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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.
| 851. |
3ThreeparticlesP,QandRaresituatedatpointA on the circular path of radius 10 m. All threeparticles move along different paths and reach pointB as shown in figure. Then the ratio of distancetraversed by particles P and Q is |
| Answer» <p>u know the perimeter of circle is 2pi r.here r is radius ________________________§__§</p><p>now</p><p>Point A all P,Q,R particle present ,</p><p>now point B is present on opposite side of A</p><p>________________________________P particle goes from A to B anticlockwise ,</p><p>so it travel 2pi*10/2=10pi_________________________________Q particle goes clockwise ,</p><p>similarly to P is also be 2pi*10/2=10pi_____________________§§§</p><p>and R particle goes through the centre that why the distance travel by the R is 10+10=20(because 10 is the radius of circle)</p><p>__________________________________</p><p>now ratio of P/Q=10pi/10pi=1</p><p>P/R=Q/R=10pi/20=pi/2</p> | |
| 852. |
Find the roots of the following quadratic equations x^ { 2 } - 3 x - 10 = 0 \quad ( \text { ii } ) 2 x ^ { 2 } + x - 6 = 0 |
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| 853. |
A TRAIN IS MOVING! AT THE RATE OFRADIUS 2500 m THR How MANy |
| Answer» <p>This is a similar solution. Replace the respective values as per the question.</p> | |
| 854. |
,If the equation 9x2 + 6kx + 4 = 0 has equal roots, then K = ? |
| Answer» <p>equal root means discriminant is 0that is b²-4ac = 0so(6k)² - 4×9×4 = 036k² -144 = 0k² = 144/36k = √144/36k = + or - 12/6so k = -2 or +2</p> | |
| 855. |
L. The habitat of a crow is............. tree. |
| Answer» <p>agricultural lands and grasslands.</p> | |
| 856. |
15. The position of a particle moving along x-axisgiven "by χ = (-2t3 +3t2 + 5) m. Theacceleration of particle at the instant its velocitybecomes zero is |
| Answer» <p>x = -2t³+3t²+5 dx/dt = v = -6t²+6t = 0</p><p>so, the time when v is 0,6t(1-t) = 0 => t = 0 or 1 sec </p><p>and acceleration is dv/dt = -12t+6 </p><p>so, value of a at t = 0 is = 6m/s²and when t = 1 is t = -6m/s²</p> | |
| 857. |
The process that you saw in Activity 14.7 is used for purification of copper.A thin plate of pure copper and a thick rod of impure copper are used aselectrodes. Copper from impure rod is sought to be transfered to the thincopper plate. Which electrode should be attached to the positive terminalof the battery and why? |
| Answer» <p>thank you</p> | |
| 858. |
(a) Common salt b) Flour(c) Talcum pawutuIl. State if the following statements are True or False, Correct the false statement.1. The boiling point of a liquid and the condensation point of its vapours have the same il.numerical value2 Molecules are closely packed inagas3 Liquids have two free surfaces4. A pure substance is made up of only one kind of matterS. A known volume of any liquid poured into a container does not occupy the same volume. |
| Answer» <p>1. True. The statement remains true if we check the values at the same pressure.</p><p>2.False.The molecules of gas have weak forces of attraction between them. CORRECT Statement: Molecules are loosely packed in a gas.</p><p>3.False.Free surface means the surface which is in contact with air. Bubble has two free surfaces for example.Correct statement: Liquids have one free surface.</p><p>4. True</p> | |
| 859. |
increasing the temperature, resistance decreasesthen it is): |
| Answer» <p>Thermistor with this particular temperature behavior are commonlysemiconductors. In a semi-conductor, there is an energy gap between the (filled) valence and the (empty) conduction band. At zero temperature, no charges are in the conduction band and the resistance should be infinite as the system behaves basically like an insulator.</p><p>If you turn on the temperature, some electrons will start to occupy the conduction band and thus contribute to conduction, lowering the resistivity.</p> | |
