InterviewSolution
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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.
| 3901. |
Why did the need for man-madematerials arise? |
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| 3902. |
.Howare synthetic detergents better than soaps? |
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| 3903. |
Plantswater or bo3 The plant shown hore is adapieg te grew in desei ait has(A) Breathing rools(B) Floshy stom(D) Both (B) and (0)CLASS 4 |
| Answer» <p>option(b) is the correct answerthe plant shown is of cactus which grows in desert.</p> | |
| 3904. |
State two economically important uses of:a) heterotrophic bacteria(b) archaebacteria2. |
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| 3905. |
1.State two uses of concave mirrors |
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| 3906. |
7. In a double slit interference experiment, the separationbetween the slits is 1:0 mm, the wavelength of light usedis 50 × 10-' m and the distance of the screen from. theslits is 1 0 m. (a) Find the distance of the centre of thefirst minimum from the centre of the central maximum.(b) How many bright fringes are formed in onecentimeter width on the screen?ment two narrow vertical |
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| 3907. |
1. State the condition when on applying a force, the bodyhas(a) the translational motion, (b) the rotational motion. |
| Answer» <p>Translational motionis motion that involves the sliding of an object in one or more of the three dimensions:x,yorz. But an object can still be moving even when it's just sitting at a particularx-,y- andz-coordinate; it can still spin.</p><p>Rotational motionis where an object spins around an internal axis in a continuous way. An ice-skater can do this by spinning on the spot. She will give herself rotational energy. And because energy is always conserved and a smaller object must spin faster to have the same energy, when she moves her arms in towards her body, her rotation speed will increase - the spinning will get faster and faster.</p> <p> thank you friends for your great help</p> | |
| 3908. |
Give an example of rotational motion. |
| Answer» <p>example of rotational motion- Motion of a spinning top. </p> <p>motion of the electron around the nucleus in the atom</p> <p>example of rotational motion motion of a spinning top.it is the correct answer.</p> <p>revolution of earth around the sun is an example of rotational motion</p> <p>rotational motion of a spinning top. example of the given questions. is right answer </p> <p>motion of spinning top is the correct answer of the given question</p> <p>EXample of rotational motion motion of a spinning top. it is the correct answer </p> <p>motion of the earth around the sun is also an example of rotational motion</p><p>if u satisfied with the ans then like or cmmt ✌️</p> <p>spinning machine is the right answer </p> <p>Motion of spinning</p><p>hopes its helful</p> <p>Revolution of earth is the best example of rotating motion</p> <p>spinning machine is the answer of the following </p> <p>Example of rotational motion motion of a spinning top. it is the correct answer</p> <p>rotation of earth on its own axis</p> | |
| 3909. |
3. Fill in the blanks using one of the words : atrest, in motion.(a) A person walking in a compartment of astationary train is ......... relative to thecompartment and is ....... relative to theplatform. |
| Answer» <p>motion and motion is the answer</p> <p>motion and motion is right answer of this question. please like my answer </p> <p>motion is the correct answer of the given question</p> <p>motion is the right answer to your question I hope that my answer helped you . If it helped like my answer and accept as best answer </p> | |
| 3910. |
Where permanent magnet is used?a) Relays)Solenoids4.b) Ignition coild) Moving coil instruments |
| Answer» <p>permanent magnet is used in moving coil instruments..</p> | |
| 3911. |
3) List the various instruments used in meterology. |
| Answer» <p>Meteorological Instruments -</p><p>actinometer</p><p>Agricultural meteorology</p><p>anemometer</p><p>aneroid barometer</p><p>atmometer</p><p>Atmospheric circulation</p><p>barograph</p><p>Barometers</p><p>evaporimeter</p><p>hygrometer</p><p>Meteorological radar stations</p><p>psychrometer</p><p>Radar meteorology</p><p>radiosonde</p><p>theodolite</p><p>weather balloon</p><p>Weather Report</p><p>weather satellite</p><p>weather vane</p><p>wind vane</p> | |
