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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.
| 1251. |
If a force of 250 N act on body, the momentum acquired is 125 kg m/s, what is the period for which force acts on the body? |
| A. | 0.5s |
| B. | 0.2s |
| C. | 0.4s |
| D. | 0.25s |
| E. | (e) \[\text{125}\times \text{25}0\text{s}\] |
| Answer» B. 0.2s | |
| 1252. |
A bullet of mass 0.1 kg ks fired with a speed of 100 m/s, the mass of gun 50 kg. The velocity of recoil is |
| A. | 0.2 m/s |
| B. | 0.1 m/s |
| C. | 0.5 m/s |
| D. | 0.05 m/s |
| Answer» B. 0.1 m/s | |
| 1253. |
In a rocket of mass 1000 kg fuel is consumed at a rate of 40 kg/s. The velocity of the gas ejected from the rocket is \[\text{5}\times \text{1}{{0}^{\text{4}}}\] m/s. The thrust on the rocket is |
| A. | \[2\times {{10}^{3}}N\] |
| B. | \[5\times {{10}^{4}}N\] |
| C. | \[2\times {{10}^{6}}N\] |
| D. | \[2\times {{10}^{8}}N\] |
| Answer» D. \[2\times {{10}^{8}}N\] | |
| 1254. |
A person is sitting in a travelling train and facing the engine. He tosses up a coin and the coin falls behind him. It can be concluded that the train is |
| A. | Moving forward and gaining speed |
| B. | Moving forward and losing speed |
| C. | Moving forward with uniform speed |
| D. | Moving backward with uniform |
| Answer» B. Moving forward and losing speed | |
| 1255. |
A body of weight \[{{w}_{1}}\]is suspended from the ceiling of a room through a chain of weight\[{{w}_{2}}.\]The ceiling pulls the chain by a force. |
| A. | \[{{w}_{1}}\] |
| B. | \[{{w}_{2}}\] |
| C. | \[{{w}_{1}}+{{w}_{2}}\] |
| D. | \[\frac{{{w}_{1}}+{{w}_{2}}}{2}\] |
| Answer» D. \[\frac{{{w}_{1}}+{{w}_{2}}}{2}\] | |
| 1256. |
If the two bodies are in contact, the force exists between these two bodies are |
| A. | Gravitational force |
| B. | Electrostatic force |
| C. | Normal force |
| D. | None of these |
| Answer» D. None of these | |
| 1257. |
When two bodies of masses\[{{m}_{1}}\]and\[{{m}_{2}}\]moving with velocities\[{{u}_{1}}\]and\[{{u}_{2}}\]in the opposite direction collide with each other and move together after collision in the same direction with a common velocity v, then |
| A. | \[{{m}_{1}}{{u}_{1}}+{{m}_{2}}{{u}_{2}}={{m}_{1}}v+{{m}_{2}}v\] |
| B. | \[{{m}_{2}}{{u}_{1}}-{{m}_{1}}{{u}_{2}}=({{m}_{1}}+{{m}_{2}})v\] |
| C. | \[{{m}_{1}}{{u}_{1}}-{{m}_{2}}{{u}_{2}}=({{m}_{1}}-{{m}_{2}})v\] |
| D. | \[v=\frac{{{m}_{1}}{{u}_{1}}-{{m}_{2}}{{u}_{2}}}{{{m}_{1}}+{{m}_{2}}}\] |
| Answer» E. | |
| 1258. |
When two bodies of masses \[{{m}_{1}}\]and \[{{m}_{2}}\]moving with velocities \[{{u}_{1}}\]and \[{{u}_{2}}\]in the same direction collide with each other and \[{{v}_{1}}\]and\[{{v}_{2}}\] are their velocities after collision in the same direction, then |
| A. | \[{{m}_{1}}{{v}_{1}}+{{m}_{2}}{{v}_{2}}={{m}_{2}}{{u}_{2}}-{{m}_{1}}{{u}_{1}}\] |
| B. | \[{{m}_{1}}{{v}_{1}}+{{m}_{2}}{{v}_{2}}={{m}_{1}}{{u}_{1}}-{{m}_{2}}{{u}_{2}}\] |
| C. | \[{{m}_{2}}{{v}_{2}}+{{m}_{2}}{{u}_{1}}={{m}_{2}}{{v}_{1}}+{{m}_{1}}{{v}_{2}}\] |
| D. | \[{{m}_{1}}{{u}_{1}}+{{m}_{2}}{{u}_{2}}={{m}_{1}}{{v}_{1}}+{{m}_{2}}{{v}_{2}}\] |
| Answer» E. | |
| 1259. |
If a man jumps out from a boat, the boat moves |
| A. | Forward |
| B. | Sideward |
| C. | Backward |
| D. | Downward |
