MCQOPTIONS
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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.
| 201. |
What is the minimum distance between two crests called? |
| A. | Wavelength |
| B. | Amplitude |
| C. | Displacement |
| D. | Wave pulse |
| Answer» B. Amplitude | |
| 202. |
The relative mass of electron is; |
| A. | +1 |
| B. | -1 |
| C. | 0 |
| D. | \[\frac{1}{1840}\] |
| E. | None of these |
| Answer» E. None of these | |
| 203. |
The diagram shows an object released from point X and travelling on a frictionless track. If a heavier object is taken in consideration then (i) It will move with a greater speed at Y.(ii) The speed of the object at M is\[10\text{ m}{{\text{s}}^{-1}}\]. |
| A. | Only (i) is true. |
| B. | Only (ii) is true. |
| C. | Both (i) and (ii) are true. |
| D. | Neither (i) nor (ii) is true. |
| Answer» C. Both (i) and (ii) are true. | |
| 204. |
The diagram shows a cyclist moving down a small hill at P before travelling on a flat road at Q. The total mass of the cyclist and his bicycle is 60 kg and the speed of the cyclist at P is\[10\text{ m}{{\text{s}}^{-1}}\].Which of the following is incorrect? |
| A. | The kinetic energy at P is 3000 J. |
| B. | The loss of gravitational energy between P and Q is 1800 J. |
| C. | Total energy is 4800 J. |
| D. | The cyclist does not require a greater power when he travels at a higher constant speed. |
| Answer» E. | |
| 205. |
If an electric tubelight of 40 watt is lighted for 3 hours daily, how much KWh energy would be consumed? |
| A. | 120 Kwh |
| B. | 1200 Kwh |
| C. | 0.12 Kwh |
| D. | 13.6 Kwh |
| E. | None of these |
| Answer» D. 13.6 Kwh | |
| 206. |
The \[\frac{e}{m}\] ratio of an electron for all types of substances is |
| A. | constant |
| B. | less than one |
| C. | greater than one |
| D. | zero |
| Answer» B. less than one | |
| 207. |
In which one of the following situation the potential energy of the spring will be minimum? |
| A. | Compressed |
| B. | Extended |
| C. | In its original shape |
| D. | Neither |
| E. | None of these |
| Answer» D. Neither | |
| 208. |
Read the given statements and mark the correct option. Statement 1: Bohr's orbits are called stationary orbits. Statement 2: Electrons remain stationary in these orbits for some time. |
| 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» D. Both statements 1 and 2 are false. | |
| 209. |
A tuning fork of frequency \[420\,\,Hz\] completes \[70\] vibrations. Find the distance travelled by sound in air.\[(v=360\,\,m\,\,{{s}^{-1}})\] |
| A. | \[20\,\,m\] |
| B. | \[50\,\,m\] |
| C. | \[60\,\,m\] |
| D. | \[80\,\,m\] |
| Answer» D. \[80\,\,m\] | |
| 210. |
How much work is done by a force of ION in moving a body through a distance of 2m in its own direction? |
| A. | 20 J |
| B. | 24 J |
| C. | 26 J |
| D. | 30 J |
| Answer» B. 24 J | |
| 211. |
A rope ladder with a length 1 carrying a man with a mass m at its end is attached to the basket of balloon with a mass M. The entire system if equilibrium in the air. As the man climbs up the ladder into the balloon, the balloon descend by a height h. Then the potential energy of the man |
| A. | increases by \[mg\]\[\left( \text{1}-\text{h} \right)\] |
| B. | increases b \[mgl\] |
| C. | increases by \[mgh\] |
| D. | increases by mg \[(2l-h)\] |
| Answer» B. increases b \[mgl\] | |
| 212. |
