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MCQOPTIONS
This section includes 1777 Mcqs, each offering curated multiple-choice questions to sharpen your 9th Class knowledge and support exam preparation. Choose a topic below to get started.
| 501. |
A car covers the first half of the distance between two places at a speed of \[40\,\,km\,\,{{h}^{-1}}\] and the second half at\[60\,\,km\,\,{{h}^{-1}}\]. Find the average speed of the car. |
| A. | \[100\,\,km\,\,{{h}^{-1}}\] |
| B. | \[50\,\,km\,\,{{h}^{-1}}\] |
| C. | \[48\,\,km\,\,{{h}^{-1}}\] |
| D. | \[52\,\,km\,\,{{h}^{-1}}\] |
| Answer» D. \[52\,\,km\,\,{{h}^{-1}}\] | |
| 502. |
In the velocity-time graph, the distance travelled by the particle between 1.0 sec and 4.0 sec, is approximately |
| A. | 50 m |
| B. | 40 m |
| C. | 30 m |
| D. | 20 m |
| Answer» C. 30 m | |
| 503. |
A race car accelerates uniformly from \[18.5\,\,m\,\,{{s}^{-1}}\] to \[46.1\,\,m\,\,{{s}^{-1}}\] in \[2.47\] seconds. What is the acceleration of the car? |
| A. | \[11.2\,\,m\,\,{{s}^{-2}}\] |
| B. | \[12.3\,\,m\,\,{{s}^{-2}}\] |
| C. | \[14.5\,\,m\,\,{{s}^{-2}}\] |
| D. | \[16.7\,\,m\,\,{{s}^{-2}}\] |
| Answer» B. \[12.3\,\,m\,\,{{s}^{-2}}\] | |
| 504. |
A cyclist starts from centre O and reaches at R along the path OPR as shown in graph. What would you conclude from the velocity- time graph of the cyclist from the given graph? |
| A. | Velocity changes linearly if acceleration is changing non-linearly. |
| B. | Velocity becomes zero if acceleration becomes zero. |
| C. | Velocity changes non-linearly if acceleration is changing linearly. |
| D. | Velocity becomes uniform if acceleration becomes infinite. |
| Answer» D. Velocity becomes uniform if acceleration becomes infinite. | |
| 505. |
A ball is dropped on to the floor from a height of 20 m. It rebounds to a height of 10 m. If the ball is in contact with the floor for 0.1 seconds, what is the average acceleration during contact? |
| A. | \[\text{142 m }{{\text{s}}^{\text{-2}}}\] |
| B. | \[\text{285 m }{{\text{s}}^{\text{-2}}}\] |
| C. | \[\text{338 m }{{\text{s}}^{\text{-2}}}\] |
| D. | \[\text{564 m }{{\text{s}}^{\text{-2}}}\] |
| Answer» D. \[\text{564 m }{{\text{s}}^{\text{-2}}}\] | |
| 506. |
In the given velocity-time graph, AB shows that the body has |
| A. | Uniform acceleration |
| B. | Uniform retardation |
| C. | Uniform velocity throughout its motion and has zero initial velocity |
| D. | None of these |
| Answer» E. | |
| 507. |
Match the column I with column II and mark the correct option from the codes given below. Column I Column II (a) \[\text{36 km }{{\text{h}}^{\text{-1}}}\] (i) 20000 mm (b) \[\text{1 m }{{\text{s}}^{\text{-2}}}\] (ii) \[\text{980 cm }{{\text{s}}^{\text{-2}}}\] (c) \[\text{9}\text{.8 m}{{\text{s}}^{\text{-2}}}\] (iii) \[\text{12960 km }{{\text{h}}^{\text{-2}}}\] (d) \[\text{0}\text{.02km}\] (iv) \[\text{10 m}{{\text{s}}^{\text{-1}}}\] |
| A. | (a) - (iv), (b) - (iii), (c) - (ii), (d) - (i) |
| B. | (a) - (iii), (b) - (ii), (c) - (i), (d) - (iv) |
| C. | (a) - (ii), (b) - (i), (c) - (iv), (d) - (iii) |
| D. | (a) - (i), (b) - (ii), (c) - (iii), (d) - (iv) |
| Answer» B. (a) - (iii), (b) - (ii), (c) - (i), (d) - (iv) | |
| 508. |
