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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. |
Please give the answer of the match the following |
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Answer» 1 g 2f 3b 4h 5c 6d 7e 8a Explanation: |
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| 2. |
A man walks with velocity v1 for half the time and with velocity v2 for theremaining half. Motion is in straight line in one directiorl Find average velocity and average speed. |
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Answer» As motion is in straight LINE..... |
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| 4. |
Mention the physical states of the reactants and products of the following chemical reactions andbalance the equatins. (AS)(a) CH,.. → C,H,OH + CO2(b) NH, +Cl, → N, + NH,CI(C) Na+H2O → NaOH + +H. |
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Answer» Answer: ANSWER a)C 6
12
O 6
⟶2C 2
H 5
OH+2CO 2
This reaction is known as the reaction alcoholic fermentation of glucose. b)4Fe+3O 2
⟶2Fe 2
O 3
In this reaction iron REACT with oxygen molecule to form iron oxide. c)NH 3
+Cl 2
⟶N 2
H 4
+NH 4
Cl 8NH 3
+3Cl 2
⟶N−2+6NH 4
Cl In this reaction 8 molecule of AMMONIA reacts with three molecule of chlorine to from nitrogen and SIX molecule of ammonium chloride. d)Na+H 2
O⟶NaOH+H 2
In this reaction sodium react with water molecule to form sodium hydroxide and hydrogen gas. my friendhope it will HELP u |
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| 5. |
force can change the state of motion of objective give an example for only three of the following change in the state of motion of objective |
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Answer» Explanation: You have learnt how objects move. You also know that a moving object like a ball rolling on the ground slows down. Sometimes it may change its DIRECTION of motion. It is also POSSIBLE that the ball may slow down and also change its direction. what makes an object to slow down or go faster, or change its direction of motion? Let us RECALL some of our EVERYDAY experiences. What do you do to make a football move? What do you do to make a moving ball move faster? How does a goalkeeper stop a ball? How do fielders stop a ball hit by a batsman? A hockey player changes the direction of the moving ball with a flick of the STICK. In all these situations the ball is either made to move faster or slower or its direction of motion is changed. |
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| 6. |
the refractive index of water is 4/3 and speed of light in air is 3×10^8.find speed of light in the water. |
Answer» GivEn:
To find:
SoluTion:Refractive Index is the measure of bending of light when it passes from one medium to ANOTHER medium. It is the ratio of speed of light (c) in empty space or a VACCUM to speed of light (V) in medium. Here, ★ Given Medium (v) is water. |
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| 7. |
a car accelerates uniformly from 18 km/h to 36km/h in 10 sec. find the acceleration and the distance covered by the car in that time. |
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Answer» Answer: 1.8m/s Explanation:ACCELERATION =v2-v1/Δt v2=36 v1=18 Δt=10 accelleration=1.8m/s
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| 8. |
Y= a sin 2piV÷k×t what is the Dimension of K? |
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Answer» what is this MEANING........ |
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| 9. |
Write any opplication to specific heat? |
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Answer» Answer: Substances having a SMALL specific heat capacity, are very useful as MATERIAL in cooking instruments such as frying pans, pots, kettles and so on, because, they can be QUICKLY heated up even when small amount OH heat is supplied. Hope you understand this Mark me as BRAINLIEST |
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| 11. |
An object is moving with acceleration a1 for time t1 and next distane with a2 with time t2 and next with a3 time t3and find the change in velocity |
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Answer» hello Explanation: |
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| 12. |
Wht is direct current?? |
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Answer» DIRECT CURRENT (DC) is the unidirectional flow or movement of electric CHARGE carriers (which are usually electrons). |
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| 13. |
Q.24Rank the launch angles for the five paths in the figure below with respect to time of flight, from theshortest time of flight to the longest -(A) 15°, 30°, 45°, 60°, 75°(B) 75°, 60°, 45°, 30°, 15°(C) 15°, 75°, 30°, 60°, 45°(D) 30°, 60°, 15°, 45°, 75°y(m)150Vi=50 m/s |
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| 14. |
A ball of 200 g mass is moved with 20 m/s, and decreases to 10 m/s in 5 seconds due to air friction. So, force of friction due to air is |
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| 15. |
Definition of Waste heat अपशिष्ट गर्मी की परिभाषा |
