हिंदी
सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Select the Correct Answer to the Statement Given Below: a Non-metal Which Exists in the Liquid State.

Advertisements
Advertisements

प्रश्न

Select the correct answer to the statement given below:

A non-metal which exists in the liquid state.

विकल्प

  • Chalk

  • Oxygen

  • Silicon

  • Bromine

  • Nitrous oxide

MCQ
Advertisements

उत्तर

Bromine

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 3: Elements, Compounds and Mixtures - Objective Type Questions

APPEARS IN

विराफ जे दलाल New Simplified Middle School Chemistry [English] Class 7
अध्याय 3 Elements, Compounds and Mixtures
Objective Type Questions | Q 1.5

संबंधित प्रश्न

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


State the number of atoms of CaCO3


Give reason: A frying pan is made up of steel but its handle is made up of wood.


Find the atomicity of the Following molecule:
Dinitrogen Oxide


Classify substances into pure and impure substances in the form of a chart or tabulation.


Give the name of the radical - NO3


Complete the statement with the correct words.
Acid’s are chemicals which are _____ in taste and derived from plants and ________.


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 ________.


Match the statements in List I – 1 to 10 correct answers in List II-A to J.

  List I   LIst II
1 Fluorine and chlorine A Nitrogen
2 A diatomic molecule B Boron
3 A molecule containing the elements hydrogen and oxygen. C Reactants
4 A metalloid - showing properties of both metals and non-metals. D Chemical Formula
5 The term used for the substances which take part in the chemical reaction E Halogens
6 The term represents a  substance by means of symbols. F Water
7 The term used for the substances formed as a result of a chemical reaction G Nitric Acid
8 A compound containing one atom of zinc and two atoms of chlorine. H Products
9 The chemical name for nitrogen monoxide. I Phosphorus
10 A polyatomic molecule. J Zinc Chloride

 


Write the names of elements from the following symbol:

Zn


Give a reason for the following statement:

Components in a mixture are present in varying proportions and not in a fixed proportion.


The diagram represents fractional distillation for the separation of mixtures. Answer the following :

  1. Can two immiscible liquids be separated by this process?
  2. Separation of liquids by this process is based on which physical property?
  3. If methyl alcohol & water are to be separated, which liquid would remain in flask ‘X’ after condensation.
  4. Give a reason for the above answer.
  5. 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.


Elements are the______ form of pure substances.


Non-metal conducting electricity :______ :: Metal conducting electricity : Copper


Classify the following as metals, non-metals and metalloids.

Sodium, Bismuth, Silver, Nitrogen, Silicon, Carbon, Chlorine, Iron, Copper


Why are utensils made up of aluminium and brass?


Oxygen is very essential for us to live. It forms 21% of air by volume. Is it an element or compound?


An element is sonorous and highly ductile. Under which category would you classify this element? What other characteristics do you expect the element to possess?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×