Advertisements
Advertisements
प्रश्न
Fill in the blank
A metal that gives dazzling effect to crackers when they explode is ______
Advertisements
उत्तर
A metal that gives dazzling effect to crackers when they explode is magnesium.
APPEARS IN
संबंधित प्रश्न
State one use of the following metal:
Aluminium
The atomic number of an element Y is 16.
- What must an atom of Y do to achieve the nearest inert gas electron arrangement?
- Which inert gas is nearest to Y?
What elements are present in steel?
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.
Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride
A solution of a metal in mercury is called ________
Name a metal which is not malleable :
State two important uses of following metal
Uses of lead
Write name.
Molecular formula of the common ore of aluminium.
Write name.
The reagent that dissolves noble metals.
Match the alloys given in column I to the uses given in column II :
| Column I | Column II |
| (i) Duralumin | A. Electrical fuse |
| (ii) Solder | B. Surgical instruments |
| (iii) Brass | C. Aircraft body |
| (iv) Stainless Steel | D. Decorative articles |
What is it made from? Why?
A pair of tongs.
What is it made from? Why?
Electric cables
What is it made from? Why?
Ornaments
With reference to the following metals state their use in daily life metal:
Lead
Soft metal : Na : : hard metal : _______
Can you store pickle in an aluminium utensil? Give reason.
Which one of the following metals do not react with cold as well as hot water?
Silver and copper are very good conductors of electricity.
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the reducing agent.