| 860. |
What is conservation of water? |
| Answer» <p>Water conservation includes all the policies, strategies and activities to sustainably manage the natural resource of fresh water, to protect the hydrosphere, and to meet the current and future human demand. Population, household size, and growth and affluence all affect how much water is used. </p> | |
| 861. |
7. Which of the following is not a greenhouse gas |
| Answer» <p>Nitrogen is not a Greenhouse gas</p> <p>helium is not in a green house</p> | |
| 862. |
1) Write down Sunita Williams experiences in space. |
| Answer» <p>she feel proud because she is indians lady & she went space by nasa</p> <p>she feel proud because she is Indians lady & she went space by NASA </p> | |
| 863. |
Let the resistance of an electrical component remains constant whilethe potential difference across the two ends of the component decreto half of its former value. What change will occur in the current throughases |
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| 864. |
-12 - 5 %2B 68 |
| Answer» <p>51 is the right answer </p> <p>51 is the correct answer of the given question</p> <p>51 is the answer of the following</p> <p>51 is the correct answer </p> <p>51 correct answer of the following</p> <p>51 is the correct answer of the given question.</p> <p>51 is the following question answer. </p> <p>51 is correct answer of following question </p> <p>(68 - 5) - 12=63-12=51 is the answer of your following question.</p> <p>51 is the correct answer </p> <p>51 is the correct answer </p> <p>51 is the right answer</p> <p>51 is correct answer</p> <p>51 is correct answer</p> | |
| 865. |
1. All living beings procure energy from food. Name the three life processes which help themdo this. |
| Answer» <p>kiranajanya samyogakriya</p> | |
| 866. |
44 \times 98 |
| Answer» <p>44*98 = 4312 is the correct answer</p> | |
| 867. |
. Which of the following phenomenon happens due to the revolution of Earth around the Sun?(a) Seasons(c) Days(b) Years(d) Months |
| Answer» <p>a) seasonas revolution of earth around the sun cause variation of distance between them which leads to have different season</p> <p>how</p> <p>15years 4 months 8 days</p> <p>no worries on Duty your email address and phone numbers by</p> | |
| 868. |
What do you understand by work. State the dimensions and units of work.What do you understand by pitch.. |
| Answer» <p>Workis force acting through distance: W = F ×dFrom Newton's second law, F = M × a, where M is mass and a is acceleration. </p> | |
| 869. |
Who is the founder of Vijayanagar1 hivanagar.Vijayanagar Kingdom? |
| Answer» <p>The founder of vijayanagar kingdom is bukka raya1</p> <p>vijyalaya is the founder of Vijayanagar</p> <p>bukka raya 1 is the founder of vijalayanagar</p> <p>bukka raya1 is the founder of vijaynagar</p> | |
| 870. |
Howisarainbowformed? |
| Answer» <p>Ans :- Arainbowis a meteorological phenomenon that is caused by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky. It takes theformof a multicoloured circular arc.Rainbowscaused by sunlight always appear in the section of sky directly opposite the sun.</p> | |
| 871. |
a) How rainbow is formed? |
| Answer» <p>Arainbowis a meteorological phenomenon that is caused by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky. </p><p>It takes theformof a multicoloured circular arc.</p><p>Rainbowscaused by sunlight always appear in the section of sky directly opposite the sun.</p> <p>is it so ?</p> | |
| 872. |
Degree of freedom. |
| Answer» <p>Degrees of Freedom</p><p>The number of degrees of freedom of a dynamical system is defined as the total number of co-ordinates or independent variables required to describe the position and configuration of the system.</p> | |
| 873. |
why only plants can produce food |
