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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.
| 58451. |
Explain nuclear fission and fussion |
| Answer» 1.Nuclear fusion: combination of 2 nucleus to form big heavy nucleus. 2.Nuclear fission: splitting of a big nucleus into small nuclei. | |
| 58452. |
Explain the importanceof fossils in deciding evolutionary relationship. |
| Answer» 1.fossils and their study is useful in knowing about the species which are no longer living.2.they provide evidence and missing link b/w 2 classes3.braod historical sequence of biological evolution can build up.4.phylogency of man,horse and elephant has been worked out.5. Habits and behaviour of extinct species can be inferred.6. Fossils provide convincing proof of organic evolution | |
| 58453. |
What is alkaline?? |
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Answer» The substance in which water is added An Alkaline can be defined as a base that dissolves in water. The bases which are soluble in water are called alkaline. For example, sodium hydroxide (NaOH), potassium hydroxide (KOH)...HOPE IT HELPS??? Have u written the correct spelling Plz give me abswer |
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| 58454. |
BHA full form |
| Answer» Butylated hydroxy anisole | |
| 58455. |
Define Resistivity in short term |
| Answer» Resistivity is the resistance of a wire of unit length and unit area. It\'s unit is ohm-m. It does not depend on length and area. It depends only on material and temperature. | |
| 58456. |
What is hetrotrophic nutrition |
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Answer» In this mode of nutrition , all the organisms get their food prepared by autotrophs or from organic matters This is the mode of nutrition in organisms are depended on others for food |
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| 58457. |
The radius of curvature of a spherical mirror is 20 cm what is the focal length |
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Answer» 10cm C=2f20/2=fF=10 |
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| 58458. |
Why formation of food chain and food web takes place |
| Answer» For the transfer of energy | |
| 58459. |
Explain how the reaction of hydrogen with steam resulted as Fe4O3 ? Why not Fe2O3? |
| Answer» Please koi iska answer kr doo yaar | |
| 58460. |
When the earth shook |
| Answer» When earthquake occurs | |
| 58461. |
important chapters of science for board exams |
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Answer» Ch 2,3,5,7,8,9,12,13,16, Send me More chapters of science Life process and humaneye |
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| 58462. |
Discribe varius part of glucose break down in orgains |
| Answer» Glucose is first divided into pyruvate in cytoplasm. This step is same in all organisms. This step is known as Glycolysis and some amount of energy is also released during this step. Further breakdown of pyruvate takes place in the following ways:1. In Yeast: In the absence of oxygen, pyruvate is broken down into etanol,carbon dioxide and some amount of energy is also released .2. In Muscle cells: Due to lack of oxygen , pyruvate is broken down into lactic acid and some amount of energy is also released. 3. In most of aerobic organisms: In the presence of oxygen, pyruvate is broken down into carbon dioxide , water and large amount of energy is also released. This aerobic respiration takes place in the mitochondria of cells and is called Krebs cycle. | |
| 58463. |
What is peptic ucler? |
| Answer» Peptic ulcers are open sores which get developed on the stomachs inside lining and the upper portion of small intestine. Stomach pain is the most common symptom of a peptic ulcer. | |
| 58464. |
How can you experimentaly distinguish between carboxylic acid and alcohol |
| Answer» Carboxalic acid will turn blue litmus red but there will be no change in the litmus paper in case of alcohol ## | |
| 58465. |
How detergent clean the clothes...??? |
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Answer» detergents have a stronger cleaning capacity Aree vhi h jo soap ka h bas ye hard water mei bhi bina scum bnaye clean kar deta h |
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| 58466. |
define working of human eyes |
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Answer» Pls tell me the ans of table 2.1 ch2 When we look towards an object ,light from the object enters the pupil of eye and falls on eye lens forms a real and inverted image on retina of eye .the retina of eye contains special cells in shape of rods and vones .these cells convert light energy into electric signals .these signals carried to brain through optic nerve .the brain interpets the signal and hence we see the object. |
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| 58467. |
Ok..my friends..and thanks for answering...all the best for preparation ✌ |
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| 58468. |
define principal DC generator |
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Answer» An electrical Generator is a machine which converts mechanical energy (or power) into electrical energy (or power).Principle : It is based on the principle of production of dynamically (or motionally) induced e.m.f (Electromotive Force). Whenever a conductor cuts magnetic flux, dynamically induced e.m.f. is produced in it according to Faraday\'s Laws of Electromagnetic Induction. This e.m.f. causes a current to flow if the conductor circuit is closed. It is based up on the principal of the electromangetic induction, when a coil rotates between the 2 poles of a strong magnet a current is induced in the coil... |
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| 58469. |
