Saved Bookmarks
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.
| 65951. |
Name the type of mirror used in headlights of a car |
|
Answer» Concave mirror is right not convex mirror ? Convex mirror Convex mirror Concave mirror |
|
| 65952. |
Name one bio-catalyst. |
| Answer» Pepsin. Actually we can put any enzyme that helps in the digestion process. | |
| 65953. |
Which is the internal energy reserve in plants ? Do animals have same energy reserve |
|
Answer» The internal energy reserve in plants is starch while animals have glycogen as internal energy reserve.Justification: Glycogen is much more highly branched structure than glucose. Glycogen has shorter strands as compared to starch so it can be metabolized very quickly to provide energy to the body. Plants have a much lower metabolic rate than animals and also they don\'t require sudden bursts of energy. So, plants store glucose in the form of starch as compared to animals where glycogen is the storage form of carbohydrates I am not sure but as far as i know internal energy reserve in plant is tha form of starch and in animals in the form of glycogen. |
|
| 65954. |
Is burning a candle physical or chemical change |
|
Answer» Chemical change......... Chemical change But how it is both please give explanation Both |
|
| 65955. |
Evidence of evolution |
|
Answer» Fossils: They are the remains of the non-degraded parts of living beings found within rocks. The layer from which the fossil is recovered decides the age of the fossil. The fossils found deeper down are older compared to the ones found in the upper layers. They give an idea of the condition of the earth in that specific era. The study of fossils is called palaeontology. Thus, fossils are called paleontological evidence.Comparative Anatomy: It explains how many organisms had the same ancestor and how many different organisms evolved as a result of natural selection or genetic drift. According to the natural conditions, two types of comparative anatomy were observed, namely homologous organs and analogous organs.Embryo Development : The embryos of various species show similar structure till a certain period of gestation. For example, the embryos of humans, pigs, reptiles, and birds show similar embryos. They develop into the respective species as they grow. This again shows common ancestry. Fossil |
|
| 65956. |
What is the difference between ionic compounds and covalent compounds? |
|
Answer» \tIonic bondsCovalent bonds\xa0Ionic bond is formed by the transfer of electrons from one atom to another atom. It is also known as electrovalent bond.Covalent bond is formed by the sharing of valence electrons between atoms of similar electronegativityOccurs between a metal and a non-metalOccurs between two non-metals.Ionic bonds do not have definite shapeCovalent bonds have definite shapeThey exists in solid state at room temperatureThey exist in liquid or gaseous state\xa0at room temperatureThey have high boiling and melting pointsThey have low boiling and melting points.\t Ionic compound means electrons change from one to another .covalent means sharing Hello,Maneet Singh this side. Well I teach Maths and science to 10th and maths and economics to 11th. In case if any doubts you can ask from me or you can also share your no. So that i can share most important questions and can clear your dounts.Thanks and RegardsMANEET SINGH |
|
| 65957. |
Name the nutrient that is absorb in small intestine and reabsorb in kidney? |
|
Answer» Glucose Glucose Glucose |
|
| 65958. |
Who search the gravity ? |
|
Answer» ISAAC NEWTON Isaac newton How you know? Newton |
|
| 65959. |
You can think the time machine and time travel is possible or not ? |
|
Answer» Agr time machine hota to main aage ja ke final exam ka quastion paper la ke padh leta pura book padhne ke jarurt he nii prte?? I\'m agreed with chetna, agar yahan hota to mujhe itni dant ni padti hamesha???? Time machine toh abhi tak Doreamon mein he possible ho paya hai?? |
|
| 65960. |
What is the faster then the speed of light. |
|
Answer» Hamara mn Nothing is faster than light perhapsI had heard about discovery of tachyon particles by SG Subrahmanyam. which travels faster than light. I m not sure about that Sound |
|
| 65961. |
Why are stomata absent in root |
|
Answer» Because no photosynthesis takes place in roots. Stomata are tiny pores that are found on the epidermis of leaves, stem and some fruits . Stomata are present on aerial parts of plant for transpiration to occur. Roots are present in soil which would block them.\xa0Stomata on the upper surface prevent excessive loss of water due to transpiration as this surface is directly exposed to sunlight. In aquatic plants stomata are either absent or non-functional. Stomata are absent in roots because roots are under the ground and no transfer of air takes place there.and sunlight can\'t reach there. |
|
| 65962. |
Major events that takes place in clotting of blood?? |
| Answer» Platelets get accumulated in the area of cut. | |
| 65963. |
Write 2 applications of bio gas |
|
Answer» Thanks pandey bro Hi☺️Pooja Hii chetna 1.It is used as a fuel. And. 2. It is used for genrating electriciry |
|
| 65964. |
Mendle took tall tea plant and short tea plant produce pregeny through cross fertilizer |
| Answer» | |