A boy runs for 10 minutes at a uniform speed of \[\text{9 km }{{\text{h}}^{\text{-1}}}\]. At what speed should he run for the next 20 minutes so that the average speed comes to\[\text{12 km }{{\text{h}}^{\text{-1}}}\]? |
| A. | \[\text{13}\text{.5 km }{{\text{h}}^{\text{-1}}}\] |
| B. | \[\text{10}\text{.2 km }{{\text{h}}^{\text{-1}}}\] |
| C. | \[\text{8}\text{.2 km }{{\text{h}}^{\text{-1}}}\] |
| D. | \[\text{7}\text{.72 km }{{\text{h}}^{\text{-1}}}\] |
| Answer» B. \[\text{10}\text{.2 km }{{\text{h}}^{\text{-1}}}\] | |
| 509. |
Unit of acceleration is |
| A. | m/s |
| B. | ms |
| C. | \[\text{m}/{{\text{s}}^{\text{2}}}\] |
| D. | none of these |
| Answer» D. none of these | |
| 510. |
A particle is travelling with a constant speed. What does this mean? |
| A. | The position of the particle remains constant as time passes. |
| B. | The particle covers equal distances in equal time intervals. |
| C. | The acceleration of the particle is zero. |
| D. | The particle does not change its direction of motion. |
| Answer» C. The acceleration of the particle is zero. | |
| 511. |
Initial velocity of a particle moving along a straight line is 10 m/s and its retardation is\[\text{2 m}/{{\text{s}}^{\text{2}}}\]. Distance covered by the particle in the fifth second of its motion is |
| A. | 1 m |
| B. | 19 m |
| C. | 50 m |
| D. | 75 m |
| Answer» B. 19 m | |
| 512. |
A particle starts moving from rest under uniform acceleration. It travels a distance x in the first two seconds and a distance y in the next two seconds. If y = nx, then n=.......... |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 513. |
A body travels 200 cm in the first two seconds and 220 cm in the next 4 seconds with deceleration. The velocity of the body at the end of the 7th second is |
| A. | 20 cm/s |
| B. | 15 cm/s |
| C. | 10 cm/s |
| D. | 0 cm/s |
| Answer» E. | |
| 514. |
The velocity time graphs of a body is as shown. The displacement suffered by it is |
| A. | 300 m |
| B. | 400 m |
| C. | 250 m |
| D. | 200 m |
| Answer» D. 200 m | |
| 515. |
The initial velocity of a particle\[\overrightarrow{u}=\overrightarrow{4i}+\overrightarrow{3j}\]It is moving with uniform acceleration\[\overrightarrow{a}=0.\overrightarrow{4i}+0.\overrightarrow{3}j\] Its velocity after 10 seconds is |
| A. | 3 Units |
| B. | 4 units |
| C. | 5 units |
| D. | 10 units |
| Answer» E. | |
| 516. |
A bus accelerates uniformly from rest and acquires a speed of 36 kmph in 10s. The acceleration is |
| A. | \[\text{1 m}/{{\text{s}}^{\text{2}}}\] |
| B. | \[\text{2 m}/{{\text{s}}^{\text{2}}}\] |
| C. | \[\text{1}/\text{2 m}/{{\text{s}}^{\text{2}}}\] |
| D. | \[\text{3 m}/{{\text{s}}^{\text{2}}}\] |
| Answer» B. \[\text{2 m}/{{\text{s}}^{\text{2}}}\] | |
| 517. |
A car moving with a speed of 50 km/hr can be stopped by brakes after at least 6 m. If the same car is moving at a speed of 100 km/hr, the minimum stopping distance is |
| A. | 12 m |
| B. | 18 m |
| C. | 24 m |
| D. | 6 m |
| Answer» D. 6 m | |
| 518. |
Speeds of two identical cars are u and 4u at a specific instant. The ratio of the respective distances in which the two cars are stopped from that instant is |
| A. | 1 : 1 |
| B. | 1 : 4 |
| C. | 1 : 8 |
| D. | 1 : 16 |
| Answer» E. | |
| 519. |
A car is moving along a straight road with a uniform acceleration. It passes through two points P and Q separated by a certain distance with velocity of 30 kmph and 40 kmph respectively. Velocity of the car, exactly midway between P and Q, is |
