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प्रश्न
Name the gases which turn moist red litmus blue.
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उत्तर
Basic gases (NH3)
संबंधित प्रश्न
Complete and balance the following chemical equations:
N2 + O2 →
Fill in the blank.
Melting of ice is a _______ change.
Fill in the blank:
The basic conditions necessary for a chemical reaction is _______
Name the type of chemical reaction shown by the following equation:
2Mg + O2 → 2MgO
Choose the correct option from the bracket and explain the statement giving a reason.
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition)
Addition of an aqueous solution of ZnSO4 to an aqueous solution of BaCl2 is an example of ______ reaction.
Write the chemical reaction where the following changes are observed.
Physical state is changed
What do you observe? When
Barium chloride is added to sodium sulphate solution
State the original colour of the following substance and colour of residue obtained after heating.
Copper carbonate
State the original colour of the following substance and colour of residue obtained after heating.
Lead nitrate
______ is a chemical substance is used in whitewashing.
