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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.
| 66051. |
1 to 5 question paper of physics |
| Answer» ... | |
| 66052. |
What is valancy |
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Answer» It is the combining capacity of an atom of an element to aquire nobal gas configuration . It depend upon the number of valence electron present in the outermost shell of an atom Valency\'s spelling is wrong.Valency is the no. of electrons that could be loosed, gained or shared among atoms to complete their (duplet or) octet. |
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| 66053. |
What does(+) and(-) sign magnification indicate? |
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Answer» +sign indicated that the image formed is virtual&erect ,-sign indicates that the image formed is real&inverted (+) sign indicates that the magnified or diminished image is erect (and virtual).(-) sign indicates that the magnified or diminished image is inverted (and real). |
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| 66054. |
Working of d.c genrator |
| Answer» it works on the principal of electromagnetic induction | |
| 66055. |
Why we are humans |
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Answer» Humans (taxonomically, Homo sapiens) are the only extant members of the subtribe Hominina. They are characterized by erect posture and bipedal locomotion; high manual dexterity and heavy tool use compared to other animals; open-ended and complex language use compared to other animal communications; and a general trend toward larger, more complex brains and societies. That\'s why we are humans. I dont know |
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| 66056. |
How is napthelin ball? |
| Answer» Naphthalene balls, also known as moth balls or camphor balls, are spherical pieces of a white solid material containing at least 98 percent naphthalene. They were widely used to repel moths and cockroaches and as deodorants for urinals and bathrooms. Naphthalene is carcinogenic and poses several other health hazards, so it is no longer used for household purposes in several countries. It is still widely available in several Asian countries, where naphthalene balls are used to preserve woolen fabrics. | |
| 66057. |
What will happen if we kill the all organism of trophic level |
| Answer» There will be no food available to the oraganisms in other trophic level who are dependent on organism in trophic level.Hence there will inbalance in enviournment. | |
| 66058. |
What is tissue culture ?why is it called micropropagation in vitro? |
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Answer» Thanku so much Tissue culture is a technique of growing plant or animal cells, tissues or organs in a sterilized nutrient/ culture medium under controlled environmental conditions. Plant tissue culture specifically is also known as micropropagation because it involves rapid multiplication of small amount of plant material to produce more progeny. Tissue culture is a technique to produce large no. of genetically modified plant. |
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| 66059. |
State two properties of lines of force |
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Answer» Properties of magnetic (field) lines of force are as the following.\t\xa0No two magnetic lines of force intersect each other.\tThe field lines emerge from North Pole and merge at the South Pole.\t\xa0The direction of field lines is from its south pole to its north pole.\t\xa0Magnetic field lines are the closed curves. Magnetic field lines cannot intersect each other..and magnetic field lines are closed nd continuous curve..? |
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| 66060. |
What is the difference between mutation and genetic drift??? |
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Answer» Thanx yogita and deepanshi Genetic drift accounts to random changes in the allelic frequency by chance. It is a chance of elimination of certain genes coding for certain traits as and when a small community of organisms dies. Genetic variability is reduced by eliminating certain alleles and fixing the existing alleles. Genetic drift occurs in small population. Genetic drift provides diversity without any adaptation. Variation in species may result in genetic drift.Mutation in genetic material leads to genotype and phenotype of an organism. Mutations are caused by many factors called as mutagens. Mutagens include physical factors and chemical factors. Mutations in the genetic materials can be gene mutation or chromosomal mutation. Gene mutations are again categorised into substitution, deletion and insertion mutations. Mutation is change in chromosomes no.Genetic drift means elimination of genes of certain traits by a section of species migrated by natural calamity |
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| 66061. |
What is the limitations of mendeleef periodic tablet |
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Answer» \tNo fixed position could be assigned to hydrogen in the Periodic Table.\tIsotopes discovered long after Mendeléev periodic classification of\telements imparted a challenge to Mendeleev’s Periodic Law.\tThe atomic masses of elements did not increase in a steady manner while going from one element to other which made it difficult to predict the number of elements that could be discovered between two elements. Could not assign correct position to hydrogen, position of isotopes could not be explained and wrong order of atomic masses of some elements could not be explained. |
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| 66062. |
What is down syndrom |
