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प्रश्न
Complete the statement with the correct words.
_______ are chemicals which are hydroxide (or oxides) of ______ eg. sodium hydroxide.
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उत्तर
Bases – are chemicals which are hydroxide (or oxides) of metals eg. sodium hydroxide.
संबंधित प्रश्न
Give one example for the following type of mixtures
solid-solid homogenous mixture.
State four differences between compounds and mixtures.
Name: a Metal Which is brittle
Tick (√) the correct alternative from the choice given for the following statement.
Gold is used to make jewellery because
Elements are classified into – Metals – Non-metals – Metalloids – Noble gases. State which of A, B, C, D is a –
1. Metallic element
2. Non-metallic element
3. Metalloid
4. Noble gas.
A: Is non-malleable, non-ductile & a poor conductor of electricity ___________
B: Has lustre, is malleable and ductile & a good conductor of heat ___________
C: Is unreactive and inert and present in traces in the air _________
D: Shows properties of both metals and non-metals ___________
Select the correct answer from the choice given below.
An impure substance
Select the correct answer to the statement given below:
A non-metal which exists in the liquid state.
Select the correct answer from the choice in the bracket.
The least reactive metal.
State why brass is considered as a homogenous mixture while a mixture of iron & sulphur – heterogenous.
Complete the table:
| Element | Latin Name | Symbol |
| Mercury | ______ | Hg |
| Lead | Plumbum | ______ |
| Iron | ______ | Fe |
| Potassium | Kalium | ______ |
