Timed Challenge - Answer & Submit | GK Mania

1 What is an endothermic reaction?

A) reaction that absorbs heat from the

B) A reaction with no energy change

C) A reaction that releases heat

D) A combustion reaction

2 What makes bread rise?

A) Sugar melting

B) Heat expansion

C) Salt reaction

D) Yeast producing CO₂

3 What is the periodic table organized by?

A) Discovery date

B) Alphabetical order

C) Increasing atomic number

D) Decreasing atomic mass

4 What element makes up most of air?

A) Nitrogen

B) CO₂

C) Oxygen

D) Argon

5 What gas causes global warming mainly?

A) Oxygen

B) Helium

C) Nitrogen

D) Carbon

6 What is a solution in chemistry?

A) A chemical reaction

B) homogeneous mixture of

C) A type of compound

D) A pure element

7 What type of reaction involves a substance combining with oxygen?

A) Reduction

B) Neutralization

C) Hydrolysis

D) Combustion

8 What gas do we breathe to survive?

A) Oxygen

B) Nitrogen

C) Helium

D) Hydrogen

9 What is the strongest type of intermolecular force?

A) London dispersion forces

B) Dipole-dipole forces

C) Hydrogen bonding

D) Van der Waals forces

10 What element has symbol W?

A) Tin

B) Wolfram is W

C) Tantalum

D) Tungsten

Quiz

1 What is an endothermic reaction?

2 What makes bread rise?

3 What is the periodic table organized by?

4 What element makes up most of air?

5 What gas causes global warming mainly?

6 What is a solution in chemistry?

7 What type of reaction involves a substance combining with oxygen?

8 What gas do we breathe to survive?

9 What is the strongest type of intermolecular force?

10 What element has symbol W?

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Quiz

1 What is an endothermic reaction?

2 What makes bread rise?

3 What is the periodic table organized by?

4 What element makes up most of air?

5 What gas causes global warming mainly?

6 What is a solution in chemistry?

7 What type of reaction involves a substance combining with oxygen?

8 What gas do we breathe to survive?

9 What is the strongest type of intermolecular force?

10 What element has symbol W?

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Quiz Results