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Answer» Answer: the heat which is UTILISED in the evaporation is know as latent heat of fusion Explanation: |
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| 16. |
Explain lateral displacement using diagram |
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Answer» The LATERAL displacement or lateral shift is the minimum GAP between the EMERGENT RAY and incident ray. In the diagram below incident ray is shown by the DOTTED line and the emergent ray is shown by the solid line. |
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| 17. |
Please solve this numerical.... |
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| 18. |
Which is an ideal liquid for a barometer RD of liquid is given |
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Answer» mercury Explanation: HOPE it helps Mark me BRAINLIEST |
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| 19. |
Wht is electromagnetic induction? |
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Answer» Electromagnetic Induction is a CURRENT PRODUCED because of VOLTAGE production DUE to a changing magnetic field. |
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| 21. |
Difference in arrangement of particles in soilds, liquids and gases through diagram |
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Answer» HOPE helps |
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| 22. |
Volume of water tank is 750 litreLength 150cm,Breadth 50cmFind the height of the tank ! |
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Answer» 100 cm Explanation: Volume of water TANK = 750 litre 1 litre = 1000cm³ so, volume of tank = 750×1000 = 7,50,000 cm³ Length of tank = 150 cm Breadth of tank = 50 cm Height of tank = h cm Volume of cuboid = ( L × B × H ) so, 150cm× 50cm × h cm = 7,50,000 =) h = 7,50,000/75,000 =) h = 100 cm So the answer is Height = 100 cm |
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| 23. |
Ahoy!!_______________________if the position of a particle at any instant t is given by x = t^3, find the acceleration of the particle.at t=2sec |
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Answer» Answer: 12 m/ sec² Explanation: by differentiation , X = t³ velocity = 3t² ACCELERATION= 6t so acceleration at t = 2 second is a= 6×2 a= 12m /sec² hope it HELPS you plz MARK it as brainliest! |
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| 24. |
A ship 'A' steams down north at a speed of 8 kmph. and ship B due west at a speed of 6 kmph. The velocity of A w. r. t B is. |
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Answer» Answer: 2km/h Explanation: V of A wrt B is = VA-VB=8-6=2 km/h I think sooo |
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| 25. |
an object of mass m is at point a ( highest point ) on a vertical circle of radius R . IF IT is moved to B ( LOWEST POINT ) along ACB , ( C being the horizontal point ) work done by gravity is ) |
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Answer» MARK me as brainlist thank me follow me if my answer is CORRECT |
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| 26. |
If mod vector a × vector b|=ab then find the a |
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| 27. |
Define electric power |
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Answer» Explanation: Electric POWER is the rate, per unit TIME, at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second. Electric power is usually produced by electric GENERATORS, but can ALSO be supplied by sources such as electric batteries.Electric power is the rate, per unit time, at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second. Electric power is usually produced by electric generators, but can also be supplied by sources such as electric batteries. |
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| 28. |
Find the angle between the vector 4i+3j-4k and 3i +4k+6j |
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Answer» Answer: 90 degrees Explanation: (root 16+9+16 )(root 9+16+36) cos theeta =4*3+3*4-4*6 cos theeta=12+12-24/(root 16+9+16 )(root 9+16+36) cos theeta =0 thus theeta =90 |
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| 29. |
You find your mass to be 42 kg on a weighing machine, is your mass more or less than 42 kg ??? |
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| 30. |
When a body is projected upwards, which equation holds good? v = u - gt v = u - at v = u + at v = u + gt |
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Answer» Whenever a BODY is under free fall, there is two possibilities: It is moving upwards or falling downwards. So, here we are asked about motion of a body moving upwards. Body movinG upwards:Whenever a body is thrown upwards, it returns to the ground after some time because it is attracted towards the earth due to gravity. Here,
ACCORDING to 1st equation of motion: ➝ v = u + at Putting the above values, ➝ v = u + (-g)t ➝ v = u - gt So, Correct option is: Explore more !!Other two equations of motion,
Body moving downwards:Here,
Equations of motion,
