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. |
An object having acceleration of 10 metre second per square starting from rest find distance travelled by an object in 5 seconds |
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Answer» Hi friend |
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| 2. |
Determine length width of horn flare angle in pyramidal horn which e-plane aperture is 10 lambda |
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Answer» As a RESULT HORN ANTENNAS have WIDER beamwidths when COMPARED to similar-sized plane-wave .. |
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| 3. |
Why is spoiling of food considered a chemical change?A) In it the food changes from one chemical substance to another B) It is not possible to get original food from spoiled food C) It is a permanent change D) All the above |
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| 4. |
The melting of gold is a physical change becauseA) melted gold is still gold but in different form B) no new substance is formed in it C) on cooling melted gold returns back to its original state D) All the above |
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| 5. |
Hi friend solve this question |
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Answer» HELLO FRIEND.....⭐⭐⭐ F = mv/t v = s/t = 0.5m/5s = 0.1 m/s F = 10^(-2) × 0.1 ÷ 10 F = 1/100 × 1/10 × 1/10 F = 1/10000 = 10^(-4) Newton |
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| 6. |
Consider the following changes and select the option that can be used to classify these. stretching of rubber band cooking of food heating of milk stretching of spring burning of paperA) periodic and non-periodic change B) physical and chemical change C) expansion and contraction D) None of these |
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| 7. |
If Shyam teaches a boy 4hrs and ram teaches a boy 5hrs so who has more work done |
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| 8. |
Constructing of houses how does it effect evironment |
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Answer» The HOUSE is MADE up of bricks and bricks are baked at high temp. which release large amount of smoke in environment |
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| 9. |
Full explanation on Alluvial soil |
| Answer» ALLUVIAL soil is the soil which is FOUND in the EASTERN coastal PLAINS of India. | |
| 10. |
Physical changes are usuallyA) periodic changes B) a change in state of matter C) fast changes D) a change in composition |
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Answer» Physical changes are changed in the STATE of matter. |
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| 11. |
Which of the following is a chemical change to a piece of paper?A) Colouring B) Burning C) Folding D) Tearing |
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| 12. |
During which of the following changes a new substance is formed?A) Cooking B) Melting C) Freezing D) Crushing |
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| 13. |
Choose the correct alternative to complete the given analogy. Change in period in a school: Periodic change::________: Non periodic changeA) Heart beating B) Formation of day and night C) Forest fire D) Change in phases of moon |
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Answer» FOREST FIRE : non period change. Mostly unpredictable incidents come under non periodic change.we cannot predict forest fire so it is non periodic. More over it won't happen at regular interval of time.So it is non periodic change. |
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| 14. |
Q. Two Identical coins having similar charges are placed 4.5 m apart on a table. Force of repulsion between them is 49/9 N. The value of charge on each coin is :-1) 100 mC2) 200 mC3) 300 mC4) 35√10 C |
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Answer» LET charge on each COIN is q GIVEN, Force = 49/9 N Speration between charges , r = 4.5m ∵ Force = KQq/r² [ from Coulombs law] ∴ 49/9 = 9 × 10⁹ × q × q/(4.5)² ⇒ 49/9 = 9 × 10⁹ × q²/(4.5)² ⇒ 49 × (4.5)² × 10⁻⁹/9 × 9 = q² ⇒(7)² × (4.5)² × 10 × 10⁻¹⁰/(9)² = q² Taking square root both sides, ⇒ 7 × 4.5 × √10/9 × 10⁻⁵ = q ⇒ 3.5√10 × 10⁻⁵ = q ⇒ 35√10 × 10⁻⁶ = q Hence, charge on each coin is 35√10 μC It seems you did mistake in typing. Answer should be 35√10 μC , CORRECT Option is (4) 35√10 μC |
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| 15. |
According to bis classification the range of silt sized particles is |
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Answer» Hey MATE here's your ANSWER..... |
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| 16. |
According to the base method of measurement the order of the sequence is |
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Answer» PLZ GIVE the MEASUREMENT |
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| 17. |
What are the calorific value of petrol,diesel,biogas,butane,methane,ethanol,kerosene,cow dung cake,coal,wood and LPG in kj/kg? |
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| 18. |
Which is an example of chemical change?A) Water freezes B) Wood is cut C) Bread is baked D) Wire is bent |
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Answer» A) REVERSIBLE |
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| 19. |
Artificial ripening of fruit is aA) reversible change B) periodic change C) irreversible change D) fast change |
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| 20. |
Find the odd one out.A) crushing B) pulling C) burning D) tearing |
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Answer» Hey... |
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| 21. |
2 and 4 plssss ansssssssss |
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Answer» This is the answer |
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| 23. |
Point charges 30C, - 20C, and 10C are located at (-1,0,2),(0,0,0) and (1,5,-1) respectively. The total electric flux leaving cube of side 6 m centered at the origin is |
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Answer» The Cube is centered at the Origin(0,0,0) so, |
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| 24. |
Carnot engine efficiency can be increased more effectively by |
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| 25. |
Which of the following is an example of chemical change?A) Filling up a balloon with hot air. B) Taking a glass of water and freezing it by placing it in the freezer. C) A plant collecting sunlight and turning it into food. D) None of these |
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Answer» HEY... The CORRECT ANSWER is C |
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| 26. |
Is it Snell law and law of refraction are same please explain me |
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Answer» For REFRACTION of light,RATIO of sin i/sin R is constant for a pair of MEDIUM,which is law of refraction as well as Snell law. |
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| 27. |
