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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.
| 1051. |
Select the incorrect match. (i) Dachigam National Park - Karnataka (ii) Bandipur National Park - Tamil Nadu (iii) Mehao Wildlife Sanctuary-Arunachal Pradesh (iv) Keoladeo National Park - Rajasthan (v) Similipal Biosphere Reserve ? Odisha (vi) Kanha National Park - Madhya Pradesh |
| A. | (i) and (ii) only |
| B. | (i), (ii) and (vi) only |
| C. | (ii), (iv) and (v) only |
| D. | (ii), (iii) and (vi) only |
| Answer» B. (i), (ii) and (vi) only | |
| 1052. |
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 | |
| 1053. |
Which of the following is most harmful for the human body? |
| A. | \[CO\] |
| B. | \[C{{O}_{2}}\] |
| C. | Oxides of nitrogen |
| D. | Lead compounds |
| Answer» B. \[C{{O}_{2}}\] | |
| 1054. |
Which of the following energy conversions takes place in a cell? |
| A. | Electrical energy into chemical energy |
| B. | Chemical energy into electrical energy |
| C. | Magnetic energy into electrical energy |
| D. | Electrical energy into mechanical energy |
| Answer» C. Magnetic energy into electrical energy | |
| 1055. |
Which of the following is the consequence of man's interference with nature? |
| A. | Increase in natural resources |
| B. | Biological imbalance |
| C. | Increase in the ozone layer |
| D. | Reappearance of extinct species |
| Answer» C. Increase in the ozone layer | |
| 1056. |
Which of the following is incorrect about the given figures? |
| A. | Both are unicellular eukaryotic organisms. |
| B. | a is unicellular while b is multicellular organism. |
| C. | Both are capable of independent existence. |
| D. | Both (b) and (c) |
| Answer» C. Both are capable of independent existence. | |
| 1057. |
I Match the entries in Column-l with those in Column-ll correctly. Column - I Column - II (a) Dark inner zone (i) Hottest part (No carbon) (b) Blue zone (ii) Partial combustion (c) Luminous zone (iii) Unburnt vapours of wax (d) Non-luminous zone (iv) Complete combustion |
| A. | a-1, b-2, c-3, d-4 |
| B. | a-2, b-3, c-4, d-1 |
| C. | a-3, b-4, c-2, d-1 |
| D. | a-4, b-1, c-2, d-3 |
| Answer» D. a-4, b-1, c-2, d-3 | |
| 1058. |
Cans used for storing food are electroplated. What is the material used for electroplating? |
| A. | Chrome onto tin |
| B. | Iron onto tin |
| C. | Tin onto iron |
| D. | Chrome onto iron |
| Answer» D. Chrome onto iron | |
| 1059. |
A species which is at risk of becoming extinct in the near future is known as _____species. |
| A. | Endemic |
| B. | Extinct |
| C. | Endangered |
| D. | Vulnerable |
| Answer» D. Vulnerable | |
| 1060. |
Which of the following tissues is/are present in stomach? |
| A. | Muscle tissue |
| B. | Epithelial tissues |
| C. | Connective tissues |
| D. | All of these |
| Answer» E. | |
| 1061. |
A Which of the following is a fossil fuel? |
| A. | Petroleum |
| B. | Wood |
| C. | Cow dung |
| D. | Dry leaves |
| Answer» B. Wood | |
| 1062. |
Which of the following has the highest boiling point? |
| A. | Kerosene |
| B. | Petrol |
| C. | Diesel |
| D. | Water |
| Answer» E. | |
| 1063. |
Which of the following statements is/are correct? (i) The nucleoplasm and the cytoplasm together make up the protoplasm. (ii) Chloroplasts are a type of plastids, which occur in plant cells. (iii) In many multicellular organisms, all cells have projections called cilia and flagella. (iv) Cell destruction occurs by centrosomes. |
| A. | (i) and (ii) only |
| B. | (i), (ii) and (iii) only |
| C. | (i) only |
| D. | (iii) and (iv) only |
| Answer» B. (i), (ii) and (iii) only | |
| 1064. |
What is an endangered animal? |
| A. | An animal on the verge of extinction |
| B. | An animal which is extinct |
| C. | An animal that is dangerous to humans |
| D. | An animal that is dangerous to other animals |
| Answer» B. An animal which is extinct | |
| 1065. |
