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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your Science knowledge and support exam preparation. Choose a topic below to get started.
| 2101. |
How we identify polar nature of molecules? |
| Answer» <p>Polarity describes the tendency of a substance to have a molecular dipole, or a positively and a negatively charged end. Polar molecules are made of elements with different electronegativities, or electron attractions, meaning that one element possesses the shared electrons more often than the other. This gives the more electronegative element a partially negative charge and the more electropositive element a partially positive charge. If these elements are arranged symmetrically, so that these charges cancel one another, the molecule is non-polar. If they are arranged asymmetrically, however, they form a polar molecule.</p> | |
| 2102. |
2. How the solubility of a gas in water changes with increase in its temperaturecocs of filtration is known as what?d in tho pro |
| Answer» <p>Increased temperaturecauses anincreasein kinetic energy. The higher kinetic energy causes more motion in thegasmolecules which break intermolecular bonds and escape from solution. thesolubilityof agas decreasesas shown by the downward trend in the graph.</p> <p>google se </p> | |
| 2103. |
how the solubility of a gas on water changes qwith increase in its temperature |
| Answer» <p>For Gases, solubility decreases as temperature increases. The physical reason for this is that when most gases dissolve in solution, the process is exothermic. This means that heat is released as the gas dissolves. This is very similar to the reason that vapor pressure increases with temperature. Increased temperature causes an increase in kinetic energy. The higher kinetic energy causes more motion in the gas molecules which break intermolecular bonds and escape from solution.</p> | |
| 2104. |
3x -y-5 0 anif the lines represented by these equation14. Equations Reducible to SimultanILLUSTRATIVExample 1. Solve the following pairs of equat1 1 13-= 2 and414 and 0-4y-236(iii)+3y(iv)(r-1)+(y-2) = 2 and (x-)-(y |
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| 2105. |
Write about the contribution of the Indus civilization. 35- |
| Answer» <p>INDUS VALLY CIVILIZATION</p><p>The Indus Valley civilization, India's earliest known civilization (2500-1700 BC), is identified by its interesting culture as well as its artifacts. The strength and basis of Hinduism is attributed to the Vedic culture (about 1500), as well as the origin of the caste system.</p><p>Priest-king</p><p>Archaeologist once named this sculpture the 'Priest-King'. They thought that the sculpture may have been of a ruler who was an important man or priest.He is wearing a headband. Gold headbands like this have been found in Mohenjo-Daro. This band has a circular ornament. There is a similar band on his right arm.</p><p>Communication</p><p>Adoptingthe natureof openness</p><p>Excellencewill not beachievedwithoutmakingcontactandexchangingviewswithother parties</p><p>RelationswithMesopotamiaCivilization&Ancient EgyptianCivilizationhave benefitedtheInduscivilization, especiallyintechnology transfer.</p><p>Induscivilizationshowsthatasocietywill not beableto excelwithoutmakingcontactandexchangingviewswithother parties.</p><p>Relationswith thecivilizationsof Mesopotamiaallowsalloutside influencesadaptedtolocal conditions.</p><p>IndusCivilizationhas beenshowntothe publicdisclosure ofthe nature ofthe modern worldisinthe process ofbuildingacivilization,includingsecurity.</p><p>IndusCivilizationhas taught usthatpeaceandsecurityisthe cornerstone ofanationtoachieve progressandexcellence.</p> | |
| 2106. |
what is anti matter |
| Answer» <p>matter consisting of elementary particles which are the antiparticles of those making up normal matter.</p> <p>In modern physics, antimatter is defined as a material composed of the antiparticle to the corresponding particles of ordinary matter. In theory, a particle and its anti-particle have the same mass as one another, but opposite electric charge and other differences in quantum numbers</p> | |
