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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.
| 65401. |
Which one is more reactive between sodium and barium? |
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Answer» Sodium Sodium is more reactive than barium |
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| 65402. |
What are the differences between soap & detergent |
| Answer» \t\xa0SoapsDetergents1.Soaps are the sodium salts of long chain carboxylic acidsDetergents are sodium salts of long chain benzene sulphonic acids2.The ionic group in soaps is\xa0–COO-Na+The ionic group in soaps isSO3-Na+\xa0or SO4-Na+3.Soaps are not useful when water is hardDetergents can be used for washing purposes even when water is hard4.Soaps are biodegradableSome of the detergents are non-biodegradable5.Soaps have relatively weak cleansing actionDetergents have a strong cleansing action\t | |
| 65403. |
What is lateral shift?? |
| Answer» When a ray of light travels through a glass slab from air, it bends towards the normal and when it comes out of the other side of the glass slab, it bends away from the normal. It is found that the incident ray and the emergent ray are not along the same straight line, but the emergent ray seems to be displaced with respect to the incident ray. This shift in the emergent ray with respect to the incident ray is called lateral shift or lateral displacement. The incident and the emergent rays, however, remain parallel. The diagram is as shown: | |
| 65404. |
What was devastation to environment |
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| 65405. |
Pop ?? |
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Answer» When u sprinkle water on burning candle\'s flame u will hear a Pop sound. This happens due to water is having content of Hydrogen. Ok? When hydrogen is burning the sound is same like as pop |
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| 65406. |
What is secondary suffix |
| Answer» Secondary suffix indicates the functional group present in the molecule. It is added after the primary suffix. Depending on the number of occurrences of the same functional group in a compound, the words like di, tri, tetra etc., are prefixed to the secondary suffix. | |
| 65407. |
What is the principle and construction of generator |
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Answer» AC ka DC GeneratorA dc generator is an electrical machine which converts mechanical energy into direct current electricity. This energy conversion is based on the principle of production of dynamically induced emf. This article outlines basic construction and working of a DC generator.Construction Of A DC Machine:Note: A DC generator can be used as a DC motor without any constructional changes and vice versa is also possible. Thus, a DC generator or a DC motor can be broadly termed as a DC machine. These basic constructional details are also valid for the construction of a DC motor. Hence, let\'s call this point as construction of a DC machine instead of just \'construction of a dc generator\'.Construction of a DC machine (DC Generator and DC Motor) Contruction of generator kiska AC ka ya DC ka??? Principle of electric generator:The electric generator is an application of electromagnetic induction. The electric generator works on the principle that when a straight conductor is moved in a magnetic field, then current is induced in the conductor. In an electric generator a rectangular coil is made to rotate rapidly in the magnetic field between the poles of a horseshoe type magnet. When the coil rotates in the magnetic field lines due to which a current is produced in the coil. |
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| 65408. |
What was Lenz law |
| Answer» Lenz law of electromagnetic induction states that, when an emf induces according to Faraday’s law, the polarity (direction) of that induced emf is such that it opposes the cause of its production. According to Lenz’s law,E = –dφ/dtThe negative sign shows that the direction of the induced emf and the direction of change in magnetic fields have opposite signs. Suppose we have a coil and a bar magnet. | |
| 65409. |
What do you mean by chemistry |
| Answer» Chemistry is the branch of science which deals with the property of matter, it\'s composition, structure and the reactions, they undergo. | |
| 65410. |
Why are some substances biodegradable and some non biodegradable |
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Answer» What is science Substances that are broken down by biological processes are said to be biodegradable. In our environment, many of the substances are broken easily by decomposers (bacteria and fungi) as they possess specific enzymes for such activity. However, there are other substances also which are not broken down in this manner and are known as non-biodegradable substances. Since these substances are not degraded by bacteria and fungi, so they persist for a long time. These non-biodegradable substances will be acted upon by physical processes like heat and pressure. The main reason of a substance being biodegradable is being organic that can be used up by scavengers of environment. On the other hand some substances are non biodegradable because they are synthetic and cannot be decomposed by the microorganism. |
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| 65411. |
Hydoelectricity power plant |
| Answer» \tDams are constructed at heights to obstruct the flow of water and store it. The stored water has Potential Energy.\tWater stored in heights now is allowed to flow to low levels. The potential energy is converted to kinetic energy and moves the turbines.\tElectricity is produced.\tThis is called Hydroelectricity because the potential energy of water which is stored at elevated heights is converted into kinetic energy of flowing water which in turn is converted electricity\tIt is a renewable source of energy, since rainfall comes over and over again.\tMost of the electricity in India is generated in this method. Since there are not many natural waterfalls, dams are constructed to store water at heights and then allowed to fall and this energy is used to move turbines and thereby generate electricity. | |
| 65412. |
Essy |
| Answer» | |
| 65413. |
Formula of rust? |
