Mineral coal - class-IX
Description: mineral coal | |
Number of Questions: 72 | |
Created by: Neema Pandya | |
Tags: energy fossil fuels carbon and fuel coal and petroleum rocks and minerals chemistry world energy needs coal, petroleum and petrochemicals biology ecology physics |
Peat coal contains about _____ % carbon.
Which of the primary state in transformation of coal?
What percentage of carbon in Bituminous coal?
The purest form of coal is:
The variety of coal used as household coal is:
Which of the following has the maximum density
Which of the following conditions regarding a chemical process ensures its spontaneity at all temperature ?
.......... has the highest percentage of carbon.
.......... is the common variety of coal used in household.
__________ has the lowest percentage of carbon.
Percentage of carbon present in an air dried sample of anthracite is:
The variety of coal used as old house coal is:
Which form of coal has the highest carbon content in it?
Peat is the first stage product of coal consisting of $60$% carbon.
Coal is mainly found in which rocks?
Other than Carbon what are the elements present in coal?
Which of the following states is the largest producer of lignite coal?
The coal with highest ash content is?
Which of the following will give off less heat per given unit weight?
The best coal suitable for the production of energy is_________________.
The percentage of carbon in peat is:
Name the system that is mainly employed for the disposal of fly ash.
The elements that are combustible in the fuel are:
The major content of coal in India is:
What is the percentage of ash content in Indian coal?
What is pulverised coal?
On which factor does the calorific value of coal depend on?
In India, about ______ % of total power is generated by using nuclear energy.
Bituminous is a:
___________ is a brownish-black coal with generally high moisture and ash content, and the lowest carbon content.
Lignite is:
Which of the following type of coal is having lowest carbon content and heating value.
What chemical reaction makes biodiesel?
Which is the primary state in transformation of coal?
The calorific value of lignite is about _____ kJ/g.
Select the correct statement from the given:
Which among the following coal contains highest $\%$ of Carbon?
The highest grade of coal, whose surface is shining and has the highest calorific value, is:
The energy of a neutron released during a fission process should be reduced by about ______ part to convert it into a thermal neutron.
Which of the following is an optional form of energy ?
How much energy is produced when two$ _1H^2$ nuclei fuse to produce $ _1H^3$ and $ _1H^1$ ?
Properties of one of the mineral coal is given below. Identify the mineral coal.
(1) It is a matured form of mineral coal.
(3) Its heat energy is about $33\, kJ \,gram^{-1}$
What is the main constituent of coal?
Coal found in deeper strata of earth is:
The process of conversion of dead vegetation into coal is termed as:
Which of the following is basic compound present in coal tar?
The main constituent of coal is:
From where mineral coal is obtained in Gujarat?
Coal mining has been known, since :
Coal, natural gas and petroleum are examples of_________.
The precursor of coal is:
What are the conditions required for the formation of coal?
Coal is formed from:
Which is the best quality coal?
Which country tops in coal production?
What is the percentage of free carbon in lignite?
Coal gas mainly consists of high molecular mass aromatic hydrocarbons.
What is the percentage of free carbon in peat?
What is the percentage of free carbon in bituminous coal?
What is the percentage of free carbon in anthracite?
Coal is free carbon.
Statement: Coal tar contains large number of aliphatic hydrocarbons.
Carbonisation of coal is done to meet the demand coke and coal tar.
Cresols present in coal tar are __________ in nature.
Anthracene present in coal tar is __________ in nature.
Which two transportation means move nearly two-thirds of all U.S. coal shipments?
The second largest market for coal is:
Possibility of occurrence of coal in an area, is determined by study of
The slow process of conversion of dead vegetation into coal is called: