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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.
| 45401. |
Differentiate between phylogeny and molecular phylogeny.......... |
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Answer» Puja ji it is out of syllabus Koi to answer do..... |
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| 45402. |
After galvanization why metal do not corrode even when zinc coating damages? |
| Answer» Zinc is more reactive than iron, and loses electrons more easily.\xa0The outer layer of zinc of any galvanized material, reacts with the atmospheric oxygen to form Zinc Oxide (ZnO), which is stronger than Zinc. Thus, even if the outer layer of zinc undergoes corrosion, the material is getting coated with a stronger substance (ZnO), and thus is better able to resist corrosion. | |
| 45403. |
which are important intext activities from ncert science class 10 |
| Answer» electro magnetic inductionbio..... Respiration...sunlight is necessary for photodynthsis....there r many its better u refer PRACTICAL SCIENCE TEXTBOOK... read D VIVA Q frm there....and frm chem reactions of AgCl n all those frm chp 1 given in Schand n also esterification n saponification are important....phy prepare glass slab n glass prism activitybio.... read d procedures n precautions CAREFULLY...HOPE IT HELPS U TO EXCEL IN UR EXAMS.... | |
| 45404. |
A proton beam is moving along the direction of magnetic field. What force is acting on proton beam. |
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| 45405. |
Differentiate between hydroelectricity and biomass |
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Answer» Biomass and hydroelectricity are different in many aspects. Hydroelectricity is generated using the kinetic energy from moving water, while the energy from biomass is generated by decomposition of farm waste. Since biomass is composed of organic compounds so energy from biomass results in air pollution. Hydroelectricity, on the other hand, is pollution free. biomass energy derived frm remains of living organisms such as dried leaves dead n decay matter...2... can be installed everwhereHydroelectricity... produced by potential energy of water at a height...2...cannot be installed everywhere it can be installed near dams rivers......similarity both r renewable...... |
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| 45406. |
What is the basic difference between mitosis and meiosis |
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Answer» \tMitosisMeiosisMitosis is the M-phase of the cell cycle. Mitosis results in the formation of two daughter cells identical to each other and also to the parent cell. Mitosis is also called as equational division as both the parent and the daughter cells have equal number of chromosomes. Mitosis involves four nuclear divisions namely, Prophase, Metaphase, Anaphase and Telophase.Meiosis is reductional phase of cell division. It involves the division of a diploid parent cell to give rise to haploid cells with single set of chromosomes. During fertilization, haploid cells fuse to restore the chromosome number in the offspring. Hence, meiosis maintains constant number of chromosomes of particular species.\t Mitosis.... results in 2 daughter cells...diploid daughter cellsMeiosis....results in 4daughter cells....haploid daughter cells..... |
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| 45407. |
Textual activity |
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| 45408. |
5 advantages of nuclear energy? |
| Answer» Advantages of Nuclear Energy :1) Nuclear reactions release a million times more energy, as compared to hydro or wind energy. Hence, a large amount of electricity can be generated.2) The biggest advantage of nuclear energy is that it does not generate any greenhouse gases (carbon dioxide , ozone , methane etc.)3) Nuclear reactor uses uranium as fuel and we have high reserves of uranium in earth.4) Nuclear fuel does not produce pollutant gases like carbon dioxide so it contribute to the greenhouse effect. It also does not produce Sulphur Dioxide so it does not cause acid rain.5) Once the nuclear fuel like uranium 235 is loaded into the reactor, the nuclear power plant can go on producing electricity for 2 to 3 years or for a long span of time at a stretch. There is no need for putting in nuclear fuel again and again. | |
| 45409. |
Which part of human brain maintains posture and equilibrium of body |
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Answer» Cerebellum Cerebellum Cerebellum |
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| 45410. |
Name the basic functional unit of human kidney |
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Answer» Nephron is the basic functional unit of human kidney.... The functional unit of the kidneys is called the nephron. Please clearly bata do in about 1 sentence Pakka Nephron |
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| 45411. |
Position of hydrogen,position of isotopes,cause of periodicity.explain |
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| 45412. |
What is differences b/w genotype nd phenotype??? Briefly |
