Advertisements
Advertisements
प्रश्न
Select the correct answer from the choice in the bracket.
The least reactive metal.
पर्याय
magnesium
silver
copper
Advertisements
उत्तर
silver
APPEARS IN
संबंधित प्रश्न
Fill in the blank
A pure substance has definite.................. and constant ..............
Write true or false
All pure substances have characteristic melting and boiling points.
Define Elements.
Define:
Atomicity
Define: Formula
Name: Three different forms of carbon
Answer the following question:
Why are copper and aluminium used to make electric wires?
Find the atomicity of the Following molecule:
Aluminium Suiphide
Fill in the blank
A metal which is a liquid at room temperature is _______.
Fill in the blank
A liquid non-metal is _______.
Indicate whether the following statement is true or false:
Molecules combine to form atoms
Tick (√) the correct alternative from the choice given for the following statement
A gaseous non-metal.
Give the name of the radical - CO3
Complete the statement given below by filling in the blanks with the correct words.
Atom contains ________ , with positively charged _____.
State four differences between – elements, compounds and mixtures with suitable examples.
Select the correct answer to the statement given below:
The chemical name for dinitrogen oxide [N20].
Select the correct answer to the statement given below:
A compound containing carbon, oxygen and calcium.
Non-metal conducting electricity :______ :: Metal conducting electricity : Copper
Atoms: Fundamental particle of an element::______ : Fundamental particles of a compound.
Match the following.
| 1. | Element | Made up of molecules |
| 2. | Compound | Impure substance |
| 3. | Colloid | Settles down on standing |
| 4. | Suspension | Pure substance |
| 5. | Mixture | Made up of atoms |
