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.
| 1101. |
Which of the following is the control room of the cell? |
| A. | Nucleus |
| B. | Protoplasm |
| C. | Chloroplast |
| D. | Ribosome |
| Answer» B. Protoplasm | |
| 1102. |
Which one of the following is an application of chemical effect of current? |
| A. | Electroplating |
| B. | Purification of metals |
| C. | Decomposing chemical compounds |
| D. | All the above |
| E. | None of these |
| Answer» D. All the above | |
| 1103. |
The zone of flame which consists of hot, unburnt vapours of the combustible material is: |
| A. | Wick |
| B. | Yellow zone |
| C. | Dark zone |
| D. | Blue zone |
| E. | None of these |
| Answer» D. Blue zone | |
| 1104. |
____ effect of electric current is indicated by change in colour of a solution by passing electric current through it. |
| A. | Physical |
| B. | Chemical |
| C. | Heating |
| D. | Magnetic |
| E. | None of these |
| Answer» C. Heating | |
| 1105. |
Select the correct match.(i) Dr. Salim Ali - Grand Old Bird Man of India(ii) J. Vijaya – Herpetologist(iii) Sunderlal Bahuguna - Chipko movement |
| A. | (i) and (ii) only |
| B. | (ii) and (iii) only |
| C. | (i) and (iii) only |
| D. | (i), (ii) and (iii) |
| Answer» E. | |
| 1106. |
Read the given statements and select the correct option. Statement 1: Petrol condenses near the top of the fractionating column while diesel oil near the middle of the column. Statement 2: Petrol is more volatile than diesel oil. |
| 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. | |
| 1107. |
Read the given statements and select the option which correctly fill the blanks.(i) _______ is the first biosphere reserve of India.(ii) _______ is the number and variety of plants, animals and other organisms that exist.(iii) Species that no longer exist anywhere on the Earth are called _______ species.(iv) Cutting down forest and using the land for other purpose is known as _______. |
| A. | (i)(ii)(iii)(iv)Sunderbans Biosphere ReserveSpeciesEndangeredAfforestation |
| B. | (i)(ii)(iii)(iv)Nilgiri Biosphere ReserveBiodiversityExtinctDeforestation |
| C. | (i)(ii)(iii)(iv)Nilgiri Biosphere ReserveSpeciesExtinctAfforestation |
| D. | (i)(ii)(iii)(iv)Sunderbans Biosphere ReserveBiodiversityEndangeredDeforestation |
| Answer» C. (i)(ii)(iii)(iv)Nilgiri Biosphere ReserveSpeciesExtinctAfforestation | |
| 1108. |
Which of the following natural resources is Exhaustible? |
| A. | Wind |
| B. | Coal |
| C. | Sunlight |
| D. | Biomass |
| Answer» C. Sunlight | |
| 1109. |
Cell theory was given by: |
| A. | Charles Darwin |
| B. | Theodor Schwann |
| C. | Matthias Jakob Schleiden |
| D. | Both [b] and [c] |
| E. | None of these |
| Answer» E. None of these | |
| 1110. |
A suitable term of the various components of cells is: |
| A. | Tissue |
| B. | Cell organdies |
| C. | Chromosomes |
| D. | Genes |
| E. | None of these |
| Answer» C. Chromosomes | |
| 1111. |
Which type of tissue lines our body cavities and covers body surface? |
| A. | Nervous tissue |
| B. | Muscle tissue |
| C. | Epithelial tissue |
| D. | Connective tissue |
| Answer» D. Connective tissue | |
| 1112. |
Harish performed two different experiments I and II. In experiment I, he provides a substance 'X? with some heat. He found out that a sudden reaction takes place to form heat, light, and sound. In experiment II, he provides heat to a substance 'Y?. He found out that when Y bums, only heat and light are produced. Experiment I represents an example of __i__, and experiment II represents an example of __ii___. The information in which alternative completes the given statement? |
| A. | i-Explosion, ii-Rapid combustion |
| B. | i-Explosion, ii-Sportaneous combustion |
