Reactions & processes

Total Questions: 15

1 - When table salt NaCl is added to water------?
A ) Sodium and chlorine ions are separated ✅
B ) A covalent bond is broken
C ) An acidic Solution is formed
D ) Sodium is attracted to the hydrogen atoms of water

2 - Biolin of an egg is a-----:
A ) Chemical change
B ) Physical change
C ) Both a and b ✅
D ) None of these

3 - Fission reaction is which type of reaction?

A ) Chemical ✅
B ) Physical
C ) Analytical
D ) None of these

4 - Burning of candle is which change-----:
A ) Chemical ✅
B ) Physical
C ) Thermal
D ) None of these

5 - Which of the following is not a chemical reaction?

A ) Digestion of food
B ) Burning of coal
C ) Conversion of water into stream ✅
D ) Burning of paper

6 - Which of the following is responsible for turning Taj mahal yellow?

A ) Ammonia
B ) Sulphur dioxide ✅
C ) Carbon dioxide
D ) Chlorine

7 - The blotting paper helps absorb liquids by----:
A ) Capillary action ✅
B ) Viscosity
C ) Surface tension
D ) None of these

8 - Soap and detergent remove dirt from clothes due to-----:
A ) Lowering of interfacial tension ✅
B ) Osmosis
C ) Diffusion
D ) Capillary action

9 - سالوے پروسس کس کی تیاری میں استعمال ہوتا ہے ؟
A ) سوڈیم کلورائڈ
B ) کیلشیم کلورائڈ
C ) سوڈیم کاربونیٹ ✅
D ) کیلشیم کاربونیٹ

10 - مایا ہائیڈرو کاربنز کیسی حالت میں تبدیل کرنے میں کون انسان ملک شامل ہے؟
A ) کریکنگ ✅
B ) ڈسٹلیشن
C ) ری فارمنگ
D ) ولیمرائزیشن

11 - Which of the following is used to speed up chemical reaction?

A ) Bio enzyme
B ) Enzyme
C ) Catalyst ✅
D ) Bio catalyst

12 - Which catalyst is used for separation of Oxygen and hydrogen in water?

A ) Electricity ✅
B ) Heat
C ) Sodium chloride
D ) Nitric acid

13 - Which is more efficient at absorbing infrared radiation then carbon dioxide?

A ) Fog
B ) Clouds
C ) Water vapours ✅
D ) Moisture

14 - What are liquids that evaporate quickly called-----:
A ) Viscous
B ) Volatile ✅
C ) Evaporative
D ) None of these

15 - The movement of particles from an area of high concentration to an area of low concentration is known as:
A ) Diffusion ✅
B ) Osmosis
C ) Active Transport
D ) All of these
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