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प्रश्न
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Iron pipes coated with zinc do not get rusted easily.
पर्याय
True
False
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उत्तर
This statement is True.
Explanation:
The zinc coating on iron pipes prevents rust by acting as a protective barrier.
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संबंधित प्रश्न
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Condensation of steam is not a chemical change.
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Reduction is a chemical reaction in which there is
- removal of hydrogen
- removal of oxygen
- addition of oxygen
- none of these
True or false
New substances are formed in a chemical change.
Write true or false .
A black residue is formed when sugar is heated .
Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.
(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)
Chlorine (Cl2) molecule is formed by ______ of electrons between two chlorine atoms.
Complete and balance the following reaction:
\[\ce{Pb(NO3)2 ->[\Delta]}\]
Give a chemical test to distinguish between the following gases.
H2 and CO2
______ gas causes tears in our eyes while cutting onions.
When magnesium is burnt in the air, a new substance is formed which is ______.
Write five changes in the characteristics of a substance that can take place during a chemical change.
