Advertisements
Advertisements
Question
Tick (√) the correct alternative from the choice given for the following statement.
Gold is used to make jewellery because
Options
it is dull
lustrous and attractive
highly reactive
very cheap
Solution
lustrous and attractive
APPEARS IN
RELATED QUESTIONS
Tick the most appropriate answer.
How many times is a proton heavier than an electron?
- 1500
- 1800
- 1840
- none of these
Name: an Inert Gas
Name: Three different forms of carbon
Find the atomicity of the Following molecule:
Aluminium Suiphide
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name – a gas with a pungent, choking odour which is lighter than air
Give the name of the radical - SO4
Complete the statement with the correct words.
_______ are chemicals which are hydroxide (or oxides) of ______ eg. sodium hydroxide.
Select the correct answer to the statement given below:
The chemical name for dinitrogen oxide [N20].
Give a reason for the following statement:
Components in a mixture are present in varying proportions and not in a fixed proportion.
With reference to elements – define the term ‘molecule’. Give two examples each of a monoatomic, diatomic & polyatomic molecule.
