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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.
| 401. |
1. A body slipping on a rough horizontal plane moves witha deceleration of 4.0 m/s2. What is the coefficient ofkinetic friction between the block and the plane ? |
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| 402. |
1. A body slipping on a rough horizontal plane moves witha deceleration of 4.0 m/s2. What is the coefficient ofkinetic friction between the block and the plane? |
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| 403. |
1. A body slipping on a rough horizontal plane moves witha deceleration of 4-0 m/s. What is the coefficient ofkinetic friction between the block and the plane ? |
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| 404. |
234. Who discovered the circulation of blood ?(a) Urey (b) Edward Jenner (c) William Harvey (d) J. Baired |
| Answer» <p>William Harvey discovered the circulation of blood</p> <p>thank u</p> | |
| 405. |
what is bio diversity |
| Answer» <p>Biodiversity is the variability among living organisms from all sources, including terrestrial, marine, and other aquatic ecosystems and the ecological complexes of which they are part; this includes diversity within species, between species, and of ecosystems.</p> <p>thank you </p> <p>it dissolves in soil</p> | |
| 406. |
p ( x ) = L x + m , x = - \frac { m } { l } |
| Answer» <p>p(-m/l) = l(-m/l) + m = -m + m = 0</p> | |
| 407. |
ऌि 4 * o1LtX, |
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| 408. |
3. Name the various components obtained from the fractional distillation of crude oil. |
| Answer» <p>It has a varied range of products depending on the boiling point. The top products are off gasses mainly comprising of C1, C2. Followed by LPG, naphtha (C5-C12), motor spirit, ATF, kerosene, ,diesel, HVGO, RCO. I have missed some, these are the major ones. Further this is send to VDU, where RCO is being processed and subsequently send to FCCU. Asphalt, bitumen, fuel oil, furnace oil, petroleum coke, turpentine oil, rubber processing oil, jute bumper oil.</p> | |
| 409. |
Which of the following grouptabiea) IAof elements will show highest reducing property in modern periodicb) VIIIAc) IBd) VIIIA |
| Answer» <p>IA group metals are most reducing in natureex ,- Li , Na </p><p>option A </p> | |
| 410. |
38.a) How metals reacts with Acid ? Give example.b) The atomic number of two elements A and B are 11 and 12 respectively .which elements exhibitshighest metallic property why ? Write the molecular formula of the compounds formed when theseelements combine with the element Z' having atomic number 8 |
| Answer» <p>When anacid reactswithmetal, a salt and hydrogen are produced:acid+metal→ salt + hydrogen An example: nitricacid+ calcium → calcium nitrate + hydrogen The salt that is produced depends upon whichacidand whichmetal react.</p> | |
| 411. |
Q.4 H2S acts only as reducing agent while SO2can act as both oxidizing as well as reducingagent |
| Answer» <p>The oxidation state of sulfur in H2S is -2 whereas in case of SO2 it is +4.The minimum and maximum oxidation state of sulfer is -2 and and +6.Thus for H2S it can only reduce or donate electron whereas in case of sulfurdioxide it can change its oxidation number either from +4 to-2(reduction) and +4 to+6 (oxidation)</p> | |
| 412. |
What is meant by the term cell division? Why is cell division necessary? |
| Answer» <p>the process by which new cells r formed is called as cell division . groth of body is determined by the multiplication of cell. after a cell mature , it stop incressing in size and divides itself to form two new cells , called as daughter cell. the processof repair and healing of wounds occur mainly due to the replacement of old cell by new cell</p> | |
| 413. |
What is the symbol of neutron? |
| Answer» <p>Neutron number, N = A-ZNeutron is composed of one up quark and 2 down quark.Commonly accepted symbols as per Baryon classification is n, n° implicating the net zero charge for a neutron.</p> | |