| 65965. |
What will happen to the rate of photosynthesis in no rainfall area ??? |
|
Answer» Thanks yogita No rainfall in the area means that there is no water and according to the definition of photosynthesis it is the process by which green plants make their own food using water, sunlight and nutrients. So the rate of photosynthesis will decrease. |
|
| 65966. |
Nervous system kitne types ke hote h |
| Answer» 2 type | |
| 65967. |
What is dam? Why do we need it? |
| Answer» Dam is nothing but a large water reserve/barrier. It is used to make electricity, prevent flood and many more. | |
| 65968. |
How Buckminsterfullerene is converted into semiconductor |
|
Answer» Not from examination point of view but good question Koi help kar do |
|
| 65969. |
How is nuclear energy produced in a nuclear power plant ? |
|
Answer» By nuclear fission and fussion???apologies for mistake By nuclear fission. |
|
| 65970. |
What function is performed by human arms,forelimbs of dog and forelimbs of whale |
| Answer» | |
| 65971. |
Reflected index of convex mirror |
| Answer» | |
| 65972. |
What is the function of bile juice? |
|
Answer» (A) it helps to break down the large globules of fats into smaller globules , thereby increasing the efficiency of enzyme action (B) bile salts make the acidic food comming from stomach to alkaline which is necessay for the action of pancreatic enzymes 1. It nutrilises the acidity of the food.2. It makes medium alkaline for the action of enzymes of pancreatic and intestinal juice.3. It breaks the fats present in the food into small globules , making it easy for the enzymes to act and digest them. Emulsification of fat molecules |
|
| 65973. |
Write the conditions necessary for corrosion |
|
Answer» The necessary condition for corrosion is the presence of air,water and moisture. The conditions necessary for corrosion is moisture air etc. Air ,water and moisture.? |
|
| 65974. |
Reactivity |
| Answer» | |
| 65975. |
how is involuntary action and reflex action different fy each other |
|
Answer» Durga se Involuntary actions acts without the will of the animals like pumping of blood from heart but reflex actions acts in response to an external stimulus acting on the body like withdrawl of hand after touching something hot. ? |
|
| 65976. |
Name two excretory products in plants other than oxygen and carbon dioxide |
| Answer» Resins and gums...... | |
| 65977. |
What bring about control and coordination in plants? |
| Answer» Chemical reaction .i.e . Hormones in plants | |
| 65978. |
What is post fertilisatiin |
| Answer» After fertilization, a series of event occurs in the zygote to develop into a seed. | |
| 65979. |
Name putrefying bacteris |
| Answer» Bacteria and fungi those bacteria which act as a decomposer is called puterfying bacteria | |
| 65980. |
What is ampoteric oxide |
|
Answer» The metal which behave like acid base both The metal oxides which behave the property of both acids and base are called as amphoteric oxide..............☺ |
|
| 65981. |
state the method used for growing rose plant and jasmine plant.?? |
|
Answer» Cutting By vegetative prpopagation (cutfing method) |
|
| 65982. |
why DNA copying is necessary during respiration???? |
| Answer» DNA copying is necessary during reproduction as dna carries genetic information and for an organism to produce its own kind off springs its necessary to copy dna. | |
| 65983. |
In this advanced age do you think the wild life is worth to preserve in itspresent form |
| Answer» | |
| 65984. |
If you find coliform bacteria in a sample of potable water what does it mean explain |
| Answer» It means that the water is polluted and the level of pollution is decided by the amount of coliform present in the water | |
| 65985. |
When did the concept of biosphere reserve evolve is it advantages in the present content |
| Answer» | |
| 65986. |
CH3 - CH2- Br |
| Answer» Bromo ethane, or ethyl bromide☺☺☺☺ | |
| 65987. |
Name a non reactive metal that donot found in air |
| Answer» | |
| 65988. |
Combination of lenses n its power equal to zero |
| Answer» | |
| 65989. |
What are the limitation in harnessing nuclear energy? |
| Answer» 1. The number one problem of nuclear power is the radioactive waste. The waste from nuclear energy is extremely dangerous and it has to be carefully looked after for several thousand years. There are not really any solutions to this problem, except for nuclear waste treatment.2. It is a high risk power supply. Of course a nuclear power plant has a very high security standard, but it is impossible to build a plant with a 100% security. Horrible consequences will be there if an error or accident occurs in this plant.3. The time frame needed for formalities, planning and building of a new nuclear power generation plant is in the range of 20 to 30 years in the western democracies. In other words: It is an illusion to build new nuclear power plants in a short time. | |
| 65990. |
Explain Heredity and evolution |
| Answer» Heredity is the transmission of characters from parents to offspring and evolution is a slow and gradual change which gave rise to new species | |
| 65991. |
What do you mean by overlapping and croosing each other |
|