| Answer» <p>Plants photosynthesise which means they make their own food through sunlight to drive chemical reactions to produce sugars. Plants are producers which means animals are consumers, animals can’t make their own food because they lack chlorophyll and they have no chloroplasts in their cells like plants do. Plants use these essential things to make food and energy.</p><p>hit like if you find it useful</p> | |
| 874. |
o Plants havesissura? Namehowtheremany |
| Answer» <p>three tissue is present on sunglr plant</p> <p>there are three types of tissues ....that...are 1)epithilial 2) ground tissue...and 3)vascular tissue</p> <p>there are three types of tissues these are -1. epithilial tissue2. ground tissue and3. vascular tissue</p> <p>planet have three type of tissue</p> <p>three tissue are present on plant_epithilialgroundvascular tissue</p> <p>three tissue are present on plant they areepithelialgroundvasucular tissue</p> | |
| 875. |
Find the value of m for which (2x-1) is a factor of(8x4 + 4r3-16x2 +10x+m). |
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| 876. |
Write the names of four flowers and four trees in the space providedFlowersTrees |
| Answer» <p>flowers-rose, tulips, marigold, mogratrees-banyan,peepal,mango,ashoka</p> | |
| 877. |
1. The ratio of the angular speed of the minute hand of a clock to that of its hour hand is)24:1d) 12:1b)60:1lang a horizontal curve of radius 20 m and the coefficient of frictioa) 3600: 1 |
| Answer» <p>The minute hand of a clock covers 360 deg in 60 min or 6 deg/min.</p><p>The hour hand of a clock covers 30 deg in 60 min or 0.5 deg/min.The ratio of the angular speed of the minute to the hour hand = 6/0.5 = 12:1</p> | |
| 878. |
give two examples each of modes of transport used on land, water and air. |
| Answer» <p>Land transport :Buses and Train. Water transport:Ship and Boat. Air transport :Helicopter and Aeroplane. </p> <p>Land transport :Buses and Train. Water transport: Ship and Boat. Air transport :Helicopter and plane. </p> | |
| 879. |
Describe how transpiration helps in thetransport of water in a plant. |
| Answer» <p>Transpirationis the process whichhelpsthe plantin many ways. *Transpirationresults in transpirationpull which thereby increase the rate of absorption ofwateralong with minerals from the soil through roots. *Transpiration helps in transportationof absorbed minerals to all the parts of theplant.</p> <p>Thanks very much Sir</p> | |
| 880. |
Exercisers1. Match structures given in Column I with functions given in ColumnColumn IColumn II(1) Stomataii) Xylem(il) Root hairsliv) Phloenm(a) Absorption of water(b) Transpiration(c) Transport of food(d) Transport of water(e) Synthesis of carbohydrates |
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| 881. |
4. How does water help in the transport of nutrients in plants?5. How do underground animals at ff |
| Answer» <p>Just as animals,plantsalso contain vascular tissues (xylem), which transportswaterand minerals up from the roots to the leaves, and phloem, which transports sugar molecules, amino acids, and hormones both up and down through theplant.</p> | |
| 882. |
3. Name the law of chemical combination(a) which was given by Lavoisier.(b) which was given by Proust. |
| Answer» <p>the chemical combination (a) law of conservation of mass was given by Lavoisier.</p><p>(b) law of constant proportions was given by proust.</p> | |
| 883. |
15*(p*(text*((51*p)*(f*(r*(m*o)))))) |
| Answer» <p>= 51p-15p= 36p is the correct answer of the given question</p> <p>36p is the correct answer</p> <p>51p-15p gives 36p answer</p> <p>36p is the correct answer </p> <p>36p is the answer.....</p> <p>the answer of this question is 36p</p> <p>15p-51p=-36p it is the only and correct answer</p> <p>Substracting 15p from 51p= 51p - 15p= 36p</p><p>.°. Answer = 36p</p> <p>36p is the correct answer </p> <p>0 is the correct answer</p> | |
| 884. |
Give three differences between conductors and insulators. (In tabular form) |