| 414. |
3.Below are names of some animals:(i) Cow(ii) Sheep(iii) Horse(iv) OxWhich of the above are sources of milk for human beings?(a) (i) and (iii)(b) (i) and (ii)(c) (ii) and (iii)(d) (iii) and (iv) |
| Answer» <p>Cow and Sheep are sources of milk for human beings.</p><p>Therefore,(b) is correct option </p> <p>(a) is the correct answre...</p> <p>cow and sheep are sources of milk then answer is b</p> <p>Correct answer is (b) </p> <p>Sources of milk for human being's arei) Cow andii) Sheep</p><p>Answer :- Option b) i) and ii) </p> <p>Cow and sheep milk sources</p> <p>i and ii is correct give like 👍👍👍👍👍👍👍👍👍👍</p> | |
| 415. |
f(x) = 2x^3 + 3x^2 - 11x + 6i) f(0) ii) f(1) iii) f(-1) |
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| 416. |
ercisDo you finef tnat all ring heings need the same kind of food? |
| Answer» <p>No, all living beings do not need the same kind of food. Some animals eat only plant products called as herbivores. Some animalseat only other animals. They are called carnivores. Some other animals eat both plants and animals called omnivores.</p> <p>tk u</p> | |
| 417. |
What kind of diet would you prefer for healthy eyes? |
| Answer» <p>foods which contain vitamin A like carrots, beetroot</p> | |
| 418. |
niually with a speed ol 1A constant force acting on a body of mass 3.0 kg changes its speed from 2.0 m sto 3.5 m s1 in 25 s. The direction of the motion of the bodyunchanged. What is the magnitude and direction of the force?5.6nsndicular forces N and N |
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| 419. |
II. Match the columnThe protection of soil from erosionand pollution.The contamination of soil byharmful products.Removal of top soil by wind and water.Dead and decaying organic matter.The breaking down of rocks due tonatural forces.a.l. Humusb.2. Conservationc.d.e.3. Weathering.4. Soil Pollution.5. Soil erosion. |
| Answer» <p>Match the columna - conservationb - soil pollutionc - soil erosiond - Humuse - weathering</p> | |
| 420. |
microbes in the soil get destroyed |
| Answer» <p>If all themicrobes in the soil get destroyed, then all thesoilrespiration andsoilnutrient cycling will be stopped. Thesoilloses its nutrients and hence the plants will notgetany nutrient from thesoil. And there will be no plants on Earth as they will notgetany nutrients and hence Earth will bedestroyed.</p> | |
| 421. |
What so we call molecules made up of atoms of different elements? |
| Answer» <p>compound</p> | |
| 422. |
9 A truck starts from rest and rolls down a hill with a constant acceleration. Ittravels a distance of 400 m in 20 second. Find the force acting on it if it's mass is7 tones (Hint - 1 tone 1000 kg). |
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| 423. |
A projectile is fired at 300 with momentump, neglecting friction, the change in kineticenergy, when it returns back to the groundwill be :-(1) zero(2) 30%(3) 60 %(4) 100% |
| Answer» <p>answer is 0because when it will reach the ground it will aquire same kinetic energy when it was at starting</p> | |
| 424. |
What do you mean by Obesity? |
| Answer» <p>Obesity is a condition where a person has accumulated so much body fat that it might have a negative effect on their health. If a person's bodyweight is at least 20% higher than it should be, he or she is considered obese </p> | |
| 425. |
Mention the change in human red blood cells when they are placed in hypotonic salt/ sugarsolution |
| Answer» <p>The concentration of solutes is greater inside and lesser outside in the hypotonic solution. Blood cells grow in size when they are placed in hypotonic solution.</p> | |
| 426. |
Why is the distance between stars eaxpressed in ligat years)understand by the statemenmt that a star Is el Lght yearsthe Earth? |
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| 427. |
Nature of path when a body moves with uniform speed, but motion is accelerated. |
| Answer» <p>Circular path</p> <p>It's an accelerated motion of action.as the body continue acceleration thus it's an accelerated motion.</p> | |