| 2107. |
Phase Rule is given by :(1) Nernst(2) Gibbs(3)Planck(4)Einstein |
| Answer» <p>Answer:2)Gibbs</p><p>Explanation:</p><p>Thephase ruleis a general principle governing systems inthermodynamic equilibrium. IfFis the number ofdegrees of freedom,Cis the number ofcomponentsandPis the number ofphases, then</p><p>F=C-P+2</p><p>It was derived byJosiah Willard Gibbsin his landmark paper titledOn the Equilibrium of Heterogeneous Substances, published in parts between 1875 and 1878.</p> | |
| 2108. |
diameter of the mercury atom. (Hg200)LIT]ent in () 8-5 g of NH3, (1) 0-02 mole of14. How many g-atoms of hydrogen are presCuSO4.5H20?tained hu the eiectrolvtic decompos1- |
| Answer» <p>Calculate the moles of NH38.5 g / 17.03 g/mole = 0.499 mole ie0.5molemultiply it by avogdro number u will get no.of molecules4 atoms/molecule of NH30.5 mole x 4 atoms/mole x 6.022x10^23 molecules per mole = 1.20x10^24</p> | |
| 2109. |
One kg of Calcium has how many g atom of aC2de |
| Answer» <p>Given weight=1kg=1000g gram molecular weight of cacl2=40+71=111g no. of molecules=(given weight/gram molecular weight )*avagadro number avagadro number=6.023*10^23 No. of molecules=(1000/111)*6.023*10^23 =5.4*10^24 </p> | |
| 2110. |
1 25 A,1,- 1-875 A 13eat stone bridge circuit have the resistances in various arms as shown inNCERT SIved ExampleFig 2b).17. Calculate the current through the galvanometer. |
| Answer» <p>Please provide the complete question. The figure is missing. </p> | |
| 2111. |
Is in seconds. Find the impulse impartod to uN puuA ball of mass 100 g moving with a speed of 4 m/sec strikes a horizontal surface at an anglo of30° from the surface. The ball is reflected back with same speed and same angle of reflection find (a)The impulse imparted to the ball (b) change in magnitude of momentum of the ballE-2.10cm in dameter fall with an average speed of 20 m/s. |
| Answer» <p>let ball is moving in x-y plane & approaching a wall at an angle 30 degree which is placed in y-z plane...</p><p>initial momentam of ball is Pi=mvcos30 i + mvsin30(-j)</p><p>finally it returnes at same angle & with same velocity so its final momntam is</p><p>Pf= mvcos30(-i) + mvsin30(-j)</p><p>change in momentam= Pi- Pi=2mvcos30</p><p> =mv</p><p> =100v</p> | |
| 2112. |
196 Chlortne is prepared in the laboratory by treating manganese dloxide Mn0, wihmanganese dioxide (Mno)aqueous hydrochloric acid according to the reactionHow many grams of HCI react with 5.0 g of manganese dioxide? |
| Answer» <p>thanks</p> | |
| 2113. |
of water at room temperature is 1.0 g/mL. How many molecules are there in a drop of water if its volume is0.05 ml.?ait ofacid hase hy takinp suitable example |
| Answer» <p>Mass = Volume*Density so, A.T.Qmass of water= (0.05*1)g =0.05g H2O (both millilitres cancel out)=no of molecules= no of moles*6.022*10^23Now, no of moles= given mass/molecular mass=0.05 /18 (since molecular mass of h2o =1*2+16 )no of molecules= 0.05/18*6.022*10^23</p><p>no of moleculesin 1 drop of water =1.672 *10^21</p> | |
| 2114. |
What is one torr of pressure? |
| Answer» <p>A pressure that causes the Hg column to rise 1 millimeter is called a torr.</p> | |
| 2115. |
Most stable radical is:AMU (Med.) 2013]ÄH2(c) CH,-CHCH2 (d) CH-CH |
| Answer» <p>option A is the correct answer</p><p>because , in A , radical is at 3° and also, resonating.</p> <p>but answer is (c)</p> <p>in C also there is resonance , may any exception involved. </p><p>may be because of congestion in ring , A is less stable than C</p> | |
| 2116. |
What are divalent ions |
| Answer» <p>Divalent ion is ion with Valency 2</p> | |
| 2117. |
3.What kind of growth conditions are required for these plants? |
| Answer» <p>The principal environmental requirements for plant growth include adequate space for root and canopy development, sufficientlight,water,oxygen, carbon dioxide, and mineral elements, and temperature suitable for essential physiologic processes.</p> | |
| 2118. |
what is ions |
| Answer» <p>An ion is an atom or molecule that has a non-zero net electrical charge.</p> | |
| 2119. |