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| 885. |
dimensiethe sameAreasthe dilisk ne et e. ShrtraFrom Eqwhat |
| Answer» <p>Thrust is defined as the force force acting perpendicularly on a surface.It's SI unit is Newton.</p><p>Pressure is defined as the thrust acting per unit area.Its SI unit is pascal.</p> | |
| 886. |
Copper Sulphate is also known as |
| Answer» <p>cupric sulphate. is the answer. </p> | |
| 887. |
Metais aCells that convert solar energy to electrical energy |
| Answer» <p> Cells that convert solar energy to electrical energy are photovoltaic cells</p> | |
| 888. |
34.i. Calculate the Equivalent mass of Sulphuric Acid |
| Answer» <p>Equivalent mass of H2SO4 = molar mass/VF</p><p>and VF for acids is no. of H+ ions donated by it..</p><p>Eq mass H2SO4 = 98/2 = 49gm</p> <p>good</p> | |
| 889. |
4----| टन अधि 61: 3. L Asromws e जज. व il I |
| Answer» <p>Ans :- Tissue is a group of cells that are similar in structure and are organized together to perform a specific task.</p> | |
| 890. |
Calculate the molar mass of the following() H,O (i) CO2 (i)CH4 |
| Answer» <p>thanks</p> | |
| 891. |
Q2. The property used in separating a mixture of two solids by winnowing isa) Difference in colourb) Difference in sizec) Difference in weightAttraction manat |
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| 892. |
hO |
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| 893. |
3. Balance the following equations:(a) CH, + 0, CO, + HO(b) Na, O + H,0 - NaOH(c) Ca(OH), + HCl - CaCl, + H2O(d) Na + HO NaOH + H2(e) Na + Cl, Naci |
| Answer» | |
| 894. |
6 HS, a toxic gas with rotten egg like smell is used for the qualitatte analysis. Ifthe solubility of H S in water at STP is 0.195 m, calculate Henry's law constant. |
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| 895. |
Animals which give birT Younlgome animals give birth to young ones.Observe these pictures and write the names of young ones. |
| Answer» <p>The younger ones of sheep in the figure is called as lamb.</p> | |
| 896. |
nteact estiosHS, a toxic gas with rotten egg like smell, is used fo the qualitative analysis. Ifthe solubility of H2S in water at STPis 0.195 m, calculate Henry's law constant. |
| Answer» | |
| 897. |
3. Which of the following is/are raw material(s) for photosynthesis?(a) Water(b) Water and carbon dioxide(c) Sunlight, water and carbon dioxide(d) Sunlight, chlorophyll, water and carbon dioxide |
| Answer» <p>the answer is D) because photosynthesis needs this all things</p> <p>Answer:b)Water and carbon dioxide</p><p>Explanation:</p><p>The raw materials of photosynthesis,waterandcarbon dioxide, enter the cells of the leaf, and the products of photosynthesis, sugar and oxygen, leave the leaf</p> <p>C is correct answer </p> <p>d is the correct answer</p> <p>the correct ans is C</p> | |
| 898. |
What factors are essential for photosynthesis to take place? |
| Answer» <p>Materials Needed for Photosynthesis</p><p>Chlorophyll. Chlorophyll, the pigment in plants that makes them green, is essential to the photosynthetic process. ...</p><p>Sunlight. The process cannot work without anenergyinput, and this comes from the sun. ...</p><p>Water. As any gardener knows, plants take inwaterfrom the ground through their roots. ...</p><p>Carbon Dioxide.</p> | |
| 899. |
Replication of DNA takes place during |
| Answer» <p>DuringMitosis,DNAisreplicated duringthe S phase (Synthesis phase) of Interphase. Interphase is basically the daily life cycle of the cell. Cells spend most of their life in Interphase before Mitosisoccurs(M phase).</p> | |
| 900. |
Replication of DNA takes place during ........................ |
| Answer» <p>DuringMitosis,DNAisreplicated duringthe S phase (Synthesis phase) of Interphase. Interphase is basically the daily life cycle of the cell. Cells spend most of their life in Interphase before Mitosisoccurs(M phase).</p> | |