| 3912. |
1. The most basic of all test instrumentsis the |
| Answer» <p>Galvanometer is the most basic instrument</p> | |
| 3913. |
2 Musical instruments don't move as such, but produce vibratory motion. |
| Answer» <p>The regular vibration of common materials results in sound waves.Musical instruments create soundsthat can be varied in pitch and volume.</p><p>Some give off relatively pure tones, while others consist of a pleasing mix of frequencies.</p> | |
| 3914. |
4) Which instruments are used for checking dryness of air?esesee.. |
| Answer» <p>Ahygrometeris an instrument used to measure relative humidity. Humidity is the measure of the amount of moisture in the air. Apsychrometeris an example of ahygrometer.</p> | |
| 3915. |
3) List the various instruments used in meterology.eoe9ssse&9.essseta |
| Answer» <p>Daily Temperatures.Thermometersmeasure the high and low outdoor temperatures in degrees Fahrenheit and degrees Celsius. ...</p><p>Atmospheric Pressure. Barometers measure atmospheric pressure, providing the measurement in millibars. ...</p><p>Humidity Sensors</p><p>Wind Speed</p><p>Wind Vane.</p><p>RainGauge.</p><p>Hail Pad.</p><p>Campbell StokesRecorder.</p> | |
| 3916. |
Describe controlling torque in indicating type instruments. |
| Answer» <p>Controlling Torque :This torque is responsible to compensate the extra deflection made by the pointer due to the deflection torque. Hence, the desired reading is indicated</p> | |
| 3917. |
mr sharma spends 5/8of his income which is 5000,on food what is his income |
| Answer» <p>8000is right answer ......</p> | |
| 3918. |
Which is heavier gold or silver? |
| Answer» <p>Gold is heavier.....</p> | |
| 3919. |
Short Answer Questions.Give reasons for the following statements.1. Tungsten is used in filaments.2. Mercury is used in thermometers.3. Platinum, gold and silver are used to make jewellery4. Iron objects are electroplated5. Most metal objects are paintedII.A. |
| Answer» <p>1. Pure tungsten has some amazing properties including the highestmeltingpoint (3695 K), lowest vapor pressure, and greatest tensile strength out of all themetals.Because of these properties it is the most commonly used material forlight bulbfilaments</p><p>2. Mercury is the only one in liquid state at room temperature. It's used in thermometers because it hashigh coefficient of expansion. </p><p>Hence, the slightestchangein temperature is notable when it's used in a thermometer. It also has ahighboiling point which makes it very suitable to measure higher temperatures.</p><p>3. Goldandplatinumare even known as noble metals. They are not affected by air, water and even by chemicals. Since they have bright lustre,jewellerycan be made from them. ..</p><p>4. Objects are electroplatedto make them attractive or to protect them against corrosion.</p><p>Electroplatingis the coating of a metal objectby a thin layer of another metal(s) during electrolysis</p><p>5. Paintprevents the oxygen molecules from interacting with the underlying material to form an oxide. It's a protective barrier. Rust is a common name for iron oxide, butmost metalscan oxidize.</p> | |
| 3920. |
Which metal is used in making x-ray films?(a) Mercury; (b) Platinum; (c) SilverWhich |
| Answer» <p>thesilverrecovery business we know thatsilveris the only precious metal exists in x-ray film. This fact is good for all kinds of x-ray films including medical,lithographicand industrial x-rays.</p> | |
| 3921. |
1) Explain the concept- "Ecosystem". |
| Answer» <p>An ecosystem includes all of the living things (plants, animals, and organisms) in a given area that interact with each other, as well as the non-living environments (weather, earth, sun, soil, climate, atmosphere) that surround the living things.</p> | |
| 3922. |
supports wide varnety ULQ. 8. Explain, with examples, why we find animalsof certain kind living in particular climaticconditions. |
| Answer» <p>hii</p> <p>very long plase short them</p> | |
| 3923. |
(1) Which number is the highest? |
