Advertisements
Advertisements
प्रश्न
Statements given below are incorrect. Write the correct statements :
Zinc is used for making power transmission wires.
Advertisements
उत्तर
Copper is used for making power transmission wires.
APPEARS IN
संबंधित प्रश्न
Fill in the blanks:
Metals react with acids to produce _________ gas.
Give reasons for the following.
Sodium and potassium are stored in kerosene.
A metal having low melting point is ______ but a non-metal having very high melting point is ______.
State one use of the following metal:
Silver
State one use of the following metal:
Gold
Brass is an alloy of copper and ______.
Mention two uses of the following metals and non-metals
Aluminium
Give reasons
Aluminium is used in making aircrafts.
Write ‘true’ or ‘false’ for the following statement :
Silver is used to make electric cables.
A metal which is neither ductile nor malleable is
State two important uses of following metal:
Uses of zinc
State the position of the following in the periodic table:
Alkali metals
Write scientific reason.
Generally the ionic compounds have high melting points.
Which is the non-ionic compound in the compounds given below.
AgNO3 + Nacl → AgCl + NaNO3
What is it made from? Why?
A pair of tongs.
What is it made from? Why?
Pots and pans
Give a reason why iron objects rust easily but the iron pillar at Qutab Minar has not rusted over the years.
Soft metal : Na : : hard metal : _______
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?
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.
