Answer» Uterus Uterus Uterus Uretrus |
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| 55934. |
Why did mandeleev leave some gaps in his periodic table?Posted by CH Jaat devata |
| Answer» So that new elements can be fitted in this | |
| 55935. |
Why do star twinkle ? |
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Answer» The star is twinkling due to causes by atmospheric refraction that is in that time the distance between star and earth maximum so this refraction have more so the star is twinkling. They do not twinkle in real but they appears to twinkle because of atmospheric refraction.?. The star we see with naked eye doesn\'t twinkle in real. But due too refraction(change in path of light due to change in medium i.e. form vaccum to air) we feelthat star does twinkle |
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| 55936. |
The proof for the fact that protein synthesis ocurrs through..........was given by george beadle. |
| Answer» Please answer | |
| 55937. |
What do you mean by blind spot |
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Answer» The image is formed at non sensitive cell is called Blind spot. In this situation person is not able to see. When image is not sent to the brain that point is called blind spot Blind spot is the region on the retina of the eye and is called as optic disc. Images are not detected by this region of the eye as it is devoid of photoreceptors (rods and cones). This is the region through which optic nerve leaves the eye to reach the brain. This region also provides a gap through which blood vessels enter the eye to supply blood to all parts of the eye. |
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| 55938. |
Write the molecular formula of first two members of homologous series having functional group _Br |
| Answer» 1 bromo methane | |
| 55939. |
Is variation only beneficial to individuals or to species |
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Answer» Species Individuals |
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| 55940. |
The products of chlor alkali process are |
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Answer» Sodium hydroxide ,chlorine gas ,hydrogen gas Sodium hydroxide |
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| 55941. |
How brain protect shock and injuries |
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Answer» It has bony skull three protective layer called menings and cerebro spinal fluid Its has a bony skull3protective layer called meninges And cerebrospinal fluid By cerebrospinal cord |
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| 55942. |
How we can say nerve cells are similar to other cells? |
| Answer» Neurons are similar to other cells in the body because:1.Neurons are surrounded by a cell membrane.2.Neurons have a nucleus that contains genes.3.Neurons contain cytoplasm, mitochondria and other organelles.4.Neurons carry out basic cellular processes such as protein synthesis and energy production. | |
| 55943. |
What is addition and substitution reaction |
| Answer» The reactions in which unsaturated hydrocarbons turn into saturated hydrocarbons are known as addition reaction.The reactions in which single bond hydrocarbon turns into double or triple bond hydrocarbons is known as substitution reaction. | |
| 55944. |
What is photo tropism,how does it occur? |
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Answer» The growth of plants toward the light is know as phototrophism. Photo tropism= the plant part response to light in which light is stimuli is called phototropism |
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| 55945. |
10 class ma practical lane ka liya bahar se koi teacher ata hai ki nahi |
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Answer» Harshit to ye questions yahna puch raha hai No |
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| 55946. |
Why should a magnesium ribbon clean before burning in air |
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Answer» Magnesium is a metal and it reacta with air and moisture to form basic layer of magnesium carbonate and magnesium ozide which do not catch fire .So it should be cleaned before burning in air To clean oxidised layer on magnesium ribbon There is a layer of oxide on magnesium ribbon so it is necessary to rub it so that oxide layer can remove Magnesium reacts with oxygen and forms a layer of magnesium oxide when kept in air.Hence magnesium ribbon is cleaned with sand paper before burning in air for further oxidation. Because tyere may be some dust on it which may lead to problems |
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| 55947. |
Define Fragmentation? |
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Answer» a supply of something, a piece of equipment, etc. that is available for somebody to use The mode of reproduction in which a simple multicellular break down into two daughter part |
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| 55948. |
Chemical formula of lactic acid |
| Answer» COH2OH | |
| 55949. |
What is magnetic ferric oxide |
| Answer» | |
| 55950. |
Which protein digesting enzyme is present in pancreatic juice ? |
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Answer» Trypsin ,lipase ,pancreatic amylase In pancreatic juice digestive enzymes like pancreatic amylase,trypsin and lipase contains |
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