| Answer» D. Downward | |
| 1260. |
Which of the following are the characteristics of kingdom Protista? |
| A. | Multicellular organisms whose chromosomes are not enclosed in a nuclear membrane |
| B. | Unicellular organisms whose chromosomes are not enclosed in a nuclear membrane |
| C. | Unicellular organisms whose chromosomes are enclosed in a nuclear membrane |
| D. | Multicellular organisms whose chromosomes are enclosed in a nuclear membrane |
| Answer» D. Multicellular organisms whose chromosomes are enclosed in a nuclear membrane | |
| 1261. |
Suppose you accidently find an old preserved permanent slide without a label. In order to identify it, you place the slide under microscope and observe the following features: (i) Unicellular (ii) Well defined nucleus (iii) Biflagellate - one long flagellum, lying longitudinally and the other short flagellum. What would you identify it as? Also name the kingdom it belongs to. |
| A. | Diatom ; Fungi |
| B. | Trypanosoma ; Protozoa |
| C. | Paramecium ; Protozoa |
| D. | Euglena ; Protista |
| Answer» E. | |
| 1262. |
Which one of the following is correct about the kingdom fungi? |
| A. | Simple non-green plants |
| B. | Heterotrophic |
| C. | Eukaryotic organisms |
| D. | All the above |
| E. | None of these |
| Answer» E. None of these | |
| 1263. |
Which of the following pairs of organisms and their characteristic features is wrongly paired? |
| A. | Earthworm-annelida, in vertebrata, setae |
| B. | Butterfly-insecta, in vertebrata, arthropoda |
| C. | Snail-annelida, in vertebrata, muscular foot |
| D. | Paramecium-cilia, protozoa, lacks cell wall |
| Answer» D. Paramecium-cilia, protozoa, lacks cell wall | |
| 1264. |
________ is one of the basis for classification of plants. |
| A. | Presence or absence of vascular tissue |
| B. | Production of seeds |
| C. | Symmetry |
| D. | Both (a) and (b) |
| Answer» E. | |
| 1265. |
Which of these is the largest living invertebrate phylum? |
| A. | Arthropoda |
| B. | Annelida |
| C. | Mollusca |
| D. | Echinodermata |
| Answer» B. Annelida | |
| 1266. |
Which of the following is an egg-laying mammal? |
| A. | Duck-billed platypus |
| B. | Kangaroo |
| C. | Whale |
| D. | Bat |
| Answer» B. Kangaroo | |
| 1267. |
Which of these is the broadest category of an organism in biological taxonomy? |
| A. | The phylum |
| B. | The class |
| C. | The kingdom |
| D. | The family |
| Answer» D. The family | |
| 1268. |
Which of the following kingdoms is intermediate between kingdom monera and multicellular organisms? |
| A. | Fungi |
| B. | Animalia |
| C. | Plantae |
| D. | Protista |
| Answer» E. | |
| 1269. |
Which of the following bears flowers? |
| A. | Fern |
| B. | Mushroom |
| C. | Mould |
| D. | Paddy |
| Answer» E. | |
| 1270. |
Which of these statements describes dicotyledons? |
| A. | They have tap roots |
| B. | Their leaves have network of veins |
| C. | They are flowering plants |
| D. | all of these |
| Answer» E. | |
| 1271. |
Unicellular algae belongs from which one of the following kingdom? |
| A. | Monera |
| B. | Fungi |
| C. | Protista |
| D. | Mammalia |
| E. | None of these |
| Answer» D. Mammalia | |
| 1272. |
Which of the following does not make a criterion for classification of animals? |
