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प्रश्न
Write ‘true’ or ‘false’ for the following statement.
Iodine acts as an antiseptic in the form of a tincture of iodine.
विकल्प
True
False
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उत्तर
True
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संबंधित प्रश्न
Give reasons for the following.
Copper cannot displace zinc from its salt solution.
Give a reason for Alkali metals are good reducing agents.
State five uses of metals
Give reasons
Gold is mixed with copper and nickel.
Aluminium is not used to make :
Write ‘True’ or ‘False’ in front of following statement.
Magnesium is used in making light weight alloys of aluminium.
Name a metal which is not malleable :
State two important uses of following metal
Uses of tin
State the position of the following in the periodic table:
Alkali metals
Write name.
Alloy of sodium with mercury.
Write name.
The nonmetal having electrical conductivity.
Molecular formula of the chloride of an element X is XCl. This compound is a solid having high melting point. Write name of any element present in the same group as X
With reference to the following metals state their use in daily life metal:
Lead
Aluminium: _______: gold : : electric insulator
When a copper coin is dipped in the solution of silver nitrate, it shows a lustre on its surface. Explain this process with the help of a chemical equation.
What is ductility?
The electronic configurations of three elements X, Y and Z are X – 2, 8; Y – 2, 8, 7 and Z – 2, 8, 2. Which of the following is correct?
Why do metals appear shiny?
Which metals are liquid at room temperature?
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the reducing agent.
