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प्रश्न
Explain the term Minerals.
उत्तर
The compounds of metals that occur in nature along with the impurities are called minerals.
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संबंधित प्रश्न
You are given a hammer, a battery, a bulb, wires and a switch.
- How could you use them to distinguish between samples of metals and non-metals?
- Assess the usefulness of these tests in distinguishing between metals and non-metals.
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
State one use of Hydrogen.
Name the metal which is used in making thermometers.
Fill in the blank
Tungsten metal is a poor conductor of _______
Tick (√) the most appropriate answer.
A metal which is a poor conductor of electricity is:
Name a metal which is poor conductor of electricity :
State the composition and two uses of given alloy:
Brass
State the composition of given alloy:
Bronze
`N+—→ N^3-`
Give the balanced reactions for the following:
Sodium is dropped in water
Give the balanced reactions for the following:
Red hot iron reacts with steam
Distinguish between an ore and a metallic compound.
Make pairs of substances and their properties
| Substance | Property |
| a. Potassium bromide (KBr) | 1. Combustible |
| b. Gold | 2. Soluble in water |
| c. Sulphur | 3. No chemical reaction |
| d. Neon | 4. High ductility. |
Identify the odd term.
With reference to the physical properties of metals and non-metals, state the following exception.
a non-metal which sublimes and is non-lustrous
Select the appropriate option for the following statement:
The element which is noble gas and radioactive in nature.
Identify who I am!
Amphoteric oxide forming metal- _______
The metal is stored in kerosene ______.
