InterviewSolution
Saved Bookmarks
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.
| 451. |
Name the skeletal joint which permits movement in one direction only. |
|
Answer» |
|
| 453. |
How will you convert a glass sheet into a translucent sheet ? |
|
Answer» Solution :There are a couple of WAYS to convert a glass sheet into a translucent sheet. (a) By applying a thin layer of oil on the glass sheet. (B) by PLACING a BUTTER paper on the glass sheet. |
|
| 454. |
Explain how an opaque paper can be made translucent. |
| Answer» Solution :A paper is a tranlucent medium of light. The PORES of an opaque paper do not allow any light of get TRANSMITTED as some PART of it get EITHER absorbed or reflected . On oiling it , the pores get filled with oil, and hence, some part of light can be transmitted while remaining light gets reflected or absorbed , Hence, oiled paper behaves as a translucent object. | |
| 455. |
When two plane mirrors are at right angle with each other, the number of image viewed is ______. |
|
Answer» |
|
| 456. |
____ is the chemical added to water to hasten the process of sedimenstation. |
|
Answer» |
|
| 457. |
A bus is moving with uniform velocity, |
|
Answer» Then its ACCELERATION is non-zero. |
|
| 460. |
Materials wich allow larger currents to fow through them are called |
|
Answer» CONDUCTOR |
|
| 461. |
If load is between the fulcrum and effort of a lever, it is called ____ order lever. |
|
Answer» `I^(ST)` |
|
| 462. |
Define velocty. |
| Answer» SOLUTION :Displacement of the BODY in UNIT TIME is called its velocity. | |
| 463. |
Water is taken in a stainless steel contaienr and heated. Heating is stopped and a lid is placed on the container. What could be your observation? |
| Answer» Solution :When water is subjected to heating, steam is obtained. If a lid is PLACED on TOP of the vessel, steam cannot escape out and gets accumulated in the vessel on the SURFACE of water. As heaing is stopped, the steam is cooled down and gets condensed to water droplets on the INNER surface of the lid. | |
| 464. |
Between galvanized iron containers and tinned iron containers which are used to preserve food material ? Justifyyour answer. |
| Answer» SOLUTION :In galvanization process , zinc is used to coat on iron . Thechemical REACTIVITY of Zinc is much more than that of tin . HENCE , food atuff cannot be STORED in galvanized container . Tincoated iron CONTAINERS are used to preserve food. | |
| 465. |
A crowbar of length 0.75 m is used to dispace a body. Find its mechanical advantage, if the load arm is 0.25 m. |
|
Answer» `=(0.75)/(0.25)` =3 MA=3 |
|
| 466. |
List the similarities and differences between a fish and a bird. |
| Answer» Solution :Both FISH birds possess stremlined body shape. Stremlined body shape means rounded in the FRONT and NARROW at the back. This shape facilitates the easy movement of fish through WATER and birds through air. This is because it reduces the RESISTANCE of water of air. | |
| 467. |
Given the symbol of anelectric fuse used in circuitdiagrams. |
|
Answer»
|
|
| 468. |
Identify a compound among the following |
|
Answer» Common salt Hence, the correct option is (c). |
|
| 469. |
Two plane mirrors M and M' are arranged such that their reflecting surfaces face towards a common object placed between them and kaming an angle of 72^(@)with each other . The number of images of the object placed between the reflecting surfaces of the mirrors is _______ . |
|
Answer» 3 `=360//72=5` Hence, the correct OPTION is (C) |
|
| 470. |
_____ is used to measure the length of a curved line. |
|
Answer» A thread |
|
| 471. |
Assertion (A): Temperature is a fundamental quantity in SI system. Reason (R ): In other systems of measurement only mass, length and time are fundamental quantities. |
|
Answer» A and R is CORRECT and R is the correct EXPLANATION of A. |
|
| 473. |
Give reasons for the following. (a) Liquids can be taken in an open container while gas requires a closed container. (b) Honey cannot be poured into another container as easily as water (c) Gases flow more than liquids. (d) As water is subjected to heating, its temperature increases and becomes constant at 100^(@)C even though water is still there in the container and the supply of heat is continued. (e) When a solid substance is subjected to heating, it dissappears without leaving any liquid. |
|
Answer» Solution :(a) Liquids have on e free surface. As the upper surface is a free surface, it can be left open for the contaienr in which a liqudi is TAKEN. Liquids occupy a fixed volume. Gases have no free surfaces at all. Therefore, a gas has to be taken in a container closed on all the sides. (b) Honey is viscous liquid, and hence has lesser FLUIDITY when compared to water. (c) Gases hve negligible intermolecular forces of attraction while liquids have appreciable intermolecular forces of attraction. As a result, gaes can flow more than liquids. (d) `100^(@)C` is the boiling point of pure water. Atthis TEMPERATURE, water starts vaporzing into steam. Till the entire water in teh container gets converted to steam. the temperature remaisn constant at `100^(@)C`. The heat is utilized for breaking the intermolecular forces of attraction. (e) Generally, a solid substance on heating MELTS and changes into liquid state, but, some solids, on heating, UNDERGO sublimation and chagne into vapour state directly wihtout passing through intermediate liquids state. Threfore. such substances disappear on heating without leaving any liquid. |