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Answer» Down syndrome is a common congenital chromosomal anomaly which is found worldwide. The condition occurs when there is one extra copy of chromosome 21 in cells in the body. The extra chromosome 21 material may affect the physical development and learning abilities of people with Down syndrome. Down syndrome is the most common genetic cause of learning disability. Down syndrome is not a disease or an illness that can be cured. People with Down syndrome do not suffer from it, nor is it anybody’s fault. Physical disabilities caused by genetic disorder also known as trisomy 21. |
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| 66063. |
Why herbivores animals have large intestine as compared to carnivores animals??? |
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Answer» Carnivores eat only meat of other animals which require very low nutrients/minerals to absorb.But herbivores eat plants which have high nutrients like cellulose ,protein etc .So for digesting them herbivores have a large intestine to provide greater surface. Herbivorous animals have longer intestines than that of carnivorous animals. This is because their diet is grass and plants, made up of fibre and cellulose which are hard to digest. As a result the herbivorous animals need a longer digestive track to digest their foods completely.A longer intestine would also host many small bacteria that process and break down cellulose into glucose, a source of energy which the host herbivore can use. Without the long intestines, animals such as cows could still eat grass, but would not be able to use the glucose stored in the grass structure. To digest cellulose..... |
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| 66064. |
What prevent back flow of blood inside the heart during contraction |
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Answer» Aashu tum khan se ho Wlcm Thanks aashu Semilunar valves prevent back flow of blood inside the heart during contraction by closing ... |
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| 66065. |
Why ..is the amount of hydrogen gas collected double than the amount of oxygen gas ?? |
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Answer» Becoz the water has the ratio of hydrogen and water 2 esto 1 ...Due to its molecule formation ... As water contain 1 molecule of oxygen and 2 of hydrogen |
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| 66066. |
how to find refractive index |
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Answer» Refractive index of that medium =speed of light in vacuum /speed of light in that object Speed of light in air or vacuum / speed of light in given medium |
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| 66067. |
What is the nature of sperm (acidic or basic)? |
| Answer» Is acidic | |
| 66068. |
What is the formula of ester |
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Answer» CH3COOC2H5 CH3CH2COOCH2CH3 CH3COO RCOOR is the general formula of ester ....Hope it helps u ?☺ |
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| 66069. |
Is there any example for hydroelectricity? ?? |
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Answer» Kielder water reservoir is an example of hydroelectricity Is it example Ravi Yes by tidal energy |
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| 66070. |
Experiment for cleansing action of soap |
| Answer» Use dirty cloth and dip in soap water to remove dust | |
| 66071. |
Explain molecular phylogeny in easy terms |
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| 66072. |
Define the blood group system |
| Answer» The blood grouping system plays a very important role during the blood transfusion. If another blood type is introduced into our body, our immune system recognizes it as foreign and attacks it, resulting in a transfusion reaction. Mismatches with the ABO and Rh blood types result in most serious and life-threatening transfusion reactions. Hence, it is advisable to have a blood group checked before the blood transfusion. | |
| 66073. |
IF POWER OF LENS IS 2 DIOPTER THEN FIND ITS FOCAL LENGTH |
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Answer» P=1+f in metre so, ans is 1÷2=0.5 50 cm Focal length should be in cms 0.005cm 0.5 m P=1/F 2=1/FF=1/2 ANS.... |
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| 66074. |
Why water is wet?? |
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Answer» Raunak????? Beacuse it cant be cold Okay first answer me why fire is hot |
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| 66075. |
Carbon have a volatile nature |
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Answer» It have tetravalancy and tendency toform many compounds and catination capacity .so,it have volatile nature because it forms many compounds. |
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| 66076. |
Explain digestion in humans |
| Answer» (i) Mouth (Buccal cavity) The mouth contains teeth, which crushes the food into small particles. Salivary glands present in the mouth secretes saliva which moistens the food.(ii) Stomach Gastric glands are present in the wall of the stomach which releases the following secretions:(a) Hydrochloric acid To make the medium acidic for the action of enzyme pepsin.(b) Mucus To protect the inner lining of the stomach from the action of acid.(c) Pepsin A protein digesting enzyme.(iii) Small intestine It is the site of complete digestion of carbohydrates, proteins and fats. It receives secretions from liver and pancreas.(a) Bile juice It is secreted by liver and performs the following functions :It makes the medium alkaline for the pancreatic enzymes to act and also breaks down large fat globules into smaller globules.(b) Pancreatic juice It is secreted by pancreas. Contains enzymes like amylase for digesting starch, trypsin for digesting proteins and lipase for breaking down emulsified fats.(c) Intestinal juice It is secreted by the walls of small intestine. Contains a number of enzymes such as maltase, lipase etc., for complete digestion. | |