⚠️ Don't GET confused in sign convection, it is according to Cartesian system....... ━━━━━━━━━━━━━━━━━━━━━━━━━━ |
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| 31. |
Please give the answer of |
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Answer» Hey Your Answer Explanation:
3 = a.... give me THANKS plzz..... hope it's useful to U.... |
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| 32. |
31. The primary of a transformer has 200turns and the secondary has 1000 turns.If the power output from the transformerat 1000 V is 9 kW, calculate(i) The primary voltage and(ii) The heat loss in the primary coil ifthe resistance of the primary is 0.222and efficiency of the transformer is90%. |
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Answer» Answer: The overall EFFICIENCY of a TRANSFORMER is 90%. the transformation is rated for an output of 9000 watt. the primary voltage is 1000 volt. the ratio of turn in the primary to the SECONDARY coil is 5:1 the IRON losses at full load are 700 watt, the primary coil has a resistance of 1 OHM in the above the current in the primary coil is Explanation: |
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| 33. |
The laws of electromagnetism tell us that energy can be transferred from one object to another |
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Answer» Answer: Heat is the transfer of ENERGY from a warmer object to a cooler object. For example, a lighted match (higher temperature object) will transfer heat to a large pan filled with lukewarm water (lower temperature object). Note that the actual amount of thermal energy each object has doesn't matter, as the pan of lukewarm water might have more thermal energy than the match. What is needed for heat transfer to take place is a difference in temperature between two objects. Without this difference, no heat transfer can take place. Heat can be transferred in three ways: by conduction, by convection, and by radiation. Conduction is the transfer of energy from one molecule to another by direct contact. This transfer occurs when molecules hit against each other, similar to a game of pool where one moving ball strikes another, causing the second to move. Conduction takes place in solids, LIQUIDS, and gases, but works best in materials that have simple molecules that are located close to each other. For example, metal is a better conductor than wood or plastic. Convection is the movement of heat by a fluid such as water or air. The fluid (liquid or gas) moves from one location to another, transferring heat along with it. This movement of a mass of heated water or air is called a current. Radiation is the transfer of heat by electromagnetic waves. When you stand in the sun, you are warmed by the electromagnetic waves, mainly infrared radiation (and to a lesser extent, visible light), that travels from the sun to Earth. In addition to the sun, light bulbs, irons, and toasters also transfer heat via radiation. Note that, unlike conduction or convection, heat transfer by radiation does not need any matter to help with the transfer. You can detect evidence of heat transfer. You might see the air shimmering over a radiator (convection), put your hand on a warm spoon that's been sitting in a hot bowl of soup (conduction), or notice that the sun shine feels warm on your skin (radiation). If you need evidence of thermal energy or heat in your life, just feel your arm. Your body GENERATES heat 24 hours a day! (Taken from KEEP Energy Education Activity Guide "Exploring Heat"). |
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| 34. |
A train covers first 100 km in 4 hrs and next 200 km in 5 hrs. What is its average speed? |
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Answer» Answer:Let the speed in FIRST CASE be S1 Let the speed in SECOND case be S2 S1=100/4=25 KM/hr. S2=200/5=40 km/ hr. AVG speed=(S1+S2)/2 =(25+40)/2 =65/2 =32.5km/hr. Explanation: |
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| 35. |
DateÀ= Gumis6 = 32 mÀ Ã = horizontal component is 3252vertical component isthe change in velocityFind |
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Answer» ######### ##### Explanation decode it yourself HA ha ha |
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| 36. |
If refractive index of water is 4/3 and that of glass is 3/2. Find the refractive index of glass w.r.t. water. |
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Answer» ng=c/vg nw=c/vw Refractive INDEX of GLASS w.r.t. WATER NGW =vw/vg=ng/nw = ⟹ ngw = 9/8 |
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| 37. |
The radius of curvature of a sperical mirror is 18 cm wt is the focal leagth |
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Answer» Answer: 36 cm Explanation: SO f = 9cm |
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| 38. |
1:There are three Rods A,B,C of equal length L at same temperature .There coefficient of linear expansion are αa, αb, αr respectively. if the temperature of all rod are increased by θ ° C and coefficient of linear expansion is like αb>αa >αc. then what will be the final order of length of rod? |