| A. | Body cavity organisation |
| B. | Symmetry |
| C. | Cell wall structure |
| D. | Presence or absence of notochord |
| Answer» D. Presence or absence of notochord | |
| 1273. |
Which of the following kingdoms comprise algae? |
| A. | Monera |
| B. | Animalia |
| C. | Plantae |
| D. | Fungi |
| Answer» D. Fungi | |
| 1274. |
Which of the following phyla includes diploblastic, aquatic animals with tissue grade of organization? |
| A. | Protozoa |
| B. | Porifera |
| C. | Cnidaria |
| D. | Helminthes |
| Answer» D. Helminthes | |
| 1275. |
Which of these classes of animals have dry scaly skin, internal fertilisation and are cold blooded animals? |
| A. | Aves |
| B. | Amphibians |
| C. | Pisces |
| D. | Reptiles |
| Answer» E. | |
| 1276. |
Which one among the following produce seeds? |
| A. | Pteridophytes |
| B. | Bryophytes |
| C. | Angiosperms |
| D. | Thallophytes |
| E. | None of these |
| Answer» D. Thallophytes | |
| 1277. |
Which is a free - living platyhelminthes? |
| A. | Planaria |
| B. | Fasciola |
| C. | Taenia |
| D. | Schistosoma |
| Answer» B. Fasciola | |
| 1278. |
Which one of the following has two-chambered heart? |
| A. | Toads |
| B. | Rohu |
| C. | Ostrich |
| D. | Rat |
| E. | None of these |
| Answer» C. Ostrich | |
| 1279. |
Which of these kingdoms contains unicellular animals? |
| A. | Eubacteria |
| B. | Archaebacteria |
| C. | Fungi |
| D. | Protista |
| Answer» E. | |
| 1280. |
Which one of the following belongs to group pisces? |
| A. | Toad |
| B. | Chiton |
| C. | Anabas |
| D. | Asterias |
| E. | None of these |
| Answer» D. Asterias | |
| 1281. |
Which one among the following is incorrect about classification of organisms? |
| A. | Helps in the systematic study of organisms. |
| B. | Establishes the relations between organisms. |
| C. | Class is the basic unit of classification. |
| D. | Classification gives an index of diversity. |
| E. | None of these |
| Answer» D. Classification gives an index of diversity. | |
| 1282. |
Which of these move with the help of pseudopodia? |
| A. | Paranecium |
| B. | Euglena |
| C. | Amoeba |
| D. | Plasmodium |
| Answer» D. Plasmodium | |
| 1283. |
Organisms belonging to same orders are grouped into a ____. |
| A. | Class |
| B. | Genus |
| C. | Family |
| D. | Kingdom |
| E. | None of these |
| Answer» B. Genus | |
| 1284. |
Which is not an amphibian? |
| A. | Lizard |
| B. | Frog |
| C. | Salamander |
| D. | Newt |
| Answer» B. Frog | |
| 1285. |
Which of these groups of words means the same thing? |
| A. | Autotrophs and consumers |
| B. | Autotrophs and producers |
| C. | Heterotrophs and producers |
| D. | Autotrophs and carnivore |
| Answer» C. Heterotrophs and producers | |
| 1286. |
Which of the following comes in the category of monera? |
| A. | Mushrooms |
| B. | Corals |
| C. | Euglena |
| D. | Bacteria |
| E. | None of these |
| Answer» D. Bacteria | |
| 1287. |
Which of the following are the characteristic features of cnidaria? |
| A. | Radial symmetry, acoelomate and diploblastic body |
| B. | Bilateral symmetry, un segmented and diploblastic body |
| C. | Triploblastic and coelomate body |
| D. | Radial symmetry, coelomate and triploblastic body |
| Answer» C. Triploblastic and coelomate body | |