Study the given flowchart carefully. Which of the following statements is correct? |
| A. | X can be condensed back to coal. |
| B. | Y and Z are useless products. |
| C. | Z starts burning when exposed to air. |
| D. | None of these |
| Answer» E. | |
| 1066. |
Which of the following is true of the colourless plastid and its function? |
| A. | Chloroplasts performs photosynthesis |
| B. | Leucoplasts performs respiration |
| C. | Chromoplasts are involved with protection from sunlight |
| D. | Leucoplasts help in the storage of Food |
| Answer» E. | |
| 1067. |
Which of the following are the effects of the mismanagement of timber logging? |
| A. | Floods |
| B. | Soil erosion |
| C. | Aforestation |
| D. | Both (A) and (B) |
| Answer» E. | |
| 1068. |
Read the given statements and select the correct option. Statement 1: Phosphorus burns in air at room temperature. Statement 2: It is an example of spontaneous combustion. |
| 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» C. Statement 1 is true and statement 2 is false. | |
| 1069. |
Sujit took four different beakers I, II, III, and IV each containing 1 litre water. Also, he took four fuels W, X, Y, and Z. Then, he started heating the water in beakers I, II, III, and IV using 1 kg of each W, X, Y, and Z respectively. He found out that the heat produced by complete combustion of 2 kg of W, 4 kg of X, 1.2 kg of Y, and 3.2 kg of Z is 110000 kJ, 100000 kJ, 72000 kJ, and 12800 kJ respectively. Assume that all the heat released by burning the fuel is absorbed by water. In which beaker does the maximum evaporation take place? |
| A. | I |
| B. | II |
| C. | III |
| D. | IV |
| Answer» D. IV | |
| 1070. |
A What is the process of depositing a layer of a desired metal on another material by passing electric current called? |
| A. | Electrolysis |
| B. | Electroplating |
| C. | Chromium plating |
| D. | Galvanizing |
| Answer» C. Chromium plating | |
| 1071. |
Coal, petroleum, and methane are organic substances. They exist in different physical states. The physical states in which coal, petroleum, and methane respectively exist are |
| A. | Solid, liquid, and liquid |
| B. | Solid, liquid, and solid |
| C. | Solid, liquid, and gas |
| D. | Gas, liquid, and solid |
| Answer» D. Gas, liquid, and solid | |
| 1072. |
What are the characteristics of a rocket fuel? |
| A. | Light and compact |
| B. | High calorific value |
| C. | Burns rapidly |
| D. | All of the above |
| Answer» E. | |
| 1073. |
Which of the following is the main difference between onion peel cells and human cheek cells? |
| A. | Presence of mitochondria in onion peel cells |
| B. | Presence of cell wall in onion peel cells |
| C. | Absence of plasma membrane in cheek cells |
| D. | Absence of endoplasmic reticulum in cheek cells |
| Answer» C. Absence of plasma membrane in cheek cells | |
| 1074. |
Study the given table regarding different species and their status. Select the correct option for P - S. Species Status P Extinct Great Indian Bustard Q R Endangered Mandrill S |
| A. | P Q R S Dodo Vulnerable Gaur Critically endangered |
| B. | P Q R S Tasmanian wolf Critically endangered Giant Panda Vulnerable |
| C. | P Q R S Steller?s sea cow Critically endangered Asian elephant Vulnerable |
| D. | P Q R S Labrador duck Vulnerable Cheetah Critically endangered |
| Answer» D. P Q R S Labrador duck Vulnerable Cheetah Critically endangered | |
| 1075. |
Which alternative incorrectly classifies a natural resource on the basis of its availability? |
| A. | Natural resource Classification Wild life Exhaustible |
| B. | Natural resource Classification Minerals Exhaustible |
| C. | Natural resource Classification Petroleum Inexhaustible |
| D. | Natural resource Classification Wind Inexhaustible |
| Answer» D. Natural resource Classification Wind Inexhaustible | |
| 1076. |
What is the common name of petroleum? |
| A. | Black gold |