| A. | 33.3 kmph |
| B. | 20 kmph |
| C. | 25 kmph |
| D. | 35 kmph |
| Answer» E. | |
| 520. |
A car travelling at a speed of 30 kmph is brought to rest in 8m by applying brakes. If the same car is travelling at 60 kmph, it can be brought to a halt with the same braking force in a distance of: |
| A. | 8 m |
| B. | 16 m |
| C. | 24 m |
| D. | 32 m |
| Answer» E. | |
| 521. |
A car moving at a speed of 20 m/s undergoes uniform retardation of\[\text{5 m}/{{\text{s}}^{\text{2}}}\]. It stops in a time of |
| A. | 100s |
| B. | 4s |
| C. | 3s |
| D. | 5s |
| Answer» C. 3s | |
| 522. |
A point moves with uniform acceleration\[{{v}_{1}},{{v}_{2}}\]and\[{{v}_{3}}\]. Denote the average velocities in three successive intervals of time\[{{t}_{1}},{{t}_{2}}\]and\[{{t}_{3}}\].Correct relation among the following is |
| A. | \[({{v}_{1}}-{{v}_{2}}):({{v}_{2}}-{{v}_{3}})=({{t}_{1}}-{{t}_{2}}):({{t}_{2}}-{{t}_{3}})\] |
| B. | \[({{v}_{1}}-{{v}_{2}}):({{v}_{2}}-{{v}_{3}})=({{t}_{1}}+{{t}_{2}}):({{t}_{2}}+{{t}_{3}})\] |
| C. | \[({{v}_{1}}-{{v}_{2}}):({{v}_{2}}-{{v}_{3}})=({{t}_{1}}-{{t}_{2}}):({{t}_{2}}+{{t}_{3}})\] |
| D. | \[({{v}_{1}}-{{v}_{2}}):({{v}_{2}}-{{v}_{3}})=({{t}_{1}}+{{t}_{2}}):({{t}_{2}}-{{t}_{3}})\] |
| Answer» E. | |
| 523. |
If a body looses half of its velocity on penetrating 3 cm in a wooden block, then how much will it penetrate more before coming to rest |
| A. | 1 cm |
| B. | 2 cm |
| C. | 3 cm |
| D. | 4 cm |
| Answer» B. 2 cm | |
| 524. |
A bus accelerates uniformly from rest and acquires a speed of 75 km/hr in 20 seconds. The acceleration of the bus is |
| A. | \[\text{1}0\text{m}/{{\text{s}}^{\text{2}}}\] |
| B. | \[\text{5m}/{{\text{s}}^{\text{2}}}\] |
| C. | \[\text{2m}/{{\text{s}}^{\text{2}}}\] |
| D. | \[\text{1m}/{{\text{s}}^{\text{2}}}\] |
| Answer» E. | |
| 525. |
Which of the following curves would be obtained on heating solid naphthalene to a temperature which is above its melting point? |
| A. | |
| B. | |
| C. | |
| D. | |
| Answer» B. | |
| 526. |
Which element has neither a definite shape nor volume? |
| A. | Sodium |
| B. | Hydrogen |
| C. | Iodine |
| D. | Lithium |
| Answer» C. Iodine | |
| 527. |
Match column I with column II and choose the correct option from the codes given below. Column I Column II P. Hot tea poured in saucer gets cooled faster. (i) Evaporation increases with increase in temperature Q. We feel more cold after a hot water bath than a cold water bath. (ii) Evaporation increases with decrease in humidity. R. Water is cool in earthen pitcher during dry hot day. (iii) Evaporation increases with increase in wind speed. S. We feel comfortable under a moving fan in summer (iv) Evaporation increases with increase in surface area. |
| A. | P - (ii), Q - (i), R - (iii), S - (iv) |
| B. | P - (iii), Q - (iv), R - (ii), S - (i) |
| C. | P - (iv), Q - (i), R - (ii), S - (iii) |
| D. | P - (iv), Q - (ii), R - (iii), S - (i) |
| Answer» D. P - (iv), Q - (ii), R - (iii), S - (i) | |
| 528. |
Read the given statements and mark the correct option.Statement 1: Solid \[\text{C}{{\text{O}}_{\text{2}}}\] changes its state when exposed to air.Statement 2: \[\text{C}{{\text{O}}_{\text{2}}}\] undergoes sublimation. |
| A. | Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. |
