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प्रश्न
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 ___________
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उत्तर
A : Is non-malleable, non-ductile & a poor conductor of electricity Non-metallic element
B : Has lustre, is malleable and ductile & a good conductor of heat Metallic element
C : Is unreactive and inert and present in traces in air Noble gas.
D : Shows properties of both metals and non-metals Metalloid
संबंधित प्रश्न
Tick the most appropriate answer.
How many times is a proton heavier than an electron?
- 1500
- 1800
- 1840
- none of these
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Tick (√) the correct alternative from the choice given for the following statement.
Sulphur and carbon are
Tick (√) the correct alternative from the choice given for the following statement.
Brass and bronze are
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elements, compounds & mixtures.
Complete the statement with the correct words.
__________ are chemicals formed on reaction of a base with an _____ giving salt and water.
Select the correct answer from the choice given below.
The element which is malleable
Select the correct answer from the choice given below.
An impure substance
Select the correct answer to the statement given below:
The chemical name for dinitrogen oxide [N20].
State five different characteristics of compounds.