| 428. |
What do you understand by the rectilinear propagation of light? |
| Answer» <p>Rectilinear Propagation of Light is the tendency of light to travel in straight Lines. In a homogenous transparent medium light travels in a straight line and this is known as rectilinear propagation of light.</p> | |
| 429. |
Explain rectilinear propagation of light with an experiment. |
| Answer» <p>1</p> <p>2</p> <p>3</p> <p>thanks</p> | |
| 430. |
Explain the properties of a magnet with a suitable experiment. |
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| 431. |
U238 के रेडियोधर्मी क्षय में, उत्सर्जित ,He* कणोंका केंद्र उस समय पर बचे हुए .Th234 के केंद्र से12 x 10-13 m की दूरी पर है । हीलियम परमाणु परबल है(A) 300 N (B) 258 N(C) 222N D ) 288 N |
| Answer» <p>original answer is 288N</p> <p>option D is correct answer.</p> <p>300 is correct answer</p> <p>option d ) 288 is answer</p> | |
| 432. |
Explain monohybrid experiment with an example, which law of inheritance can we understandExplain.(AS1) |
| Answer» <p>1</p> <p>2</p> <p>3</p> <p>4</p> <p>5</p> <p>6</p> <p>7</p> <p> 8</p> <p>9</p> | |
| 433. |
I had thus made myself alamp. |
| Answer» <p>Make of yourself a light” are said to be the last words of ... I would imagine that he was pointing to the fact that the ... And this is my call to action: Instead of blaming</p> | |
| 434. |
rocoofthe35. A body in free fall attains 'terminal velocity' when the air drag and the gravitational force are equal inmagnitude. For a body of mass 60 kg at g-10 ms the air drag is(A) 300 N(B)-300 N(C) -600 N(D) 600 N |
| Answer» <p>F=-mg as its falling downhence F=-60*10=-600N</p> | |
| 435. |
t. God gave man a mind to think and utilise to his own advantage. Man inventedve made our life easy and comfortable. Match the followingand know the inventors who used their intelligence to make our lite comfortable1. Electric Lamp2. Clock (Mechanical)3. Telephonea. Wright Brothersb. Karl BenzC. I,Hsing and Liang Ling Tsand. John Logie Bairde. Lewis E Watermanf. Thomas Alva Edisong Alexander Graham Bell4. Aeroplane5. Petrol Car6. Television7. Fountain Pen |
| Answer» <p>1 - f2 - c3 - g4 - a5 - b6 - d7 - e</p> | |
| 436. |
III. God gave man a mindmany things that have madeto think and utilise to his own advantage. Man inventedour life easy and comfortable. Match the followinsutilise toanknow the inventors who used their intelligence to make our life comfortable.1. Electric Lamp2. Clock (Mechanical)3. Telephonea. Wright Brothersb. Karl Benzc.I-Hsing and Liang Ling Tsan4. Aeroplaned. John Logie Bairde. Lewis E Waterman5. Petrol Carf.Thomas Alva Edison6. Televisiong. Alexander Graham Bell7. Fountain Pen |
| Answer» <p>1. f2. c3. g4. a5. b6. d7. e</p> | |
| 437. |
what is electric current. |
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| 438. |
What is electric current? |
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| 439. |
. Give reasons:-Plastic is used to cover electric wires.Silver and gold is used to make jewellery.A nail sinks in water and a leaf floats or water.Cooking vessels are made up of metals but handles are made up of wood.Metals lose their shine over a period of time. |
| Answer» <p>1. Plastic helps dissipate the heat as well as prevent the wire from getting too hot and causing a fire. Plastic does a great job of insulating the conductor used in electrical systems. Without plastic, hot and neutral wires cannot be run in the same conductor or same wire.</p> <p>2. 2. Metals like gold, silver, platinum etc. have lustre, and these are less reactive, these metals cannot react with air water and acids and these metals are malleable and ductile. Due to these properties, these metals are called noble metals and they are used in jewellers.</p> <p>3. The density of snail is larger than the density of water and hence it sinks. While the density of leaf is much less than the density of water and hence it floats.</p> <p>4. Metals are good conductors of heat. When the vessel is heated it conducts heat and if the handle is made of metal, it will cause burns. So, the vessels are made of metal while the handle is wooden.</p> <p>5. Metals react with moist air and get oxidised and they lose their shining.</p> | |
