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प्रश्न
Select the correct answer to the statement given below:
A compound containing carbon, oxygen and calcium.
विकल्प
Chalk
Oxygen
Silicon
Bromine
Nitrous oxide
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उत्तर
Chalk
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संबंधित प्रश्न
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Sand
Name: a non-metal which is lustrous
Name: a Liquid Metal
Name: Two substances used to make electric wires
Name A substance used as an insulator.
Find the atomicity of the Following molecule:
Dinitrogen Oxide
Find the atomicity of the Following molecule:
Carbon Monoxide
Select the correct answer from the choice given below.
The unreactive non-metallic element
Select the correct answer from the choice given below.
The element which is malleable
Write the names of elements from the following symbol:
Zn
Write the names of elements from the following symbol:
Pt
Select the correct answer from the choice in the bracket.
The positively charged particle of an atom.
Give three differences between elements & compounds with relevant examples.
Give an example of two liquids which form homogenous.
Select the correct answer from A, B, C, D & E for the statement given below :
A metalloid.
The diagram represents fractional distillation for the separation of mixtures. Answer the following :
- Can two immiscible liquids be separated by this process?
- Separation of liquids by this process is based on which physical property?
- If methyl alcohol & water are to be separated, which liquid would remain in flask ‘X’ after condensation.
- Give a reason for the above answer.
- State the purpose of the fractionating column in the apparatus.
Give a reason for the following statement :
The filter paper made into a cone & placed in a funnel for filtering out the solid particles in a solid-liquid mixture should be moistened before placing it.
______ is a mixture of gases.
Classify the substances given in Fig. 2.2 into elements and compounds
Reason out
Elements are called semimetals.
