MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 1489 Mcqs, each offering curated multiple-choice questions to sharpen your 8th Class knowledge and support exam preparation. Choose a topic below to get started.
| 1201. |
Why are cans used for storing soft drinks or food items usually electroplated with tin? |
| A. | Tin is less reactive than the metal the can is made of. |
| B. | Tin is cheap. |
| C. | Tin is strong and shiny in appearance |
| D. | Tin is lighter than other metals. |
| Answer» B. Tin is cheap. | |
| 1202. |
The given figure represents the various zones of a candle flame. The information in which alternative correctly labels the given figure? |
| A. | i Ii iii Hottest Least hot Moderately hot |
| B. | i ii iii Hottest Moderately hot Least hot |
| C. | i ii iii Least hot Moderately hot Hottest |
| D. | i ii iii Least hot Hottest Moderately hot |
| Answer» C. i ii iii Least hot Moderately hot Hottest | |
| 1203. |
Which of the following statements is correct? |
| A. | Liquefied Petroleum gas is a better domestic fuel than wood. |
| B. | Fire produced by kerosene oil can be controlled using water. |
| C. | A fuel can be heated to any temperature before it starts burning. |
| D. | Water is used to control fires involving electrical equipment?s. |
| Answer» B. Fire produced by kerosene oil can be controlled using water. | |
| 1204. |
What do fuels combine with to produce heat and light? |
| A. | \[C{{O}_{2}}\] |
| B. | CO |
| C. | \[{{H}_{2}}\] |
| D. | \[{{O}_{2}}\] |
| Answer» E. | |
| 1205. |
Read the given statements and select the correct options. Statement 1: Kerosene oil and wood do not catch fire on their own at room temperature. Statement 2: A combustible material cannot catch fire as long as its temperature is lower than its ignition temperature. |
| 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. | |
| 1206. |
One gram of which of these will give out the maximum amount of heat by complete combustion? |
| A. | Wood |
| B. | Coal |
| C. | Diesel |
| D. | Biogas |
| Answer» D. Biogas | |
| 1207. |
Which one among the following is not an inexhaustible natural resource |
| A. | Sunlight |
| B. | Water |
| C. | Air |
| D. | Petrol |
| E. | None of these |
| Answer» E. None of these | |
| 1208. |
Two plane mirrors MN and NO are kept at right angle to each other as shown in the given figure. A ray of light CD is incident on the mirror MN and the angle of incidence is\[{{50}^{o}}\]. What will be the angle of reflection for the mirror NO. |
| A. | \[{{50}^{o}}\] |
| B. | \[{{60}^{o}}\] |
| C. | \[{{30}^{o}}\] |
| D. | \[{{40}^{o}}\] |
| E. | None of these |
| Answer» E. None of these | |
| 1209. |
Galvanization involves the coating of which metal over steel or iron? |
| A. | Chromium |
| B. | Copper |
| C. | Zinc |
| D. | Brick |
| E. | None of these |
| Answer» D. Brick | |
| 1210. |
Highly inflammable substances: |
| A. | Have high ignition temperature |
| B. | Have low ignition temperature |
| C. | Cannot catch fire easily |
| D. | Both [b] and [c] |
| E. | None of these |
| Answer» C. Cannot catch fire easily | |
| 1211. |
Product formed after complete combustion of methane is: |
| A. | Carbon dioxide |
| B. | Carbon |
| C. | Carbon monoxide |
| D. | Charcoal |
| E. | None of these |
| Answer» D. Charcoal | |
| 1212. |
Deforestation increases the level of ___ in the atmosphere. |
| A. | Nitrogen |
| B. | Carbon dioxide |
| C. | Oxygen |
| D. | Fluorine |
| E. | None of these |
| Answer» C. Oxygen | |
| 1213. |
Project Tiger started as the tigers have become an ____ species. |
| A. | Endemic |
| B. | Endangered |
| C. | Extinct |
| D. | Exotic |
| E. | None of these |
| Answer» C. Extinct | |
| 1214. |
A bulb does not glow when the probe are hanging in air. Why? |
| A. | Air absorbs electricity. |
| B. | Air is a bad conductor of electricity. |
| C. | Electricity is discharged into air. |
| D. | Air disperses electricity. |
| Answer» C. Electricity is discharged into air. | |
| 1215. |
LPG mainly consists of: (i) Propane (ii) Methane (iii) Butane (iv) Ethane |
| A. | (i) and (ii) |
| B. | (ii)and(iii) |
| C. | (i) and (iii) |
| D. | (i)and (iv) |
| E. | None of these |
| Answer» D. (i)and (iv) | |
| 1216. |
Which of the following solutions will not make the bulb glow placed in an electric circuit? |
| A. | Sulphuric acid solution |
| B. | Sodium chloride solution |
| C. | Silver nitrate |
| D. | Sugar solution in diluted water |
| E. | None of these |
| Answer» E. None of these | |
| 1217. |
Hole present at the center of iris called: |
| A. | Retina |
| B. | Blind spot |
| C. | Pupil |
| D. | Eye lens |
| E. | None of these |
| Answer» D. Eye lens | |
| 1218. |
The variety of life on the earth is referred as: |
| A. | Biosphere |
| B. | Ecosystem |
| C. | Biodiversity |
| D. | Zoo |
| E. | None of these |
| Answer» D. Zoo | |
| 1219. |
When no member of a species exists, it is known as: |
| A. | Endemic species |
| B. | Endangered species |
| C. | Extinct species |
| D. | Exotic species |
| E. | None of these |
| Answer» D. Exotic species | |
| 1220. |
Part of the earth which supports life where living being exists is called. |
| A. | Biology |
| B. | Zoology |
| C. | Biosphere |
| D. | Biodiversity |
| E. | None of these |
| Answer» D. Biodiversity | |
| 1221. |
When a ray of light falls normally on a plane mirror, then the angle of incidence is: |
| A. | \[{{30}^{o}}\] |
| B. | \[{{0}^{o}}\] |
| C. | \[{{180}^{o}}\] |
| D. | \[{{60}^{o}}\] |
| E. | None of these |
| Answer» C. \[{{180}^{o}}\] | |
| 1222. |
Red blood cells do not have: (i) Cell membrane (ii) Cytoplasm (iii) Plastid (iv) Nucleus |
| A. | (i) and (ii) |
| B. | (ii) and (iii) |
| C. | (iii) and (iv) |
| D. | (i) and (iv) |
| E. | None of these |
| Answer» D. (i) and (iv) | |
| 1223. |
In which of the following types of combustion are heat, light and sound produced? |
| A. | Rapid |
| B. | Explosive |
| C. | Spontaneous |
| D. | All of the above |
| Answer» C. Spontaneous | |
| 1224. |
The colour of flame produced by the fuel in the sufficient supply of oxygen is: |
| A. | Black |
| B. | Yellow |
| C. | Green |
| D. | Blue |
| E. | None of these |
| Answer» E. None of these | |
| 1225. |
Unit of calorific value of a fuel is: |
| A. | Joule per gram |
| B. | Kilojoule per liter |
| C. | Kilojoule per kilogram |
| D. | Kilogram per milliliter |
| E. | None of these |
| Answer» D. Kilogram per milliliter | |
| 1226. |
Which of these animal projects protect endangered species? |
| A. | Tiger |
| B. | Elephant |
| C. | Crocodile |
| D. | All of these |
| Answer» E. | |
| 1227. |
Which of the following statements is/are incorrect regarding genes? (i) They control the transfer of hereditary characteristics. (ii) Nucleolus carries all the genes. (iii) They are part of chromosomes. (iv) They are found only in the nucleus. |
| A. | (iii) only |
| B. | (iii) and (iv) only |
| C. | (i) only |
| D. | (ii) and (iv) only |
| Answer» E. | |
| 1228. |
____ is used for making candles. |
| A. | Asphalt |
| B. | Paraffin wax |
| C. | Diesel |
| D. | Petrol |
| E. | None of these |
| Answer» C. Diesel | |
| 1229. |
Deposits of natural gas are found in India in: |
| A. | Tripura |
| B. | Rajasthan |
| C. | Maharashtra |
| D. | All the above |
| E. | None of these |
| Answer» E. None of these | |
| 1230. |
Calorific values of some fuels are given: Fuel Calorific value (kJ/kg) Coal 25000-33000 Diesel 45000 LPG 55000 CNG 50000 On the basis of this data, find out the correct order of efficiency of fuels. |
| A. | LPG > CNG > Diesel > Coal |
| B. | Coal > Diesel > LPG > CNG |
| C. | Diesel > CNG > Coal > LPG |
| D. | CNG > LPG > Diesel > Coal |
| Answer» B. Coal > Diesel > LPG > CNG | |
| 1231. |
Some species become endangered because: |
| A. | They become extinct. |
| B. | They are found exclusively in a particular area. |
| C. | Their population has reduced very much. |
| D. | Both [a] and [b] |
| E. | None of these |
| Answer» D. Both [a] and [b] | |
| 1232. |
Which one of the following is an extinct species? |
| A. | Mountain quail |
| B. | Sikkim stag |
| C. | Asiatic lion |
| D. | Both [a] and [b] |
| E. | None of these |
| Answer» E. None of these | |
| 1233. |
To protect iron from corrosion and rust, it is coated with |
| A. | Tin |
| B. | Copper |
| C. | Mercury |
| D. | Zinc. |
| Answer» E. | |
| 1234. |
There are two different solutions in set up P and Q as shown in figure. The bulb in the set up P glows more brightly as compared to that of the set up Q. What are the possible causes for this? (i) The connections of the circuit Q may be loose. (ii) The liquid in Q may have small conductivity. (iii) Liquid in P is equivalent to a battery while liquid in Q is equivalent to a cell of the battery of liquid P. |
| A. | Only (i) and (ii) |
| B. | Only (ii) and (iii) |
| C. | Only (i) |
| D. | Only (ii) |
| Answer» C. Only (i) | |
| 1235. |
Why is producer gas not a good fuel? |
| A. | It contains CO which is poisonous. |
| B. | It contains \[C{{O}_{2}}\]which is abundant. |
| C. | It contains \[C{{O}_{2}}\]which does not burn. |
| D. | It contains \[{{N}_{2}}\]which does not burn. |
| Answer» E. | |
| 1236. |
Refer to the given flowchart and identify X, Y and Z. |
| A. | X Y Z Biosphere reserve Sanctuary National park |
| B. | X Y Z Biosphere reserve National park Sanctuary |
| C. | X Y Z Sanctuary National park Biosphere reserve |
| D. | X Y Z National park Biosphere reserve Sanctuary |
| Answer» D. X Y Z National park Biosphere reserve Sanctuary | |
| 1237. |
Which one of the following is not a function performed by a Biosphere Reserve? |
| A. | Conservation of wildlife of the area. |
| B. | Prevention of the commercial exploitation of the area. |
| C. | Keeps a record of all the endangered animals of the area. |
| D. | Maintains the lifestyle of the tribal people living in the area. |
| E. | None of these |
| Answer» D. Maintains the lifestyle of the tribal people living in the area. | |
| 1238. |
Which of the following contain more mitochondria? |
| A. | Germinating seeds |
| B. | Dry seeds |
| C. | Dormant seeds |
| D. | Soaked seeds |
| Answer» B. Dry seeds | |
| 1239. |
What will be the number of images formed when two plane mirrors are kept inclined at an angle of\[{{60}^{o}}\]. |
| A. | 4 |
| B. | 5 |
| C. | 10 |
| D. | 3 |
| E. | None of these |
| Answer» C. 10 | |
| 1240. |
Which one of the following is the best way to extinguish the fire cached by clothes of a person? |
| A. | Throwing stones on the clothes. |
| B. | Covering the person with a woolen blanket. |
| C. | Throwing petrol on the clothes. |
| D. | Covering the person with a polythene sheet. |
| E. | None of these |
| Answer» C. Throwing petrol on the clothes. | |
| 1241. |
Which one of the following is not a characteristic of a good fuel? |
| A. | Safe to store. |
| B. | Low ignition temperature. |
| C. | Does not cause pollution. |
| D. | All the above |
| E. | None of these |
| Answer» F. | |
| 1242. |
Which one of the following represents parts of an animal cell? |
| A. | Chloroplast, Cell wall, Vacuole, Cell membrane, Nucleus. |
| B. | Cell membrane, Nucleus, Vacuole, Mitochondria, Cell wall. |
| C. | Cell membrane, Nucleus, Vacuole, Mitochondria, Ribosome. |
| D. | Cell wall, Chloroplast, Mitochondria, Cell membrane, Nucleus. |
| E. | None of these |
| Answer» D. Cell wall, Chloroplast, Mitochondria, Cell membrane, Nucleus. | |
| 1243. |
In eukaryotes genes are located in ____ of the cell. |
| A. | Cytoplasm |
| B. | Nucleus |
| C. | Vacuoles |
| D. | Chlorophyll |
| E. | None of these |
| Answer» C. Vacuoles | |
| 1244. |
Which of the following cells use(s) electric current to produce a chemical reaction? |
| A. | Dry cell |
| B. | Solar cell |
| C. | Electrolytic cell |
| D. | Both dry cell and electrolytic cell |
| Answer» D. Both dry cell and electrolytic cell | |
| 1245. |
Select the incorrect statements among the following: (i) Bitumen is used for metalling the roads. (ii) Some inexhaustible natural resources like coal, petroleum and natural gas formed from the dead remains of living organisms are known as fossil fuels. (iii) Many useful substances are obtained from coal (commercial importance), so it is also called as 'Black gold'. (iv) Natural gas is used as a starting material for the manufacture of a number of chemicals and fertilisers. |
| A. | (i) and (ii) only |
| B. | (ii) and (iii) only |
| C. | (ii) and (iv) only |
| D. | (i), (ii) and (iv) only |
| Answer» C. (ii) and (iv) only | |
| 1246. |
What is the source of fly ash? |
| A. | Petroleum |
| B. | Natural gas |
| C. | Coal |
| D. | All of the above |
| Answer» D. All of the above | |
| 1247. |
____ is the multipurpose protected area that may also contain other protected areas in it. |
| A. | Wildlife sanctuary |
| B. | Botanical garden |
| C. | Zoological garden |
| D. | Biosphere reserve |
| E. | None of these |
| Answer» E. None of these | |
| 1248. |
Which of the following groups indicates flora of a region? |
| A. | Wild mango, Cheetal, Teak, Jamun |
| B. | Chinkara, Pine, Teak, Wild mango |
| C. | Teak, Pine, Jamun, Wild mango |
| D. | Chinkara, Cheetal, Pine, Jamun |
| E. | None of these |
| Answer» D. Chinkara, Cheetal, Pine, Jamun | |
| 1249. |
Which of the following terms is used to describe the species of plants and animals that are found exclusively in a particular area called? |
| A. | Endemic species |
| B. | Endangered species |
| C. | Rare species |
| D. | Extinct species |
| Answer» B. Endangered species | |
| 1250. |
In the given figure, showing the ultrastructure of a plant cell, identify the parts marked as P and Q and select the correct option regarding these. (i) Part P helps in osmoregulation.(ii) Cellular respiration occurs in part Q.(iii) Synthesis of sugars occurs in part Q.(iv) Part P provides colour to flowers and fruits. |
| A. | (i) and (ii) only |
| B. | (i) and (iii) only |
| C. | (iii) and (iv) only |
| D. | (ii) and (iv) only |
| Answer» C. (iii) and (iv) only | |