English Medium इयत्ता ९ - CBSE Question Bank Solutions for Science

What is meant by saying that metals are sonorous ?

What is meant by saying that metals are lustrous ?

What is meant by saying that metals are lustrous ?

What is the general name of the materials which contain at least two pure substances and show the properties
of their constituents ?

What is the general name of the materials which contain at least two pure substances and show the properties
of their constituents ?

Name one element, one compound and one mixture.

Name one element, one compound and one mixture.

What name is given to those elements which are neither good conductors of electricity like copper nor insulators like sulphur ?

What name is given to those elements which are neither good conductors of electricity like copper nor insulators like sulphur ?

Fill in the following blanks with suitable words :

An element is made up of only one kind of ........

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An element is made up of only one kind of ........

Fill in the following blanks with suitable words :

Brass is an alloy which is considered a ..............

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Brass is an alloy which is considered a ..............

The three important metalloids are.............................. and ..........................

The three important metalloids are.............................. and ..........................

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The elements which are sonorous are called ..........................

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The elements which are sonorous are called ..........................

Classify the following into elements and compounds :

1. H₂O
2. He
3. Cl₂
4. CO
5. Co

Classify the following into elements and compounds :

1. H₂O
2. He
3. Cl₂
4. CO
5. Co

Classify the following as elements or compounds :
Iron, Iron sulphide, Sulphur, Chalk, Washing soda, Sodium, Carbon, Urea