This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The amount of gteam (at 100°c) required to raise the temperature of 200g ofwater from 60c to 100°c is |
| Answer» ASS of water MW= 0.2kgspecific HEAT of water sw =4.187 kJ/kglatent heat of water LW= 2257 kJ/kgms x LATENT heat = mwcwpw (Δt)ms X 2257 = 0.2 X 4.187(100-60)ms = 14.8 g | |
| 2. |
What is baggase??????? |
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Answer» the DRY PULPY residue left after the extraction of JUICE from SUGAR cane. |
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| 3. |
Write a para About sounds produced by humans |
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Answer» sound is produce by the voice box or the LARYNX in human . Two voice cords are stretched across the voice box. When lungs force air , vocal cord vibrate produce sound . When the local cords are tight and THIN. Hope it HELPS youFollow me I will FOLLOW you BACK |
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| 4. |
. NUMERICAL PROBLEMS 1. How does the force of gravitation betorce of gravitation between two objects change, when the distance betweenthem is reduced to half?| 1077 loe and that nf. the Sun is 1.99 % 1030 kg. The meanbiah |
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Answer» tion:The value BECOME 4 TIMES to it's original value I hope this will HELP you please FOLLOW me |
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| 5. |
A river is flowing from west to east at a speed of 5 meters per minute.a man on the south bank of the river capable of swimming at 10 metres per minute in still water wants to swim across the river in the shortest direction.He should swim in a direction? |
| Answer» EXPLANATION:direction=sin THETA = 30120 DEGREE with the RIVER FLOW | |
| 6. |
What is the dimension of magnetic force? |
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Answer» [M^1 L^0 T^-2 A-1]EXPLANATION: |
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| 7. |
The position of a particle changes with time as x=2t^2+3t+4 . The average velocity of particle in time interval form t =0to t=3s |
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| 8. |
a car moving with a constant speed of 10 minutes per second covers two rounds of circular track in 10 seconds find the radius of the circular track |
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Answer» this is the ANSWER of above QUESTION....MARK as BRAINLIESTS answer..... |
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| 9. |
Saw dust mixed in water cannot be separated by the sedimentation method |
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Answer» ighter than water. SEDIMENTATION : The process in which the INSOLUBLE, HEAVY solid PARTICLES SETTLE down on their own in a solution. But the mixture of sawdust and water are insoluble. ... So, sawdust can not be separated by the process of sedimentation. |
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| 10. |
Acceleration due to gravity 19.. 9. The acceleration due gravity is independent of ManD...,, of the body.10. Gravitational force between two objects becomes ............... if the mass of one object isdoubled. |
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Answer» 9.8m/s2 ANS of 910 ans MASS is the directly proportion to the masses of the OBJECT .if the mass of one object is double then the gravitational force will also get double |
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| 12. |
Who invented Hurricane lamp |
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Answer» ricane LAMP was invented by Ignacy Lukasiewicz .hope it's helpful and mark me as a BRAIN LIST... |
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| 13. |
a stationary shell explodes into two fragments having masses in the ratio 1 is to 2 the heavier fragment attains kinetic energy of hundred J. Kinetic energy released in explosion.. |
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Answer» 300JExplanation:DEAR STUDENT, Let mass of pieces are m1=m and m2=2mApplying conservation of MOMENTUM. m1v1=m2v2⇒mv1=2mv2⇒v1=2v2 Now, ⇒1/2m2(v2)2=100⇒1/2×2m×(v1/2)2=100⇒1/2m1(v1)2=100×12×4=200 JTotal KE = 300 JRegards |
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| 14. |
A small bead is fixed on a circular loop of radius R as shown in the figure below. The loop is rotating about YY' axis with constant angular acceleration 'a'. The loop startsfrom rest, then, the bead is in circular motion, then acceleration of the bead at instant |
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Answer» vyyikedrttg122347i90p |
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| 15. |
Saw dust mixed in water cannot be separated by the sublimation method why |
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Answer» because SAWDUST cannot be converted DIRECTLY into GAS. Filteration or DISTILLATION can be USED. |
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| 16. |
A 6 micro farad capacitor charged from 10v to 20v. increase in energy will be |
| Answer» TION:ENERGY =1/2cv² 1/2×6(400-100) 3×300 =900 J hope it HELP you | |
| 17. |
What is normal and anamolous dispersion |
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Answer» In between two absorption bands, the index always INCREASES toward shorter wavelengths. This is normal dispersion. ... This latter PHENOMENON is called “anomalous dispersion.” (or sometimes “RESONANT dispersion.”) There is a close relationship between the absorption versus wavelength and the index versus wavelength. |
