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प्रश्न
Indicate whether the following statement is true or false:
Metals reflect light and are good conductors of electricity
पर्याय
True
False
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उत्तर
True
APPEARS IN
संबंधित प्रश्न
Define: Atom
What is meant by H20 and 3H2O
Tick (√) the correct alternative from the choice given for the following statement
The most ductile metal.
Draw a labelled diagram of an atom including its nucleus, orbits & their contents.
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 ___________
Complete the statement given below by filling in the blank with the correct word.
From the elements nitrogen, chlorine, bromine, the element present in the atmosphere is ________.
Write the names of elements from the following symbol:
Fe
With reference to elements – define the term ‘molecule’. Give two examples each of a monoatomic, diatomic & polyatomic molecule.
Give two example of elements.
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal other than carbon that shows allotropy.