| B. | Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1. |
| C. | Statement 1 is true and statement 2 is false. |
| D. | Both statements 1 and 2 are false. |
| Answer» B. Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1. | |
| 529. |
Which of the following have a regular, repeated molecular pattern and large number of free surfaces in three dimensional space? |
| A. | Solids and liquids |
| B. | Liquids and gases |
| C. | Solids |
| D. | Gases |
| Answer» D. Gases | |
| 530. |
Match the entries in Column I with those in Column II. Column-I Column-II [a] Evaporation 1. Liquid to gas at a fixed temperature [b] Boiling 2. Solid to gas [c] Sublimation 3. Gas to solid [d] Hoar frost 4. Liquid to gas at any temperature |
| A. | a - 4, b - 1, c - 2, d - 3 |
| B. | a - 1, b - 2, c - 3, d - 4 |
| C. | a - 2, b - 3, c - 4, d - 1 |
| D. | a - 4, b - 1, c - 3, d - 2 |
| Answer» B. a - 1, b - 2, c - 3, d - 4 | |
| 531. |
Which one of the following is correct about gas? |
| A. | A gas does not have a fixed shape. |
| B. | A gas does not have fixed volume. |
| C. | A gas can be compressed easily. |
| D. | All the above |
| E. | None of these |
| Answer» E. None of these | |
| 532. |
Sneha set up the experiment for melting of ice in a beaker and noted down the temperature throughout the process. What do you think she observed when the ice was melting? |
| A. | The temperature in the thermometer kept increasing till the whole ice melted. |
| B. | Once the melting process started, the temperature in thermometer remained constant though the heating was on. |
| C. | There was no change in temperature throughout the experiment. |
| D. | Ice did not melt on heating. It was converted to vapours. |
| Answer» C. There was no change in temperature throughout the experiment. | |
| 533. |
What happens to a substance when the space between its particles is decreased? |
| A. | The volume of the substance increases. |
| B. | The volume of the substance decreases. |
| C. | The mass of the substance increases. |
| D. | The mass of the substance decreases. |
| Answer» C. The mass of the substance increases. | |
| 534. |
A medical examination which fine precipitates in urine are to be separated. Which of the following separation methods should be used? |
| A. | Paper chromatography |
| B. | Centrifugation |
| C. | Decantation |
| D. | Separating funnel |
| E. | None of these |
| Answer» C. Decantation | |
| 535. |
What could be the diameters of the molecules of matter? |
| A. | \[{{10}^{-7}}m\] |
| B. | \[{{10}^{-11}}m\] |
| C. | \[{{10}^{-9}}m\] |
| D. | \[{{10}^{-15}}m\] |
| Answer» D. \[{{10}^{-15}}m\] | |
| 536. |
Direction: Study the given graph carefully and answer the following question. What is represented by straight lines QR and ST in the graph? |
| A. | Temperature remains same during the change of state. |
| B. | OR represents latent heat of fusion, while ST represents latent heat of vaporisation. |
| C. | At QR, matter exists in both solid and liquid states, while at ST matter exists in both liquid and gaseous states. |
| D. | All of these. |
| Answer» E. | |
| 537. |
Based on the statements given below choose the correct answer. Some sugar can be added to a glassful of water without causing an overflow. Liquids have spaces present between the molecules |
