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Chemistry रसायन विज्ञान Quiz #45

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Chemistry रसायन विज्ञान Quiz #45 Hello  Aspirants, Here we are providing you Chemistry Quiz, chemistry objective questions and answers, chemistry mcq questions, chemistry quiz questions and answers for class 12 , chemistry multiple choice questions and answers for competitive exams, chemistry objective questions and answers for competitive exams, chemistry mcq questions for class 11, science quiz questions and answers. It will going to help you in coming SSC CGL, SSC CPO exams. Chemistry MCQ 

Chemistry रसायन विज्ञान Quiz #45

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Abrasion index of blast furnace coke should be around __________ percent.
The heat of combustion of a fuel
High excess air in combustion of fuels results in
Presence of free moisture in coal is most disadvantageous during
Proximate analysis of coal determines its __________ content.
In flue gas analysis by Orsat's apparatus, carbon dioxide is absorbed by
With increase in moisture content of coal, its
__________ has the widest inflammability limit (explosion limit) of all the gases.
Percentage of methane in coke oven gas may be around
Caking index of the coal blend used for the manufacture of metallurgical coke should be around
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Chemistry रसायन विज्ञान Quiz #45

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Chemistry रसायन विज्ञान Quiz #44

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Which of the following is not a by-product recovered in a high temperature coal carbonisation plant ?
Flue gas discharge velocity through chimney of a big thermal power plant may be around __________ m/sec.
Which of the following is used for making the explosive 'TNT' ?
Which of the following gaseous fuels has the lowest calorific value ?
Calorific value of coal middling generated in coal washeries during washing of coal may be around __________ Kcal/kg.
Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is __________ percent.
A coal with high ash content is undesirable, as
Gray King Assay and Swelling Index of a coal is a measure of its
Wobbe index' is a characteristic of
Combustion of pulverised coal as compared to that of lump coal
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Chemistry रसायन विज्ञान Quiz #44

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Chemistry रसायन विज्ञान Quiz #43

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A fuel containing carbon and carbon monoxide (but containing no hydrogen or its compounds) is burnt in pure oxygen at constant pressure. Its gross calorific value as compared to net calorific value will be
Softening temperature of coal ash is a measure of the __________ of coal.
Dry air required to burn 1 kg of carbon completely may be around __________ kg.
Pick out the wrong statement.
Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the
Pensky-Marten apparatus is used for those oils, whose flash points are __________ °F.
For every 10% increase in the excess air; the fuel consumption increases by __________ percent.
The temperature at which plastic layer formation takes place during carbonisation of coal varies from __________ °C.
Presence of free moisture in coal during its high temperature carbonisation
Fuel gases containing hydrocarbons (ie.g. coke oven gas) are not preheated before burning, mainly because
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Chemistry रसायन विज्ञान Quiz #43

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Chemistry रसायन विज्ञान Quiz #41

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Gross & net calorific value is the same for
Ratio of primary air to secondary air increases with increase in the rank of coal, because the
Stack heat losses can be minimised by
Carbon Content by weight in air dried wood may be about __________ percent.
Higher percentage of ash in coal meant for the production of metallurgical grade coke
A coal containing very high percentage of durain is called __________ coal.
Laboratory gas is obtained by the cracking of
Which of the following constituents of coal is the most important in the production of coke?
Which of the following is not a product of tar distillation ?
Junker's calorimeter is used to determine the calorific value of
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Chemistry रसायन विज्ञान Quiz #41

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Chemistry रसायन विज्ञान Quiz #40

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Of the following which one pollutes the air of abig city ?
“Firefighting clothes” are made from
Water gas is the mixture of
Brass is made of
Which type of fire extinguisher is used for petroleum fire ?
The function of skimming tank in sewage treatment is to remove
Which one of the following is not a greenhouse gas ?
Black lung disease occurs in people working in
Which one of the following is known as the brown coal ?
The chief source of naphthalene is
Chemistry रसायन विज्ञान Quiz #40
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·         Chemistry रसायन विज्ञान Quiz #40