| C. | i-Spontaneous combustion, ii-Explosion |
| D. | i-Rapid combustion, ii-Spontaneous combustion |
| Answer» B. i-Explosion, ii-Sportaneous combustion | |
| 1113. |
Which of the following groups consists of endangered and vulnerable species respectively? |
| A. | Cheetah and Jaguar |
| B. | Hog deer and Leopard |
| C. | Red Panda and Asian elephant |
| D. | Labrador duck and Blue whale |
| Answer» C. Red Panda and Asian elephant | |
| 1114. |
Human eye-lens is a: |
| A. | Concave lens |
| B. | Convex lens |
| C. | Concavo - Convex lens |
| D. | Convexo - Concave lens |
| E. | None of these |
| Answer» C. Concavo - Convex lens | |
| 1115. |
Which gas is produced at anode when current passes through acidified water? |
| A. | Hydrogen |
| B. | Oxygen |
| C. | Nitrogen |
| D. | Fluorine |
| E. | None of these |
| Answer» C. Nitrogen | |
| 1116. |
Which of the following steps is NOT suitable for the conservation of tigers? |
| A. | Setting up sanctuaries to protect animals |
| B. | Establishing forest reserves |
| C. | Establishing more recreational and tourist centres in the forest |
| D. | Increasing public awareness on the effects of indiscriminate hunting of animals |
| Answer» D. Increasing public awareness on the effects of indiscriminate hunting of animals | |
| 1117. |
When methane burns in air, what are the products formed? |
| A. | \[C{{O}_{2}}+2{{H}_{2}}O+heat\] |
| B. | \[C{{O}_{2}}+{{H}_{2}}\] |
| C. | \[CO+{{O}_{2}}\] |
| D. | \[C{{O}_{2}}+{{O}_{2}}+heat\] |
| Answer» B. \[C{{O}_{2}}+{{H}_{2}}\] | |
| 1118. |
Coal was formed over a long period of time under high pressure and temperature conditions by the decomposition of dead vegetation. This process of conversion of dead vegetation to coal is known as |
| A. | Refining |
| B. | Threshing |
| C. | Condensation |
| D. | Carbonization |
| Answer» E. | |
| 1119. |
Which of the following is the intracellular transport structure that helps in the protein and lipid synthesis? |
| A. | Ribosomes |
| B. | Microtubules and microfilaments |
| C. | Golgi complex |
| D. | Endoplasmic reticulum |
| Answer» E. | |
| 1120. |
In electrolysis, salt solution breaks up into positively and negatively ? charged particles are called: |
| A. | Electrodes |
| B. | Electrons |
| C. | Ions |
| D. | Insulators |
| E. | None of these |
| Answer» D. Insulators | |
| 1121. |
Which one of the following is correct pair? |
| A. | Cathode - Positive electrode |
| B. | Anode - Negative electrode |
| C. | Cation - Negative ion |
| D. | Anion - Positive ion |
| E. | None of these |
| Answer» F. | |
| 1122. |
For a spontaneous combustion to take place, which condition given below is necessary? |
| A. | Flame |
| B. | Low ignition temperature |
| C. | Rise in temperature |
| D. | Temperature below 30°C |
| Answer» C. Rise in temperature | |
| 1123. |
Why is L.P.G, used as domestic fuel, mixed with a strong smelling volatile liquid like mercaptan? |
| A. | For better combustion |
| B. | For good smell/fragrance |
| C. | For detection of gas leakage |
| D. | For higher calorific value |
| Answer» D. For higher calorific value | |
| 1124. |
What is the direction in which energy flow in an ecosystem? |
| A. | Multidirectional |
| B. | Unidirectional |
| C. | Bidirectional |
| D. | Circular |
| Answer» C. Bidirectional | |
| 1125. |
Small rod-like organelles which oxidize food to produce energy are: |
| A. | Golgi body |
| B. | Mitochondria |
| C. | Lysosomes |
| D. | Endoplasmic reticulum |
| E. | None of these |
| Answer» C. Lysosomes | |
| 1126. |
A nerve cell is long and has projections so that they can: (i) Bring about the movement in body parts. (ii) Make contacts with many other nerve cells. (iii) Carry water and mineral salts from roots to leaves. (iv) Carry messages over long distances i.e between brain and other parts of the body. |
