Gases

Total Questions: 7

1 - Laughing gas is called----?
A ) Nitrous oxide ✅
B ) Oxygen
C ) Hydrogen
D ) Carbon dioxide

2 - Cooking gas is a mixture of which of the following to gases?

A ) Oxygen and nitrogen
B ) Butane and propane ✅
C ) Methane and carbon dioxide
D ) Season and methane

3 - The percentage of oxygen in the atmospheric air is approximate----:
A ) 21%
B ) 30% ✅
C ) 40%
D ) None of these

4 - Which of the following gases if used in illuminating?

A ) Neon ✅
B ) Nitrogen
C ) Ammonia
D ) Methane

5 - Which gas can be accumulated in poorly ventilated buildings?

A ) Methane
B ) Radon ✅
C ) Neon
D ) None of these

6 - Iron and steel structures are damaged by-----:
A ) Carbon dioxide
B ) Sulphur dioxide ✅
C ) Carbon monoxide
D ) Methane

7 - Which gas is commonly used in refrigeration?

A ) Carbon dioxide
B ) Freon ✅
C ) Oxygen
D ) Nitrogen
Past Papers
PPSC 2025 Past Papers
PPSC Past Papers
NTS Past Papers
FPSC Past Papers
Lecture PPSC Past Papers
Punjab Police PPSC Past Papers
PMS Past Papers
IB Past Papers
Junior Clerk PPSC Past Papers
PPSC 2024 Past Papers
PPSC 2023 Past Papers
Pakistan Study Past Paper 2024
Geography Past Paper 2024
Ziladar Past Papers
Assistant Past Papers
OTS Past Papers
MCQs
Current Affairs MCQs
General Knowledge MCQs
English MCQs
Computer MCQs
Biology MCQs
Physics MCQs
Chemistry MCQs
Pak Study MCQs
Geography Topic Wise MCQ
Pakistan Study Topic Wise MCQ
General Knowledge Topic Wise MCQ
Everyday Science Topic Wise MCQ
Computer Science Topic Wise MCQ
English Topic Wise MCQ
Electrical Engineering MCQs
History of Pakistan MCQs
Sports MCQs
Economics MCQs
Abbreviation MCQs
World Record MCQs
Everyday Science MCQs
Urdu MCQs
Pedagogy MCQs
Educators
General Knowledge MCQs for Educators
Pakistan Affairs MCQs for Educators
Geography MCQs for Educators
Islamic Studies MCQs for Educators
Everyday Science MCQs for Educators
Computer MCQs for Educators
English MCQs for Educators
Current Affair MCQs for Educators
Mathematics MCQs for Educators
Urdu MCQs for Educators
Pedagogy MCQs for Educators
Head Teacher Preparation SED