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प्रश्न
Write down the word or phrase from the given options that will correctly fill in the blanks in the following sentence:
Pure water consists entirely of ________
विकल्प
ions
molecules
उत्तर
molecules
APPEARS IN
संबंधित प्रश्न
When fused lead bromide is electrolysed, we observe ______.
Molten lead bromide conducts electricity. It is called an ______. It is composed of lead ______ and bromide ______. The lead ions are ______ charged and are called ______. The bromide ______ are ______ charged and are called ______.
Explain, why solid sodium chloride does not allow electricity to pass through?
Here is an electrode reaction:
\[\ce{Cu -> Cu^{2+} + 2e^-}\]
At which electrode (anode or cathode) would such a reaction take place? Is this an example of oxidation?
A metal article is to be electroplated with silver. The electrolyte selected is sodium argentocyanide.
- What kind of salt is sodium argentocyanide?
- Why is it preferred to silver nitrate as an electrolyte?
- State one condition to ensure that the deposit is smooth, firm and long lasting.
- Write the reaction taking place at the cathode.
- Write the reaction taking place at the anode.
Fill in the blank from the choices given below :
In covalent compounds, the bond is formed due to the ______ of electrons.
Fill in the blank from the choices given below :
Electro covalent compounds have a _____ boiling point
Give appropriate scientific reasons for the following statement :
Electrolysis of molten lead bromide is considered to be a redox reaction.
A strip of copper is placed in four different colourless salt solutions. They are KNO3, AgNO3, Zn(NO3)2 and Ca(NO3)2. Which one of the solutions will finally turn blue?
Classify the following substance:
Dilute sulphuric acid
