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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 651. |
Why machineries are provided with lubricants |
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Answer» Why machineries are provided with lubricants |
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| 652. |
A body of mass 15 kg is raised from certain depth. If the work done in raising it by 10m is 1620J,its velocity at this position is |
| Answer» A body of mass 15 kg is raised from certain depth. If the work done in raising it by 10m is 1620J,its velocity at this position is | |
| 653. |
Can two like charged bodies attract each other in any situation? |
| Answer» Can two like charged bodies attract each other in any situation? | |
| 654. |
What is the difference between electrolytic conductors and semiconductor |
| Answer» What is the difference between electrolytic conductors and semiconductor | |
| 655. |
A meteor burns due to the heat of the earth's atmosphere. Then how is a rocket able to escape this heat while leaving and entering the atmosphere and also it doesn't burn? How |
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Answer» A meteor burns due to the heat of the earth's atmosphere. Then how is a rocket able to escape this heat while leaving and entering the atmosphere and also it doesn't burn? How |
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| 656. |
Fill in the blanksi. The perpendicular to the mirror at the point of incidence is called....................... .ii. The reflection of light from a wooden surface is.................. reflection.iii. The working of Kaleidoscope is based on the properties of................... . |
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Answer» Fill in the blanks i. The perpendicular to the mirror at the point of incidence is called....................... . ii. The reflection of light from a wooden surface is.................. reflection. iii. The working of Kaleidoscope is based on the properties of................... . |
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| 657. |
Why is water spilled purposely on the slides in water parks? |
Answer» Why is water spilled purposely on the slides in water parks? |
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| 658. |
Question 5 (a) In the following situations identify the agent exerting the force and the object on which it acts. State the effect of the force in each case. (a) Squeezing a piece of lemon between the fingers to extract its juice. |
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Answer» Question 5 (a) |
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| 659. |
Molecules of water are held together by hydrogen bonds. This mutual intermolecular attractive force is called _______. |
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Answer» Molecules of water are held together by hydrogen bonds. This mutual intermolecular attractive force is called _______. |
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| 660. |
When an electric current is passed through a solution containing copper sulphate, copper gets deposited on which electrode? |
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Answer» When an electric current is passed through a solution containing copper sulphate, copper gets deposited on which electrode? |
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| 661. |
two weights w1 and w2 are tied to the ends of a string passing over a frictionless Pulley when the pulley is move upwards with an acceleration g the tension in the string is |
| Answer» two weights w1 and w2 are tied to the ends of a string passing over a frictionless Pulley when the pulley is move upwards with an acceleration g the tension in the string is | |
| 662. |
Two conducting wires of the same material and of equal lengths and equal diameters are first connected in series and then in parallel in an electric circuit. The ratio of the heat produced in series and parallel combinations would be: |
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Answer» Two conducting wires of the same material and of equal lengths and equal diameters are first connected in series and then in parallel in an electric circuit. The ratio of the heat produced in series and parallel combinations would be: |
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| 663. |
What should be the corresponding values of temp and pressure at STP and NTP |
| Answer» What should be the corresponding values of temp and pressure at STP and NTP | |
| 664. |
difference between induced charge and indicing char |
| Answer» difference between induced charge and indicing char | |
| 665. |
The sound from an insect is produced when it vibrates its wings at an average rate of 500 vibrations per second : (a) What is the time-period of the vibrations? (b) What is the frequency of the vibrations in hertz? (c) Can we hear this sound? Why or why not? |
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Answer» The sound from an insect is produced when it vibrates its wings at an average rate of 500 vibrations per second : (a) What is the time-period of the vibrations? (b) What is the frequency of the vibrations in hertz? (c) Can we hear this sound? Why or why not? |
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| 666. |
The channel transition matrix of a binary channel is given byIf P(x0)=13 and P(x1)=23, then the ratio P(y1)P(yo) will be _______ .2.46 |
Answer» The channel transition matrix of a binary channel is given by If P(x0)=13 and P(x1)=23, then the ratio P(y1)P(yo) will be _______ .
