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प्रश्न
Indicate whether the following statement is true or false:
Noble gases are high reactive
विकल्प
True
False
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उत्तर
False
Correct Statement: Noble gases are non-reactive
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संबंधित प्रश्न
Give one example for the following types of mixtures :
solid-liquid heterogenous mixture.
Name: the Hardest Naturally Occurring Substance
Define: Molecule
Define: Formula
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:
Ir
Give a reason for the following statement:
Components in a mixture are present in varying proportions and not in a fixed proportion.
Give a reason for the following statement :
Brass & bronze are examples of mixtures, while copper sulphate & lead nitrate are examples of compounds.
The first letter of an element is always written in ______ letter.
State true of false. If false, give the correct statement.
Two different elements may have similar atoms.