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| 18. |
Saw dust mixed in water |
| Answer» TION:hjkkkkkfyuigjjo ghjkkl vhjkklpooljhgff vhjj | |
| 19. |
Given that; A = B = C. If A bar+B bar=C bar, then angle between A bar And C bar is theta 1 .If A bar+ B bar+C bar= 0, then the angle between A bar and C bar is theta 2. What is the relation between theta1 and theta2? |
| Answer» PLZZZ GIVE me brainliest ANS and plzzzz follow me | |
| 20. |
Why air stay on atmosphere? |
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Answer» rbs HARMFUL ultraviolet radiation from the sun, helps keep Earth's surface WARM via the greenhouse effect, and reduces temperature extremes between day and night. Yay ATMOSPHERE! It keeps Earth livable. So, thanks to GRAVITY, although some of Earth's atmosphere is escaping to space, most is staying here. |
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| 21. |
✋✋✋✋✋✋✋Solve this attachment Qno. 15 ❎ ❎ Don't spam ❎ ❎ |
| Answer» HOPE this helpsa=36u=18v=36using v²-u²=2aS36² - 18² = 2 * 36 * SS= (36²-18²)/(2*36)=18-9=9 it MUST be CORRECT ..!! | |
| 22. |
The area of a piece of cardboard irregular shape can be found by using a string and a scale. |
| Answer» FIND it's perimeter by USING both a string and a SCALE but area | |
| 23. |
What is alternating current |
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Answer» rnating CURRENT is an ELECTRIC current that REVERSES its DIRECTION many times a second at regular INTERVALS, typically used in power supplies. |
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| 24. |
a horizontal force F is applied to a block of mass M, which is in contact with another mass M2. If surfaces are frictionless force between the blocks is |
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Answer» acceleration of both BLOCK will be F/M1+M2force on m2by M1 is F×m2/M1+m2I HOPE this is helpful for you.....thanks |
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| 25. |
State the convection use for the measurement of physical quantity? |
| Answer» TION:In CGS SYSTEM, LENGTH =CM, mass=gram, time=seconds | |
| 26. |
If Earth completes one revolution in 24 hours, what is the angular displacement made by Earth in one hour. Express your answer in both radian and degree. |
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Answer» Pai/12 radianExplanation:ANGULAR displacement by Earth in ONE hour =pai/12 RADIAN |
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| 27. |
Best Physics book for ICSE Class 10 other than Concise Selina |
| Answer» SELINA is BEST you don't NEED any other BOOK! | |
| 28. |
a cheetah is the fastest land animal and achieve a peak velocity of 10km/h up to distances less than 500m if a cheetah spots its prey at a distance of 100m what is the minimum time it will take to get its prey |
| Answer» 1 Km/h will be the SPEED / VELOCITY | |
| 29. |
A force F = (6i – 8j +10) N produces acceleration of V2 ms 2 in a body. calculate the mass of thebody.(1) 10 kg(2) 8 kg(3) 12 kg(4) 9 kg |
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| 30. |
A body having velocity of 2 m/s has a KE of 1 J. Mass of the body is ------ |
| Answer» KINETIC energy:1/2 X MASS X velocitygiven kinetic energy=1joulevelocity of the body=2m/s | |
| 31. |
Why does the mixture of iodine and camphor separate by sublimation method |
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Answer» the mixture of iodine it helps in the VELOCITY to FIND the AXIS of the DISTANCE. . |
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| 32. |
Explain the concept of banking of road |
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Answer» this is the ANSWER of above question.mark as BRAINLIESTS answer... |
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| 33. |
Write the application of inertia. |
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Answer» Taking a Look at Inertia EXAMPLES. ONE's body movement to the side when a car makes a sharp turn. Tightening of seat BELTS in a car when it stops quickly. A BALL ROLLING down a hill will continue to roll unless friction or another force stops it. |
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| 34. |
About a para we hear sound through our ears |
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Answer» the best THINGS in 3 eusebius, and I will be in the morning, I will GET BACK on a MAP, you |
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| 35. |
explain, why is it difficult for a fire man tho hose, which ejects large amount of water at high velocity? |
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Answer» let is because WATER PRESSURE is so HIGH that's way it is difficult to hold it |
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| 36. |
Hello guys........ Which of the following IIT institutes have developed biosensor to detect kidney disorders?[A] IIT Bombay and IIT Indore[B] IIT Kanpur and IIT Bombay[C] IIT Indore and IIT Delhi[D] IIT Delhi and IIT Kanpur |
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| 37. |
A long conducting wire is placed along Y-axis and a current of 5 A is through it in positive Y-axis. A charged particle of charge +3.2 x 10 19 moving parallel to the conductor towards negative Y-axis with a speed o 5 x 104 m s Calculate the force exerted by the magnetic field of current charged particle. The perpendicular distance between charged particle and wire is 25 cm. |
| Answer» SORRY don't KNOW this QUESTION and ANSWERS | |