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| 667. |
41. How many moles of Al2(SO4)3 would be present in 100 g of a substance? |
| Answer» 41. How many moles of Al2(SO4)3 would be present in 100 g of a substance? | |
| 668. |
3 In which case the image formed by a convex léns is virtual? \lbrack Symbols have their usual meaning Sigm )1)0 >usf(2) f v |
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Answer» 3 In which case the image formed by a convex léns is virtual? \lbrack Symbols have their usual meaning Sigm )1)0 >usf(2) f |
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| 669. |
50. An electric motor creates a tension of 4500 N in a hoisting cable and reels it at the rate of 2 m/s. The power of the electric motor will be Options: 225 W 9 kW 15 kW 900 H.P. |
| Answer» 50. An electric motor creates a tension of 4500 N in a hoisting cable and reels it at the rate of 2 m/s. The power of the electric motor will be Options: 225 W 9 kW 15 kW 900 H.P. | |
| 670. |
37 A gas for which Gamma equals to 5 3 is heated at constant pressure the percentage of total heat given that will be used for external work is |
| Answer» 37 A gas for which Gamma equals to 5 3 is heated at constant pressure the percentage of total heat given that will be used for external work is | |
| 671. |
15. A particle moving with constant acceleration covers a distance of 30 m in the 3rd second. It covers a distance of 50m in the 5th second.What is the acceleration of the particle? A. 3 ms /2 B. 5 ms/ 2 C. 8 ms /2 D. 10 ms /2 |
| Answer» 15. A particle moving with constant acceleration covers a distance of 30 m in the 3rd second. It covers a distance of 50m in the 5th second.What is the acceleration of the particle? A. 3 ms /2 B. 5 ms/ 2 C. 8 ms /2 D. 10 ms /2 | |
| 672. |
Unit of electric power may also be expressed in (A) volt ampere (B) kilowatt hour (C) watt second (D) joule second |
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Answer» Unit of electric power may also be expressed in (A) volt ampere (B) kilowatt hour (C) watt second (D) joule second
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| 673. |
a fish floats in liquid with its eye at the centre of an opaque walled full †an k of liquid of circular cross section when the fish looks upwards it can see a fish eye view of the surrounding scene.i.e it is able to view the entire space above the liquid sourface.the diamertre of †an k is 30cm and critical angle for liquid is 47 degree at what maximum depth the surface of liquid d, must the fish be floating. |
| Answer» a fish floats in liquid with its eye at the centre of an opaque walled full †an k of liquid of circular cross section when the fish looks upwards it can see a fish eye view of the surrounding scene.i.e it is able to view the entire space above the liquid sourface.the diamertre of †an k is 30cm and critical angle for liquid is 47 degree at what maximum depth the surface of liquid d, must the fish be floating. | |
| 674. |
What type of waves is an electro magnetic wave?(transverse or longitudinal wave) |
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Answer» What type of waves is an electro magnetic wave?(transverse or longitudinal wave) |
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| 675. |
The direction of sound travel to hear, is always |
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Answer» The direction of sound travel to hear, is always |
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| 676. |
define frictional fo |
| Answer» define frictional fo | |
| 677. |
How day and night occurs? |
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Answer» How day and night occurs? |
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| 678. |
Statement 1: Moon is a natural satellite of Earth. Statement 2: Man-made satellites launched from Earth to orbit around it, are known as artificial satellites. But, moon is a naturally occuring celestial body, which revolves around Earth. |
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Answer» Statement 1: Moon is a natural satellite of Earth. Statement 2: Man-made satellites launched from Earth to orbit around it, are known as artificial satellites. But, moon is a naturally occuring celestial body, which revolves around Earth. |
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| 679. |
The velocity- time graph of a body is given in figure. The maximum acceleration in ms−2 is |
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Answer» The velocity- time graph of a body is given in figure. The maximum acceleration in ms−2 is |
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| 680. |
during rolling without slipping what is the velocity of the point in contact with the surface |
| Answer» during rolling without slipping what is the velocity of the point in contact with the surface | |
| 681. |
Change in length of a material depends on its ______. |
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Answer» Change in length of a material depends on its ______. |
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| 682. |
HEAT : Two identical vessels are connected by a tube with a valve letting the gas pass from one vessel into the other if the pressure difference dP >= 1.1 atm. Initially there was vacuum in one vessel while the other contained ideal gas at a temperature Ti=27^°C and pressure P1 = 1atm. Then both vessels were heated to a temperature Tf = 107^°C. Upto what value will the pressure in the first vessel (which had vacuum initially) will increase? |
| Answer» HEAT : Two identical vessels are connected by a tube with a valve letting the gas pass from one vessel into the other if the pressure difference dP >= 1.1 atm. Initially there was vacuum in one vessel while the other contained ideal gas at a temperature Ti=27^°C and pressure P1 = 1atm. Then both vessels were heated to a temperature Tf = 107^°C. Upto what value will the pressure in the first vessel (which had vacuum initially) will increase? | |
| 683. |
How does a big heavy balloon with a basket full of people manage to float in the air? |
