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प्रश्न
Name a metal used in making electric cables
उत्तर
Copper
APPEARS IN
संबंधित प्रश्न
Choose the correct answer from the options given below :
The two main metals in Bronze are:
(A) Copper and zinc
(B) Copper and lead
(C) Copper and nickel
(D) Copper and tin
Name the metal which is the poorest conductor of heat.
State one use of Hydrogen.
State any five physical properties of metals.
Name two metals whose melting points are so low that they melt when held in the hand.
Fill in the blank
Tungsten metal is a poor conductor of _______
What do you understand by the term metal?
State two important uses of following non-metal
Uses of chlorine
What is an alloy?
Define metal and non-metal on the basis of electron loss or gain.
`Mg -— → Mg^(2+)`
Name:
Two metals which are liquid at room temperature
Name:
a non metal which is lustrous
Give the balanced reactions for the following:
Magnesium reacts with boiling water
Why do gold ornaments look new even after several years of use?
In which of the following industries, microbial enzymes are not used?
a) Glass industry.
b) Cheese industry
c) Tanning industry.
d) Paper industry.
Complete the statement given below, by filling in the blank with the correct word:
The ability of a metal to produce a reasonant sound ______.
Complete the statement given below, by filling in the blank with the correct word:
A non-metal added to swimming pools to kill germs_____.
Match the columns.
| Group A | Group B |
| 1. Making sheets of metals | a) Sonority |
| 2. Making metal utensils | b) Malleability |
| 3. Making Copper wires | c) Good conductor of heat |
| 4. Making bells from metal | d) Ductility |
Non-metals are non-malleable.