| 38. |
The disposal of waste produced in a nuclear power plant poses a big problem because it is:? |
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Answer» These are very RADIOACTIVE in NATURE |
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| 39. |
Which of the following IIT institutes have developed biosensor to detect kidney disorders? [A] IIT Bombay and IIT Indore[B] IIT Kanpur and IIT Bombay[C] IIT Indore and IIT Delhi[D] IIT Delhi and IIT Kanpur |
| Answer» CEXPLANATION: | |
| 40. |
Define 1 ampere and mention that which quantity has this unit? Class 9th |
| Answer» 1 ampere is the number of CHARGES passes in one sec.this is the UNIT of current.it's formula is ampere = coloumb/ TIME | |
| 41. |
Dimensional qt based on phisics cpass 11th solve this plzzzz |
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Answer» I thinkdensity= 0.4is the ANSWER.... |
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| 42. |
A body os moving from east to west in which direction the force of friction is acting |
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Answer» west to eastExplanation:BCOZ FORCE of friction ALWAYS opposes MOTION.... so the OPPOSITE direction will be the answer i. e. west to east |
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| 43. |
The weight of a particle at the centre of theEarth is |
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Answer» It's ZERO. Explanation:It WOULD be zero. The weight of an object is the MAXIMUM at the SURFACE of the earth. As you move the body closer to the center of the earth, the mass of the earth between the center of the earth and the body KEEPS decreasing. This causes the force acting from the center of the earth on the body to decrease. |
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| 44. |
Explain the action of the following secondary cell. (i) lead acid accumulator |
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Answer» this is the ANSWER of above question.mark as BRAINLIESTS answer |
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| 45. |
State and Explain Faraday’s laws of electrolysis. How are the laws verified experimentally? |
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Answer» 's laws can be summarized bym = QM/Fzm is the MASS of the substance liberated at an electrode in gramsQ is the total ELECTRIC charge passed through the substance in coulombsF = 96485.33289(59) C mol−1 is the FARADAY constantM is the molar mass of the substance in grams per molz is the valency number of ions of the substance (electrons transferred per ion)... |
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| 46. |
Can we draw ray diagrams for convex surfaces? |
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Answer» Step-by-Step Procedure for Drawing Ray DIAGRAMS. ... Once these incident rays strike the mirror, reflect them according to the two rules of reflection for convex mirrors. The ray that travels towards the focal point will reflect and travel PARALLEL to the principal axis. Use a straight edge to accurately draw its path.Convex mirrors have the property of DIVERGING rays of light. ... This is because the reflected ray of light always diverge from a convex mirror SURFACE. Hence the the divergent ray APPEARS to come from behind the convex surface. Hence form virtual image.Step-by-Step Procedure for Drawing Ray Diagrams•Pick a point on the top of the object and draw two incident rays TRAVELING towards the mirror. ...•Once these incident rays strike the mirror, reflect them according to the two rules of reflection for convex mirrors. ...•Locate and mark the image of the top of the object.Explanation:Hope this helps uh☺ |
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| 47. |
Question 73: Two different bodies are completely immersed in water and undergo the same loss in weight. Is it necessary that their weights in air should also be the same ? Explain. Lakhmir Singh Physics Class 9 |
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| 48. |
Question 31: The electrical resistivities of four materials P, Q, R and S are given below : Which material will you use for making : (a) heating element of electric iron (b) connecting wires of electric iron (c) covering of connecting wires ? Give reason for your choice in each case. Lakhmir Singh Physics Class 10 |
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| 49. |
Question 72: If two equal weights of unequal volumes are balanced in air, what will happen when they are completely dipped in water ? Why ? Lakhmir Singh Physics Class 9 |
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Answer» The body with the lesser volume will undergo less reduction in WEIGHT than the body with more volume.Explanation:When the bodies are immersed in water, they will displace the water equal to their VOLUMES. The buoyant force that will act on the bodies will be equal to the weight of the water DISPLACED. So the body with more volume will displace more water, its weight will be more therefore the buoyant force ACTING upwards on the body will be more. Therefore there will be greater reduction in the weight of the body with more MASS. Hope this helps. |
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| 50. |
Question 61: An elephant weighing 40,000 N stands on one foot of area 1000 cm2 whereas a girl weighing 400 N is standing on one ‘stiletto’ heel of area 1 cm2. Lakhmir Singh Physics Class 9 |
| Answer» QUESTION is INCOMPLETE PLEASE SAY what to FIND | |