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Answer» How does a big heavy balloon with a basket full of people manage to float in the air? |
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| 684. |
Two springs A and B are streched by applying forces of equal magnitude at the four ends . If the energy stored in A is E in B is |
| Answer» Two springs A and B are streched by applying forces of equal magnitude at the four ends . If the energy stored in A is E in B is | |
| 685. |
Two pendulums of lengths 121 cm and 100 cm start vibrating. At some instant the two are in the mean position in the same phase. After how many vibrations of the shorter pendulum the two will be in phase at the mean position? |
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Answer» Two pendulums of lengths 121 cm and 100 cm start vibrating. At some instant the two are in the mean position in the same phase. After how many vibrations of the shorter pendulum the two will be in phase at the mean position? |
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| 686. |
Find the angle θa made by the light ray when it gets refracted from water to air as shown in figure.Given: θw=sin−135 |
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Answer» Find the angle θa made by the light ray when it gets refracted from water to air as shown in figure. |
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| 687. |
Question 10 (i)State whether the following statement is ‘True’ or ‘False’.The planet nearest to us is Jupiter. |
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Answer» Question 10 (i) State whether the following statement is ‘True’ or ‘False’. The planet nearest to us is Jupiter. |
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| 688. |
Speed of car A is 32 km per hour and speed of car B is 35 km per hour. If they both started from same point how much more distance car B will be able to cover in 3 hours than car A? |
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Answer» Speed of car A is 32 km per hour and speed of car B is 35 km per hour. If they both started from same point how much more distance car B will be able to cover in 3 hours than car A? |
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| 689. |
The average velocity of an ideal gas molecule at 27^{†extdegree⊂} is 0.3 m/s. The average velocity at927^{†extdegree⊂} will b |
| Answer» The average velocity of an ideal gas molecule at 27^{†extdegree⊂} is 0.3 m/s. The average velocity at927^{†extdegree⊂} will b | |
| 690. |
Water drop of radius 1.5 mm is falling from height 1 km having drag constant .5 density of water drop 1000 kg per metre cube and density of air is 1.29 kg per metre cube find its terminal velocity |
| Answer» Water drop of radius 1.5 mm is falling from height 1 km having drag constant .5 density of water drop 1000 kg per metre cube and density of air is 1.29 kg per metre cube find its terminal velocity | |
| 691. |
Which one of the following activity will not affect the strength of a magnet? |
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Answer» Which one of the following activity will not affect the strength of a magnet? |
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| 692. |
Among solids, liquids and gases, in which medium the speed of sound is the highest? What will be the speed of sound in a medium where the distance between two adjacent crest and trough of the sound wave is 0.3 m and frequency is 300 Hz. |
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Answer» Among solids, liquids and gases, in which medium the speed of sound is the highest? What will be the speed of sound in a medium where the distance between two adjacent crest and trough of the sound wave is 0.3 m and frequency is 300 Hz. |
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| 693. |
Take a used ballpen refill and rub it vigorously with a piece of polythene. What happens when we bring the refill close to small pieces of paper. Give a reason for this. [2 MARKS] |
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Answer» Take a used ballpen refill and rub it vigorously with a piece of polythene. What happens when we bring the refill close to small pieces of paper. Give a reason for this. |
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| 694. |
During night time, an area of low pressure is formed on which of the following? |
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Answer» During night time, an area of low pressure is formed on which of the following? |
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| 695. |
A ray of light is incident on a plane mirror at an angle of incidence of 30°. What is the angle of reflection? |
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Answer» A ray of light is incident on a plane mirror at an angle of incidence of 30°. What is the angle of reflection? |
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| 696. |
“A cat, I am sure, could walk on a cloud without coming through”. (Jules Verne) Which law is Macavity breaking in the light of the comment above? |
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Answer» “A cat, I am
Which law is Macavity
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| 697. |
What happens if a incident ray passes straight along the normal through the second medium |
| Answer» What happens if a incident ray passes straight along the normal through the second medium | |
| 698. |
for decolourisation of 1 mole KMnO4 the moles of H2O2 required i |
| Answer» for decolourisation of 1 mole KMnO4 the moles of H2O2 required i | |
| 699. |
52.four identical cells having emf E and internal resistance r are connected in series to form loop ABCD.Find potential difference across AB and AC |
| Answer» 52.four identical cells having emf E and internal resistance r are connected in series to form loop ABCD.Find potential difference across AB and AC | |
| 700. |
Which celestial body is seen as a bright streak of light coming down the night sky? |
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Answer» Which celestial body is seen as a bright streak of light coming down the night sky? |
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