| B. | Yellow gold |
| C. | Green gold |
| D. | Blue gold |
| Answer» B. Yellow gold | |
| 1077. |
Arrange the following fuels in the increasing order of their calorific value. (i) Petrol (ii) Wood (ii) Coal (iv) Natural gas |
| A. | (i), (ii), (iii), (iv) |
| B. | (ii), (iii), (iv) and (i) |
| C. | (ii), (i), (iii) and (iv) |
| D. | (ii), (iii), (i) and (iv) |
| Answer» E. | |
| 1078. |
Why is kerosene oil regarded more suitable than petrol in oil lamps? |
| A. | Kerosene is heavier. |
| B. | Kerosene is expensive. |
| C. | Kerosene is less volatile. |
| D. | Kerosene is more volatile. |
| Answer» D. Kerosene is more volatile. | |
| 1079. |
Which of the following does not represent characteristic of a good fuel? |
| A. | It should have a high calorific value. |
| B. | Its ignition temperature should be low but well above the room temperature. |
| C. | It should have a high rate of combustion. |
| D. | It should be fairly cheap and safe to handle and transport. |
| Answer» D. It should be fairly cheap and safe to handle and transport. | |
| 1080. |
Observe the figure of destructive distillation of coal. What are the three fractions X, Y and Z? |
| A. | X Y Z Coal gas Coal tar Coke |
| B. | X Y Z Coal gas Coke Coal |
| C. | X Y Z Coal gas Coal tar Impure coal |
| D. | X Y Z Carbon dioxide Coal tar Coal |
| Answer» B. X Y Z Coal gas Coke Coal | |
| 1081. |
Which of the following is/are made up of cellulose? |
| A. | Cell membrane |
| B. | Plasma membrane |
| C. | Cell wall |
| D. | All of these |
| Answer» D. All of these | |
| 1082. |
Why is zinc better than tin for electro- plating a piece of iron in order to prevent it from rusting? |
| A. | Zinc is cheaper than tin. |
| B. | Tin is toxic. |
| C. | Zinc can prevent iron from coming into contact with water and air. |
| D. | Rusting is prevented even when the zinc layer is broken. |
| Answer» E. | |
| 1083. |
Which of the following tissues include blood cell? |
| A. | Epithelial tissue |
| B. | Muscle tissue |
| C. | Connective tissue |
| D. | Nervous tissue |
| Answer» D. Nervous tissue | |
| 1084. |
If a goldsmith wants to make jewellery of gold and silver, then he has to melt them. To do this, he will use the ___i____ zone of the flame as this zone is the ____ii____ zone of the flame. The information in which alternative completes the given statement? |
| A. | i-Innermost, ii-Hottest |
| B. | i-Innermost, ii-Moderately hot |
| C. | i-Outermost, ii-Moderately hot |
| D. | i-Outermost, ii-Hottest |
| Answer» E. | |
| 1085. |
Where is kerosene mainly used? |
| A. | In laying down roads. |
| B. | As fuel in jet engines. |
| C. | In making water proof materials. |
| D. | In furnaces of industries. |
| Answer» C. In making water proof materials. | |
| 1086. |
A list of natural resources is given. I. Wind II. Coal III. Minerals IV. Petroleum V. Sunlight VI. Biomass Which of the following pairs of natural resources is exhaustible? |
| A. | II and IV |
| B. | I and V |
| C. | IV and VI |
| D. | V and VI |
| Answer» B. I and V | |
| 1087. |
The charges present on the various objects are shown below in the figure. In which of the following cases does a force of repulsion act between them? |
| A. | |
| B. | |
| C. | |
| D. | |
| Answer» B. | |
| 1088. |
Which of the following gases is responsible for global warming? |
| A. | Carbon monoxide |
| B. | Carbon dioxide |
| C. | Nitrogen |
| D. | Ozone |
| Answer» C. Nitrogen | |
| 1089. |
The diagram shows a plotting compass placed above a copper wire when there is no current flowing in the wire. What happens to the compass needle when a large direct current flows from point A to point B? |
| A. | The compass needle points towards the right. |
| B. | The compass needle points towards the left. |
| C. | The compass needle points towards upward. |
| D. | The compass needle points toward downward. |
| Answer» E. | |
| 1090. |