·         Chemistry रसायन विज्ञान Quiz #39

·         Chemistry रसायन विज्ञान Quiz #38

·         Chemistry रसायन विज्ञान Quiz #37

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Chemistry रसायन विज्ञान Quiz #39

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Which of the following is an iron ore ?
Which one of the following is an example of a gel ?
Bakelite is a copolymer of Phenol and
When a spoon is to be electroplated with nickel the spoon is
The Bhopal tragedy was caused by the gas
Which one of the following contributes largely to the greenhouse effect ?
Wood spirit is
Which of the following processes is used for the production of Biodiesel?
One property of ammonia is
Find the odd one:
Chemistry रसायन विज्ञान Quiz #39
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·         Chemistry रसायन विज्ञान Quiz #40

·         Chemistry रसायन विज्ञान Quiz #39

·         Chemistry रसायन विज्ञान Quiz #38

·         Chemistry रसायन विज्ञान Quiz #37

 

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Chemistry रसायन विज्ञान Quiz #38

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Natural rubber is the polymer of:
In addition to hydrogen the other abundant element present on Suns surface is
Which of the following is the major constituent of LPG?
Ozone layer is present in
An electric iron has a heating element made of:
The process of covering water pipes made of Iron with Zinc layer to prevent corrosion is called :
The particle required to continue the chain process of Uranium fission is :
Which of the following is used to increase the antiknocking property of petrol
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The element used for making solar cells is
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·         Chemistry रसायन विज्ञान Quiz #40

·         Chemistry रसायन विज्ञान Quiz #39

·         Chemistry रसायन विज्ञान Quiz #38

·         Chemistry रसायन विज्ञान Quiz #37

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Chemistry रसायन विज्ञान Quiz #37

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The chemical bahaviour of an atom depends upon
A powerful eye irritant present in smog is
When water itself combines chemically with some element or mineral it is called
The electronic configuration of an atom having atomic number 20 is
The most reactive among the halogens is
The major component in the LPG is
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Burning pyrites ore gives out
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·         Chemistry रसायन विज्ञान Quiz #38

·         Chemistry रसायन विज्ञान Quiz #37

·         Chemistry रसायन विज्ञान Quiz #36

·         Chemistry रसायन विज्ञान Quiz #35

·         Chemistry रसायन विज्ञान Quiz #34

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Chemistry रसायन विज्ञान Quiz #36

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The most abundant constituent of atmospheric air is
Which mineral is the ore Of aluminium?
Which gas is used for converting vegetable oils into saturated fats ?
Chemical name of bleaching powder is
Alcoholic ( OH) group can be identified by
The total energy of revolving electron in an atom
Conduction band electrons have more mobility than holes because they
The mass number of a nucleus is.
Identify the metal which is nontoxic in nature
The gas that usually causes explosions in coal mines is
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·         Chemistry रसायन विज्ञान Quiz #38

·         Chemistry रसायन विज्ञान Quiz #37

·         Chemistry रसायन विज्ञान Quiz #36

·         Chemistry रसायन विज्ञान Quiz #35

·         Chemistry रसायन विज्ञान Quiz #34

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Chemistry रसायन विज्ञान Quiz #35

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Carbon dioxide is
An atom of an element has atomic number 17 and mass number36 The number of neutrons in its nucleus is
The resources which can be used continuously year after year ate called
Refrigerators keep food unspoiled because
Which of the following elements is not present in stainless steel?
Select the one which is not a mixture:
When Hydrogen starts burning in air it produces ?
Mercury is a :
Spirit in contact with body gives cool sensation because it is :
Taj Mahal is greatly affected due to :
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·         Chemistry रसायन विज्ञान Quiz #38

·         Chemistry रसायन विज्ञान Quiz #37

·         Chemistry रसायन विज्ञान Quiz #36

·         Chemistry रसायन विज्ञान Quiz #35

·         Chemistry रसायन विज्ञान Quiz #34

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