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प्रश्न
Give an example of a reaction where the following are involved:
Solution
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उत्तर
\[\ce{NaCl (aq) + AgNO3 (aq) -> \underset{white ppt.}{AgCl \downarrow} + NaNO3 (aq)}\]
APPEARS IN
संबंधित प्रश्न
Complete and balance the following chemical equation:
\[\ce{Pb(NO3)2 ->[Heat]}\]
Write the missing reactants and products and balance the equations.
................+ HCI `→` NaCI + `"H"_2"O"` + .........................
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
Fill in the blank
A new substance is formed in a _______ change.
A solution of a substance ‘X’ is used for white washing write the reaction of the substance ‘X’ named in (a) above with water.
Explain by writing a word equation.
Bubbles are seen on adding lemon juice to baking soda.
Give an example of a reaction where the following are involved:
Close contact
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 coloured substance which leaves on strong heating a black residue and evolves two colourless gases one of which is acidic and the other neutral.
______ is not a chemical change.
Which of the following is/are true when milk changes into curd?
- Its state is changed from liquid to semi solid.
- It changes colour.
- It changes taste.
- The change cannot be reversed.
Choose the correct option from below:
