MCQOPTIONS
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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.
| 1151. |
What does gobar gas produced from animal and plant waste contain? |
| A. | Ethane |
| B. | Methane |
| C. | Propane |
| D. | Acetylene |
| Answer» C. Propane | |
| 1152. |
The ignition temperatures of four substances, P, Q, R, and S, are \[{{125}^{o}}C\], \[{{270}^{o}}C\], \[{{155}^{o}}C\], and \[{{310}^{o}}C\] respectively. Which of the following pairs of substances catches fire at \[{{250}^{o}}C\]? |
| A. | Q and S |
| B. | P and R |
| C. | R and S |
| D. | P and Q |
| Answer» C. R and S | |
| 1153. |
Which of the following is the best conductor of electricity? |
| A. | Tap water |
| B. | Distilled water |
| C. | Sea water |
| D. | Rain water |
| Answer» D. Rain water | |
| 1154. |
Which of the following liquids is a bad conductor of electricity? |
| A. | Lemon juice |
| B. | Vinegar |
| C. | Sea water |
| D. | Distilled water |
| Answer» E. | |
| 1155. |
Elephant is an: |
| A. | Extinct species |
| B. | Endangered species |
| C. | Endemic species |
| D. | All the above |
| E. | None of these |
| Answer» D. All the above | |
| 1156. |
A group of population which has the capacity to interbreed is called: |
| A. | Plants |
| B. | Animals |
| C. | Species |
| D. | Kingdom |
| E. | None of these |
| Answer» D. Kingdom | |
| 1157. |
Few statements are given below. Identify the incorrect statements and mark the appropriate option. (i) in fractional distillation of petroleum, hydrocarbon with lowest boiling point condenses first. (ii) Useful substances obtained from petroleum and natural gas are termed as 'Petrochemicals'. (iii) Coke is used in the extraction of many metals. (iv) Paraffin wax used in candles, vaseline, grease, polish is obtained by destructive distillation of coal. |
| A. | (i) and (ii) |
| B. | (i) and (iv) |
| C. | (i), (ii) and (iii) |
| D. | (ii) and (iv) |
| Answer» C. (i), (ii) and (iii) | |
| 1158. |
What is a National Park? |
| A. | An area strictly reserved for improvement of wild life |
| B. | An area where grazing and cultivation are permitted |
| C. | A park where the whole nation can have picnics |
| D. | A park which can be privately owned |
| Answer» B. An area where grazing and cultivation are permitted | |
| 1159. |
The diagram shows a beaker containing a solution of zinc sulphate and two carbon electrodes. A battery is placed next to it. In order that the electrode P be plated with zinc, |
| A. | P must be connected to S and Q to R |
| B. | P must be connected to Q and S to R |
| C. | P must be connected to R and Q to S |
| D. | P and Q must be connected to R. |
| Answer» D. P and Q must be connected to R. | |
| 1160. |
Which one of the following observations can be observed when electric current is passed through an electrolyte in which two electrodes are present? |
| A. | Bubbles of gas may be formed on the electrodes. |
| B. | Deposits of metal may be seen on electrodes. |
| C. | Change in the colour of the solution may take place. |
| D. | All the above |
| E. | None of these |
| Answer» E. None of these | |
| 1161. |
Ordinarily, kerosene oil bums in air with a yellow flame. However, in stoves, it bums with a blue flame. Which of the following statements explains the above observation? |
| A. | Complete combustion of kerosene takes place in stoves. |
| B. | The ignition temperature of kerosene is attained easily in stoves. |
| C. | Stoves are made of iron and kerosene bums with a blue flame in the presence of iron. |
| Answer» B. The ignition temperature of kerosene is attained easily in stoves. | |
| 1162. |
Which of these is the industrial applications of the chemical effects of electric current? |
| A. | Electroplating |
| B. | Galvanizing |
| C. | Anodizing |
| D. | All of the above |
| Answer» E. | |
| 1163. |
Which of the following pairs are correctly matched?(i) Protoplasm - Purkinje(ii) Discovery of cell - Leeuwenhoek(iii) Cell theory - Schwann(iv) Omnis cellula-e-cellula - Virchow(v) Nucleolus - Robert Brown |
| A. | (i), (iii) and (iv) only |
| B. | (i), (iii), (iv) and (v) only |
| C. | (i), (ii) and (iv) only |
| D. | (ii), (iv) and (v) only |
| Answer» B. (i), (iii), (iv) and (v) only | |
| 1164. |
Which of the following is NOT an effective way to save living organisms from extinction? |
| A. | Taking up afforestation |
| B. | Establishing national parks |
| C. | Importing organisms from other countries |
| D. | Establishing centres to look after endangered species |
| Answer» D. Establishing centres to look after endangered species | |
| 1165. |
What ignition temperature does an inflammable substance have? |
| A. | More than 100°C |
| B. | Less than 100°C |
| C. | More than 200 °C |
| D. | Between 200 °C to 350 °C |
| Answer» C. More than 200 °C | |
| 1166. |
Which of the following statements is/are the functions of golgi apparatus? |
| A. | Transporting proteins that are to be released from the cell |
| B. | Packaging proteins into vesicles. |
| C. | Altering or modifying proteins. |
| D. | All of these. |
| Answer» C. Altering or modifying proteins. | |
| 1167. |
Match column I with column II and select the correct option from the codes given below. Column I Column II (a) Ribosomes (i) Jelly-like substance (b) Lysosomes (ii) Powerhouse of the cell (c) Endoplasmic reticulum (iii) Site of protein synthesis (d) Mitochondria (v) Suicide bags |
| A. | (a) - (iii), (b) - (v), (c) - (iv), (d) - (i), (e) - (ii) |
| B. | (a) - (iv), (b) - (v), (c) - (iii), (d) - (i), (e) - (ii) |
| C. | (a) - (iii), (b) - (v), (c) - (i), (d) - (iv), (e) - (ii) |
| D. | (a) - (iv), (b) - (v), (c) - (ii), (d) - (i), (e)-(iii) |
| Answer» B. (a) - (iv), (b) - (v), (c) - (iii), (d) - (i), (e) - (ii) | |
| 1168. |
Which of the following includes all living organisms and all life- supporting regions of the Earth? |
| A. | Biosphere |
| B. | Ionosphere |
| C. | Stratosphere |
| D. | Lithosphere |
| Answer» B. Ionosphere | |
| 1169. |
Which among the following is essential for the combustion to take place? |
| A. | Carbon dioxide |
| B. | Petrol |
| C. | Oxygen |
| D. | Candle |
| E. | None of these |
| Answer» D. Candle | |
| 1170. |
Refer to the given diagrammatic representation of a Biosphere reserve. Select the incorrect statement regarding X, Y and Z.(i) X is devoted to strict protection of wildlife and no human activity is allowed in this zone.(ii) In Y, only limited human activity (compatible with conservation) is allowed.(iii) In Z, commercial exploitation of natural resources is allowed.(iv) Tourism is allowed upto Z zone only.(v) Zone Y helps to maintain the lifestyle of the tribal people living in the area. |
| A. | (iii), (iv) and (v) only |
| B. | (ii), (iii) and (v) only |
| C. | (i), (iii) and (iv) only |
| D. | (ii), (iii) and (iv) only |
| Answer» B. (ii), (iii) and (v) only | |
| 1171. |
In the experiment, if A is plated with copper, the anode would be |
| A. | A |
| B. | B |
| C. | C |
| D. | Data insufficient |
| Answer» C. C | |
| 1172. |
An electric current is passed through a conducting solution. Following are the some observations: (i) Deposits of metal may be seen on electrodes (ii) Solution may get heated (iii) Bubbles of gas may be formed on the electrodes |
| A. | Only (ii) is true. |
| B. | Only (i) and (ii) are true. |
| C. | Only (i) and (iii) are true. |
| D. | All (i), (ii) and (iii) are true. |
| Answer» E. | |
| 1173. |
When electricity is passed through calcium nitrate solution in water, what is likely to be formed at the cathode and why? |
| A. | Hydrogen because it is a very reactive than calcium |
| B. | Calcium because it is a very reactive than hydrogen |
| C. | Hydrogen because it is less reactive than calcium |
| D. | Calcium because it is less reactive than hydrogen. |
| Answer» D. Calcium because it is less reactive than hydrogen. | |
| 1174. |
Which of the following regions has rich flora and fauna? |
| A. | Deccan plateau |
| B. | Lofty Himalayas |
| C. | Himalaya slopes |
| D. | Thar desert |
| Answer» B. Lofty Himalayas | |
| 1175. |
Which of the following is/are caused due to uncontrolled deforestation? |
| A. | The destruction of habitats |
| B. | Landslides |
| C. | Floods |
| D. | All of these |
| Answer» E. | |
| 1176. |
In which of the following practices a part of w a forest cleared for cultivation once before moving on to another new part? |
| A. | Shifting cultivation |
| B. | Crop rotation |
| C. | Step farming |
| D. | All of these |
| Answer» B. Crop rotation | |
| 1177. |
Carbonization is a |
| A. | Fast process in which dead vegetation converts into coal |
| B. | Slow process in which dead vegetation converts into coal |
| C. | Fast process in which dead organisms of the sea get converted into petroleum |
| D. | Slow process in which dead organisms of the sea get converted into petroleum |
| Answer» C. Fast process in which dead organisms of the sea get converted into petroleum | |
| 1178. |
Which of the following properties is NOT a characteristic of a good fuel? |
| A. | High ignition temperature |
| B. | Low cost |
| C. | Causes minimum pollution |
| D. | Readily available |
| Answer» B. Low cost | |
| 1179. |
An organelle, spherical in structure contains the genetic material is: |
| A. | Mitochondria |
| B. | Cell wall |
| C. | Ribosome |
| D. | Nucleus |
| E. | None of these |
| Answer» E. None of these | |
| 1180. |
Father of microbiology is: |
| A. | Robert Swanson |
| B. | Leeuwenhoek |
| C. | Robert Hooke |
| D. | Robert Brown |
| E. | None of these |
| Answer» C. Robert Hooke | |
| 1181. |
Which one of the following lacks in prokaryotic cell? |
| A. | Cytoplasm |
| B. | Cell membrane |
| C. | Chromosome |
| D. | Membrane - bound nucleus |
| E. | None of these |
| Answer» E. None of these | |
| 1182. |
Global warming is a result of ____i_____ percentage of ____ii_____ in air. The information in which alternative completes the given statement? |
| A. | i-An increased, ii-Carbon dioxide |
| B. | i-A decreased, ii-Carbon dioxide |
| C. | i-An increased, ii-nitrogen |
| D. | i-A decreased, ii-nitrogen |
| Answer» B. i-A decreased, ii-Carbon dioxide | |
| 1183. |
Endoplasmic reticulum is a network of interconnecting membranous structures filled with fluid. Which of the following cells would most likely have high concentration of densely packed rough endoplasmic reticulum? |
| A. | A bioluminescent bacterial cell |
| B. | A functional phloem at maturity |
| C. | An amoeba engulfing small ciliates |
| D. | A pancreatic cell engaged in the production of digestive enzymes |
| Answer» E. | |
| 1184. |
Which of the following processes include the mass emigration of bees to settle down at a new place in order to form a new hive called? |
| A. | Migration |
| B. | Swarming |
| C. | Spawning |
| D. | Carting |
| Answer» C. Spawning | |
| 1185. |
Which of the following is a correct sequence? (i) Cell (ii) Tissue (iii) Organ system (iv) Organ (v) Organism |
| A. | (i) \[\to \] (ii) \[\to \] (iv) \[\to \] (iii) \[\to \] (v) |
| B. | (i) \[\to \] (iii) \[\to \] (iv) \[\to \] (ii) \[\to \] (v) |
| C. | (i) \[\to \] (v) \[\to \] (iv) \[\to \] (iii) \[\to \] (ii) |
| D. | (i) \[\to \] (v) \[\to \] (iii) \[\to \] (ii) \[\to \] (iv) |
| Answer» B. (i) \[\to \] (iii) \[\to \] (iv) \[\to \] (ii) \[\to \] (v) | |
| 1186. |
By what process is petroleum refined? |
| A. | Fractional distillation |
| B. | Destructive distillation |
| C. | Distillation |
| D. | All of the above |
| Answer» B. Destructive distillation | |
| 1187. |
Which of the following cell organelles does NOT contain DNA? |
| A. | Mitochondria |
| B. | Chloroplast |
| C. | Nucleus |
| D. | Lysosome |
| Answer» E. | |
| 1188. |
Mark the correct statements) among the following. I. Water is a very good fire extinguisher as it cools down the fuels such as wood below its ignition temperature. II. Water is a very good fire extinguisher for burning oils and electrical equipment?s. III. Sand and soil may act as a good fire extinguisher for burning oils. |
