MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
Earn 100

Statement I: Inflammable substances are petrol, alcohol, LPG etc.

Statement II: These substances have low ignition temperature.

50% studentsanswered this correctly

Important Questions on Chemistry

MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 226
Water is a fire extinguisher as:
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 227
The open 'sigrees' or coal stoves often require fanning to sustain burning because of:
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 228

Statement I: Ignition of a fire cracker is an example of explosion.

Statement II: Explosion reaction is a combustion takes place suddenly with the evolution of heat, light and sound.

MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 229

Statement I: Kerosene oil and molten wax vaporised during burning and form flames.

Statement II: The substances which vaporise during burning give flames.

MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 230
During an experiment, a clean glass plate was introduced in the candle flame for 10-12s. They were observed that a circular ring was formed on the glass plate. This is due to:
EASY
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 231
Air pollution is caused by smoke. Which of the following types of coal produces no smoke on burning?
MEDIUM
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 232
Which of the following processes, the crude petroleum substances undergo to obtain various hydrocarbons?
EASY
UPSC CAPF AC Paper - I
IMPORTANT
Encyclopedia of General Science for General Competitions>Chapter 2 - Chemistry>Assessment>Q 233
Usually fuels on burning causes pollution. Which one of the following fuel causes minimum environmental pollution?