InterviewSolution
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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.
| 401. |
Assertion A: 1 metre can be written as 1 m and not as 1 M. Reason R: If the unit of physical quantity is not named after a scientist, symbol ofthe unit should not be denoted with a capital letter. |
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Answer» A and R is CORRECT and R is the correct EXPLANATION of A. |
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| 403. |
What is the lowest limit of frequency range that is audible to human beings ? |
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Answer» |
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| 404. |
Name two opaque liquids. |
| Answer» SOLUTION :MILK and fruit JUICE can be considered as opaqud liquid. | |
| 405. |
……… is the chain of small bones joined togerther supporting the body. |
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Answer» |
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| 406. |
Teeth are not considered as bones. |
Answer» SOLUTION :Teeth are CONSIDERED as a part of skeletal SYSTEM but are not considered as bones due to thefollowing REASONS. 
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| 407. |
Pick out the incorrect one from the following . |
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Answer» The chemical ENERGY in fossil FUELS is not a form of potential energy. |
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| 408. |
Centimetre per second is the unit of |
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Answer» DISTANCE COVERED |
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| 409. |
Which of the following units of temperature is not followed by the word 'degree'? |
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Answer» Celsius |
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| 410. |
Clavicle is also known as breastbone. |
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Answer» |
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| 411. |
A child is trying to drag water tin but fails because |
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Answer» Applied force is not sufficient. |
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| 412. |
Identify whether the following are elements or compounds or mixtures Give proper justification. (a) Saline water (b) Tincture of iodine (c) Distilled water (d) Potable water (e) ozone (f) Sand (silicon dioxide) |
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Answer» SOLUTION :(a) Saline WATER is a MIXTURE at it is a solution of glucose, sodium chloride and potassium chloride in water. (b) Tincture of iodine is a mixture of iodine and potssium iodide dissolved in alcohol. (C) Distilled water is a compound as it is pure water devoid of all nuneral salts. (d) Potable water contains dissovled salts in it Therefore, it is a mixture. (e) Ozone is an element. (f) SAND (silicon DIOXIDE) is a compound which contains the elements silicon and oxygen. |
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| 413. |
Centrifugation can be used for the separation of |
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Answer» COMPONENTS of ink |
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| 414. |
Define matter. |
| Answer» SOLUTION :Matter is DEFINED as anything that has MASS and OCCUPIES space. | |
| 415. |
Give two examples for ball and socket joints. |
| Answer» SOLUTION :Ball and socket joints are PRESENT in the hip and shoulder region. The rounded END of ONE bone is called ball which fits into the hollow PART of theother bone. This joint moves in all directions. | |
| 416. |
Find the odd one from the following. |
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Answer» Air HENCE, the CORRECT option is (B) |
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| 417. |
Krishna had parked his two-wheeler at ''no parking'' place as he did not find any board regarding the notice NO PARKING. After some time, the traffic police took away his bike to a nearby police station, by lifting it with a rope attached to a pulley arrangement. If the mass of the bike is 150 kg, the what is its weight in dynes? |
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Answer» `15xx10^(7)` DYNES `mg=150xx10=1500N=15xx10^(7)` dynes HENCE, the correct OPTION is (a). |
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| 418. |
Mention the differences between evaporation and boiling. |
| Answer» Solution :`{:("Evoporation","BOILING"),("Confined to only SURFACE molecules","Pertains to the entire bulk of the liquid"),("Takes place at any TEMPERATURE","Takes place at a FIXED temperature called boiling point"),("Slow process","Fast process"):}` | |
| 419. |
Mention some of the applications of a magnet . |
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Answer» Solution :Some of the application of MAGNET : Used in loud SPEAKER, earphones, televisions, ETC. Used in magnetic compass, door bells, doors of cupboard, etc. Used in TOYS. Magnetic tapes used in tape recorders, etc. |