Where do we found areola connective tissue in our body? |
| A. | Cortex |
| B. | Skin and Muscles |
| C. | Blood Vessel |
| D. | Muscles |
| E. | None of these |
| Answer» C. Blood Vessel | |
| 213. |
The chemical name for \[N{{a}_{2}}{{S}_{2}}{{O}_{3}}\] is: |
| A. | (a) Sodium sulphate |
| B. | (b) Sodium sulphurous oxide |
| C. | (c) Sodium bi sulphate |
| D. | (d) Sodium thiosulphate |
| E. | (e) None of these |
| Answer» E. (e) None of these | |
| 214. |
Identify X and Y in the given figure. |
| A. | X Y Tissues Organs |
| B. | X Y Organs Tissues |
| C. | X Y Nervous tissue Connective tissue |
| D. | X Y Lung cells Reproductive |
| Answer» B. X Y Organs Tissues | |
| 215. |
Which of these characteristics are true about 'X'? |
| A. | Cylindrical, syncytial, unbranched and voluntary |
| B. | Cylindrical, striped, nucleated and voluntary |
| C. | Cylindrical, striped, branched and involuntary |
| D. | Spindle, unbranched, uninucleated and involuntary |
| Answer» E. | |
| 216. |
Matrix matching (a) Hz (p) Wavelength (b) \[f\times \lambda \] (q) frequency (c) \[\lambda /T\] (r) Velocity (d) meter (s) Amplitude |
| A. | a-q; b-q; c-p; d-p |
| B. | a-q; b-r, c-r, d-s |
| C. | a-q; b-r; c-r; d-s |
| D. | a-q; b-s; c-s; d-p |
| Answer» C. a-q; b-r; c-r; d-s | |
| 217. |
An echo returned in 3s. What is the distance of the reflecting surface from the source, given that the speed of sound is 342 m/s? |
| A. | 520 m |
| B. | 515 m |
| C. | 530 m |
| D. | 513 m |
| Answer» E. | |
| 218. |
A boy standing 70m from a high wall claps his hands. After how much time is an echo heard? (The speed of sound in air is\[\text{35}0\text{ m}{{\text{s}}^{-\text{1}}}\]) |
| A. | 4 s |
| B. | 0.4 s |
| C. | 104 s |
| D. | 1.2 s |
| Answer» C. 104 s | |
| 219. |
Velocity of sound in air is about |
| A. | 330 m/s |
| B. | 300 m/s |
| C. | 270 m/s |
| D. | 180 m/s |
| Answer» B. 300 m/s | |
| 220. |
A ball of mass m is thrown vertically upwards. What is the rate at which the momentum of the ball changes? |
| A. | Zero |
| B. | Infinity |
| C. | Mg |
| D. | Data is not sufficient |
| E. | None of these |
| Answer» D. Data is not sufficient | |
| 221. |
Observe the given figures of three different plant tissues and select the correct option. |
| A. | a and b consist of living cells while c consists of dead cells. |
| B. | Cytoplasm is present in cells of a while it is absent in cells of b and c. |
| C. | Cell walls of a, b and c bear uniform thickening of suberin. |
| D. | a provides mechanical strength to the plant while b and c serve as storage tissues. |
| Answer» B. Cytoplasm is present in cells of a while it is absent in cells of b and c. | |
| 222. |
Frequency of the sinusoidal wave, \[y=0.40\,\,\cos \,\,(2000t+0.080)\]would be |
| A. | \[\text{1}00\text{ 7}\pi \text{ Hz}\] |
| B. | \[\text{2000}\,\,\text{Hz}\] |
| C. | \[\text{20}\,\,\text{Hz}\] |
| D. | \[\frac{1000}{\pi }\,\,\text{Hz}\] |
| Answer» E. | |
| 223. |
A mechanical wave travels in a medium. Which of the following quantities is transferred from one place to another with the wave? |
| A. | Mass |
| B. | Speed |
| C. | Density |
| D. | Energy |
| Answer» E. | |
| 224. |
An ultrasonic wave is sent from a ship towards the bottom of the sea. It is found that the time interval between the sending and receiving of the wave is 1.6 s. What is the depth of the sea, if the velocity of sound in the seawater is 1400 m/s? |