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Answer» FE2O3.xH2o Fe2O3.XH2O 4fe2 3o2 .xh2o |
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| 65414. |
How plant take nitrogen ? |
| Answer» By their roots , there are nitrogen fixings bacteria present in their roots. | |
| 65415. |
How is it possible to produce induced current just by motion in a magnetic field |
| Answer» Yep but only if a conductor is moved | |
| 65416. |
What is the relation between wavelength and scattering of light? (1 marks) |
| Answer» Wavelength is inversely proportional to scattering of light | |
| 65417. |
Should the dihybrid ratio be 9:3:3:1 always? Cant we write it as 3:3:9:1 if we change the order? |
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Answer» No, we can not write because ratio never changes it\'s order No |
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| 65418. |
Specify the condition in which ethanol under go oxidation to form ethanoic acid |
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Answer» Ethanol undergoes oxidation reaction in presence of acidified potassium dichromate or alkaline potassium permanganate to produce Ethanoic acid.C2H5OH ----> CH3COOH When an oxidizing agent either alkaline potassium permagnet or alkaline potassium dichromate is added to alcohol then it is converted to carboxylic acid. As in case of ethanol and ethanoic acid |
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| 65419. |
What do you mean by refractive index? |
| Answer» Refractive index is the ratio of the speed of light in air or vacuum to that of the speed of light in a given medium. | |
| 65420. |
Nitrogen |
| Answer» | |
| 65421. |
If energy can neither be created nor be destroyed then why we worry about our energy resources? |
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Answer» Energy comes in different form and one can be converted into another form. For example if we light a candle the process is highly exothermic in which chemical energy in candle changes into heat and light energy on burning. The total energy during the physical and chemical process remains the same but we cannot put together the heat and light generated along with products of the reaction to get back the chemical energy in the form of wax. Hence the energy in the usable form dissipated in the surroundings in less usable forms.So the sources of energy we used to do work is consumed and cannot be used again. Because according to law of thermodynamics the energy gets used up in form of heat this energy can never be regained back again thus we actually need tonworry about it |
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| 65422. |
why do the ionic compound have high melting point |
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Answer» Because they have strong force of attraction between them and thus it requires a lot of energy ⚡ to break their attraction. Ionic compounds have high melting point because they transfer their electrons. |
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| 65423. |
Function of testis? |
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Answer» Testis are located in outside of abundance gavity in ******* because sperm formation requires lower temperature then normal body temperature it secreates testosterone hormones which bring changes in boys at the time of puberty. They produce gametes or sperm and they secret hormones, primarily testosterone Produce sperm ie, male gamates |
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| 65424. |
How are fossil formed state any one role in the study of organic evolution |
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Answer» BecAuse it gives that prove about the species Ye answer bio k book me mil jaiga |
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| 65425. |
What cause of variations |
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Answer» Variations are caused due mistakes that occurs during DNA replication or copying Variations are caused by DNA |
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| 65426. |
What is sclera in human eye??? |
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Answer» Thnks for ur answrs.... Sclera is the outermost hard, white, and opaque part of eye its function is to protect the eye from exteral injuries and maintain the shape of eye......?? The sclera also known as the white of the eye is the opaque fibrous protective outer layer of the human eye containting mainly collogen and some elastic fiber. The white part |
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| 65427. |
Why dna copy is important |
| Answer» To have maximum no. Of variations in the ofsprings.. | |
| 65428. |
Which ore is treated to get rotten egg smell |
| Answer» The ore which gives rotten egg smell when reacted with Hcl is H2SSo , ore is Sulphide.It can be concentrated by Froth Flotation process. | |
| 65429. |
Where are gean loceted. |
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Answer» It is located in chromosome Inside th DNA Gene is a part of chromosome which control the appearance of set of hereditary |
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| 65430. |
Why are non metal is called electo nigetive element |
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Answer» They are arrange in electrons order .They are noble gases. eg- Helium Because they accept electrons in order to get noble gas stage |
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| 65431. |
Tissus |
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Answer» Answer: A group of similar cells organized to perform a particular function is a "tissue." A group of similar types of cells. |
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| 65432. |
What is covelabt bond |
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Answer» The arrangement in which atom of two elements get their stable configuration by sharing of electrons in their outermost shell is called covalent bonding and the bond form is called COVALENT BOND Covalent bond is a type of bond formed by sharing a pair of electrons between atoms . The atoms taking part in bonding do not have energy to gain or loose electrons, so to complete their octet they take part in sharing of electrons forming a covalent bond. |
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| 65433. |