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Answer» Explanation: |
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| 39. |
Find the equivalent resistance between a and b |
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| 40. |
In a experiment, the farcentagephysical quantities A, B, C and o are11.,2%, 37 and 4% respectivelymaxinan percentage error in the.Themeasurement & wherex = A² Btwill bectzD |
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Answer» In a experiment, the farcentage physical quantities A, B, C and o are 11.,2%, 37 and 4% respectively maxinan percentage error in the .The measurement & where x = A² Bt will be ctz D Explanation: may be |
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| 41. |
1 cm ત્રિજ્યા અને 10 cm ઊંચાઇ ધરાવતા નક્કર નળાકાર નું પરુષઠ ક્ષેત્રફળ કેટલા (mm2) જેટલું હશે. |
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Answer» VVH v Explanation: bbjtjfksksksgfddnrfjsfhdkglssaavbbbdifystfyatcgjd |
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| 42. |
32). Assertion. The motion of the moon and the earth are the examples of uniform circular motionReason- If an object moves in a circular path with non-uniform speed, its motion is called uniform circularmotionQ33). Assertion: If the displacement of the body is zero, distance covered by it may not be zeroReason: Displacement is a vector quantity and distance is a scalar quantity |
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Answer» Q33 is WRITE answer Explanation: Because the displacement of the body is ZERO, DISTANCE COVERED by it may not be zero. |
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| 43. |
What happens to the valu of g if we go towards the centre of the earth |
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Answer» Answer:increase Explanation:as we know G=Gm/r² where g is GRAVITY, G is gravitational CONSTANT and r is distance from center of earth (if consider spherical) By FORMULA g is inversely proportional to r² So, gravity increases as the distance from the center decreases |
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| 44. |
The change in position with reference to a stationary object is called * |
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Answer» gouj, |
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| 45. |
In an experiment to determine the time period of oscillation for a simple pendulum is found out to be 1.5s,1.6s,1.8s,2.2s,2.1s and 2.4s.Find the relatiive error and the percentage error in the measurement.I need a step by step explaination! |
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Answer» Answer: In an EXPERIMENT to determine the time PERIOD of oscillation for a simple pendulum is FOUND out to be 1.5s,1.6s,1.8s,2.2s,2.1s and 2.4s.Find the relatiive error and the percentage error in the measurement.I need a STEP by step EXPLAINATION! I think it is helpful to you |
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| 46. |
the measured value of a diameter by using a screw gauge is found to be 1.32 1.33 1.34 1.35 1.36 1.37 calculate absolute errors relative error and percentage error |
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Answer» Explanation: STD: 9 Sub: Maths --------------------------------------------- · Write tables 12 to 30 · Use suitable identities to find the product of · (×+4)(×+10) · (×+8)(×-10) · (3×+4)(3×-5) · (3-2x)(3+2x) · Evaluate the following products without multiplying directly. a) 103×107 b) 95×96 c) 104×96 · Factorise the following using appropriate identities. a) 9x2 +6xy+y2 b) 4y2- 4y+1 c) X2-y2/100 · Classify the following as a linear, quadratic and cubic POLYNOMIAL. x2 + x , x - x3 , y + y2 + 4 , 7x3 , p2 , 3t · If p(x) = 5x – 4x2 +3 then find a)P(0) if x=0 b) p(-1) if x= -1 7. Factorise a) p2 - 5p – 24 b) 2x2 – x - 6 |
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| 47. |
12. If a body is moving in circular path of radius 14 m. It(3)(4) Speed of the particle changes continuouslycomplete one revolution in 7 s. Considering the speedto be uniform, the value of centripetal acceleration is |
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Answer» Answer: 2m/s HOPE it HELP MARK as BRAINLIEST hope it help mark as brainliest hope it help mark as brainliest hope it help mark as brainliest hope it help |
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| 48. |
पशिधारके किस सिमानपरिपचा विपरितSalveil avella से+A100 vautT 150 vartR = ? |
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Answer» Answer: भाई तुम ना GOOGLE per Search Mari tumhe Ans mil JAYEGA kya TUM puchate ho THINK jai Bhar tum chromo per Search Mari mil Jayega Mera yakin MANO |
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| 49. |
एक M द्रव्यमान का वेग क्षैतिज धरातल पर स्थिर अवस्था में है। वेज का आनत कोण A है| u वेग से क्षैतिज में गतिशील 'm' द्रव्यमान कीएक गेंद वेज के आनत तल से अप्रत्यास्थ टक्कर करके वेज के आनत तल पर ऊपर फिसलती है। टक्कर के तुरन्त बाद वेज का वेग होगा(सभी प्रकार के घर्षण नगण्य लेते हुए): |
Answer»
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