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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.
| 1001. |
The given table lists some of the fuels along with their calorific values and ignition temperatures. Fuel Calorific value (KJ/g) Ignition temperature\[{{(}^{o}}c)\] P 100 5 Q 80 50 R 30 60 S 20 70 Which of the following faels is an ideal fuel? |
| A. | P |
| B. | Q |
| C. | R |
| D. | S |
| Answer» C. R | |
| 1002. |
Which of the following statements is true about petroleum? |
| A. | Lighter than water and soluble in it. |
| B. | Heavier than water and insoluble in it. |
| C. | Lighter than water and insoluble in it. |
| D. | Heavier than water and soluble in it. |
| Answer» D. Heavier than water and soluble in it. | |
| 1003. |
What does natural gas mainly consist of? |
| A. | \[{{C}_{2}}{{H}_{6}}\] |
| B. | \[C{{H}_{4}}\] |
| C. | \[{{C}_{3}}{{H}_{8}}\] |
| D. | \[{{C}_{4}}{{H}_{10}}\] |
| Answer» C. \[{{C}_{3}}{{H}_{8}}\] | |
| 1004. |
The substance that catches fire spontaneously in presence of air, at room temperature, is |
| A. | White Phosphorous |
| B. | Rhombic Sulphur |
| C. | Calcium |
| D. | Iron |
| Answer» B. Rhombic Sulphur | |
| 1005. |
In the oil wells, X forms the topmost layer, followed by Y and finally Z. X, Y and Z are respectively |
| A. | Natural gas, oil and water |
| B. | Petroleum gas, oil and natural gas |
| C. | Natural gas, water and oil |
| D. | Petroleum gas, oil and water. |
| Answer» B. Petroleum gas, oil and natural gas | |
| 1006. |
Which of the following is the result of drought? |
| A. | Flooding |
| B. | Volcanic eruptions |
| C. | Decreased production of food |
| D. | Increased photosynthesis in plants |
| Answer» D. Increased photosynthesis in plants | |
| 1007. |
Which acid is present in lemon juice that acts as an electrolyte? |
| A. | Sulphuric acid |
| B. | Nitric acid |
| C. | Hydrochloric acid |
| D. | Citric acid |
| Answer» E. | |
| 1008. |
An electric spark is struck between two electrodes placed near each other, inside a closed tank full of petrol. What will happen? |
| A. | Spontaneous combustion of petrol |
| B. | Explosion |
| C. | Slow combustion of petrol |
| D. | Nothing will happen |
| Answer» E. | |
| 1009. |
Which of the following effects of current is responsible for the deflection of a compass needle in an electric field? |
| A. | Heating effect of current |
| B. | Magnetic effect of current |
| C. | Conducting effect of heat |
| D. | Chemical effect of current |
| Answer» C. Conducting effect of heat | |
| 1010. |
Consider the given diagram X and Y in the given figure represent |
| A. | Sulphur oxides and nitrogen oxides |
| B. | Silicon oxides and nitrogen oxides |
| C. | Sulphur oxides and chlorine gas |
| D. | Silicon oxides and chlorine gas |
| Answer» B. Silicon oxides and nitrogen oxides | |
| 1011. |
Which type of tissue is responsible for receiving, interpreting and producing a response to stimuli? |
| A. | Muscle tissue |
| B. | Nervous tissue |
| C. | Epithelial tissue |
| D. | Connective tissue |
| Answer» C. Epithelial tissue | |
| 1012. |
A During the electrolysis of \[\text{CuS}{{\text{O}}_{\text{4}}}\]solution, sulphate ions move towards the |
| A. | copper electrode. |
| B. | anode. |
| C. | cathode. |
| D. | zinc electrode. |
| Answer» C. cathode. | |
| 1013. |
In which of the following years Wildlife Protection act was passed? |
| A. | 1972 |
| B. | 1970 |
| C. | 1982 |
| D. | 1990 |
| Answer» B. 1970 | |
| 1014. |
Consider the following statements and select the option which correctly identifies true (T) and false (F) ones.(i) Robert Brown discovered nucleus in the cells.(ii) The plasma membrane is made up of a double layer of lipid molecules and protein molecules.(iii) Chloroplast helps in osmoregulation and maintains the osmotic pressure in a cell.(iv) Carbohydrates and fats are completely oxidised with the help of enzymes present in the mitochondria. |
| A. | (i)(ii)(iii)(iv)TTFF |
| B. | (i)(ii)(iii)(iv)TTFT |
| C. | (i)(ii)(iii)(iv)TFTT |
| D. | (i)(ii)(iii)(iv)TFFT |
| Answer» C. (i)(ii)(iii)(iv)TFTT | |
| 1015. |
Why is the proper management of the environment important? |
| A. | Humans can continue to live. |
| B. | Animals would not become extinct |
| C. | The balance nature can be preserved. |
| D. | All of the above. |
| Answer» E. | |
| 1016. |