Q. Two Identical coins having similar charges are placed 4.5 m apart on a table. Force of repulsion between them is 49/9 N. The value of charge on each coin is :-1) 100 mC2) 200 mC3) 300 mC4) 35√10 C[Explain properly with a solution]Plzz answer it aand fast |
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Answer» Let CHARGE on each coin is Q |
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| 28. |
Calculate the electric field strength required just to support a water drop of mass 10^7kg and having a charge 1.6*x10^-19c |
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Answer» Let q = 1.6 x 10-19 C and m = 1 x 10-7 kg . Also g = 10 m/s2 . |
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| 29. |
What happens to the metals on heating:A) They expand B) They contract C) They remains unaffected D) None of these |
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Answer» Heya, |
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| 30. |
How can we find the sum of forces if they are perpendicular to each other? |
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Answer» Use the formula F1^2+F2^2+2F1F2costheta |
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| 31. |
What isnormal reaction force? |
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Answer» The normal REACTION forceThe sum of forces in the body equals the external force acted on it. ... The force on the body due to GRAVITY causes it to exert a force on the ground and the normal reaction acts in the OPPOSITE direction causing the RESULTANT force on the body to be zero. |
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| 32. |
30bulbs connected in series if one bulb is fused what is the amount of light |
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Answer» No BULB will GLOW...as TGE CONNECTION was in SERIES |
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| 33. |
Bullet from a gun is which type of energy |
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Answer» Heyyy |
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| 34. |
By which chatacterization technique we determine the particle size in nanotechnolgy |
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Answer» Hffhutdcjkofdrhjgjitdfv766666 |
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| 35. |
I don't understand this problem can anyone help me |
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Answer» This is an EXAMPLE for conversion of one FORM of UNIT into another |
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| 36. |
Choose the correct alternative to complete the given analogy. Physical change : Boiling : : Chemical change: _________A) Melting B) Burning C) Condensing D) Evaporating |
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Answer» Hey there !!.. |
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| 37. |
What is difference between making of furniture from wood and burning of wood?A) First is irreversible and second is reversible change B) First is physical and second is chemical change C) First is fast and second is slow change D) First is periodic and second is non-periodic change |
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Answer» IT IS A BCOZ SEE |
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| 38. |
Which of the following is a reversible change?A) Ripening of the fruit B) Melting of ice C) Burning of paper D) Converting wood into saw dust |
| Answer» MELTING of ICE I HOPE it HELPS you | |
| 39. |
A train of length l moves with a constant speed v.a person at the back of the train fires a bullet at time t=0 towards a target which is at a distance of d from the front of the train ( on the same direction of the motion ) another person at yhe front of the train fires another bullet at time t=t towards the same target .both bullets reach the target at the same time .assuming the speed if the bullet is same.what is thwe length of the train? |
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Answer» We may ASSUME that, when the person at the front of the TRAIN FIRES the bullet |
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| 40. |
A stone dropped from top of tower of height 300 m high splashes into water off. near base of our when is the splash pad at the top given speed of sound in air is 340 m per second |
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Answer» Height of the tower, s = 300 m |
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| 41. |
Condensation is a physical change, why?A) Vapour turns into liquid B) No heat is required C) It happens automatically D) No new substance is formed |
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Answer» Hey mate !! Here's the ANSWER !! Condensation is a physical CHANGE. This is because of the following reasons: 1. No new products are formed. Only change of state happens. 2. It is a reversible change. 3. Products are formed are same as the reactants. Hence OPTIONS ( a ) and ( d ) are correct. To be more precise ( d ) is correct. Hope my answer helped you !! Cheers !! |
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| 42. |
Cooking of an egg in boiling water containing salt is aA) permanent change B) temporary change C) irreversible change D) Both (a) and (c) |
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Answer» I THINK so its option d because that can't be reversed and ALSO it's a PERMANENT change |
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| 43. |
a truck running along a straight line increases its speed uniformly from 30m/s to 60m/s over a time interval 1 min . what is the distance travelled during this interval? |
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Answer» V=60m/s |
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| 44. |
Integration of dx/(a^2-b^2)^1/2 |
| Answer» 0 | |
| 45. |
A round steel bar of overall length 40cm consists of two equal portion of 20cm each habing |
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Answer» That's your ANSWER....... |
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| 46. |
Area wise which is the smallest and which is the largest steel state |
| Answer» MEANS WHT is ur QUE PLZ ask agi.n | |
| 47. |
Heating of wax in a pan is aA) reversible change B) irreversible change C) permanent change D) None of these |
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Answer» HEATING wax in a PAN is a reversible change. HOPE this helps U... |
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| 48. |
Select the one that represents a periodic change.A) Occurrence of tides B) Opening of a morning glory flower C) Both the above D) None of these |
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| 49. |
Which type of change takes place when a rolled roti is baked on taw a?A) physical change B) permanent change C) periodic change D) None of these |
| Answer» PERMANENT CHANGE.... | |
| 50. |
A car moving with a velocity of 20 m per second. the brakes are applied to retrd it's at the rate of 2 metre per second square.what will be its velocity after 5 seconds of applying thebreaks.( with process please ) |
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Answer» We have, |
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