COMBUSTION

THE MATERIAL,WHICH ON HEATING IN THE PRESENCE OF AIR OR OXYGEN, CATCH FIRE EASILY AND PRODUCE HEAT AND LIGHT ENERGY, ARE CALLED

• COMBUSTION

• COMBUSTIBLE MATERIALS

• COMBUSTIBLE

• NON COMBUSTIBLE MATERIALS

A FUEL MAY BE

• GAS AND SOLID

• SOLID, LIQUID AND GAS

• LIQUID ONLY

• GAS ONLY

IN PURE OXYGEN, A SUBSTANCE BURNS FIVE TIMES FASTER THAN IN AIR

• TRUE

• FALSE

WHEN A COMBUSTIBLE SUBSTANCE CATCHES FIRE ON ITS OWN, EVEN AT ROOM TEMPERATURE, ITS COMBUSTION IS REFERRED TO AS

• SLOW COMBUSTION

• RAPID COMBUSTION

• SPONTANEOUS COMBUSTION

• EXPLOSIVE COMBUSTION

WHEN YOU BURN A PAPER A ________IS PRODUCED

• FLAME

• WATER

• WAX

• PAPER

IT IS A ZONE OF COMPLETE COMBUSTION OF WAX VAPOURS AND CARBON PARTICLES

• INNERMOST ZONE

• MIDDLE ZONE

• OUTER ZONE

• NONE OF THEM

COMPLETE AND UNCONTROLLED COMBUSTION OF A SUBSTANCE WITHIN A SHORT SPAN OF TIME

• SLOW COMBUSTION

• RAPID COMBUSTION

• SPONTANEOUS COMBUSTION

• EXPLOSIVE COMBUSTION

A GOOD FUELS SHOULD BE

• NOT PRODUCE HARMFUL GASES AFTER BURNING

• PRODUCE HARMFUL GASES

• HAVE A HIGH CALORIFIC VALUE

• NONE OF THEM

SUBSTANCE WHICH HAVE A LOW IGNITION TEMPERATURE AND HENCE, CATCH FIRE EASILY WITH A FLAME ARE CALLED

• FLAMMABLE SUBSTANCE

• INFLAMMABLE SUBSTANCE

• UNFLAMMABLE SUBSTANCE

• NONE OF THEM

OXYGEN, PRESENT IN AIR, HELPS IN THE COMBUSTION OF A FUEL IS CALLED

• SUPPORTER OF COMBUSTION

• NECESSARY OF COMBUSTION

• KINDLING TEMPERATURE

• SLOW COMBUSTION