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Answer» Phenotype is a morphological expression of a single character. For example, Tallness. Phenotype can be observed just by seeing the plant and can be compared with other plant.\xa0Genotype is the genetic make-up of a cell, an organism, or an individual (i.e. the specific allele make-up of the individual), usually with reference to a specific characteristic under consideration. Alleles combine to make a genotype, such as TT or Tt or tt. Genotype cannot be observed morphologically. It should be genetically determined. genotypes means genetic characterics...whereas phenotype means D physical apperance like tall dwarf... |
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| 45413. |
Why is management of forest and wildlife resources is a very challenging task? |
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| 45414. |
Explain phototropism, geotropism, chemotropisn in plants. |
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Answer» Phototropism - It is the movement of the plants shoot part towads the direction of the sunlight. Geotropism - it is the movement of the root parts towards the direction of the Earth deep inside.Chemotropism- movent of pollen grain towards the ovule in flowering plants ...... Growth movement of plants towards light(sunlight)-phototropismMovement towards earth of roots is geotropismGrowth movement to water and minerals - chemotropism |
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| 45415. |
The part of flower which contain satamen |
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Answer» Stamens: They are the male reproductive parts. Stamens consist of two parts – anther and filament. Anther is a swollen part of the stamen. The filament is a long, slender stalk which attaches the stamen to the flower. Pollen grains are formed inside the anther which produces the male gametes.Flowers which contain both the stamens and the pistil are known as bisexual flowers. For example- Rose, Hibiscus, Gulmohar, Mustard etc.Uni-sexual flowers: The flowers which contain either the stamens or the pistil are known as unisexual flowers. For example- Maize, Papaya, Cucumber etc. Male part of flower which produce male. Gametes called pollen grain. |
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| 45416. |
What is the difference between base and alkali |
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Answer» \tBaseAlkaliBases do not dissolve in waterBases that dissolve in water are alkaliAll bases are not alkaliAll alkali are basesIt neutralises acidsIt releases OH- ions, accepts protonExample: Zinc hydroxide , copper oxideExample: potassium hydroxide, sodium hydroxide\t In addition to the answer ... Alkali are those Bases which disolve in water All alkali are bases but al bases are not alkalis |
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| 45417. |
Draw the structure of compound ACETYLENE and name the functional group present in this |
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Answer» Ise me functional group alkyne ka hai It is ethyne,formula C2H2. |
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| 45418. |
How to find least count of an ammeter and voltmeter? |
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Answer» But question is about the topic of volt&ammeter To get the least count of the "main scale" , count the number of divisions on the main scale in one cm of it. Divide 1 cm into that much number of divisions; the value obtained is the least count of the main scale in cm.? |
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| 45419. |
What is the role of fossil in deciding evolutionary relationship |
| Answer» It helps us by giving information about extinct species and gives info about the time period in which they lived.It gives us information about how the new organisms have evolved from earlier ones..........For eg.The fossil of archaeopteryx have shown the link between reptiles and aves................ | |
| 45420. |
What is evluetion |
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Answer» Evolution is the sequence of gradual changes which takes place in the primitive organisms over millions of years in which new species are produced Kya ap evolution keh re ho??? |
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| 45421. |
What is the need for menstruation in human beings |
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| 45422. |
Write five chemical properties of metals |
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Answer» Properties of metals: 1. Melleable 2. Ductile 3. Sonorous 4. Lustre 5. Conductivity Textbook kholne ka kasht krte ho kabhi |
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| 45423. |
Why a current carrying conductor placed in a magnetic field experiences a force? |
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| 45424. |
Does electric current moves from +ve to -ve charge or from -ve to +ve charge |
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Answer» as electrons flow against the direction of electric current so both are correct +ve to -ve |
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| 45425. |
difference between 24carat gold and 22 carat gold |
| Answer» 24 carat gold is pure gold and 22 carat gold is mixture with some other alloys | |
| 45426. |
Why light is called transverse wave |
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| 45427. |
Who is the father of modern periodic table |
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Answer» Ek Henry Mosley batata haito ek mendeleev Batata hai,, to correct kya hai Henry moosley Mendeleev |
