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WHAT IS THE FULL FORM OF CNG AND LPG ?????????
oxygen, nitrogen, carbondioxide, carbon monoxide--------which is odd one out and why
list out 10 combustible materials and 10 non combustible materials
What is S.I unit of calorific value?
why hydrogen not used as a fuel ?
name two solid fuels,two liquid fuels and two gasious fuel
Is rusting of iron a combustion process ?
what is the difference between combustible and inflammable substances?
what is ideal fuel?
WHY DO WE WRAP A BLANKET AROUND A PERSON WHOSE CLOTHES CAUGHT FIRE
What is rapid combustion?Give examples.
how is cough formed in our body?????
difference between rapid combustion , spontaneous combustion and explosion
list some characteristics of an ideal feul?
What is the difference between burning of coal and burning of candle ?
how many types of combustion are there explain them
Matchsticks are made from 3 substance
Are they all are nonmetal?
which of them make fricition
distinguish between combustible and non combustible substances ,giving three examples of each
all combustible substance are not fuel. Why??
why do you have to use paper or kerosene oil to start fire in wood or coal
Calorific value of cow dung cakes is 7000 J/KG. How much cow dung cakes are required to produce heat energy of 35000 J ?
please answer to this question and its chemistry, COUMBUSTION AND FLAME.
some judicious use of fossil fuels.
When a hydrocarbon fuel is burnt, it always gives out carbon dioxide and water vapour. Do you agree? Give reasons.
what is ideal fuel.
What are inert gases?give some examples?
Why does a goldsmith blow the outermost zone of a flame with metallic blowpipe for melting gold and silver?
what's the advantage of fish having a streamlined body ?
The blue zone in a candle flame is blue in colour due to complete combustion. Complete combustion takes place in invisible (non-luminous) zone also. Instead of becoming blue in colour, why is it invisible to us?
give 3 conditions which are necessary for combustion?
Green leaves do not burn easily while dry leaves catch fire easily.Explain.
Is LPG a better domestic fuel than wood and why ?
state the conditions UNDER WHICH COMBUSTION OCCURS
NAME ONE FUEL WHICH BURNS WITHOUT GIVING OFF WATER VAPOUR? AND WHY?
What is calorific value ?
WHY DOES A MATCHSTICK BURN ON RUBBING IT ON THE SIDE OF THE MATCHBOX
WHEN THE CLOTHES OF A PERSON CATCH FIRE,HE SHOULD BE COVERED WITH A BLANKET WHY?
why is hydrogen not used as fuel though it has highest calorific value?
Why do forest fire occurs during hot summers?
' Gaseous fuels are better than liquids and solid fuels'. COMMENT.
Why does a matchstick not burn on its own?
WHY CARBON DIOXIDE IS CONSIDERED AS THE BEST FIRE EXTINGUISHER?
Only gases burn with a flame. But when you burn wood, it initially burns with a flame. Later, it only glows without a flame. Why?
WHAT PROBLEM WILL ARISE IF A FUEL HAS AN IGNITION TEMPERATURE LOWER THAN THE AVERAGE ROOM TEMPERATURE ? NAME THE TYPE OF COMBUSTIONWILL OCCUR IN THIS CASE
can the process of rusting be called combustion need answer with explanation and if possible give some examples but explation is important
are yaar my teacher doesnt know the answer to this question
is charcoal a inflammable substance?if not then list the items which are inflammable????
What is the difference between Spontaneous, rapid and explosion type of combustion
a)Which of the following fuels is expected to leave a residue upon burning.
a)coal b)petrol c)LPG
What are non-combustible substances? Explain with examples.
An ideal fuel has .......... calorific value .
why should water not be used to put off fire caused by burning of petrol?
How has the use of CNG in motor vehicles reduced pollution in big cities?Explain
Calorific value of Cowdung is 7000kg. How much cowdung cakes are required to produce heat energy of 35000 J? Explain with steps.
Write an Activity - To study Ignition Temperature Using Paper Cup .
your LPG gas stove at home is giving a yellow flame. What can this mean?
Experts please answer soon :-
Explain in brief why wood is considered to be an ideal fuel for cooking in a remote village on a mountain? it's urgent :)
what is the difference between combustion and burning?
The candle flame produces ____________ and _____________ as the undesirable byproducts of combustion.
paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not
Please classify the following substances as combustible/non-combustible:-
(a) Iron nails; (b) Stone piece; (c) Straw; (d) Glass
Thank You in advance! :)
what precautions should be taken while using cng fuel in vehicles ? plss fasst i have just 9 hrs
Respiration is considered to be an example of combustion. Why?
why are some materials burn with flame while others without flame?
hope ans by meritnation expert
What is history of matchstick?
which zone of a flame does a goldsmith use for melting gold and silver and why
What is tilling? What purpose does it serve?
What is slow combustion?
why does the paper cup containing water not catch fire on heating ?
Does camphor produce a flame on burning? If yes, what will be its colour?
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