Advertisements
Advertisements
प्रश्न
Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride
Salt of silver, such as ________ is used for making photographic films.
Advertisements
उत्तर
Salt of silver, such as silver chloride is used for making photographic films.
APPEARS IN
संबंधित प्रश्न
Name one ore of manganese. Which compound of manganese is present in this ore? Also write its chemical formula.
Mention two uses of the following metals and non-metals
Oxygen
Write ‘true’ or ‘false’ for the following statement.
Iodine acts as an antiseptic in the form of a tincture of iodine.
A metal with melting point less than 50°C is
State two important uses of following metals:
Uses of iron
Give the general characteristics of:
Alkali metals,
(i) bonding
(ii) action of air
(iii) action of water
(iv) action of acid
Give the general characteristics of:
Alkaline earth metals with reference to
(i) bonding
(ii) action of air
(iii) action of water
(iv) action of acid
Why is hydrogen placed with alkali metals?
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Oxygen
Write scientific reason.
Anodes need to be replaced from time to time during the electrolysis of alumina.
When a copper coin is dipped in silver nitrate solution, a glitter appears on the coin after some time. Why does this happen? Write the chemical equation.
What is it made from? Why?
A pair of tongs.
Soft metal : Na : : hard metal : _______
Aluminium: _______: gold : : electric insulator
The ability of metals to be drawn into thin wire is known as
Name two major non-metals which are present in fertilisers and enhance the growth of plants.
A doctor prescribed a tablet to a patient suffering from iron deficiency. The tablet does not look like iron. Explain.
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
Metal atoms tend to have a maximum of ______ electrons in the outermost shell.
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the reducing agent.
