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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.
पर्याय
True
False
उत्तर
True
APPEARS IN
संबंधित प्रश्न
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Generally, non-metals react with acids. ( )
The atomic number of an element X is 12.
(a) What must an atom of X do to attain the nearest inert gas electron configuration?
(b) Which inert gas is nearest to X?
Fill in the following blank with suitable word:
Brass is an alloy of copper and .........
Give reasons
Gold is mixed with copper and nickel.
Fill in the blank
_______ is a soft metal.
Aluminium is not used to make :
Name a metal which is best conductor of electricity :
Why are alkali metals kept in kerosene oil?
Write scientific reason.
Pine oil is used in froth flotation.
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?
Pots and pans
With reference to the following metals state their use in daily life metal:
Zinc
State a specific reason for using copper in electrical cables
Match the columns.
| Group A | Group B |
| 1) Copper and Zinc | a) Brass |
| 2) Copper and Tin | b) Bronze |
| c) Stainless steel |
Complete the following flow chart.
Compare the properties of metals and nonmetals. Give three examples for each.
Which one of the following four metals would be displaced from the solution of its salts by other three metals?
Sodium is a hard metal.
Which metal has the highest ductility?
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the metallic element.