The following figure represents the different zones of a flame. The information in which alternative correctly represents the different zones of the flame? |
| A. | i ii iii Zone of complete combustion Zone of partial combustion Zone of unburnt wax vapours |
| B. | i ii iii Zone of partial combustion Zone of unburnt wax vapours Zone of complete combustion |
| C. | i ii iii Zone of unburnt Wax vapours Zone of partial combustion Zone of complete combustion |
| D. | i ii iii Zone of complete combustion Zone of partial combustion Zone of unburnt Wax vapours |
| Answer» D. i ii iii Zone of complete combustion Zone of partial combustion Zone of unburnt Wax vapours | |
| 1017. |
Which of the following represents the correct decreasing order of boiling points of the given liquids. |
| A. | Paraffin wax > Diesel > Kerosene > Petrol |
| B. | Diesel > Kerosene > Petrol > Paraffin wax |
| C. | Kerosene > Petrol > Paraffin wax > Diesel |
| D. | Petrol > Paraffin wax > Diesel > Kerosene |
| Answer» B. Diesel > Kerosene > Petrol > Paraffin wax | |
| 1018. |
Natural resources are classified as:P. ExhaustibleQ. InexhaustibleSome natural resources are(i) Petrol, diesel(ii) Coal, petroleum(iii) Air, water(iv) Cow dung cakes, sunlight(v) Forests, mineralsWhich of the following represents the correct match? |
| A. | P-(iii), (iv);Q-(i), (ii), (v) |
| B. | P-(i), (ii), (v);Q-(iii), (iv) |
| C. | P-(ii), (v);Q-(i), (iii), (iv) |
| D. | None of these is a correct match. |
| Answer» C. P-(ii), (v);Q-(i), (iii), (iv) | |
| 1019. |
When an oil well is drilled through rocks, which of the following comes out first? |
| A. | Coal gas |
| B. | Marsh gas |
| C. | Natural gas |
| D. | Carbon dioxide |
| Answer» D. Carbon dioxide | |
| 1020. |
Which of the following tables correctly represents the substance with the type of combustion? |
| A. | Substance Type of combustion LPG Rapid Phosphorus Spontaneous Dynamite Explosion |
| B. | Substance Type of combustion LPG Spontaneous Glass Explosion Dynamite Rapid |
| C. | Substance Type of combustion Phosphorus Explosion LPG Rapid Dynamite Spontaneous |
| D. | Substance Type of combustion LPG Spontaneous Glass Rapid Dynamite Explosion |
| Answer» B. Substance Type of combustion LPG Spontaneous Glass Explosion Dynamite Rapid | |
| 1021. |
Correct the given statements by replacing the underlined words and select the correct option.(i) The viscous fluid present in the nucleus is called ___cytoplasm___.(ii) ___Vacuoles___ are rod shaped structures which oxidise food to provide energy.(iii) ___Mitochondria___ contain green pigment chlorophyll and take part in photosynthesis.(iv) ___Lysosomes___ take part in synthesis of proteins. |
| A. | (i)-Nucleoplasm,(ii)-Lysosomes,(iii)-Plastids,(iv)-Centrosomes |
| B. | (i)-Protoplasm,(ii)-Ribosomes,(iii)-Centrosomes,(iv)-Golgi bodies |
| C. | (i)-Nucleoplasm,(ii)-Mitochondria,(iii)-Chloroplasts,(iv)-Ribosomes |
| D. | (i)-Protoplasm,(ii)-Plastids,(iii)-Chloroplasts,(iv)-Ribosomes |
| Answer» D. (i)-Protoplasm,(ii)-Plastids,(iii)-Chloroplasts,(iv)-Ribosomes | |
| 1022. |
Which of the following processes will help in the conservation of natural resources? |
| A. | The maintaining of the earth's resources in their original state |
| B. | The using of earth's resources wisely |
| C. | The using of resources not in a wasteful manner |
| D. | Both (B) and (C) |
| Answer» E. | |
| 1023. |
What prevents soil erosion? |
| A. | Allowing herbivorous animals to graze excessively |
| B. | Growing plants to form the soil cover |
| C. | Increasing fertility |
| D. | Making the land sloppy |
| Answer» C. Increasing fertility | |
| 1024. |
Refer to the given paragraph.X and Y are the two type of cells. The X have a well organised nucleus which is separated from the cytoplasm by the nuclear membrane. On the other hand, Y do not have a true nucleus and their nuclear material is in direct contact with cytoplasm. Identify X and Y and select the correct option. |
| A. | X could be Mycoplasma whereas Y could be Amoeba. |
| B. | X could be Amoeba whereas Y could be Mycoplasma. |
| C. | X could be nerve cells whereas Y could be xylem cells. |
| D. | X could be xylem cells whereas Y could be nerve cells. |
| Answer» C. X could be nerve cells whereas Y could be xylem cells. | |
| 1025. |