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| 420. |
Where do you find the fixed joint in the human body ? |
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Answer» Elbow Hence the correct option is (b). |
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| 421. |
What are the applications of reflection of light ? |
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Answer» SOLUTION :Applications of REFLECTION of light: (ii) We can see the object (ii) The working of a reflecting periscope (III) KALEIDOSCOPE |
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| 422. |
Write the difference between conductor and insulator. |
| Answer» SOLUTION :`{:("Conductors ","Insulators"),("ALLOW current to FLOW through them","Do not allow current to flow through them"),("They have more free electrons","They have no free electrons"),("EXAMPLE: Metals","Example: Rubber , PLASTIC , wood, etc."):}` | |
| 423. |
Matchth following columns . |
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Answer» <P> `(D)to (r),(E) to (t),(F) to (s)` |
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| 424. |
Define motion, What do you understand by the terms 'uniform motion' and 'non-uniform motion' ? Explain with examples. |
| Answer» Solution :If a BODY changes its POSITION with reference to its surroundings with time, then the body is SAID to be in a STATE of motion. | |
| 425. |
If the object is placed at a distance of 10 cm from a plane mirror, then the image distance is ______ . |
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Answer» 20 cm HENCE , the CORRECT option is (d). |
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| 426. |
Give scientific reasons.Fish has a streamlined body. |
| Answer» Solution :The body of fish is long and pointed at both the ends. This is called stremlined SHPE. This shpe HELPS the ANIMAL to move faster through WATER, it reduces water resistance while moving. It helps the body to cut through the water more efficiently. | |
| 427. |
One person is pushing a box A of certain mass with 100 N force .Another box B of the same mass is pushed of in the same direction by other two persons .each of whom is exerrting 35 N force .The force is exerted on box A is just sufficient to make it move .Will the box B move ? Give reason in support of your answer. |
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Answer» Solution :SINCE the BOXES are of the same mass, same amount of forces are required to be applied to make them MOVE . The force applied on box B is (35+35) N= 70N Since 100 N is the minimum force required to move the box 70 N force cannot move the box B. |
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| 428. |
How balance of oxygen and carbon dioxide in the atmosphers is maintained? |
| Answer» SOLUTION :During photosynthesis plant uses carbon dioxide and releases OXYGEN . Plants also consume oxygen for respiration , but they PRODUCE more ofit than they consume . Oxygenin air isused by living organisms PRESENT in air , water or soil during respiration . this shows the interdependence of plantsand ANIMALS dioxide in theatmosphere is maintained. | |
| 430. |
{:("Across",|,"Down"),(4."Infinite number of images in formed when two plane mirrors placed",|,1."These are formed due to rectilinear propagation of light"),(5."Magnification of cancave mirror when the object is placed at the centre of curvature",|,"2. This mirror forms laterally inverted image"),(7."Example of hot source of light ",|,"3.Example of natural source of light "),(9."Convex mirrror can form this image",|,"6. This mirror can form a diminihedvirtual image"),(10."Number of images formed when an object placed between two plane mirrors inclined by" 60^(@),|,"8.Eclipse formed when earth comes between moon and sun"),(11."Image formed due to convergence of light",|,):} |
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Answer» |
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| 431. |
Explain how maximum static friction is called limiting friction . |
| Answer» Solution :Let a heavy wooden box be placed on a hoor, it being PUSHED by a person. The static frictional force developed between the wooden box and floor BALANCES the force APPLIED in pushing the box. Iftwo persons try to push it the box does not move as the static frictional force INCREASES in order to balance the force ofpushing it: If the pushing force is further increased, at one stage, the static &ic tional force reaches a MAXIMUM value at which it cannot increase any further. This maximum value of static frictional force is called limiting Eiction. If the applied force on the wooden box is more than limiting friction, then the box starts moving. | |
| 433. |
Identify the odd one among the following |
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Answer» Potassium permanganate HENCE, the CORRECT option is (d). |