| Answer» <p>9999999999999999 is the answer of the following</p> <p>999999,999999999,999999999,99999,999,99,</p> <p>9999999999999999999999999999999999999999999999999999999999999999999999999</p> <p>999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999 </p> <p>we cant say which is highest ..we would say only then when we compare the no.or we have given some digit.</p> <p>its cannot determine its answer is infinite its is impossible to find it</p> <p>its cannot be determined it answer is infinite it is impossible to find it </p> | |
| 3924. |
A spherical shell of radius R 1.5 cm has a charge q= 20 uniformly distributed over it. What is theforce exerted by one half over the other half?(2) 102N(4) 2000 N)zero(3) 500 N |
| Answer» <p>It will be zero as every force will be canceled by another one. </p> | |
| 3925. |
It is a strange period of lifewhen you are neither a child noran adult. I wonder whether thisperiod between childhood andadulthood had a special name! |
| Answer» <p>Adolescent- A period of time inbetween adulthoodandchildhood.Children become more mature and become teenagers or preteens</p> | |
| 3926. |
WHAT IS A COLLOIDAL SOLUTION? |
| Answer» <p>Acolloidal solution, sometimes known as acolloidalsuspension, is asolutionin which a material is evenly suspended in a liquid. In other words, acolloidis a microscopically small substance that is equally dispersed throughout another material.</p> | |
| 3927. |
WHAT IS A COLLOIDAL SOLUTION |
| Answer» <p>Acolloidal solution, sometimes known as acolloidalsuspension, is asolutionin which a material is evenly suspended in a liquid. In other words, acolloidis a microscopically small substance that is equally dispersed throughout another material.</p> | |
| 3928. |
3 WHAT IS A COLLOIDAL SOLUTION? |
| Answer» <p>Colloidal solutions, or colloidal suspensions, are nothing but a mixture in which the substances are regularly suspended in a fluid. A colloid is a very tiny and small material that is spread out uniformly all through another substance.</p> | |
| 3929. |
Can microorganisms be seen with the naked eye? If not, how can they beseen? ns4. |
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| 3930. |
17.Explain the process of nutrition in amoeba. |
| Answer» <p>in</p> | |
| 3931. |
3)Explain symbiotic nutrition. (Commensalism) |
| Answer» <p>Symbiotic nutrition is the relationship between the organisms in which they share their nutrition and shelter.Symbiotic relationships are a special type of interaction between species. Sometimes beneficial, sometimes harmful, these relationships are essential to many organisms and ecosystems, and they provide a balance that can only be achieved by working together</p> | |
| 3932. |
In amoeba, helps in digestion. |
| Answer» <p>contractile vacuole helps for taking about waste materials</p> | |
| 3933. |
SONAR |
| Answer» <p>Sonar (originally an acronym for SOund Navigation And Ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, communicate with or detect objects on or under the surface of the water, such as other vessels.</p> | |
| 3934. |
What means Lucky |
| Answer» <p>Yousaythat someone isluckywhen they have something that is verydesirableor when they are in a very desirablesituation.</p> <p>Thanks friend </p> | |
| 3935. |
11. An ultrasonic source of 0.07 MHz sends down a pulse towards the seabed, which returns after 0.65s. The velocity of sound in sea water is1700 m/s. Calculate the depth of the sea and wavelength of pulse. |
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| 3936. |
aning (c) only at nigeTick the correct alternativeonly10 The sea is compared to a falary cat (b) active man (c) hung() The sea rolls on the beach all day (ball eveningb) The sea, seen as a dog has a greasy paws() sharp pows(iv) The sea remains quiet in the al beginning of the year bymyear (c) end of the yearActivity 2 |
| Answer» <p>1 b active man2 c only at night3 agreasy paws4 a begning of the year</p> | |
| 3937. |
deep sea diving vessels have to which stand pressure from the crushing effect of sea water acting |
| Answer» <p>The pressure at a depth h in water is calculated using</p><p>P = ρ g h</p><p>So, this pressure has a high magnitude at a large depth.</p><p>But, also note that the pressure is same in all directions at a given depth. So, the submarine will experience a pressure on all of it's walls whether they are below or above. Imagine holding a banana in your hand and crushing it b closing your fist. The same would happen to the submarine. Hence, the answer is in all directions.</p> | |
| 3938. |
What are the main causes of the Pollution in the river of India? |