| A. | 980 m |
| B. | 1240 m |
| C. | 1054 m |
| D. | 1120 m |
| E. | None of these |
| Answer» E. None of these | |
| 225. |
The total number of electrons in a nitrogen atom and a chlorine atom are \[7\] and \[17\] respectively. Find the number of valence electrons in them. |
| A. | \[3,\,\,1\] |
| B. | \[5,\,\,8\] |
| C. | \[4,\,\,1\] |
| D. | \[5,\,\,7\] |
| Answer» E. | |
| 226. |
The kinetic energy of a body is increased by\[21%\]. What is the percentage increase in the linear momentum of the body? |
| A. | \[20%\] |
| B. | \[10%\] |
| C. | \[30%\] |
| D. | \[5%\] |
| Answer» C. \[30%\] | |
| 227. |
The disease for which symptoms are fever, delirium, slow pulse, rose colored rash and abdominal tenderness is: |
| A. | Typhoid |
| B. | Tetanus |
| C. | Cholera |
| D. | Measles |
| E. | None of these |
| Answer» B. Tetanus | |
| 228. |
Identify the non metal which is lustrous. |
| A. | Sulphur |
| B. | Graphite |
| C. | Iodine |
| D. | Phosphorus |
| E. | None of these |
| Answer» D. Phosphorus | |
| 229. |
Maximum number of \[4f\] electrons that can have \[s=-\frac{1}{2}\] values, is |
| A. | 14 |
| B. | 7 |
| C. | 5 |
| D. | 10 |
| Answer» C. 5 | |
| 230. |
Clapping of our hands produces |
| A. | transverse waves |
| B. | light waves |
| C. | periodic waves |
| D. | pulse |
| Answer» E. | |
| 231. |
Two bodies of masses\[{{m}_{1}}\]and\[{{m}_{2}}\] have equal momenta. Their kinetic energies are in the ratio of |
| A. | \[\sqrt{{{m}_{1}}}:\sqrt{{{m}_{2}}}\] |
| B. | \[{{m}_{1}}:{{m}_{2}}\] |
| C. | \[{{m}_{2}}:{{m}_{1}}\] |
| D. | \[{{m}_{1}}^{2}:{{m}_{2}}^{2}\] |
| Answer» D. \[{{m}_{1}}^{2}:{{m}_{2}}^{2}\] | |
| 232. |
In a cloud, lightning and thunder are produced simultaneously. If thunder is heard by a man 5 seconds after the lightening is seen, how far the cloud is from the man? (Speed of sound in air = 340 m/s) |
| A. | 1500 m |
| B. | 1600 m |
| C. | 1700 m |
| D. | 1800 m |
| E. | None of these |
| Answer» D. 1800 m | |
| 233. |
In a rocket, fuel burns at the rate of\[1\,Kg\,{{s}^{-1}}\]. This fuel is ejected from the rocket with a velocity of\[60\,Km{{s}^{-1}}\]. This exerts a force, in newton, on the rocket of |
| A. | \[60\,N\] |
| B. | \[600\,N\] |
| C. | \[6,000\,N\] |
| D. | \[60,000\,N\] |
| Answer» E. | |
| 234. |
The amount of heat required to change one form of matters to other without changing the temperature is called: |
| A. | Latent heat |
| B. | Fusion |
| C. | Sublimation |
| D. | Evaporation |
| E. | None of these |
| Answer» B. Fusion | |
| 235. |
An engine can pump \[40,000\] litres of water to a vertical height of \[35\] metres in \[5\] minutes. Calculate the gravitational potential energy of water at the given height. |
| A. | \[39.2\times {{10}^{4}}J\] |
| B. | \[1.4\times {{10}^{6}}J\] |
| C. | \[1.37\times {{10}^{7}}J\] |
| D. | \[8.5\times {{10}^{-3}}J\] |
| Answer» D. \[8.5\times {{10}^{-3}}J\] | |
| 236. |
A body of mass 1 kg is projected vertically up with certain velocity. At certain point its P.E and K.E are 8J and 90J. Then maximum height reached by it is(\[\text{g}=\text{9}.\text{8 m}/{{\text{s}}^{\text{2}}}\]) |
| A. | 1 m |
| B. | 10 m |
| C. | 0.1 m |
| D. | 100 m |
| Answer» C. 0.1 m | |
| 237. |
What does the mass number of an atom represent? |
| A. | Only the number of protons |
| B. | The number of protons and neutrons |
| C. | The number of protons and electrons |