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| 434. |
Iron cans used for storage of foodstuffs are coated with |
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Answer» zinc |
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| 435. |
Prefix used for 10^(-3) is |
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Answer» Milli |
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| 436. |
What is the relation between CGS and SI unit of volume? |
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Answer» SI unit of volume is `m^(3)`. RELATION is, 1 `m^(3) = (100 cm)^(3)` `implies 1 m^(3) = 10^(6) cm^(3)` |
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| 437. |
Setae of erthworm helps in locomotion. Discuss. |
| Answer» Solution :Skeletal system is absent in earthworm. Movement takes place by the contaction and relaxation of muscles. The BODY is divided into many segments and each segment bears a number of very small fine bristle like projections called setae. In the CONTRACTED area of the body setae project outward and fix to the soil to PROVIDE grip and pull the REMAINING part of the body. Thus, by constant fixing and relesing of setae and by contraction, and relaxation of muscles, movement OCCURS in earthworm. | |
| 438. |
Choose the case where minimum friction acts (a) When a person walks on the road. (b) When a person walks on wet marble floor. (c ) When a person walks on sand floor. |
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Answer» Hence, the correct option is (b) |
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| 439. |
Match the following columns. |
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Answer» |
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| 440. |
What is an incandesncent body ? Given example. |
| Answer» SOLUTION :The BODIES which emit light when a very high temperature heat is applied to them are called incandescent bodies. Example: HOT FILAMENT in an electric bulb. | |
| 441. |
List out the difference between a point source and an extended source of light. |
| Answer» Solution :`{:("Point source of light ","Extended source of light"),("It is point size source","It has DIMENSION"),("It CASTS only umbra on the secreen for anopaque OBJECT.","It cast both umbra and PENUMBRA for an opaque object"),("Examples Light emitting from a pin hole aperture.","Examples : A burning candle, a glowing tube light."):}` | |
| 443. |
Gopi and Bhasker arranged a pair of mirrors at an angle of 120^(@) and 30^(@) , respectively. Who will observe more number of images, when an object is viewed through the mirrors at symmetric position? |
Answer»  `{:(n_(G)=(360)/(theta_(G)),n_(B)=(360)/(theta_(B))-1),(""=(360)/(120),""=(360)/(30)-1),(""=3,""=12-1=11):}` `n_(B) GT n_(G)` that means Bhasker will see more number of images than GOPI |
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| 444. |
Celsius, Fahrenheit, Thermometer are? |
| Answer» SOLUTION :UNITS of MEASUREMENT | |
| 445. |
Which of these ar parts of hindlimbs ? (i) Femur (ii) Humerus (iii) Tarsals (iv) Wrist |
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Answer» I and ii |
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| 446. |
Magnetism was first found around ______ |
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Answer» `500_(BCE)` |
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| 447. |
When a man swims under water, he feels a pain on his eardrums. Why? |
| Answer» Solution : When a man swims under WATER, he feels pressure because the pressure INSIDE increases with depth. Therefore, the DEEPER he GOES, the greater is the pressure on his ear drums. | |
| 448. |
Two plane mirrors are arranged perpendicular to each other . If a light ray is incident at 30^(@) on one of the plane mirrors of above arrangement , then find (a) Angle of reflection at the second plane mirror. (b) Angle of deviation at both the mirrors. (c) Number of images that we can observe when one plane mirror is rotated by 30^(@) towards the other. |
Answer»  (a) Angle of reflection at the second plane mirror =`60^(@)` (b) Angle of DEVIATIOIN at `M_(1)=180-2i` `""=180-2(30)` `""=120^(@)` Angle of deviation at `M_(2)=180-2i` `""=180-2(60)` `""=180-120=60^(@)` (c)  Number of IMAGES `=(360)/(theta)-1=(360)/(60)-1=5` |
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| 449. |
_____ is/are used as electrical source/sources |
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Answer» Cell |
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| 450. |
Pavan is measuring the area of a leaf by using a graph paper and he measured the sum of the areas of full boxes and more than half boxes inside the outline of the leaf which is 25 cm^(2). Find the length of the square whose area is equal to the area of the leaf. |
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Answer» Solution :AREA of square = `"Side"^(2)` `25 = "Side"^(2)` `therefore` side = 5 CM |
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