Fresh milk has ph of 6 how do you think the ph will change as it turns into curd |
| Answer» Yes the pH will change the because of the formation of the latic acid and formation of curd takes place..... | |
| 58470. |
What is the name of ch2=ch2+h2 |
| Answer» Ethene | |
| 58471. |
What is use of etanoic acid |
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Answer» \tEthanoic acid commonly known as acetic acid belongs to a group of carboxylic acids.\tVinegar used in our day to day life is a 5-8% solution of acetic acid in water. It is extensively used as a preservative in pickles. CH3CooH *used in vinegar.... * in food preservatives... *used in making of esters which are used in perfumes..... |
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| 58472. |
Last question..please photo chemical reaction ka ek easy sa...eq... jo yaad hojae |
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Answer» How much weightage does the numericals carry?? Needless?? Thanx? 2AgBr--------> 2Ag + Br2 |
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| 58473. |
Metal which can easily cut with knife... |
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Answer» Sodium and pottasium *pottasium Sodium, potting |
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| 58474. |
Write the function of following oarts in human female reproductive system 1.ovary2.oviduct3.uterus |
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Answer» Ovary~it mainly perform two functions 1..the production of ova 2.secretion of female *** hormone.2.oviduct~its main function is to transport the egg from ovary to uterus.3.uterus~if ova is fertilized by male sperm then it is catches by uterus and nourishes it 1. Ovary produce ovum or egg that is fertlized by male gamete in reproduction2. Oviduct is a tube or connection that connects uterus to ovary and is a passage through which ovum enters into uterus for fertilization3. In uterus the male and female gamete are released and thus fertilization occur |
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| 58475. |
Hydrogen is not a metal but it has been assigned a place in the reactivity series of metal |
| Answer» Becoz it has the capability to lose, its one electron to reach the stable position...... just like metals....... | |
| 58476. |
How do you increase or decrease the pH of pure water? |
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Answer» Water me...acid or base ko...mix krke...apn decrease or increase kr skte hai...ph By adding acid or base in it By adding acidic solution to it we can decrease its ph and by adding basic solution to it we can increase its ph...... |
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| 58477. |
What do you mean by denatured alcohol |
| Answer» Denatured alcohol is ethyl alcohol which has been made unfit for drinking purposes by adding small amounts of poisonous substances like methanol,pyridine,etc | |
| 58478. |
2019 board paper |
| Answer» I will give u on 13 march | |
| 58479. |
KBr + BaCl2 ------- |
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Answer» Can you give me the sure answer• KCl2 + BaBr OR•KCl + BaBr2 KCl + BaBr2 kbr+BaCl2=kcl2 +BaBr...☺☺☺☺ KCl2 + BaBr ......99% sure? Kcl2 + BaBr .... I think? Kcl2 +Babr |
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| 58480. |
what is hymen??? |
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Answer» Hymen is not in our syllabus ...nd i think u know about it Search it on Google |
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| 58481. |
Dobereiner\'s classification |
| Answer» Dobereiners classified elements on the basis of atomic mass and chemical properties of element. Acc to him if elements are arrange into triads or increasing order of their atomic mass in the form of 3 elements, have similiar chemical properties are obtained . The atomic mass of middle most element being equal to the arithematic mean of the atomic mass of two elements | |
| 58482. |
How can speciation be prevented? |
| Answer» | |
| 58483. |
example for kharif crops and rabi crops |
| Answer» Kharif crop --> RiceRabi crop--> wheat | |
| 58484. |
What are different forms of energy |
| Answer» 1. Wind energy 2. Geo thermal energy 3. Ocean thermal energy 4. Tidal energy 5. Solar energy...... | |
| 58485. |
Name the largest artery |
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Answer» Aorta Aorta is the largest artery Aorta |
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| 58486. |
Write electrone dot structure of 2bromo-pentane and 2 methyle -propane and 1 hexyne. |
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Answer» *Currently Thnx for the help bro but crrently i have no doubt I will try to help you I dont have idea about this ok if you have any other questions then ask You can do in copy and send pic |
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| 58487. |
What are the ways by which speciation takes place ? |
| Answer» Natural selection , genetic drift,and geographical isolation........ | |
| 58488. |
State the principal of electric motor and electric generator. |
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Answer» Both electric generator and motor works on the principle of Faraday\'s law of electromagnetic induction ! Motor - force acting on a current carying conductor in magnetic field and generator- whene a coil is rotate in the magnet field it produce induce current thought it Electric motor is bases of on the principle of when the current carrying cunducter is placed in between magnetic field it experience a forceAnd electric generator is work on the principle of electro magnetic induction Electromagnetic induction |
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| 58489. |
Series and parallel combination |