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| 45428. |
What is the name of milk in science? |
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Answer» Calcium Hydroxide Magnesiun hydroxide |
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| 45429. |
Mno2 +hcl=Mncl2+cl2+h2o which substance get oxidised and reduced |
| Answer» Hydrogen is oxidized and mno2 is reduced. | |
| 45430. |
Describe the Nomenclature of carbon compound? |
| Answer» hmmm i dont know describe me | |
| 45431. |
Difference between absolute refractive index &refractive index |
| Answer» Refrective index in wich air is involved or light rays goes from air to another medium is known as absolute refractive index and refrective index in which light rays moves from one medium to another medium without the involvement of air is known as relative refractive index | |
| 45432. |
Explain kreb cycle |
| Answer» Kreb cycle occurs in mitochondrial matrx and generates a pool of chemical energy frm the oxidation of pyruvate, end product of glycolysis | |
| 45433. |
Function of hormones and its related gland |
| Answer» Thyroxin - metabolism of fatsInsulin -regulate sugar level Parathyroid - regulate calcium and phosphate level Adrenaline - prepare body for emergency | |
| 45434. |
Group 13 ka hallide |
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| 45435. |
When voltage is increased does the slope of the resistance differ whole plotting a V-I graph |
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Answer» No My doubt us weather the slope which is a straight line passkng through the origin bends from the previous position If you increase the voltage the current also increases but the ratio will be constant which is resistance and graph of VI graph is straight line which shows constant ratio. |
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| 45436. |
what is thermal power and hydro power plant |
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| 45437. |
Draw backes of mendleev periodic table |
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Answer» Right The drawbacks of mendeleev periodic table is ........................1.he does not tell the correct position of hydrogen....2.isotopes were discovered later these posses a challenge to mendleeve periodic table..........3.At some places the atomic mass is not at in increasing order .by this it is impossible to discover how many element are present between them |
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| 45438. |
Properties of covalent compounds |
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Answer» 1) low melting and boiling points and do not conduct electricity2) consists of molecules like H2, O2 etc3) they are mostly gases or liquids likeHCL , H2O etc though some are solids like sugar(C6H12O6)4)they are soluble in organic compounds Low melting and boiling point. Insoluble in water.Cannot conduct electricity. |
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| 45439. |
Write steps involved in photosynthesis |
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Answer» \tAbsorption of Light Energy\tConvertion of Light energy to chemical energy and photolysis of water molecules that is breaking water molecules into hydrogen and oxygen atom.\tReduction of Carbon dioxide into Carbohydrates (Glucose. ) Absorption of light energy by chlorophyllReduction of carbondioxide to carbohydrates Conversion of light energy to chemical energy Splitting up of water molecules into H2 and O2 |
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| 45440. |
What changes can you make in your habits to become more environment friendly |
| Answer» 1. Adopt 3 R stratergy 2. Adopt measures like car pool, switching of lights and fans when not in use etc3. Sustainable development, use of non conventional sources of energy | |
| 45441. |
Short note on digestion |
| Answer» Human Digestive System : A human digestive system is a group of organs working together to convert food into energy and basic nutrients to feed the entire body. The food we take in is digested and utilized by our body and the unused parts of the food are defecated. Human digestive system is the sum of the gastrointestinal tract (GIT; also called alimentary canal) and accessory organs (tongue, liver, pancreas, etc). These two parts together help in digestion in humans.The alimentary canal is the long tube through which the food that we eat is passed. It begins at the mouth (buccal or oral cavity), passes through the pharynx, esophagus or food pipe, stomach, small intestines, large intestines, rectum and finally ends at the ****. The food particles get digested gradually as they travel through various compartments of the alimentary canal. Accessory organs are organs which participate in the digestion process but are not actually a part of GIT. They stimulate the digestion by releasing certain enzymes.Food begins its journey through the digestive system in the mouth, also known as the buccal cavity or the oral cavity. The mouth has many accessory organs such as the tongue, teeth, and salivary glands, which help in the digestion of food. Teeth grind the food into small pieces. Salivary glands secrete saliva which contains an enzyme called the salivary amylase. This enzyme breaks down starch content and moistens the food, before the tongue and other muscles push the food into the pharynx.