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Chemistry
What happens to the reaction rate when temperature generally increases?
A
It decreases
B
It increases
C
It becomes zero
D
It never changes
Correct Answer
B
Chemistry
Which branch of chemistry studies the composition of substances?
A
Analytical chemistry
B
Organic chemistry
C
Nuclear chemistry
D
Biochemistry
Correct Answer
A
Chemistry
Which branch of chemistry deals with carbon compounds?
A
Inorganic chemistry
B
Organic chemistry
C
Physical chemistry
D
Analytical chemistry
Correct Answer
B
Chemistry
What is the main element present in diamond?
A
Silicon
B
Carbon
C
Calcium
D
Calcium
Correct Answer
B
Chemistry
Which of the following is a liquid metal at room temperature?
A
Iron
B
Copper
C
Mercury
D
Aluminum
Correct Answer
C
Chemistry
Which element has the symbol Hg?
A
Hydrogen
B
Mercury
C
Magnesium
D
Manganese
Correct Answer
B
Chemistry
What is the chemical symbol for Silver?
A
Si
B
Ag
C
S
D
Sv
Correct Answer
B
Chemistry
Which gas is released during photosynthesis?
A
Nitrogen
B
Oxygen
C
Hydrogen
D
Methane
Correct Answer
B
Chemistry
Which of the following is a strong acid?
A
Hydrochloric acid
B
Acetic acid
C
Carbonic acid
D
Citric acid
Correct Answer
A
Chemistry
Which acid is present in lemons?
A
Acetic acid
B
Citric acid
C
Sulfuric acid
D
Carbonic acid
Correct Answer
B