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प्रश्न
The atomic theory of matter was proposed by :
विकल्प
John Kennedy
Lavoisier
Proust
John Dalton
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उत्तर
John Dalton
The atomic theory of matter was proposed by John Dalton.
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संबंधित प्रश्न
Name any two laws of chemical combination.
Give one major drawback of Dalton's atomic theory of matter.
State the law of constant proportions. Give one example to illustrate this law.
Which postulate of Dalton’s atomic theory can explain the law of constant proportions ?
The law of constant proportions was given by :
In water, the proportion of oxygen and hydrogen by mass is :
What do we call those particles which have more electrons than the normal atoms ?
What do we call those particles which have less electrons than the normal atoms ?
Work out the formulae for the following compounds:
Calcium carbonate
Two samples ‘m’ and ‘n’ of slaked lime were obtained from two different reactions. The details about their composition are as follows:
- ‘sample m’ mass: 7g
- Mass of constituent oxygen: 2g
- Mass of constituent calcium: 5g
- ‘sample n’ mass: 1.4g
- Mass of constituent oxygen: 0.4g
- Mass of constituent calcium: 1.0g
Which law of chemical combination does this prove? Explain.