| Answer» In parallel combination the current have two or path to travel in circuitAnd in series combination current have only one path to travel in circuitFor diagram of parallel combination take a look of ncert page number 210 figure 12.7 and for series figure 12.6 | |
| 58490. |
Write four salts which have water of crystalisation what are characteristics of these salts ? |
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Answer» Thnx plz see my next ques ?? Copper sulphate Sodium carbonateCalcium sulphate Copper sulphate hemihydrate or pop , sodium carbonate decahydraye or washin soda Plaster of Paris Zync sulphate crystal\'s i think so |
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| 58491. |
What are the reasons of defect for myopia and hypermetropia ? |
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Answer» It helped me ! Thank you all guys . By the way its a very good way for studies with fun with such unknown freinds ! ? Hypermetrapia is that defct of vision due to which a person can\'t see the nearby object CAUSES...*conversing power become to close to eye*focus comes close to eye *far point closer to eye*ciliary muscles expand *eyeball smallerCORRECTNESScanvexlens power= -3D Myopia is that defect of vision due to which a person can\'t see the distant object clearly... CAUSES...*conversing power of eye went to infinity *focus went to infinity *far point infinity*ciliary muscles shrink*eye ball elongation/largercorrectness =concave lens power =-2d For myopia increase in length of eye ball or decrease in focal length of the eye lens when the eye is fully relaxed.For hypermetropia decrease in length of the eye ball or increase in length of eye lens as if the eye is fully relaxed 1. Eye ball being too short......2. Focal length being too short..... |
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| 58492. |
Differentiate between modern pt and mendleeve pt |
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Answer» Oh But vaise ye book ka hi ques h Ok... Mai google kar leta hu aur ye to bas type of questions dikhane ke liye chhod deta hu?? Ishit ji bohat bada answer hai...yaha kaise type karu....hope u cn understand |
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| 58493. |
How the human being reproduce |
| Answer» By the sexual reproduction | |
| 58494. |
Two examples of STD |
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Answer» AIDS and warts??? HIV-AIDSSyphilis Ganoria |
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| 58495. |
What is the difference between saponofication and esterification reaction |
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Answer» CH3COOH+C2H5OH--->CH3COOC2H5+H2OEster Can you pls type the chemical equation here Sponification is used to form soap and esterification reaction is used to form ester |
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| 58496. |
Who is responsible for *** determination in humans |
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Answer» Male Chromosomes Doberiner Male |
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| 58497. |
1.DEFINE NUTRITION ? 2.WHAT ARE THE TYPES OF NUTRITION ? |
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Answer» Materials like food that we eat to gain energy is called nutrition. Two types of nutrition areAutotrophic nutrition-> organism like plants make their own food by photosynthesis, this type of nutrition is autotrophicHeterotrophic nutrition-> living beings like humans take food material from plants like fruits and vegetables . So taking nutrition from other organism is called heterotrophic nutrition The process of acquiring energy for maintenance is said to be as nutrition. The types of nutrition are :autotrophic and heterotrophic Nutrition is the process of intake of nutrients (like carbohydrates, fats, proteins, minerals, vitamins and water) by an organism as well as the utilization of these nutrients by the organism.Nutrition is of two types namely, autotrophic and heterotrophic mode of nutrition.Plants exhibit autotrophic mode of nutrition. They prepare their own food by the process of photosynthesis.Animals exhibit heterotrophic mode of nutrition. Heterotrophic mode of nutrition can be categorised into holozoic mode, parasitic mode and saprophytic modes of nutrition.*Holozoic mode of nutrition is the process in which an organism takes in whole food. The food ingested undergoes digestion, absorption and assimilation. e.g. small organisms like amoeba large organisms like human beings.*Parasitic mode of nutrition is the process in which organism derives its nourishment from host organisms either in liquid form or nutrient form. e.g. Taenia solium is the tape worm living in human intestine.*Saprophytic mode of nutrition is the process in which organism derives its nourishment from dead and decaying matter. e.g. Fungi are heterotrophs that acquire their nutrients from dead and decaying matter by absorption. |
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| 58498. |
Why is DNA copying is essential? |
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Answer» It is essential because it helps in transferring characters from parents to their offsprings and also to bring variations during sexual reproduction DNAs are the carriers of genetic information. For an organism to produce its own kind, it becomes necessary that the offspring get similar DNAs as in parents. DNA replication is the way through which a cell makes additional copies of DNA so that they can be transferred to the offspring. This explains how DNA copying is an essential part of the process of replication. |
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| 58499. |
What is the alloy of lead and tin |
| Answer» Solder | |
| 58500. |
What is the work of ***** |
| Answer» | |