\xa0Pharynx : The pharynx passes the chewed food from the mouth to the esophagus. The flap of tissue known as the epiglottis present in pharynx prevents food from entering into the wide pipeEsophagus or Food Pipe: The esophagus is a muscular tube connecting the pharynx to the stomach. It carries swallowed masses of chewed food along its length and pushes it down to the stomach.\xa0Stomach: The stomach is a thick-walled muscular bag that is located on the left side of the abdominal cavity. It is the largest part of the human digestive system. Stomach acts as a storage tank for food so that the body has time to digest large meals properly. It receives food from the food pipe at one end and opens into the small intestine at the other end. The inner walls of the stomach consist of the gastric glands which secrete mucous, hydrochloric acid and digestive enzymes. These continue the digestion of food that began in the mouth.Mucous protects the lining of the stomach while acid kills bacteria that enter the body along with the food. Hydrochloric acid also makes the medium in the stomach acidic, which helps the digestive enzymes like pepsin to act. The digestive enzymes break down proteins into simpler substances.Small Intestine: The small intestine is the longest part of the human digestive system. It is a highly coiled long, thin tube which is about 7.5 metres in length. The length of the small intestine depends on the diet of the organism. A major proportion of digestion takes place in the small intestines. All types of nutrients are digested here with the help of secretions which it receives from the liver and the pancreas. The walls of the small intestine also secrete juices for digesting food.The liver releases bile juice which alkalizes the acidic food received from the stomach and also emulsifies the fat content. The pancreatic juice digests the proteins and lipids. Finally, the intestinal secretions convert the carbohydrates into glucose, proteins to amino acids and fats into fatty acids and glycerol.Once the food is broken down into the simple particles, it is ready to be absorbed by the body. The villi, finger-like projections present on the walls of the small intestine, absorb the digested food by increasing the surface area. The absorbed food is then transported to different parts of the body through the blood vessels for cell activities.Large Intestine: The large intestine is a long, thick tube which is about 1.5 meters long. The large intestine absorbs water and small amounts of nutrients from the undigested food with the help of many symbiotic bacteria residing in it. The remaining waste passes into the rectum, where it remains as semi-solid feces. Feces exit the body through the **** via time-to-time excretion. This process is called Digestion.\xa0 | |
| 45442. |
What is contraception??? |
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Answer» In a easy way Birth control is know as contarception.. |
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| 45443. |
Important que of heredity and evolution |
| Answer» 1.Mendel experiment2.dihybrid and monohybrid cross3.*** determination4.acquired and inherited traits5.**how evolution and classification are interlinked to each other6.what are fossils. How age of fossils is determined7.artificial selection8.natural selection,genetic drift,reproductive isolation. | |
| 45444. |
What is Alkyl part of carbon chain |
| Answer» The part of the chain in which a carbon atom bonds with only 3 hydrogen atoms.......its usually on the left n right end of the main chain | |
| 45445. |
How prepare for board exam |
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Answer» Don\'t reading do enjoy Perseverance for success along with believe in yourself which would motivate you to do the best. Hard study |
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| 45446. |
How many of you learn periodic table???? |
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Answer» Till 20 elements Me partially |
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| 45447. |
Define food chain and food web briefly |
| Answer» Food chain : A food chain describes the feeding relationships of different organisms in a linear fashion. This is the simplest way of showing feeding relationships.Maize → Locust\xa0→ Lizard → SnakeFood web : A food web shows multiple food chains, multiple relationships and connections. This a more complicated but more realistic way of showing feeding relationships, as most organisms consume more than one species and are consumed by more than one species. | |
| 45448. |
Descrbe illustration According to heredity and evolution chapter |
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| 45449. |
What is the benefit of additional subject in our percentage ? |
| Answer» It increase our percentage but when anyone fail in additional subject there is no effect on percentage | |
| 45450. |
Explain evolution Frm biology chapter heredityand evolution |
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Answer» It is a process by which different kinds of living organism are believe to have developed from earlier forms during the history of the earth Evolution is the squence of gradual changes which take place in the primitive organisms over millions of years in which new species are produced. |
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