Liquids and gaseous fuels have more advantages over solid fuels. Some of the advantages are (i) Calorific value of liquid and gaseous fuels is higher than the solid fuels. (ii) Liquids and gaseous fuels have higher ignition temperatures than the solid fuels. (iii) Liquids and gaseous fuels are easier to store since solid fuels occupy lot of space. (iv) Liquids and gaseous fuels burn completely, leaving no residue. The correct advantages are |
| A. | (i), (ii) and (iii) |
| B. | (i), (iii) and (iv) |
| C. | (ii), (iii) and (iv) |
| D. | (i), (ii) and (iv). |
| Answer» C. (ii), (iii) and (iv) | |
| 1091. |
The adverse effects of deforestation is/are(i) Reduced rainfall(ii) Soil erosion(iii) Destruction of habitat of wildlife(iv) Climatic changes |
| A. | (ii) and (iii) only |
| B. | (ii) only |
| C. | (i), (ii) and (iii) only |
| D. | (i), (ii), (iii) and (iv) |
| Answer» E. | |
| 1092. |
The liquid containing dissolved sugars and salts in the plant vacuole is: |
| A. | Xylem |
| B. | Phloem |
| C. | Cell sap |
| D. | All the above |
| E. | None of these |
| Answer» D. All the above | |
| 1093. |
Which one of the following contains maximum percentage of carbon? |
| A. | Bituminous |
| B. | Anthracite |
| C. | Lignite |
| D. | Plastic |
| E. | None of these |
| Answer» C. Lignite | |
| 1094. |
Swati took two glass plates I and II. She introduced them to the-different zones of a flame (as shown in the figure). She held them there with a pair of tongs for about 10 seconds. She observes that a circular-blackish ring has developed on plate I, while no such blackish ring is observed on plate II. From Swati's experiment, it can be concluded that ______i______ zone is the zone containing unburnt particles, and the ___ii___ zone is the zone of complete combustion. The information in which alternative completes the given statement? |
| A. | i-outermost, ii-Innermost |
| B. | i-Innermost, ii-Outermost |
| C. | i-Innermost, ii-Middle. |
| D. | i-Middle, ii-Innermost |
| Answer» C. i-Innermost, ii-Middle. | |
| 1095. |
LED refers to: |
| A. | Light emitting diode |
| B. | Light electrolyte diode |
| C. | Less electrolyte demand |
| D. | Light electrolyte demand |
| E. | None of these |
| Answer» B. Light electrolyte diode | |
| 1096. |
One word answers are given for a few statements. Mark the answer which is not correct. |
| A. | Resources which will either never run out or are replaced within a reasonable period of time ? Renewable resources. |
| B. | Wise and careful use of resources by not wasting them - Conservation. |
| C. | Conversion of wood into coal over million of years due to high temperature and pressure under the earth - Carbonisation. |
| D. | A black, viscous liquid extracted from the rocks which is a source of hydrocarbons - Coal tar. |
| Answer» E. | |
| 1097. |
Which of the following products is not obtained from petroleum? |
| A. | Coke |
| B. | Diesel |
| C. | Paraffin wax |
| D. | Lubricating oil |
| Answer» B. Diesel | |
| 1098. |
Which of the following substances can be used to extinguish a fire in an oil well? |
| A. | Water |
| B. | Sand |
| C. | Carbon dioxide |
| D. | Sodium bicarbonate solution |
| Answer» D. Sodium bicarbonate solution | |
| 1099. |
Which of the following methods of conservation helps in the maintaining of bio diversity? |
| A. | Pollution |
| B. | Water sources |
| C. | Gene pool |
| D. | Forest reserves |
| Answer» D. Forest reserves | |
| 1100. |
What happens when electric current is made to flow through a conductor? |
| A. | Some amount of electrical energy is converted into heat energy. |
| B. | Some amount of electrical energy is converted into mechanical energy. |
| C. | Some amount of mechanical energy is converted into electrical energy. |
| D. | Some amount of heat energy is converted into electrical energy. |
| Answer» B. Some amount of electrical energy is converted into mechanical energy. | |