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प्रश्न
Fill in the blank
A metal which is a poor conductor of electricity is _______.
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उत्तर
A metal which is a poor conductor of electricity is tungsten.
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संबंधित प्रश्न
Tick the most appropriate answer
Solutions are
- heterogeneous mixtures.
- compounds
- homogeneous mixtures.
- elements
Tick the most appropriate answer.
How many times is a proton heavier than an electron?
- 1500
- 1800
- 1840
- none of these
Correct the following statement:
CO and Co both represents cobalt.
Give one use of the following substance:
Coal
Indicate whether the following statement is true or false:
Molecules can exist independently.
Tick (√) the correct alternative from the choice given for the following statement.
All pure substances have
Elements are classified into – Metals – Non-metals – Metalloids – Noble gases. State which of A, B, C, D is a –
1. Metallic element
2. Non-metallic element
3. Metalloid
4. Noble gas.
A: Is non-malleable, non-ductile & a poor conductor of electricity ___________
B: Has lustre, is malleable and ductile & a good conductor of heat ___________
C: Is unreactive and inert and present in traces in the air _________
D: Shows properties of both metals and non-metals ___________
Write the names of elements from the following symbol:
Zn
Define the terms elements, compounds & mixtures with a view to show their basic difference.
Differentiate between homogenous & heterogeneous mixtures.
