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Chapter 3

Science Class 8

44 of 44 questions

44
Total Questions
16
Easy
21
Medium
7
Hard
Q1
easyNatural Resource Classification
Which of the following is an example of an inexhaustible natural resource?
A.Coal
B.Petroleum
C.Sunlight
D.Natural gas
Q2
easyCoal Formation
What is the process of formation of coal from dead vegetation called?
A.Fossilization
B.Carbonisation
C.Decomposition
D.Crystallization
Q3
easyGeological Timeline
How long ago did the formation of coal begin?
A.About 100 million years ago
B.About 200 million years ago
C.About 300 million years ago
D.About 500 million years ago
Q4
easyCoal Products
What is coke?
A.A liquid fuel
B.A tough, porous, black substance that is almost pure carbon
C.A gas produced from coal
D.A type of petroleum product
Q5
mediumCoal Tar Composition
Coal tar is a mixture of approximately how many substances?
A.50 substances
B.100 substances
C.200 substances
D.500 substances
Q6
easyPetroleum Etymology
What does the word 'petroleum' mean?
A.Rock water
B.Rock oil
C.Black gold
D.Earth fuel
Q7
mediumPetroleum Formation
From what type of organisms was petroleum formed?
A.Land plants
B.Forest animals
C.Marine organisms
D.Desert organisms
Q8
mediumOil Industry History
Where was the world's first oil well drilled?
A.Assam, India
B.Pennsylvania, USA
C.Texas, USA
D.Saudi Arabia
Q9
easyPetroleum Processing
What is the process of separating various constituents of petroleum called?
A.Distillation
B.Refining
C.Purification
D.Extraction
Q10
easyPetroleum Products
Which petroleum product is used for surfacing roads?
A.Petrol
B.Kerosene
C.Bitumen
D.Diesel
Q11
easyNatural Gas
What does CNG stand for?
A.Compressed Natural Gas
B.Clean Natural Gas
C.Concentrated Natural Gas
D.Commercial Natural Gas
Q12
mediumEconomic Importance
Why is petroleum also called 'black gold'?
A.Because it is black in color
B.Because it is found underground like gold
C.Because of its great commercial importance
D.Because it is rare like gold
Q13
mediumIndian Resources
Which Indian states have natural gas reserves?
A.Punjab, Haryana, UP
B.Tripura, Rajasthan, Maharashtra
C.Kerala, Tamil Nadu, Karnataka
D.West Bengal, Odisha, Jharkhand
Q14
mediumPetrochemicals
What are petrochemicals?
A.Chemicals used to extract petroleum
B.Chemicals used to refine petroleum
C.Useful substances obtained from petroleum and natural gas
D.Chemicals used to clean petroleum spills
Q15
mediumResource Classification
Why are fossil fuels called exhaustible resources?
A.Because they can be used only once
B.Because they took millions of years to form and will be depleted by human use
C.Because they are expensive
D.Because they cause pollution
Q16
mediumHistorical Applications
Coal gas was first used for street lighting in which city?
A.Paris
B.London
C.New York
D.Berlin
Q17
easyClean Energy
What is the main advantage of CNG as a fuel?
A.It is cheaper than petrol
B.It is less polluting than petrol and diesel
C.It is easier to store
D.It provides more power
Q18
easyCombustion Products
Which gas is produced when coal burns in air?
A.Oxygen
B.Nitrogen
C.Carbon dioxide
D.Hydrogen
Q19
mediumGeological Deposits
Why is oil found above water in petroleum deposits?
A.Oil is formed after water
B.Oil is lighter than water and doesn't mix with it
C.Oil pushes water down
D.Water evaporates leaving oil behind
Q20
mediumConservation Organizations
What is PCRA?
A.Petroleum Conservation Research Association
B.Petroleum Chemical Research Agency
C.Public Coal Research Authority
D.Private Chemical Refinery Association
Q21
easyConservation Tips
Which of the following is NOT a tip given by PCRA for fuel conservation?
A.Drive at constant and moderate speed
B.Switch off engine at traffic lights
C.Ensure correct tire pressure
D.Use air conditioning continuously
Q22
mediumFormation Limitations
Can fossil fuels be prepared in laboratory from dead organisms?
A.Yes, easily with modern technology
B.Yes, but it takes a long time
C.No, because the formation process is very slow and conditions cannot be created in lab
D.No, because we don't know the process
Q23
mediumAncient Environments
What type of environment existed 300 million years ago that led to coal formation?
A.Hot deserts
B.Dense forests in low-lying wetland areas
C.High mountains
D.Deep ocean floors
Q24
easyCarbonisation Process
What happens to vegetation during carbonisation?
A.It turns into water
B.It gets converted to coal under high pressure and temperature
C.It becomes petroleum
D.It completely disappears
Q25
easySynthetic Materials
Which synthetic materials are made from petrochemicals?