24A 10 ohm resistor is connected to a supply voltage altemating between +4V andfollowing graph. The average power dissipated in the resistor per cycle isOlympiad (Stage 1) 2017)Voltage (V0.0 0 02030406 Time (s)-2(D) 1.6Ware connected in series with an(A) 1.0w(B) 1.2 W(C) 1.4W |
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| 2120. |
स्पेक्ट्रम के तरंगदेय का परतके हैं। इन :ygdAd (750mm ste iComश' कीVacबात3x10 ms?| ५00X10) ९।। |
| Answer» <p>o((kkkkjzhshdhdkshdhsjsjsksl</p> | |
| 2121. |
state three key conditions required for the formation of thunderstorms |
| Answer» <p>Thunder storms are a storm system characterized by presence of lightning and its acoustic effect on the earths atmosphere "the thunder". They are associated with a type of cloud known as the"Cumulonimbus". Although lightning and thunder occur simultaneously, we see lightning first and then hear thunder as light travels faster than sound.</p><p>Formation:-</p><p>Thunderstorms need the following trio for their formation1) Moisture2)Unstable air mass3)A lift (in this case the heat)</p> | |
| 2122. |
What are the necessary conditions for seed germination ? |
| Answer» <p>Three factors are required for successful germination:Water - allows the seed to swell up and the embryo to start growing.Oxygen - so that energy can be released for germination.Warmth - germination improves as temperature rises (up to a maximum)</p> <p>good health </p> <p>good health </p> <p>good health </p> | |
| 2123. |
Write the necessary conditions for rusting of iron to take place. |
| Answer» <p>Rusting of iron takes place in the presence of moisture and air. So the presence of air and water vapour in air are two necessary conditions for rusting of iron.</p> | |
| 2124. |
why machines doesn't produce 100% efficiency? |
| Answer» <p>No machine is free from the effects of gravity, and even with wonderful lubrication, friction always exists. Theenergya machine produces is always less than the energy put into it (energy input). Most machines transfer energy from one place or another, or transform one form of energy (e.g. chemical) into another (e.g. mechanical), but machines can`t create any form of energy. This tendency of systems to lose energy is called entropy.</p><p>Entropy in a closed system never goes down. Systems always tend toward a state of decreasing order unless more energy is provided into the system to counteract this tendency.</p><p>That is why 100% efficiency in machines shall not be possible.</p> <p>because some energy is always released in the form of heat.</p> | |
| 2125. |
Define chemistry. |
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| 2126. |
1. A resistor has a resistance of 176 ohms. How many of these resistors shola be connected in parallel so thattheir combination draws a current of 5 amperes from a 220 volt supply line ? |
| Answer» <p>thanks sir</p> | |
| 2127. |
Name a holozoicanswer the following in not more than 40 u4. What are saprophytes and parasites?cial features relate |
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| 2128. |
The mass and diameter of a planet are twice thosef earth. The period of oscillation of pendulum onthis planet will be (If it is a second's pendulum onearth)(2) 22 s(3) 2 s |
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| 2129. |
(c) What is reciprocal lattice? |
| Answer» <p>In physics, the reciprocal lattice represents the Fourier transform of another lattice. In normal usage, this first lattice is usually a periodic spatial function in real-space and is also known as the direct lattice</p> | |
| 2130. |
(1) Which planet is nearest to the sun?Ans. |
| Answer» <p>The answer is planet Mercury. At an average distance of only 57.9 million km, Mercury orbits closer to the Sun than any other planet.</p> <p>The answer of this question is mercury. </p><p>I hope you like the answer. </p> <p>mercury is the correct answer </p> <p>mercury is the correct answer of the given question </p> <p>mercury is the best answer </p> <p>The right answer is mercury. </p> <p>Mercury is the answer of the following</p> <p>mercury is the nearest planet to the sun</p> <p>mercury is the best answer.</p> <p>mercury is the nearest planet to the sun</p> <p>mercury is the best and right ans</p> <p>mercury is right one</p> <p>planet mercury is nearest to the sun.</p> <p>Mercury is the nearest planet to the sun.</p> <p>mercury is the correct answer </p> | |