| A. | \[P\] and \[Q\] are true and \[Q\] explains \[P\]. |
| B. | \[P\] and \[Q\] are true but \[Q\] does not explain\[P\] |
| C. | Only \[P\] is true. |
| D. | Only \[Q\] is true. |
| Answer» B. \[P\] and \[Q\] are true but \[Q\] does not explain\[P\] | |
| 538. |
The figures given below show the state of molecules of different types of matter. Which figure shows that water is being heated? |
| A. | |
| B. | |
| C. | |
| D. | |
| Answer» D. | |
| 539. |
A mixture of water and benzene can be separated by using: |
| A. | Filtration methods |
| B. | Separating funnel methods |
| C. | Centrifugation method |
| D. | Chromatography |
| E. | None of these |
| Answer» C. Centrifugation method | |
| 540. |
Tincture of iodine refers to: |
| A. | Iodine dissolved in milk |
| B. | Iodine dissolved in ethanol |
| C. | Iodine dissolved in copper sulphate solution |
| D. | Iodine dissolved in common salt. |
| E. | None of these |
| Answer» C. Iodine dissolved in copper sulphate solution | |
| 541. |
Which of the following properties is different for solids, liquids and gases? |
| A. | Movement of molecules |
| B. | Particle size of the substance |
| C. | Mass of the substance |
| D. | Energy changes |
| Answer» B. Particle size of the substance | |
| 542. |
Which one of the following will give a true solution when dissolved in water? |
| A. | Chalk |
| B. | Sand |
| C. | Sugar |
| D. | Starch |
| E. | None of these |
| Answer» D. Starch | |
| 543. |
What does conversion of \[475\,\,K\] into celsius scale give? |
| A. | \[{{301.85}^{o}}C\] |
| B. | \[{{273}^{o}}C\] |
| C. | \[{{207}^{o}}C\] |
| D. | \[{{201.85}^{o}}C\] |
| Answer» E. | |
| 544. |
Which one of the following is an example of aerosol? |
| A. | Rubber sponge |
| B. | Ruby |
| C. | Cloud |
| D. | Ink |
| E. | None of these |
| Answer» D. Ink | |
| 545. |
On which of the following factors/ does the molecular arrangement of a substance depend? |
| A. | Temperature and pressure |
| B. | Concentration and temperature |
| C. | Temperature, pressure and concentration |
| D. | Volume and pressure |
| Answer» D. Volume and pressure | |
| 546. |
At what temperature should all the gases occupy zero volume? |
| A. | \[{{0}^{o}}C\] |
| B. | \[-{{273}^{o}}C\] |
| C. | \[{{273}^{o}}C\] |
| D. | \[{{100}^{o}}C\] |
| Answer» C. \[{{273}^{o}}C\] | |
| 547. |
____method is used to separate two miscible liquids. |
| A. | Fractional distillation |
| B. | Magnetic separation |
| C. | Separating funnel |
| D. | Threshing |
| E. | None of these |
| Answer» B. Magnetic separation | |
| 548. |
Which of the following substances can be compressed? |
| A. | Sponge |
| B. | Stone |
| C. | Magnet |
| D. | Diamond |
| Answer» B. Stone | |
| 549. |
Drugs in blood can be separated by which of the following technique? |
| A. | Filtration |
| B. | Paper Chromatography |
| C. | Distillation |
| D. | Threshing |
| E. | None of these |
| Answer» C. Distillation | |
| 550. |
Under what conditions, can a gas be cooled and converted into liquid? |
| A. | At its critical temperature by decreasing pressure on it |
| B. | Above its critical temperature by increasing pressure on it |
| C. | Above its critical temperature by decreasing pressure on it |
| D. | Below its critical temperature by increasing pressure on it |
| Answer» E. | |