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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Select the Correct Answer to the Statement Given Below: a Compound Containing Carbon, Oxygen and Calcium.

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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

MCQ
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उत्तर

Chalk

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अध्याय 3: Elements, Compounds and Mixtures - Objective Type Questions

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विराफ जे दलाल Simplified Middle School Chemistry [English] Class 7 ICSE
अध्याय 3 Elements, Compounds and Mixtures
Objective Type Questions | Q 1.3

संबंधित प्रश्न

What is the difference between a pure substance and a mixture ?


Give one example for the following types of mixtures :

misicible liquids


Give two applications of chromatography.


Give two examples of the following.
Elements which are liquids


What is meant by H20 and 3H2O


Find the atomicity of the Following molecule:
Acetic Acid


Tick (√) the correct alternative from the choice given for the following statement.
All pure substances have


Tick (√) the correct alternative from the choice given for the following statement.
Sand is a compound of


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.
An element is a pure substance which cannot be broken down by physical or _________ methods.


Complete the statement given below by filling in the blanks with the correct words.
From the elements – He, Br, Pt, and O; the element which is metallic is ____, an inert element is ____, forms a triatomic molecule is ____, is liquid at room temperature is_ ___.


Select the correct answer from the choice given below.
The type of molecule- bromine


Select the correct answer from the choice in the bracket.

The positively charged particle of an atom.


Select the correct answer from A, B, C, D & E for the statement given below :

A metalloid.


Give a reason for the following statement :

Brass & bronze are examples of mixtures, while copper sulphate & lead nitrate are examples of compounds.


Elements are the______ form of pure substances.


Classify the following as elements and compounds.

Water, Common salt, Sugar, Carbon dioxide, Iodine and Lithium


Name the two elements which are derived from the country.


Elements contain the ______of the same kind.


Name the element which is used in toothpaste to strengthen our teeth.


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