| 440. |
24. Figure shows electric field lines due to two charges4, and q2. Find out sign of charges |
| Answer» <p>as there is repulsion charge is of the same polarity hence either rboth are positive or both negative.</p> | |
| 441. |
2. What is the utility of tissues inmulti-cellular organisms?6.2 Plant Tissues6.2.1 MERISTEMATIC TISSUEJar 1Jar 2 |
| Answer» <p>Ans :- A tissue is a group of similar cells that together serve a specific function in the body. The word tissue comes from the word “tisser”, meaning something woven, just like the cells are “woven” together in clumps and are made of layers.</p> <p>Thank you so much </p> | |
| 442. |
Example 9.7 A girl of mass 40 kg jumpswith a horizontal velocity of 5 m s ontoa stationary cart with frictionlesswheels. The mass of the cart is 3 kg.What is her velocity as the cart startsmoving? Assume that there is noexternal unbalanced force working inthe horizontal direction.Solution: |
| Answer» <p> no external force => momentum is constant.</p><p> momentum of girl = 40 * 5 = 200 kg-m/sec momentum of girl and cart = total momentum of the girl + momentum of cart = 200 + 0 = 200 kg m/sec speed = 200 / (40 + 3) = 4.65 m/sec</p> | |
| 443. |
State the laws of refraction of light. Explain the term 'absolute refractive imedium' and write an expression to relate it with the speed of light in vacuumndex of a |
| Answer» <p>The following are the laws of refraction:</p><p>1) The incident ray , the refracted ray and the normal to the intergace of two media at the point of incidence , all lie in the same plane.</p><p>2.) The ratio of sine of angle of incidence to the sine of angle of refraction is constant , for the light of a given colour and for the given pair of media. This law is also known as Snell's law of refraction</p> | |
| 444. |
22. Moment of a force of magnitude 20 N acting along positive x direction at point (3m, 0, 0) about the point (0, 2, 0)(in Nm) is |
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| 445. |
How will you separate good and healthy seeds from damaged ones? |
| Answer» <p>we will add water in seeds damaged seeds will float at the top layer of water</p> <p>two separate healthy seeds from an healthytake a glass bowl and fill it up to three fourth with water put a handful of Gram seeds in it leave it for one for you will observe that some seeds float on the water and then our hold and light these are an healthy seeds the seeds which settle down at the bottom are healthy and good for sowing</p> | |
| 446. |
What do you mean by CoRT?(A) Cognitive Research Test(C) Cognitive Research Tool(B) Cognitive Research TrustD) Cognitive Research Techniqu |
| Answer» <p>CORT stands for Cognitive Research Trust</p> <p>cognitive research trust</p> | |
| 447. |
eyesight, thick skin, ability to canmselves from predators, etc.rciseslaceame the elements that determine the weather ofVhen are the maximum and minlmunuring the day?ill in the blanks:mum temperatures likely toum) The average weather taken over a long time isND ADAPTATIONS OF ANIMALS TO CLUMATE |
| Answer» <p>the average weather taken over a long time is called climate</p> | |
| 448. |
Prepare similar table of information about various diseases likeenteritis, malaria, plague, AIDS. |
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| 449. |
5. The volume of a piece of metal is 125 cm. If thedensity of the metal is 2.7 gcm , find the massof metal. |
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| 450. |
A right triangle ABC with sides 5 cm, 12 cm and 13 cm is revolved about the side 12 cm.Find the volume of the solid so obtained1. |
| Answer» <p>Let hypotenuse =13cmgiven triangle revolves around 12cmradius=5cm height=12cmvolume=1/3 π×r^2×Hvolume=1/3×π×5×5×12vol.=100πcm ^3please like my answer if you find it useful </p> | |