Answer» Overlapping Social Differences\tOverlapping differences happen when some social differences overlap other differences.\tIt becomes a social division when some social differences are joined by another set of social differences. For example, the difference in the Blacks and the Whites in America is due to their different race which is a social difference.\tIt becomes a social division when, say, the income factor is also added in that. The Blacks tend to be poor and homeless, while the Whites tend to be rich and educated. This creates a division in the people, making them feel that they belong to different communities.\tIn our country, Dalits tend to be poor and landless. They often face discrimination and injustice. Situations of this kind produce social divisionCross-cutting Social Differences\tCross-cutting differences happen when one type of social difference is weakened by another set of social differences. Then, it becomes difficult to group people into a single category because they are going to have different opinions and views on different matters.\tOn some matters, there might be agreement on a particular issue, but there might be disagreement on another issue. For example, people in the Netherlands are predominantly Christian, but divided between Catholics and Protestants. Here class and religion cross-cut each other. Catholics and Protestants are about equally likely to be poor or rich and they do not have conflict between them. In Overlapping, one kind of social difference becomes more important than other... Whereas in crosscutting social differences are created which are easier to accommodate. |
|
| 65992. |
What is light and what is physics |
|
Answer» Light is the source of energy pass one medium to another medium. Light is the source of energy. Physics is a branch of science |
|
| 65993. |
Why respiration called exothermic reaction |
| Answer» Respiration is considered as an exothermic reaction because in respiration oxidation of glucose takes place which produces large amount of heat energy. This is shown in following chemical equation. | |
| 65994. |
How can you conclud that birds have evolved from reptiles ? Explain giving suitable example |
|
Answer» Birds are closely related to dinosaurs, even dinosaurs are also related to the reptiles.This has been proved by the modern scientists......and some people also think that birds are the dinosaurs.........but scientists proved that they are closely related to each other..??for example the function of feathers initially was to provide insulation to the dinosaurs only some of them use tjeir feathers for flight, but birds seem have to adapted their feathers for flight purpose..........hope it will help you ?????☺☺ Through fossil evidence Thanks 2 both Am i right raunak? For example dinosaurs had feather and birds also have now but dinasours used them for protection from cold and birds used them for flying...so we can conclude that birds have evolved from dinasours Example ? We will conclude it by paleontology, by properly studying about their fossils and teaching their phylogenetic relationships |
|
| 65995. |
How to find the e.c of the elements of atomic no. 19 and above |
|
Answer» How to find the e.c of the element with atomic no. 35 Atoms have many cells in them such as case l l shell M shell the value of k shell is 2 and the value l shell is8 and valu of m shell is 18 so the electropnic configration is 2 8 8 1 Will study in class 11 By following spdf ruleIt is in the sequence-SS PS PS DPS DPS FDPS FDPSlearn this sequence and ask ur teacher he will explain it Please answer this qstn... |
|
| 65996. |
What is fertilisations process? |
|
Answer» The process of fusion of male gamete with the female gamete to form a zygote is known as fertilisation. The process of fusion of male and female gamet is known as fertilization Fusion of male and female gamete to form zygote is called fertilisation |
|
| 65997. |
Best refresher and guide for science. |
|
Answer» Ohk Only ncert bcoz in board exams all comes within ncert But 1 ncert Aare bhai sabse best book ncert ka hi hai usko 5-6 thik se padho 70+ milega 80 se Ulike or all in one Evergreen and s chand publication one of the best guide for science |
|
| 65998. |
Frnds apko pta hai kya ki NTSE exam ka result kab declare hoga |
|
Answer» Noo February or March Plz answer me |
|
| 65999. |
How can you put out chemical reaction from saturated and unsaturated hydrocarbons? |
| Answer» Unsaturated hydrocarbons can be converted into saturated ones by the addition of hydrogen in the presence of nickel as a catalyst.Unsaturated hydrocarbons are more reactive due to presence of double or triple bonds. They undergo addition reactions across the carbon-carbon double bonds to produce saturated hydrocarbons.Addition of hydrogen across C-C double bonds is called hydrogenation. Unsaturated hydrocarbons add hydrogen in the presence of catalysts such as nickel/palladium to give saturated hydrocarbons. | |
| 66000. |
Why we see wateron road during summer |
| Answer» We sprinkle water on the roof or open ground in hot summers. This water requires latent heat of vaporisation to change from liquid state to vapor state. It evaporates or vaporises by taking the large amount of latent heat from the roof or ground and surrounding air. Hence, the roof or ground becomes cool after losing its heat to water. | |