Test Details

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Coal and Petroleum - NCERT,Combustion and Flame - NCERT

Chemistry

Feb 16, 4:00 PM

40 minutes

Feb 16, 4:40 PM

80.0 marks

MCQ

40 questions

Shahid Hussain

Adaptive and blank

Class Details

Science &Maths

Class 8&7

Science &Maths

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Question Text

Question 1 :
State True or False. Coal and petroleum are formed from the dead remains of organisms and are known as fossil fuels.

Question 2 :
State True or False. Coal tar is a black, thick liquid with an unpleasant smell.

Question 5 :
State True or False. It is difficult to transport natural gas through pipes.

Question 7 :
State True or False.Under high temperature and pressure, dead plants get slowly converted to coal.

Question 8 :
State True or False. Oxygen in air is an exhaustible natural resource.

Question 9 :
State True or False. Forests and coal are exhaustible natural resources.

Question 11 :
Various materials which are obtained from nature are called natural resources. Which of the following is not a natural resource?

Question 12 :
State True or False. Decantation is a method to separate a mixture of petroleum and water.

Question 14 :
State True or False.The slow process of conversion of dead vegetation into coal is called carbonisation .

Question 15 :
State True or False. CNG is less polluting fuel than petrol and diesel.

Question 16 :
State True or False. Resources which are present in unlimited quantity in nature are called exhaustible natural resources.

Question 18 :
Process of separation of different constituents from petroleum is called ___________

Question 21 :
What cools the combustible material so that its temperature is brought below its ignition temperature?

Question 22 :
Manu was heating oil to fry potato chips. The cooking oil all of a sudden caught fire; he poured water to extinguish the fire. Do you think this action was suitable?

Question 25 :
Which of the following is/are an example(s) of a gaseous fuel.

Question 26 :
Can fire be controlled by removing one or more of these requirements?

Question 29 :
Is it True or false that middle zone is the hottest zone of a flame?

Question 30 :
Name the unit in which the calorific value of a fuel is expressed.

Question 31 :
Small pieces of pinewood dipped in ______were used as matches in ancient Egypt.

Question 35 :
On placing an inverted tumbler over a burning candle, the flame extinguishes after some time. This is because of non- availability of

Question 38 :
The amount of heat energy produced on complete combustion of 1 kg of a fuel is called its __________

Question 40 :
A combustible substance can catch fire or burn as long as its temperature is lower than its ignition temperature.

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