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प्रश्न
Write the names of elements from the following symbol:
Br
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उत्तर
Br- Bromine
संबंधित प्रश्न
Correct the following statement:
CO and Co both represents cobalt.
Fill in the blank
A liquid non-metal is _______.
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 with the correct words.
_______ are chemicals which are hydroxide (or oxides) of ______ eg. sodium hydroxide.
Select the correct answer from the choice given below to complete the sentence :
Dust in air is an example of _________ mixture.
Atoms: Fundamental particle of an element::______ : Fundamental particles of a compound.
Differentiate between elements and compounds.
______ is the life-giving element is the air.
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 which is required for combustion.
Classify the substances given in Fig. 2.2 into elements and compounds