| A. | (i) and (ii) |
| B. | (ii) and (iii) |
| C. | (ii) and iv) |
| D. | (iii) and (iv) |
| E. | None of these |
| Answer» D. (iii) and (iv) | |
| 1127. |
Which of the following is the best extinguisher for inflammable materials? |
| A. | Water |
| B. | Sulphur dioxide |
| C. | Carbon dioxide |
| D. | Carbon monoxide |
| Answer» D. Carbon monoxide | |
| 1128. |
Which of the following gives the cell its shape, maintains its size, protects the internal structures inside and is selectively permeable? |
| A. | Cell wall |
| B. | Nuclear membrane |
| C. | Cell membrane |
| D. | Tonoplast |
| Answer» D. Tonoplast | |
| 1129. |
Which of the following is an example of a liquid fuel? |
| A. | Paraffin wax |
| B. | Coal gas |
| C. | LP.G. |
| D. | Alcohol |
| Answer» E. | |
| 1130. |
Trees take many years to reach maturity. Paper is made from wood pulp. As more people are using recycled paper, fewer trees would be cut down. Which of these graphs shows the result that would be obtained after a few years of carrying out this act of conservation? |
| A. | |
| B. | |
| C. | |
| D. | |
| Answer» C. | |
| 1131. |
Statement-I: Forests, wildlife, minerals, coal, petroleum, natural gas are the examples of exhaustible resources. Statement-II: The resources that can be exhausted by human activities are called exhaustible resources. |
| A. | Statement-I is true. Statement-II is false. |
| B. | Statement-I is false. Statement-II is true. |
| C. | Both statements are true. |
| D. | Both statements are false. |
| Answer» D. Both statements are false. | |
| 1132. |
What is current? |
| A. | The flow of matter |
| B. | The flow of electrons |
| C. | The flow of protons |
| D. | The flow of charge |
| Answer» E. | |
| 1133. |
In the given figure, the filter paper contains starch soaked in potassium iodide solution is connected to the battery as shown. When we write on the wet paper, it has a blue black colour. (i) Iodine is formed at the anode. (ii) Iodine turns blue black in the presence of starch. |
| A. | Only (i) is correct. |
| B. | Only (ii) is correct. |
| C. | Both (i) and (ii) are correct. |
| D. | Neither (i) nor (ii) is correct. |
| Answer» D. Neither (i) nor (ii) is correct. | |
| 1134. |
The unit of calorific value of a fuel is |
| A. | \[^{o}C\] |
| B. | L |
| C. | m/s |
| D. | kJ/kg |
| Answer» E. | |
| 1135. |
Which one of the following is related to inheritance of characters from one generation to another? |
| A. | Cell membrane and cytoplasm |
| B. | Nucleolus and mitochondria |
| C. | Chloroplast and cell membrane |
| D. | Chromosomes and Genes |
| E. | None of these |
| Answer» E. None of these | |
| 1136. |
Which of the following is a non- combustible substance? |
| A. | Coke |
| B. | Diamond |
| C. | Coal |
| D. | Wood |
| Answer» C. Coal | |
| 1137. |
When the world wildlife week is celebrated? |
| A. | First week of November |
| B. | Last week of September |
| C. | First week of October |
| D. | Last week of October |
| E. | None of these |
| Answer» D. Last week of October | |
| 1138. |
The ignition temperature of four substances I, II, III, and IV is \[{{25}^{o}}C\], \[{{35}^{o}}C\], \[{{40}^{o}}C\], and \[{{60}^{o}}C\] respectively. The substances that will catch fire at \[{{36}^{o}}C\] are _____i_____ and ______ii______. The remaining substances can be called _____iii_____ at this temperature. The information in which alternative completes the given statements? |
| A. | i ii iii i II Non-flammable |
| B. | i ii iii II III Non-flammable |
| C. | i ii iii III IV Non-flammable |
| D. | i ii iii IV I Non-flammable |