Two friends Gaurav and Samik took two glass plates and two lighted candles. Gaurav held the glass plate inside the flame of the candle and Samik held it slightly above the candle flame. Which of the following statements is correct? |
| A. | Both Gaurav's and Samik's glass plates will get blackish soot deposition. |
| B. | Neither Samik's nor Gaurav's glass plate will have blackish soot deposition. |
| C. | Gaurav's glass plate will have blackish soot deposition but Samik's glass plate will not. |
| D. | Samik's glass plate will have blackish soot deposition but Gaurav's glass plate will not |
| Answer» D. Samik's glass plate will have blackish soot deposition but Gaurav's glass plate will not | |
| 1026. |
Neha took a burning candle and covered it with an empty glass by putting it upside down. She observed that the candle burns for some time before it finally goes off. What is the reason for this? |
| A. | The candle keeps burning for some time as long as the air present in the glass is available to it and then it goes off. |
| B. | The ignition temperature of the candle becomes low due to glass cover hence it goes off. |
| C. | The candle keeps burning as long as the complete wax melts away and then goes off. |
| D. | Oxygen is produced when the candle burns. This oxygen keeps the candle burning for some time and then it goes off. |
| Answer» B. The ignition temperature of the candle becomes low due to glass cover hence it goes off. | |
| 1027. |
The gas that is used in fire extinguishers is |
| A. | Nitrogen |
| B. | Hydrogen |
| C. | Sulphur dioxide |
| D. | Carbon dioxide |
| Answer» E. | |
| 1028. |
Why are metals good conductors of electricity? |
| A. | In metals/outer electrons are strongly bound to the atom. |
| B. | In metals, outer electrons are loosely bound to the atom. |
| C. | In metals, inner electrons are loosely bound to the atom. |
| D. | In metals, protons can detach from the nucleus and conduct electricity. |
| Answer» C. In metals, inner electrons are loosely bound to the atom. | |
| 1029. |
Which of these cell organelles and their functions is matched correctly? |
| A. | Chloroplast - Controls all activities |
| B. | Nucleus - Gives shape to the body |
| C. | Cell wall - Synthesize food |
| D. | Mitochondria - Provides energy |
| Answer» E. | |
| 1030. |
Which of the following is the result of the introduction of exotic species? |
| A. | Conservation of wildlife. |
| B. | Maintenance of biodiversity. |
| C. | Adverse affect on native species adversely. |
| D. | The survival of native species. |
| Answer» D. The survival of native species. | |
| 1031. |
?X? is a good conductor of electricity. Which of the following could be ?X?? |
| A. | Solid sodium chloride |
| B. | Vinegar |
| C. | Distilled water |
| D. | Liquid oxygen |
| Answer» C. Distilled water | |
| 1032. |
What is the main aim of conserving living organisms? |
| A. | To increase the world's population of organisms |
| B. | To prevent the extinction of endangered species |
| C. | To help the students of botany and zoology |
| D. | To help in ecotourism |
| Answer» C. To help the students of botany and zoology | |
| 1033. |
Which of the following cell organelles receives the substances synthesized and released by the ER, condenses, modifies, packs and releases them in the form of secretory vesicles? |
| A. | Golgi complex |
| B. | Mitochondrion |
| C. | Lysosome |
| D. | Ribosome |
| Answer» B. Mitochondrion | |
| 1034. |
Which of these is the main constituent of petroleum gas? |
| A. | Butane |
| B. | Propane |
| C. | Methane |
| D. | Ethane |
| Answer» B. Propane | |
| 1035. |
During fractional distillation, the crude petroleum is heated to |
| A. | \[{{600}^{\text{o}}}C\]. |
| B. | \[400-{{500}^{\text{o}}}C\]. |
| C. | \[{{200}^{\text{o}}}C\]. |
| D. | \[{{100}^{\text{o}}}C\]. |
| Answer» C. \[{{200}^{\text{o}}}C\]. | |
| 1036. |
Select the option which correctly match the marked parts P, Q, R and S in the given figure with the functions given below. (i) Oxidation of food during cell respiration (ii) Storage and secretion of substances from the cell (iii) Allow minerals to pass through (iv) Transport of substances within cell. |
| A. | P Q R S (iv) (iii) (ii) (i) |
| B. | P Q R S (i) (iv) (iii) (ii) |
| C. | P Q R S (iii) (ii) (iv) (i) |
| D. | P Q R S (iii) (ii) (i) (iv) |
| Answer» E. | |
| 1037. |
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) | |
