Write True/False against the following statements.
(a) Oxygen in air is an exhaustible natural resource.
(b) Resources which are present in unlimited quantity in nature
are called exhaustible natural resources.
(c) Wildlife is an exhaustible natural resource.
(d) Under high temperature and pressure, dead plants get slowly
converted to coal.
(e) CNG is less polluting fuel than petrol and diesel
Fill in the blanks.
(a) The slow process of conversion of dead vegetation into coal is
called__________.
(b) Coal and petroleum are formed from the dead remains of
organisms and are known as __________.
(c) The black thick liquid with __________ smell is known as coal
tar.
(d) During the processing of coal to get coke, coal tar and
__________ are also obtained.
(e) The process of separating the various constituents of
petroleum is known as __________.
(f) Excessive burning of fossil fuels is a major cause of __________.
The underlined words in the following sentences have been
jumbled up. Write them in their correct form.
(a) Loca is obtained from mines.
(b) Umpetlore is a fossil fuel.
(c) Rineryfe is a place where various fractions of peroleum are
separated.
(d) Keenrose is a fuel used in jet crafts.
(e) Nutsgilh is an example of inexhaustible natural resources
Fill in the blanks in the following sentences.
(a) Coal is one of the ________ used to cook food.
(b) When heated in air, coal burns and produces mainly ________
gas.
(c) Coal tar is a black, thick ________ with an ________ smell.
(d) Petroleum, ________ and ________ are fossil fuels.
(e) Forests and coal are ________ natural resources.
What does CNG stand for and why is it considered to be a better fuel than petrol?
You are provided with a mixture of petroleum and water. Can
you suggest a method to separate the two?
Choose the correct statement from the following:
(a) It is difficult to transport natural gas through pipes.
(b) The disadvantage of natural gas is that it can not be used
directly for burning in homes.
(c) Natural gas is stored under high pressure as compressed
natural gas.
(d) Natural gas cannot be used for power generation
Petroleum was formed from organisms:
(a) living on the land (c) living in the sea
(b) living on the plants (d) living on the rocks
+91 94284 01196 (WhatsApp only)
C-15, Suvidhapark Society, Amitnagar circle, Karelibaug, Vadodara (390018)
© Copyright 2025. Doubtora. All Rights Reserved