| 66077. |
How many isomers pantane have |
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Answer» Pentane can have 3 possible isomers 3 3 3 |
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| 66078. |
Best sample paper book for science and maths for refrence for boards.. |
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Answer» Thnku sooo much? EAD sample papers are best as I am using them that\'s why I am preferring.. Oswaal for both Only for science Mtg champion |
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| 66079. |
State differences between blood vessels artery, vein & capillaries |
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Answer» Artery ---i) It is a blood vessel having a thick wall.ii) It carries blood from the heart to different parts of the body.iii) On regulatory demand of the body it can dilate or constrict.iv) It doesn\'t contain any valve.v) All arteries carry oxygenated blood except pulmonary artery.Vein ---i) It is a blood vessel having thin wall.ii) It brings blood from different parts to the heart.iii) It can\'t dilate or constrict under normal condition.iv) It contains valves that allow the blood to flow in one direction towards the heart.v) All veins carry deoxygenated blood except pulmonary vein.Capillary ---i) It a very narrow blood vessel which has very thin walls.ii) It forms a network throughout the body in all living cells connecting arteries to veins.iii) It can dilate or constrict according to the requirement of tissue.iv) It doesn\'t have any valve.v) It contains mixed blood as it connects arteries and veins. Arteries carry oxygenated blood while veins carry deoxygenated blood and capillaries connect arteries and veins? |
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| 66080. |
What do you mean by relay neuron? |
| Answer» Relay neurons are found between sensory input and motor output/response. Relay neurons are found in the brain and spinal cord and allow sensory and motor neurons to communicate. | |
| 66081. |
Explain any three directional movements in plants..... |
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| 66082. |
Write the number of covalent bond present in a molecule of Ethane |
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Answer» 7 7 |
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| 66083. |
Write the number of covalent bonds present in a molecule of Ethane |
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Answer» 7 6 Seven |
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| 66084. |
What is the difference between a Fleming right hand rule and Fleming left hand rule |
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Answer» Fleming left hand measure force while right hand used to measure induced current Flemings right hand rule-Adjust your forefinger, middle finger and thumb of your right hand perpendicular to each other such that your forefinger points in direction of magnetic field, and thumb points in direction of motion then the direction in which the middle finger points will give us the direction of induced current. Flemings left hand rule-Hold your forefinger middle finger and thumb perpendicular to each other such that the forefinger points in direction of magnetic field and middle finger points in direction of current then the direction in which thumb points will give us the direction of force. Take u right hand in which thumb. Middle finger and forefinger perpendicular to each other such that thumb represent induce current. Forefinger =motion.. And middle finger represent magnetic field lines Pagal hai kya nhi banta to chup baith Check in ncert and internet |
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| 66085. |
Deffine rancidity and corrosion? |
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Answer» Corrosion - it is a process in which metal react to with substance present in atmosphere to formed surface compound. Corrosion of iron is called rusting. Rancidity- the process in which food get spoil due to oxidation especially during summer season is called rancidity When a food containing fat is kept outsides for sometime then it gets oxidised and give bad smell it is called rancidity.Corrosion: it is a process in which metals are eaten up gradually by the action of air ,moisture or chemicals on its surfaces.???? Corrosion:\xa0It is the process in which metals are slowly eaten up by the action of air moisture or chemicals. For example rusting is a form of corrosion in which iron is eaten up by the action of air and moisture and a reddish brown coating of iron oxide is formed as shown in the following chemical reaction.2Fe + 3H2O → Fe2O3 + 3H2Rancidity:\xa0When the substance containing oils and fats are exposed to air they get oxidised and become rancid due to which their smell, taste and colour change. This process is known as rancidity. For example when a when butter is kept open for a long time then its smell and taste gets changed. Rancidity- oil and fat containing article when kept for some time in open start giving bad smell and taste . We say that these articles have gone rancid. This phenomenon of reaction of atmospheric oxygen with oil and fat is called rancidity .Corrosion - metal are attacked by atmospheric oxygen , carbon dioxide and moisture and are converted into metal oxide and carbonates this phenomen is called corrosion . In the case of iron corrosion is called rusting. Rancidity is oxidation of fatty and oily food which results in bad smell and taste. Corrosion is the eating up of metal by air moisture or some chemical. Eg. Rusting of iron. Rancidity is a property when oily foods get oxidized and give an unpleasant smell and taste.when metals are exposed to air, moisture or acids to form a layer around them and are tarnished then it is called corrosion. |