| 1288. |
Which one of the following features does not belong to phylum mollusca? |
| A. | Body is bilaterally symmetrical. |
| B. | They have a closed circulatory system. |
| C. | Body is often protected by a hard calcareous shell. |
| D. | They have kidney- like organ for excretion. |
| E. | None of these |
| Answer» C. Body is often protected by a hard calcareous shell. | |
| 1289. |
Which of these contain highly evolved plants in the plant kingdom? |
| A. | Bryophytes |
| B. | Pteridophytes |
| C. | Angiosperms |
| D. | Gymnosperms |
| Answer» D. Gymnosperms | |
| 1290. |
Which of these is the most suitable description about phylum Platyhelminthes? |
| A. | A group of triploblastic, radially symmetrical, pseudo coelornate animals. |
| B. | A group of triploblastic/bilaterally symmetrical, acoelomate animals. |
| C. | A group of triploblastic, radially symmetrical, tricoelomate animals. |
| D. | A group of triploblastic, bilaterally symmetrical, schizocoelomate animals. |
| Answer» C. A group of triploblastic, radially symmetrical, tricoelomate animals. | |
| 1291. |
Which one of the following is not a layer of cells? |
| A. | Ectoderm |
| B. | Lactoderm |
| C. | Mesoderm |
| D. | Endoderm |
| E. | None of these |
| Answer» C. Mesoderm | |
| 1292. |
Which is a diploblastic animal? |
| A. | Hydra |
| B. | Leech |
| C. | Ascaris |
| D. | Fasciola |
| Answer» B. Leech | |
| 1293. |
Which one among the following has cellular level of organisation? |
| A. | Coelenterates |
| B. | Arthropodes |
| C. | Porifera |
| D. | Mollusca |
| E. | None of these |
| Answer» D. Mollusca | |
| 1294. |
Which of the following organisms has the water vascular system as a distinctive feature? |
| A. | Echinodermata |
| B. | Annelida |
| C. | Chordata |
| D. | Mollusca |
| Answer» B. Annelida | |
| 1295. |
Which among the following is cold-blooded? |
| A. | Amphibians |
| B. | Reptiles |
| C. | Aves |
| D. | Both [a] and [b] |
| E. | None of these |
| Answer» E. None of these | |
| 1296. |
Which of the following statements is true about planaria? |
| A. | This animal is covered with a hard outside layer. |
| B. | There is no segmentation of its flat body and it lives as a parasites |
| C. | The body is made up of two layers. |
| D. | There are holes and segments all over the body. |
| Answer» C. The body is made up of two layers. | |
| 1297. |
Starfish belongs to which of the following phylum? |
| A. | Mollusca |
| B. | Echinodermata |
| C. | Arthropoda |
| D. | Pisces |
| E. | None of these |
| Answer» C. Arthropoda | |
| 1298. |
Which of the following statements is true about sponges? |
| A. | They have the water vascular system. |
| B. | They have numerous pores on their body. |
| C. | They have a cavity in the body. |
| D. | Their body is made up of two layers. |
| Answer» C. They have a cavity in the body. | |
| 1299. |
Which of the following is not one of the five kingdoms of R.H. Whittaker's classification system? |
| A. | Animalia |
| B. | Monera |
| C. | Protista |
| D. | Chordata |
| Answer» E. | |
| 1300. |
What is the function of the part labelled \[P\] in the given figure? |
| A. | Nutrition |
| B. | Respiration |
| C. | Osmoregulation |
| D. | Both [a] and [b] |
| Answer» D. Both [a] and [b] | |