| D. | Only the number of neutrons |
| Answer» C. The number of protons and electrons | |
| 238. |
An atom has mass number 23 and atomic number\[11\]. How many protons, electrons and neutrons are present in the atom? |
| A. | \[11,\,\,12,\,\,13\] |
| B. | \[11,\,\,11,\,\,12\] |
| C. | \[11,\,\,11,\,\,13\] |
| D. | \[11,\,\,14,\,\,15\] |
| Answer» C. \[11,\,\,11,\,\,13\] | |
| 239. |
Identify the tissue that transports water to the plant body. |
| A. | Xylem |
| B. | Phloem |
| C. | Cambium |
| D. | all of these |
| Answer» B. Phloem | |
| 240. |
According to uncertainty principle |
| A. | \[E=h\upsilon \] |
| B. | \[\lambda =\frac{h}{p}\] |
| C. | \[\Delta x\times \Delta p=\frac{h}{4\pi }\] |
| D. | \[\Delta x\times \Delta p=\frac{h}{2\pi }\] |
| Answer» D. \[\Delta x\times \Delta p=\frac{h}{2\pi }\] | |
| 241. |
A body is moved along a straight line by a machine delivering constant power. The distance moved by the body in time t is proportional to |
| A. | \[{{t}^{\frac{3}{2}}}\] |
| B. | \[{{t}^{\frac{1}{2}}}\] |
| C. | \[{{t}^{\frac{3}{4}}}\] |
| D. | \[{{t}^{2}}\] |
| Answer» B. \[{{t}^{\frac{1}{2}}}\] | |
| 242. |
Martin put some petrol in a saucer and left open in the garage. Next day when he went to garage he found that there was no petrol left in it. What might have happened to the petrol? |
| A. | Evaporated |
| B. | Leaked away |
| C. | Stolen |
| D. | Both A and B are correct |
| Answer» B. Leaked away | |
| 243. |
Number of electrons in the outer shell of the most stable or inert atoms is |
| A. | 1 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» E. | |
| 244. |
Which one of the following is an example of mechanical wave? |
| A. | Radio wave |
| B. | Light wave |
| C. | Infrared radiation |
| D. | Sound wave |
| E. | None of these |
| Answer» E. None of these | |
| 245. |
Four different waves labeled I, II, III, and IV are shown in the given table. Which wave has the highest amplitude? |
| A. | I |
| B. | II |
| C. | III |
| D. | IV |
| Answer» E. | |
| 246. |
Select the correct statement regarding meristematic tissues. |
| A. | They are found at specific locations in the animal body. |
| B. | They have cells with thick secondary walls. |
| C. | They perform the function of growth and division. |
| D. | Both (a) and (c) |
| Answer» D. Both (a) and (c) | |
| 247. |
An anti-aircraft shell has been fired and it has a kinetic energy\[x\]. It explodes in the air. Then the sum of kinetic energies of all the particles is |
| A. | \[x\] |
| B. | more than \[x\] |
| C. | less than \[x\] |
| D. | zero |
| Answer» C. less than \[x\] | |
| 248. |
We can prevent a disease by: |
| A. | Preventing exposure to infectious microbes. |
| B. | Providing proper and sufficient food. |
| C. | Immunization |
| D. | All the above |
| E. | None of these |
| Answer» E. None of these | |
| 249. |
A stone is projected vertically up to reach a maximum height h. The ratio of its K.E. to P.E, at a height\[\frac{4h}{5}\]will be |
| A. | 5 : 4 |
| B. | 4 : 5 |
| C. | 1 : 4 |
| D. | 4 : 1 |
| Answer» D. 4 : 1 | |
| 250. |
Which one of the following is the molecular formula for zinc phosphate? |
| A. | (a) \[Z{{n}_{3}}P{{O}_{4}}\] |
| B. | (b) \[ZnP{{O}_{4}}\] |
| C. | (c) \[Z{{n}_{3}}\,{{(P{{O}_{4}})}_{3}}\] |
| D. | (d) \[Zn{{(P{{O}_{4}})}_{3}}\] |
| E. | (e) None of these |
| Answer» D. (d) \[Zn{{(P{{O}_{4}})}_{3}}\] | |