| 2131. |
A hollow sphere is held suspended. Sand is now pouredinto it in stages.The centre of gravity of the sphere with the sanda) rises continuously(b)remains unchanged in the process(c)First rises and then falls to the original position(d)First falls and then rises to the original position |
| Answer» <p>The centre of gravity initially falls become while pouring sand it comes to the bottom of the sphere so mass is concentrated in the bottom so centre of gravity falls.And after filling all the sphere with sand it comes to its original position.</p> | |
| 2132. |
Mention the precAUTIONS TAKEN DURING EARTHQUAKES. |
| Answer» <p>1. Drop to the ground; take cover by getting under a sturdy table or other piece of furniture; and hold on until the shaking stops. If there is no table or desk near you, cover your face and head with your arms andcrouch in an inside corner of the building.</p><p>2. Protect yourself by staying under the lintel of an inner door, in the corner of a room, under a table or even under a bed.3. Stay away from glass, windows, outside doors and walls, and anything that could fall, (such as lighting fixtures or furniture).4. Stay in bed if you are there when the earthquake strikes. Hold on and protect your head with a pillow, unless you are under a heavy light fixture that could fall. In that case, move to the nearest safe place.5. Use a doorway for shelter only if it is in close proximity to you and if you know it is a strongly supported,load bearing doorway.6. Be aware that the electricity may go out or the sprinkler systems or fire alarms may turn on.</p> | |
| 2133. |
Kilogram is a bigger unit ofa. weightc. lengthb. temperatured. time |
| Answer» <p>a) weight is a unit of kilograms</p> | |
| 2134. |
5. Tne TypeIlI. Answer the following in on1. Define flower.2. Where is the male gan |
| Answer» <p>Flower is the seed-bearing part of a plant, consisting of reproductive organs (stamens and carpels) that are typically surrounded by a brightly coloured corolla (petals) and a green calyx (sepals).</p> | |
| 2135. |
Draw the molecular orbital diagram for oxygen molecule (O 2) and calculate bond |
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| 2136. |
stalline(g) Dilute HCI was added to limestone. |
| Answer» <p>Limestonecan be treated withhydrochloric acidto form calcium chloride and carbon dioxide: If concentrated (36%)hydrochloric acidis utilised, the concentration of CaCl2in the produced solution will be approximately 40% and further evaporation is only needed when flakes are produced.</p> | |
| 2137. |
What is bar pendulum? Describe the experiment for determination of 'g' andAlso give Ferguson correction for the determination of k |
| Answer» <p>Abar pendulumis the simplest form of compoundpendulum. It is in the form of a rectangularbar(with its length much larger than the breadth and the thickness) with holes (for fixing the knife edges) drilled along its length at equal separation.</p> | |
| 2138. |
what is the use of water |
| Answer» <p>The water footprint shows the extent of water use in relation to consumption by people. The water footprint of an individual, community or business is defined as the total volume of fresh water used to produce the goods and services consumed by the individual or community or produced by the business.</p> <p>The water is our life when we not get water we can't live </p> <p>Water is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere, and the fluids of most living organisms. It is vital for all known forms of life, even though it provides no calories or organic nutrients</p> <p>The most common water uses include:</p><p>Drinking and Household Needs.</p><p>Recreation.</p><p>Industry and Commerce.</p><p>Agriculture.</p><p>Thermoelectricity/Energy.</p> <p>water is used for drinking household needs recreation industries and in commerce agriculture thermoelectricity energy</p> <p>The daily uses include drinking, cooking, bathing, washing, clothes and dishes, brushing teeth, watering the garden etc.. </p> <p>The water is part of our life,we are use daily in our life. We are drink daily water and many work where we used to water.</p> | |