What are significance of sexual reproduction over asexual reproduction |
| Answer» Sexual Reproduction is superior to asexual reproduction mainly for the reason that it involves gametes from two different individuals. This improves chances of variations which is the basis of heredity and evolution. In asexual reproduction, only one parent\'s gamete is involved. Thus the offspring is liable to have all the characteristics ( and defects) of the parent which doesnot allow variation. | |
| 65434. |
What are alklene |
| Answer» Alkalis are bases which are completely soluble in water.Sodium oxide and potassium oxide are alkalis which dissolve in water to form soluble bases sodium hydroxide and potassium hydroxide respectively. | |
| 65435. |
Explain how methanol is lethal. (Write reaction for the oxidation of methanol to methanal) |
| Answer» Methanol is toxic by two mechanisms. First, methanol can be fatal due to its CNS depressant properties in the same manner as ethanol poisoning. ... Methanol is converted to formaldehyde via alcohol dehydrogenase (ADH) and formaldehyde is converted to formic acid (formate) via aldehyde dehydrogenase (ALDH). | |
| 65436. |
what happens when we come downward in period in the morden periodic table |
| Answer» The metallic character increases when we come down in a group whereas the metallic character decreases across a period | |
| 65437. |
State and prove ohm\'s law |
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Answer» Statement of Ohm\'s Law: Ohm\'s law states that at a constant temperature, current \'I\' through a conductor between two points is directly proportional to the potential difference or voltage \'V\', across the two points. That is, Thus, the ratio V : I is a constant. According to Ohm law , the current through certain conductor is directly proportional to the Pd between its ends at a constant temperature. |
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| 65438. |
Father blood group b positive mothers blood group o positive which is dominating trade why |
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Answer» B positive Not possible to predict the dominating trait |
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| 65439. |
Two possible Carbon skeleton with four carbon atoms |
| Answer» 2 methylpropane | |
| 65440. |
what is the difference between electric potential and electric potential energy |
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Answer» V=W/Q potential diffrence = work done/charge moved A potential of 1 volt at a point means that 1 joule of work is done in moving 1 unit positive charge from infenity to that point |
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| 65441. |
Explain the formation of ammonia molecule |
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| 65442. |
What are contraceptives? |
| Answer» Preventing of pregnancy. | |
| 65443. |
Explain Darwin theory in simple English language |
| Answer» Over-production: Every organism has enormous potential to reproduce.Struggle for existence: Population size of an organism is limited due to struggle between the members of same species as well as the members of different species. It is due to struggle for food, space and mate.Variation: Due to struggle, the fit organisms possess some variations which are favourable, and they can leave the progeny to continue the favourable variations.Survival of the fittest: The fittest organism survive to continue the favourable variations.Formation of a new species: These variations when accumulated for a long time, leads to the origin of a new species. | |
| 65444. |
Derivation of P=VI |
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Answer» We know that energy = VITSO, P=W/T POWER=ENERGY ,P=VIT/T....( ONE TIOME IS CUTTED )P=VITHANKS Power = work / time So work = V×Q.( by formula of pd) And Q = IT ( By formula of electric current.) So p = V× I×T / T NOW T and T cancel .... So p = vi Proved..... Energy=VIT And power= energy/time So P = VIT/T =VI |
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| 65445. |
Earth se space me jaane ke liye hume kitni speed chahiye |
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Answer» If you want TO reach space you need to Cross ( ESCAPE VOLOCITY )WHOSE SPEED IS FIXED 11.2 KM/STHAN ONLY YOU CROSS THE GRAVITATIONAL FORCE OF EARTH .. AND IF YOU THIK ....THIS THEORY IS UESD IN ROCKET.....BY OUR SCIENTIST........... Bro if you wants to reach space by crossing earth gravitational force You have to need a ESCAPE VELOCITY .. Whose speed is Fix which is 11.2 Km/SThis is fixed value.... your speed must be 11.2km/second If you went straight with a car u can reach the space in just one hour |
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| 65446. |
How do an female animal give birth baby animal without male animal |
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Answer» By artificial fertilization Through artificial fertilization |
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| 65447. |
Five properties of element and different of same periods |
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| 65448. |
One gaseous hormone in plants... |
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Answer» Rishika...... What ttt... I said gaseous... OK AuxinsGibberelinsCytokininAbscisic acid Dhanyawad..... ☺️ Ethylene is the hormone which is present in plants |
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| 65449. |
If hydogen and oxygen catch fire then why water does not catch fire? |
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Answer» Hydrogen catches fire to give water but o2 dont .substances burns only in presence of o2. O2 helps in burning Karanbeer can u please explain it again... I am not able to understand it completely... Soo please... The true answer to the question is that the hydrogen in water is fully oxidized. It cannot burn further to become more oxidized as it has no further electrons. Both hydrogen and oxygen do not burn, or oxidize. Hydrogen “burns”, oxidizes, and oxygen is what allows that to happen by reacting with the hydrogen. |
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| 65450. |
Coal and petroleum are also alkanes, then y does they produce smoke |
| Answer» Petrol and coal produce gasses like monooxide , nitrogen oxide and sulphur dioxide which we cannot see | |