Science(Chemistry)
Magical World of Chemistry
Test your knowledge of chemistry with our engaging quiz designed for both students and science enthusiasts! Dive into topics ranging from chemical reactions to the laws of nature.
Challenge yourself and discover:
- How well you understand chemical changes
- Key concepts in physical chemistry
- Your grasp on fundamental scientific laws
When Magnesium reacts with air , it give rise to a new product.The colour of the product is ?
Red
White
Black
Blue
Burning of Candle is a
Chemical Change
Physical change
No Change
Both Option A and Option B
Which of the following is a irreversible change ? Use Comment box for any query.
Melting of Wax
Mixing of Fruits in a salad
Respiration
Freezing of Water
Nature of Product formed when Magnesium reacts with Air ??
Acidic
Basic
Neutral
None of the above
Who Given the "Law of Conservation Of Mass" ?
Robert boyle
Neils Bohr
Antoine Lavoisier
Albert Einstein
Which of the following reaction is used for Blacken/White photography ??
Combination Reaction
Thermal Decomposition
Electrolytic decomposition
Photolytic Decomposition
Endothermic reaction is similar to
Combination Reaction
Decomposition Reaction
Single Displacement Reaction
Double Displacement Reaction
What type of chemical reactions take place when electricity is passed through water?
Displacement
Combination
Decomposition
Double displacement
Pb + CuCl2 → PbCl2 + Cu The above reaction is an example of:
Combination
Double Displacement
Decomposition
Displacement
Give the ratio in which Hydrogen and Oxygen are present in water.
1:2
2:6
2:1
1:8
The respiration process during which glucose undergoes slow combustion by combining with oxygen in the cells of our body to produce energy, is a kind of:
Exothermic process
Endothermic Process
Reversible Process
Physical Process
It is necessary to balance a chemical equation in order to satisfy the law of:
Conservation of Momentum
Conservation of Mass
Conservation of Energy
Conservation of motion
The chemical formula of lead sulphate is
Pb2SO4
PbSO4
Pb(SO4)2
Pb2(SO4)3
What happens when copper rod is dipped in iron sulphate solution :-
Copper displaces iron
Blue color of copper sulphate solution is obtained
No reaction takes place
Reaction is exothermic
When carbon dioxide is passed through lime water,
Calcium hydroxide is formed
White precipitate of CaO is formed
Color of lime water disappears
Lime water turns milky
The reaction in which two compounds exchange their ions to form two new compounds is
A displacement reaction
A decomposition reaction
An isomerization reaction
A double displacement reaction
Chemically rust is
Hydrated Ferrous oxide
Only ferric oxide
Hydrated ferric oxide
None of these
Fatty foods become rancid due to the process of
Oxidation
Reduction
Corrosion
Hydrogenation
Dilute Hydrochloric acid is added to granulated Zinc in a test tube. The following observations are recorded.Point out the appropriate observation.
He surface of metals become shining
The reaction mixture turns milky
Odour of a pungent smelling gas is recorded
A colourless and odourless gas is evolved
Silver article turns black when kept in the open for a few days due to the formation of
AgS
H2S
AgSO4
Ag2S
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