| 2139. |
Igneous Rocksmade from |
| Answer» <p>Igneous rock are made from cooling of molten magma on the earth's surface.</p><p>Please hit like button if you find my answer useful !</p> | |
| 2140. |
5Discuss the structure of Lichen apothecium. |
| Answer» <p>A "podetium" (plural: podetia) is a lichenized stalk-likestructureof the fruiting body rising from the thallus, associated with some fungi that produce a fungalapothecium. ... Mostlichensproduce abundant sexualstructures. Many species appear to disperse only by sexual spores.</p> <p>A "podetium" (plural: podetia) is a lichenized stalk-likestructureof the fruiting body rising from the thallus, associated with some fungi that produce a fungalapothecium. ... Instead, thelichen-forming fungi of these species reproduce sexually by self-fertilization (i.e. they are homothallic).</p> | |
| 2141. |
Which of the following property of a proton can change while it movesfreely in a magnetic field? (There may be more than one correct answer.)(a) mass(c) velocity(b) speed(d) momentum |
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| 2142. |
(Polymerase Chain Reaction) |
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| 2143. |
0. Process of polymerase chain reaction. |
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| 2144. |
Enzymatic Amplification of DNA by PCRPolymerase Chain Reaction) |
| Answer» <p>Thepolymerase chain reaction(PCR) is used toenzymatically amplifysmall quantities of specificDNAsequences.</p> | |
| 2145. |
12.Under similar conditions of temperature and pressuro, In which of the following gases thevelocity of sound will be largestL(A) H2(B) N2(C) Ho(D) CO |
| Answer» <p>option A</p> | |
| 2146. |
a.i Draw the resonance structures for the following compounds. Stow the electronshift using curved-arrow notation.(a) C.HOH (b) C.H,NO, (c) CH, CH CHCHO (d) C.H,-CHO telD CH,CH CHCHs -CH, |
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| 2147. |
Why do all aircraft windows have a tiny hole in them?(a) to equalise pressure between the two panes of the window.(b) to easily crack the window in case of emergency.(c) for better ventilation in the aircraft.(d) to help in regulating the temperature of the aircraft. |
| Answer» <p>a..Theholeserves as a bleed valve, allowing pressure between the air in the passenger cabin and the air between the outer and middle panes to equilibrate. Thistiny little holeensures that cabin pressure during flight is applied only to the outer pane.</p> <p>thanks</p> | |
| 2148. |
which insect is used to control prickly pear weed? |
| Answer» <p>cochineal is the right answer</p> <p>cochineal is the correct answer</p> <p>cochineal..................</p> <p>cochineal is the right answer</p> | |
| 2149. |
Why diffusion is important? |
| Answer» <p>Diffusion is importantto organisms because it is the process by which useful molecules enter the body cells and waste products are removed. Digested food molecules (amino acids, glucose) move down a concentration gradient from the intestine to the blood.</p> | |
| 2150. |
An insect breathes through_____________ |
| Answer» <p>an insect breathes through with a network of tiny tubes called tracheae </p> <p>An insect breathes through with a network of tiny tubes called tracheae</p> <p>Tracheae is the right answer </p> <p>Tracheae is the answer of the following</p> <p>Tracheae is the right answer </p> <p>through a network of tiny tubules called trachea</p> <p>gills is your right answer</p> <p>Instead of lungs, insects breathe with a network of tiny tubes called tracheae. Air enters the tubes through a row of holes along an insect’s abdomen. The air then diffuses down the blind-ended tracheae</p> <p>an insect breathes through-with a network of tiny tubes called trachese.</p> <p>Tracheae is correct answer</p> <p>the answer of following question is tracheae </p> | |