हिंदी

Correct the Following Statement: Co and Co Both Represents Cobalt.

Advertisements
Advertisements

प्रश्न

Correct the following statement:

CO and Co  both represents cobalt.

एक पंक्ति में उत्तर
Advertisements

उत्तर

CO is a Carbon monoxide and Co is an element named Cobalt.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 1: The Language of Chemistry - Exercise 1 (C) [पृष्ठ १९]

APPEARS IN

सेलिना Concise Chemistry [English] Class 9 ICSE
अध्याय 1 The Language of Chemistry
Exercise 1 (C) | Q 11.4 | पृष्ठ १९

संबंधित प्रश्न

 Write true or false 

A heterogeneous mixture has a uniform composition throughout the mixture


Define the term: Element


Define: Compounds


Give Two Examples for Each of the Following: Inert Gases


How is sodium chloride different from its constituent elements, sodium and chlorine in its properties? Justify.


Name: Two substances used to make jewellery.


Find the atomicity of the Following molecule:
Carbon Monoxide


Match the Columns:

  Column A   Column B
(a) Metals (i) Non-Reactive
(b) Molecules (ii) Brittle
(c) Non-Metals (iii) Lustrous
(d) Noble Gases (iv) Smallest unit of Compound

 


State what are radicals. Give the names of the radicals –

(a) NO3
(b) OH
(c) SO4
(d) CO3


Give the name of the radical - OH


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:

Cd


Write the names of elements from the following symbol:

Pt


Represent with the help of a simple chart how matter is classified into pure or impure substances & further into elements, compounds & mixtures, with elements further segmented.


‘The modern periodic table consists of elements arranged according to their increasing atomic numbers’. With reference to elements with atomic numbers 1 to 20 only in the periodic table – differentiate them into – metallic elements, metalloids, non-metals & noble gases.


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.


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?


Give an example of each mixture having the following characteristics. Suggest a suitable method to separate the components of this mixture

Two or more coloured constituents are soluble in some solvent.


Classify the substances given in Fig. 2.2 into elements and compounds


Elements contain the ______of the same kind.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×