| 1038. |
Hydrogen is not considered a good fuel because it |
| A. | Can be liquefied |
| B. | Is limited in nature |
| C. | Has very high calorific value |
| D. | Has very high ignition temperature |
| Answer» D. Has very high ignition temperature | |
| 1039. |
Which of the following is the non-living part of the plant cell? |
| A. | Nucleus |
| B. | Cytoplasm |
| C. | Mitochondrion |
| D. | Cell wall |
| Answer» E. | |
| 1040. |
Refer to the given terms. (i) RBC (ii) WBC (iii) Blood (iv) Muscle (v) Blood vessels (vi) Brain (vii) Heart (viii) Lung (ix) Sperm (x) Kidney Select the option which correctly classifies the given terms into cell, tissue and organ. |
| A. | Cell Tissue Organ (i), (ii), (ix) (iii), (iv) (v), (vi), (vii), (viii), (x) |
| B. | Cell Tissue Organ (i), (ii), (iii), (x) (iv), (v) (vi), (vii), (viii), (ix) |
| C. | Cell Tissue Organ (i), (ii), (iv), (ix) (iii), (v), (vi) (vii), (viii), (x) |
| D. | Cell Tissue Organ (i), (ii), (ix) (iii), (iv), (v) (vi), (vii), (viii), (x) |
| Answer» B. Cell Tissue Organ (i), (ii), (iii), (x) (iv), (v) (vi), (vii), (viii), (ix) | |
| 1041. |
What should be done for species preservation? |
| A. | Protecting areas that have endangered species |
| B. | Protecting the breeding grounds of endangered species |
| C. | Issuing hunting licence to VIPs |
| D. | Both (A) and (B) |
| Answer» E. | |
| 1042. |
Which one of the following is a liquid connective tissue? |
| A. | Bone |
| B. | Blood |
| C. | Pancreas |
| D. | Liver |
| Answer» C. Pancreas | |
| 1043. |
The following table lists some substances as combustible and non-combustible. Combustible Non-combustible Wood Glass Magnesium Charcoal Kerosene Stone Which of the following substances is listed incorrectly in the table? |
| A. | Glass |
| B. | Charcoal |
| C. | Kerosene |
| D. | Magnesium |
| Answer» C. Kerosene | |
| 1044. |
In fractionating column, various fractions are obtained at various heights of the column. As the vapours reach at a height where temperature is equal to or just below the boiling point of that fraction, it will |
| A. | Condense to form a liquid |
| B. | Remain in gaseous state |
| C. | Condense to form a solid |
| D. | Escape from the column. |
| Answer» B. Remain in gaseous state | |
| 1045. |
Which of the following tables correctly matches the given zones of a candle flame with their respective characteristics? |
| A. | Zone Characteristic i Innermost Least hot and black ii Luminous Moderately hot and yellow |
| B. | Zone Characteristic i Outermost Hottest and black ii Luminous Least hot and blue |
| C. | Zone Characteristic i Non-luminous Least hot and blue ii Innermost Hottest and black |
| D. | Zone Characteristic i Non-luminous Moderately hot and yellow ii Outermost Least hot and black |
| Answer» B. Zone Characteristic i Outermost Hottest and black ii Luminous Least hot and blue | |
| 1046. |
Iron vessels are coated with tin to |
| A. | give better shining. |
| B. | increase the strength. |
| C. | increase weight. |
| D. | prevent rusting. |
| Answer» E. | |
| 1047. |
_____ is the power house of the cells. |
| A. | Ribosome |
| B. | Mitochondria |
| C. | Nucleus |
| D. | Cell wall |
| E. | None of these |
| Answer» C. Nucleus | |
| 1048. |
Which of the following faels is the most efficient among the given fuels? |
| A. | Type of fuel Energy produced (kJ) Amount taken P 55000 1 kg |
| B. | Type of fuel Energy produced (kJ) Amount taken Q 90000 2 kg |
| C. | Type of fuel Energy produced (kJ) Amount taken R 150000 1 kg |
| D. | Type of fuel Energy produced (kJ) Amount taken S 55000 3 kg |
| Answer» D. Type of fuel Energy produced (kJ) Amount taken S 55000 3 kg | |
| 1049. |
Which of the following statements are true? I. Yellow flames are ideal for heating. II. The substances which vaporise during burning give flames. III. Luminous zone contains unburnt carbon particles. IV. The non-luminous zone has highest temperature. |
| A. | I, II and III |
| B. | I, II and IV |
| C. | II, III and IV |
| D. | I, III and IV |
| Answer» D. I, III and IV | |
| 1050. |
Which of the following is/are advantage(s) of forests? |
| A. | Forests provide us with oxygen. |
| B. | They protect soil and provide habitat to a large number of animals. |
| C. | They help in bringing good rainfall in neighboring areas. |
| D. | All of these |
| Answer» E. | |