|
| 474. |
Which of the following has a filament ? |
|
Answer» BULB |
|
| 476. |
Angle of reflection means ______. |
|
Answer» |
|
| 477. |
Identify the incorrect option from the following based on the diagram given above. |
|
Answer» `{:(A,B,C,D),("Melting","Freezing","BOILING","CONDENSATION"):}` Hence, the correct OPTION is (a). |
|
| 478. |
Mention the purposes for which separation of mixtures is important Give examples. |
|
Answer» Solution :(a) To get USEFUL substances from NATURALLY AVAILABLE materials. (B) For purification of synthertically made compounds. (c) For removal of impurities from a manufactured SUBSTANCE. |
|
| 481. |
___ cannot be broken down into simpler substances. |
|
Answer» |
|
| 482. |
Assertion: Point sources form only umbra. Reason : Umbra is formed due to the rectilinear propagation of light. |
|
Answer» A and R are TRUE and R is the CORRECT EXPLANATION of A. |
|
| 483. |
Distinguish between shadow and image. |
| Answer» Solution :`{:("Shadow","Image"),("It is BLACK in COLOUR" ,"It has many colour"),("It s formed DUE to rectilinear propagation of LIGHT","It is formed due to the point of intersection of reflected (or) extended reflected rays"),("The shadow consists of either umbra (or) umbra and penumbra","Image may be REAL (or) virtual"):}` | |
| 484. |
The girdle that supports hip region is called pectoral girdle. |
| Answer» Solution :FALSE: The girdle that SUPPORTS hip REGION is PELVIC girdle. | |
| 485. |
A particle is movingin circular path of radius 7 cm. Find the ratio of its displacement to the distance covered after the completion of a half |
|
Answer» |
|
| 486. |
What does LED stands for ? |
|
Answer» LIGHT EMITTING device |
|
| 487. |
List out the letters of the alphabet that do not show lateral inversion when viewed through a plane mirror. |
|
Answer» |
|
| 488. |
The oxide of carbon that turns lime watermilky is_________. |
|
Answer» |
|
| 489. |
The symbol of electrical component whose Ionger vertical line represents positive terminal while short and thick line denotes negative terminal is______. |
|
Answer» CELL |
|
| 490. |
Glancing angle of incidence means _____ . |
|
Answer» |
|
| 491. |
The short hand of a clock is at 12 and the minutes hand is 3, thenthe time at that instant is _____. |
|
Answer» |
|
| 492. |
Define derived physical quantity and give any two examples. |
|
Answer» Solution :PHYSICAL quantity which is DEPENDENT on other physical quantities is called DERIVED physical quantity. Speed = `("LENGTH")/("Time")`, Area = `"Length"^(2)` |
|
| 493. |
Identify the joint present in the following. |
|
Answer» Knee JOINT (b) Ankle-Gliding joint ( c) Between skull and spine - Pivot joint (d) Shoulder - Ball and socket joint ( e) Elbow - Hinge joint |
|
| 494. |
Solid-solid mixture are mostly_______ |
|
Answer» |
|
| 495. |
The increase in the proportion of _________ in air leads to global warming. |
|
Answer» |
|
| 496. |
What is the advantage of distillation over evaporation? Under which conditions, they are preferntially used? Give suitable example. |
| Answer» SOLUTION :Both evaporation and sitillation are based on the same principle of vaporization of the liquid component leaving behind the solid component. But, evaporation resutls in the recovery of only the solid component. The liquid component VAPORIZES and escapes out into the ATMOSPHERIC air. in case od distillation, the liquid component can ALSO be recovered in addition to the solid component. in case of MIXTURE where the recovery of liquid component is not economically viable, evaporation is a preferred method. | |
| 497. |
A light ray is incident on a smooth reflecting surface making an angle of incidence 2i. If the angle of incidence is doubled, then the deviation of the light ray is equal to ______ . |
|
Answer» 90-40i Angle of incidence when doubled `=2xx2i=4i` Therefore, angle of deviation `=180-(4i+4i)=180-8i` HENCE, the CORRECT OPTION is (d) |
|
| 498. |
What are the different ways of minimizing air pollution? |
|
Answer» Solution :(i)REDUCING the growth of population (ii) Arresting deforestation (III) Increasing GREENERY (iv)Synthesis of ECO - friendly CHEMICALS (v) judicious use of natural resources |
|
| 499. |
______ is the temperature at which a liquid starts changing into gaseous state. |
|
Answer» |
|
| 500. |
Define closed circuit . |
| Answer» SOLUTION :CLOSED CIRCUIT is the path in which the electrical energy FLOWS. | |