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| 66086. |
Why is photosynthesis considered as endothermic reaction ? |
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Answer» Because during photosynthesis sunlight or heat energy is required. Becoz during photosynthesis the heat is absorbed by the leaves ..... |
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| 66087. |
Order of ionisation energy in period 2 |
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| 66088. |
Give reason for-urethra forms a common passage for both sperm and urine. |
| Answer» See in male reproductive system in your book.. | |
| 66089. |
Explain the use of condoms |
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Answer» It act as barrier Mai explain nahi karoonga but 1point type jarror kar doonga----_-– it inhibits the insemination of sperms... |
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| 66090. |
How are fats digested in our bodies ? Where does this process take place??? |
| Answer» Fats are digested in the small intestine with the help of bile secreted by liver which breaks large fat globules into smaller one..... | |
| 66091. |
How we can study chemistry please suggest me friends |
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Answer» Read with great concentration and make rough notes also.and then teach all the topics you have read as a teacher in your room.and revise continuously every topic after every weak. Chemisty is a interesting sub. infact, i think science is intresting as compare to other sub. Hold your book . Take deep. breath and start ...... |
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| 66092. |
How brain is protected from shock and injury |
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Answer» By C. S. Which is a shock absorbing fluid. It was protected by cere bro spinal fluid which is present between the menengines |
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| 66093. |
What are the general properties of acjd an base |
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Answer» Additional information- Litmus paper is prepared by Rossella. Acid-it acts as an dehydrating agent. It turns the blue litmus into red. Base- it does not act as a dehydrating agent. It turns the red litmus into blue. |
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| 66094. |
How to prepare practical |
| Answer» By going to cbse practical book and not any other | |
| 66095. |
What is carbide? |
| Answer» Compound composed of carbon is called carbide. | |
| 66096. |
What is space ? |
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Answer» A khatam place space is a which is use for blank place A large and area which can\'t be measured is called space OR the area which surrounds planets and stars. An empty place |
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| 66097. |
Why does atomic radius increase on moving down a group?? |
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Answer» As we go across a Period, a row, of the Periodic Table, from left to right as we FACE the Table, we add another positive charge (a proton, a fundamental, positively charged nuclear particle) to the nucleus. This results in a DECREASE in atomic radii across the Period, due to the increased nuclear charge which draws in the valence electrons.On the other hand, going down a Group, we go to another so-called shell of electrons, that build on the preceding shell. Atomic radii thus INCREASE down the Group. This contest between nuclear charge, i.e. On moving down a group, a new shell is being add to the atom which results in increased radius . Because on moving down the group, a new shell gets added to the atom which increases it\'s radii. |
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| 66098. |
What is 8ntermal fertilisation? |
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Answer» In sexual reproduction, the male inserts the sperms into the female reproductive tract to fuse with the egg. If the fusion takes place within the female parent, it is called internal fertilization. In humans, most of the animals like cats, lions, pigs, dogs, hens, etc., the fusion of gametes takes place internally. In this type, a zygote is formed within the mother and gets its nourishment from her. A fertilisation that takes place inside the body of a parent is called internal fertilisation. Sorry it is internal fertilisation |
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| 66099. |
What is spectrum of light |
| Answer» When white light comes out of the prism, light is spread in a fan shaped beam. This fan shaped beam is termed as a spectrum. Light is said to be dispersed into a spectrum consisting of violet, indigo, blue, green, yellow, orange and red. | |
| 66100. |
What is peristalis |
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Answer» \tPeristalsis refers to the involuntary contraction and relaxation of the muscles of the digestive tract to move the food through the digestive system. The creation of wave-like muscle contractions pushes the food easily to the different processing stations in the digestive tract.\tThe process of peristalsis begins in the esophagus when a bolus of food is swallowed. The strong wave-like motions of the smooth muscle in the esophagus carry the food to the stomach, where it is churned into a liquid mixture called chyme.\tThe process of peristalsis then continues in the small intestine where it mixes and shifts the chyme back and forth, allowing the nutrients to be absorbed into the bloodstream through the small intestine walls. The rythemic movement, i.e. contraction and expansion of the oesophagus in alimentary canal is known as the peristalsis movement. |
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