Advertisements
Advertisements
प्रश्न
Give an example of a reaction where the following are involved:
Solution
उत्तर
\[\ce{NaCl (aq) + AgNO3 (aq) -> \underset{white ppt.}{AgCl \downarrow} + NaNO3 (aq)}\]
APPEARS IN
संबंधित प्रश्न
How do the following help in bringing about a chemical change?
pressure.
Complete and balance the following chemical equations:
Zn + `"H"_2"SO"_4` `→`
(dil)
FILL IN THE BLANK
In a double decomposition precipitation reaction both the reactants must be ............ soluble.
FILL IN THE BLANK
Positively charged ions are called ........
FILL IN THE BLANK
Distillation is a method of obtaining pure ............. from a solution.
TRUE \ FALSE
Temperature at which a liquid starts boiling is known as the boiling point of that liquid. True or false ?
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)
The spoiling of food is a chemical change which is recognized from the generation of certain ______ due to it.
Give an example of a reaction where the following are involved
Pressure
Write the chemical reaction where the following changes are observed.
Physical state is changed
What do you understand by precipitation reaction? Explain with examples.
Name Affects the acidified K2Cr2O7 paper and also turns lime water dirty milky.
State the original colour of the following substance and colour of residue obtained after heating.
Zinc carbonate
Give a chemical test to distinguish between the following gases.
CO2 and SO2
Write your observation and a balanced equation in the case of the following substances being heated.
Ammonium chloride
Distinguish by dilute sulphuric acid.
Sodium sulphide and sodium sulphite?
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
A white solid which evolves two colourless gases which on cooling combine and condense on the cooler parts of the test tube.
______ are substances that speed up the process of a chemical change and it will not undergo any change during the course of the reaction.
Iron and rust are the same substances.
______ is the chemical name of limestone.