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| 3939. |
Q.11. What are the twe main parts of the |
| Answer» <p>A typical young seedling consists of three main parts: the radicle (embryonicroot), the hypocotyl (embryonicshoot), and the cotyledons (seed leaves).</p> | |
| 3940. |
Scienceshout ans.3.What are the general conditionsmecessary foul photosynthesis? |
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| 3941. |
How are fuels classified on the basis of their physical state? Give two examples of each. |
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| 3942. |
SciencePage.........shout - ANSaltat do you understand by the term?Name two main mode of mutuition. |
| Answer» <p>The process in which plants take in oxygen and utilise them to perform various life processes is called nutrition. The two modes of nutrition are autotrophs and heterotrophs</p> | |
| 3943. |
a halb0loe avould youret whisf into a uverfeim moon a bayakle fasci cy thite ugh, the colte ěľ nnans o the unuladtaquiMisl ov |
| Answer» <p>The centripetal acceleration in a wheel arise due to the internal elastic forces which in pairs cancel each other. So the system remains in equilibrium during rolling. [i] In a half wheel, the system is not symmetrical so, direction of angular momentum does not coincide with the direction of angular velocity and hence an external torque is required to maintain the rotation.</p> <p>thank you so much for this help</p> | |
| 3944. |
What is the dillerence between a relex action and walking? |
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| 3945. |
What is the difference between a reflex action and walking? |
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| 3946. |
zradS8LVLAbjective Type Questions5. Answer the following.(a) What are living things? Give examples. |
| Answer» <p>Living things can beplantswhich needair,water, nutrients, andsunlight. Living things can beanimalswhich need food,water, space, andshelter. There are living things and nonliving things everywhere. Living things eat, breathe, grow, move,reproduceand have senses.</p> <p>biotic things are called living things ex- human</p> <p>Living things are things that are living . e.g. tree and human beings </p> | |
| 3947. |
How much work is done in moving a charge of 2 C across two pointshaving a potential difference 12V?A 1 |
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| 3948. |
Example 12.2How much work is done in moving a charge of 2 C across two pointshaving a potential difference 12 V |
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| 3949. |
A taxi leaves the station X for station Y every 10 minutes. Simultaneously, a taxi leaves the station Y alsofor station X every 10 minutes. The taxis move at the same constant speed and go from X to Y or vice-versain 2 hours. How many taxis coming from the other side will each taxi meet enroute from Y to X?35/(1) 10(3) 12(2) 11(4) 23 |
| Answer» <p>When the taxi is just about to leave there will be taxis coming from the opposite side;</p><p>Our taxi will surely meet those taxis.</p><p> So, no. of taxis which will be in the path are:[(total time each taxi takes to reach destination)/(total time after which each taxi leaves the station)] + 1</p><p>In this case it is:120/10 + 1= 12+1=13(+1 as we need to take both the last and the first taxi).</p><p>So, we have total of 13 taxis on the path out of which we will subtract 1 as we are not considering the taxi meeting station Y.</p><p>Now, we need to calculate the no. of taxis which leave after our taxi leaves;</p><p>Those will be again:[(total time each taxi takes to reach destination)/(total time after which each taxi leaves the station)] +1in our case it is120/10 + 1= 12+1=13(+1 as we need to take both the last and the first taxi).</p><p>Now, we will subtract 2 as we have counted the taxi which will leave station X when our taxi leaves station Y twice and also as we are not considering the taxi meeting station X.</p><p>So, now we have a total of 12+11=23 taxis coming from other side which each taxi will meet enroute from Y to X</p> | |
| 3950. |
.TEL6. Name the microorganisms which can fix atmospheric nitrogen in the soil. |
| Answer» <p>Bacteria like Rhizobium and Azotobacter and blue green algae can fix atmospheric nitrogen in soil.</p> <p>Bacteria like Rhizobium </p> <p>bacteria like Rhizobium</p> | |