A.Cotton and silk
B.Polyester, nylon, and acrylic
C.Wool and jute
D.Leather and fur
Q26
mediumEnvironmental Impact
Why is burning fossil fuels linked to global warming?
A.It produces heat energy
B.It releases carbon dioxide which traps heat in atmosphere
C.It uses up oxygen from air
D.It produces steam
Q27
mediumCoal Tar Products
What products are obtained from coal tar?
A.Only dyes and perfumes
B.Synthetic dyes, drugs, explosives, perfumes, plastics, paints
C.Only medicines
D.Only plastics and paints
Q28
mediumCoal Derivatives
How are naphthalene balls related to coal?
A.They are made from coal directly
B.They are obtained from coal tar
C.They are used to mine coal
D.They have no relation to coal
Q29
mediumGas Composition
What is the main component of natural gas?
A.Carbon dioxide
B.Methane
C.Hydrogen
D.Oxygen
Q30
easyPractical Conservation
Why is it important to switch off engines at traffic lights?
A.To reduce noise pollution
B.To save fuel and reduce emissions
C.To prevent engine overheating
D.To follow traffic rules
Q31
mediumFormation Conditions
What conditions are required for petroleum formation?
A.High oxygen and low pressure
B.Absence of air, high temperature, and high pressure
C.Low temperature and high oxygen
D.Presence of sunlight and air
Q32
easyEnvironmental Comparison
Which is the cleanest fossil fuel among the three?
A.Coal
B.Petroleum
C.Natural gas
D.All are equally clean
Q33
mediumEnergy Alternatives
What happens when known reserves of fossil fuels are exhausted?
A.New reserves will form immediately
B.We will have to rely on alternative energy sources
C.They can be artificially created
D.Nothing will change
Q34
easyMaintenance Benefits
How can regular vehicle maintenance help in fuel conservation?
A.It makes the vehicle look better
B.It ensures optimal engine performance and fuel efficiency
C.It increases vehicle speed
D.It reduces traffic violations
Q35
hardResource Consumption Model
What is the significance of the activity with eatables representing fossil fuels?
A.It shows how to share food
B.It demonstrates how growing population affects resource availability
C.It teaches about different foods
D.It shows cooking methods
Q36
hardGeological Time Scale
Why can't we create fossil fuels artificially in a short time?
A.We lack the technology
B.The natural process takes millions of years under specific geological conditions
C.It's too expensive
D.We don't have the raw materials
Q37
mediumVehicle Efficiency
How does tire pressure affect fuel consumption?
A.Higher pressure always saves fuel
B.Correct tire pressure reduces rolling resistance and improves fuel efficiency
C.Tire pressure has no effect on fuel consumption
D.Lower pressure saves more fuel
Q38
hardIndustrial Applications
What role does coke play in steel manufacturing?
A.It provides color to steel
B.It acts as a reducing agent to remove impurities
C.It cools down the steel
D.It adds strength to steel
Q39
mediumTransportation Methods
Why is pipeline transportation advantageous for natural gas?
A.It's cheaper than road transport
B.Gas can be easily transported through pipes and distributed directly to consumers
C.It's safer than other methods
D.It requires less maintenance
Q40
hardSustainable Solutions
What is the long-term solution to the fossil fuel depletion problem?
A.Finding more fossil fuel reserves
B.Using fossil fuels more efficiently
C.Developing and using renewable energy sources
D.Reducing population
Q41
mediumPollution Effects
How do fossil fuels contribute to air pollution?
A.They absorb oxygen from air
B.They release harmful gases like carbon dioxide, sulfur dioxide, and particulates when burned
C.They produce too much heat
D.They create dust particles
Q42
hardResource Wisdom
What lesson about resource management can we learn from studying fossil fuels?
A.All resources are unlimited
B.We should use resources wisely as they took millions of years to form but can be depleted quickly
C.Only worry about resources when they run out
D.Technology will solve all resource problems
Q43
hardPopulation and Resources
How do the three generations in the activity represent real-world resource consumption?
A.They show different age groups
B.They represent how increasing population consumes limited resources faster
C.They show different income levels
D.They represent different countries
Q44
hardEnvironmental Education
Why is understanding fossil fuels important for environmental awareness?
A.To know where to find them
B.To understand their impact on climate change and the need for sustainable alternatives
C.To use them more efficiently
D.To become a petroleum engineer