| Answer» B. i ii iii II III Non-flammable | |
| 1139. |
Which of the following has the lowest percentage of carbon? |
| A. | Lignite |
| B. | Bituminous |
| C. | Anthracite |
| D. | Peat |
| Answer» E. | |
| 1140. |
Blackening of base of utensils while cooking food is due to: |
| A. | Black colour discharged from the utensils. |
| B. | Black colour of the utensils. |
| C. | Improper cooking. |
| D. | Sacking of soot particles from incomplete combustion. |
| E. | None of these |
| Answer» E. None of these | |
| 1141. |
The living organisms of an area and the physical environment in which they live is a/an: |
| A. | Ecosystem |
| B. | Biosphere reserve |
| C. | Wildlife sanctuary |
| D. | National Park |
| E. | None of these |
| Answer» B. Biosphere reserve | |
| 1142. |
Product obtained by burning coal in the presence of air is: |
| A. | Coal gas |
| B. | Coal tar |
| C. | Coke |
| D. | Carbon dioxide |
| E. | None of these |
| Answer» E. None of these | |
| 1143. |
When air is passed through red hot coke, a gaseous fuel is produced. The name of this gaseous fuel and its composition are respectively |
| A. | Natural gas, \[\text{CO+}{{\text{H}}_{2}}\] |
| B. | Producer gas, \[{{\text{N}}_{\text{2}}}\text{+CO}\] |
| C. | Water gas, \[{{\text{H}}_{\text{2}}}\text{+CO}\] |
| D. | None of these. |
| Answer» C. Water gas, \[{{\text{H}}_{\text{2}}}\text{+CO}\] | |
| 1144. |
Goldsmiths blow the outermost zone of flame with a blow-pipe for melting gold and silver. Why do they use the outermost zone? |
| A. | It is the zone of incomplete combustion and is least hot. |
| B. | It is the zone of complete combustion and is the hottest zone. |
| C. | It is the least hot zone and complete combustion takes place in this zone. |
| D. | It is the hottest zone though incomplete combustion takes place in this zone. |
| Answer» C. It is the least hot zone and complete combustion takes place in this zone. | |
| 1145. |
Ravi takes three substances X, Y, and Z. On heating these substances he observes that they bum at different temperatures. He finds out that X catches fire on little heating, while Y and Z do not catch fire. On further heating of Y and Z, he observes that Y catches fire, while Z does not. The correct arrangement of X, Y, and Z in order of their increasing ignition temperatures is |
| A. | \[X<Y<Z\] |
| B. | \[Z<Y<X\] |
| C. | \[Z<X<Y\] |
| D. | \[Y<X<Z\] |
| Answer» B. \[Z<Y<X\] | |
| 1146. |
Functions of a cell are controlled by: |
| A. | Tissues |
| B. | Cell membrane |
| C. | Nucleus |
| D. | Nucleus membrane |
| E. | None of these |
| Answer» D. Nucleus membrane | |
| 1147. |
PCRA refers to: |
| A. | Petrochemical Consumption Research Association |
| B. | Petroleum Conservation Resource Association |
| C. | Petroleum Conservation Research Association |
| D. | Petroleum Consumption Research Association |
| E. | None of these |
| Answer» D. Petroleum Consumption Research Association | |
| 1148. |
Which one of the following is used in extraction of metals? |
| A. | Coke |
| B. | Coal gas |
| C. | Coal tar |
| D. | Petroleum |
| E. | None of these |
| Answer» B. Coal gas | |
| 1149. |
Which of the following functions is performed by the carbohydrates of the plasma membrane? |
| A. | Passive transport |
| B. | Active transport |
| C. | Cell adhesion |
| D. | Cellular recognition |
| Answer» E. | |
| 1150. |
Which of the following is a mismatched pair? |
| A. | World Conservation Union (WCU) - Maintains Red Data Book |
| B. | Jim Corbett National Park, Uttarakhand - First national park established in India |
| C. | Western Ghats and Eastern Himalayas - Biodiversity hotspots of India |
| D. | Indian rhinoceros - An extinct animal |
| Answer» E. | |