| A. | I only |
| B. | II only |
| C. | III only |
| D. | I and III only |
| Answer» E. | |
| 1189. |
Match the following: Column A Column B (i) Wildlife sanctuary [A] Buffer zone (ii) Innermost zone of a biosphere [B] Transition zone (iii) Outermost one of a biosphere [C] Protection of wild animals (iv) Middle zone of a biosphere [D] Core zone |
| A. | (i - C), (ii - A), (iii - B), (iv - D) |
| B. | (i - C), (ii - B), (iii - A), (iv - D) |
| C. | (i - C), (ii - D), (iii - B), (iv - A) |
| D. | (i - C), (ii - D), (iii - A), (iv - B) |
| E. | None of these |
| Answer» D. (i - C), (ii - D), (iii - A), (iv - B) | |
| 1190. |
What does the blue zone in an L.P.G. flame indicate? |
| A. | Unburnt vapours |
| B. | Partial decomposition |
| C. | Moderately hot |
| D. | Hottest zone of complete combustion |
| Answer» E. | |
| 1191. |
The ignition temperature of sodium is very _____i____. To prevent its _____ii_______ combustion, it is stored under _______iii______,. The information in which alternative completes the given statements? |
| A. | i-low, ii-rapid, iii-Kerosene |
| B. | i-low, ii-spontaneous, iii-Kerosene |
| C. | i-high, ii-rapid, iii- water |
| D. | i-high, ii-spantaneous, iii-water |
| Answer» C. i-high, ii-rapid, iii- water | |
| 1192. |
Study the characteristics given below: It is a tough, porous and black substance. It is a pure form of carbon. Based on the above characteristics, identify it from the following. |
| A. | Kerosene |
| B. | Petrol |
| C. | Coke |
| D. | Lubricating oil |
| Answer» D. Lubricating oil | |
| 1193. |
Which of the following is the electrolyte in a dry cell? |
| A. | Copper sulphate |
| B. | Zinc sulphate |
| C. | Sulphuric acid |
| D. | Ammonium chloride |
| Answer» E. | |
| 1194. |
Different methods of extinguishing a fire involve the following : I. Removing the combustible substance. II. Cooling the substance to a temperature below its ignition temperature. III. Cutting off the supply of air. Which of the following statements is correct? |
| A. | Method I is suitable in case of a building on fire. |
| B. | Method II involves water which works when wood or paper are on fire. |
| C. | Method III involves carbon dioxide gas which is lighter than oxygen and forms a blanket around the air. |
| D. | All of these |
| Answer» C. Method III involves carbon dioxide gas which is lighter than oxygen and forms a blanket around the air. | |
| 1195. |
A Biosphere Reserve may contain: (i) National Park (ii) Zoological garden (iii) Wildlife Sanctuary (iv) Botanical garden |
| A. | (i) and (ii) |
| B. | (ii) and (iii) |
| C. | (iii) and (iv) |
| D. | (i) and (iii) |
| E. | None of these |
| Answer» E. None of these | |
| 1196. |
On which of the following surfaces diffused reflection will not take place |
| A. | Paper |
| B. | Plane mirror |
| C. | Cardboard |
| D. | Unpolished metal object |
| E. | None of these |
| Answer» C. Cardboard | |
| 1197. |
Look at the following figure and choose the correct option. |
| A. | X represents anode, Y represents cathode |
| B. | X represents cathode, Y represents anode |
| C. | Both represent anode |
| D. | Both represent cathode |
| E. | None of these |
| Answer» B. X represents cathode, Y represents anode | |
| 1198. |
Cheek cells are made up of which of the following cells? |
| A. | Bone cells |
| B. | Epithelial cells |
| C. | Nerve cells |
| D. | Brain cells |
| Answer» C. Nerve cells | |
| 1199. |
Which one among the following has the highest calorific value? |
| A. | Wood |
| B. | Cow dung cake |
| C. | Kerosene |
| D. | LPG |
| E. | None of these |
| Answer» E. None of these | |
| 1200. |
Combustion that occurs suddenly with the evolution of a large amount of gas is: |
| A. | Rapid combustion |
| B. | Spontaneous combustion |
| C. | Explosion |
| D. | Gas combustion |
| E. | None of these |
| Answer» D. Gas combustion | |